Download CSPD - Chip Surge Protection Devices

CSPD(Chip-SPD)
SMD TYPE
Over Voltage
Protection
Device
Seems Similar,
But Exactly Different
SFI Electronics Technology Inc.
What is CSPD ?
CSPD (Chip Surge Protection Device) is a kind of surface mount surge voltage protector. SFI utilized exclusive
powder material and product technology to develop a creative new concept . We also get many patents from
many countries, including the ”A” innovation patent (Material Composition Having core-Shell microstructure
used for Varistor) and ”B” innovation patent (Surge Absorbing Material with Dual Function ). That’s why
CSPD has the better non-linear ohm with higher withstanding peak current compared to conventions
[Description]：
The non-linear impedance of ceramic comes from Schottky barrier between two piece of ZnO particles (double
Schottky barrier). It means, in sintering process of ZnO , it also realizes the semi-conductive of ZnO particle and
makes the grain boundary more tight. (Fig. (1) & (2))
CSPD peak current protection mode as below.
Fig. (1)
Fig. (2)
“” Conventional “” process VS. “” CSPD “”process
(1) 、Mixture of ZnO：
Convention：
At same sintering process,
1.The ZnO particle becomes ion mixture and increase
semi-conductive.
2.Forming the boundary of covering ZnO particles.
(2) 、Distribution of boundary：
CSPD：
The ZnO mixture and covering and the high impedance
materials of particle are divided to two individual process
(innovation) and ZnO particle mixture to make more
semi-conductive.
Convention：
If the particle of ZnO is too rough and few, it’s difficult
to cover on surface evenly. The result will make the
high resistance of Bi2O3 not evenly and affect
dispersion higher, alpha value lower, clamping
voltage higher and affect functions of varistor.
CSPD：
The product is made by nanotech process and makes the
boundary grains in nano to make a chemical
compound. It makes the boundary cover the ZnO evenly
and makes each double Schottky barrier more higher and
even the same height, the function more concentrative,
dispersion lower, higher alpha, low clamping voltage.
The functions of varistors is upgraded.
(3)、Additional PTC：
Convention：
The product has one feature: the non-linear α value will
go down rapidly and the leakage current will exceed
100μA when the temperature rises. It’s the weakness.
CSPD：
To add PTC factors between boundary ,the resistance of
PTC will become large when the temperature rises. Within
a range of temperature, the resistance increases 102 ~108
times rapidly. It upgrades the operation temperature of
CSPD.
Advantages
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Micro Package Size (SMD ) type: to achieve large space and solve height Limit
High Surge Current: Stand 10X700uS 6KV Surge
Low BDV: 12V can provide the best solution for protective systems
High reliability: Low leakage after high reliability
Low Clamping
Electric Distribution Concentricity
High Non-linear α Value: Over 25 and it will upgrade IV curve sensitivity
Quick respond Time: Solve the problem “extinguish” of GDT
High performance: Many times surge sparks over 30 times on waveform 10/700us
Good Temperature Features : With operating range -55 ℃~125 ℃
New product Content( CSPD Family) :
Type
Transient
Load Dump
Series
New
Design
ESD
Standard
Remark
Auto Power
ISO7637-2
Pulse 5
Load Dump 80J
Can replace
TVS ,MOV
SHC
Industrial
Control
IEC61000-4-5
Surge Current:
3000A(8x20 us)
Can replace
MOV , MLV
SHN
Network Security
IEC61000-4-5
K21
Surge Voltage:
6KV (10X700 uS)
Can replace
GDT, Sidactor
SHV
Power
IEC61000-4-5
Breakdown Voltage:
470V / Surge: 800A
Can replace
MOV, GDT
SEA
Auto CAN BUS
ISO10650
ISO7637-2
Pulse 1, 2, 3
ESD 30KV
Available
SEM
Mobile
Clamping Voltage
<12.5V
Under
Developing
Breakdown voltage :
100V / Cap. 0.05pF
Under
Developing
IEC61000-4-2
Dual
Function
Max. value
parameter
SHA
Enhance
Surge
Main
Application
SEC
Ultra High Speed
ESD+EMI
SML
I/O port
(CSPD+Inductor)
IEC61000-4-2
ESD: 8KV
EMI : 300M Hz
Available
Surge
+Current
Limited
SMP
Power
(CSPD+PTC)
IEC61000-4-5
Fail mode at open
circuit
Under
Developing
SMC
Power
(CSPD+E-cap)
IEC61000-4-5
Breakdown Voltage:
270~470V
Cap: 1uF~4.7uF
Under
Developing
Surge+EMI
CSPD
MOV
GDT
TVS
Sidactor
The Comparison Table
Type
SFI CSPD
MLV
TVS
MOV
GDT
5V~470V
Low
100A~3000A
-55℃~150 ℃
1.5J~ 50J
Low
Low
5V~100V
Low
20A~1200A
-45℃~125 ℃
12J~25J
Low
Low
5V~100V
Low
N.D.
-45℃~125 ℃
N.D.
Low
Low
18V~1800V
High
250A~10000A
-45℃~125 ℃
12J~50J
High
High
75V~6KV
High
2KA~15KA
-45℃~125 ℃
N.D.
Low
Low
<0.5ns
Yes
Yes
Bi-Direction
<0.5ns
Yes
Yes
second
Bi-Direction
<0.5ns
Yes
No
primary side/ second
Single Direction
<10ns
No
Yes
primary
Bi-Direction
<50ns
No
Yes
Primary
Bi-Direction
>10 Times
<0.5ns
No
High
<0.5ns
Yes
Low
<0.5ns
No
High
<10ns
Yes
High
<50ns
No
No
No
No
No
No
No
N0
No
Yes
No
Yes
No
Yes
No
No
Electric Functions
Operating Volt.
Clamping Volt.
Surge Current
Operating Temp.
Load Dump (J)
Leakage Current
Inductance Effective
Applications Functions
Response Time
ESD Protection
Surge Protection
Design Position
Polarity
Reliability
Sparks
Response Time
Degradation
Potential Issues
Extinguish
Explosion
Temperatue Derating
Our Patents
Primary side/ Second
SFI is a professional manufacturer with the ability to produce various overvoltage
protection devices . The excellent ability of innovation makes the new products
own more and better electric functions compared to competitors.
Normal SMD size 2220 , Surge is 1200A
GDT, bigger size and higher operation
voltage can reach above 200V,
SFI –SHN series with ”high surge and
low clamping votlage” can stand :
1210/ 47V~75V/ 4KV~6KV(10x700us)
1206/ 12V
/ 4KV~6KV(10x700us)
SFI-SHC (High Current Series) is
2220/ 24V~75V/ 3000A (8x20us)
1812/ 24V~75V/ 2000A (8x20us)
1210/ 24V~75V/ 1000A (8x20us)
1206/ 24V~75V/ 500A (8x20us)
Higher surge
ability more than
2~3 times
compared to
other products
Higher Surge ,
lower clamping
voltage , more
protection
SHC
SHN
CSPD
SHV
Higher voltage
compared to
conventional
SMD Type
SHA
Higher Load
Dump ability
more than one
time
SMD 3220 , Surge max value is 500A
SMD 2220 ,Load Dump max is 25J,
SFI –SHV (High Voltage Series) can stand :
3220 / 470V / 800A
2220 / 470V / 500A~800A
1812/ 300V / 500A
1210/ 150V~220V/ 500A
SFI-SHA(Automotive) can stand
80J, and with various models :
3220 / 24V~47V/80J
2220 / 24V~47V/50J
1812/ 24V~47V/ 20J
1210/ 24V~47V/ 12J
1206/ 24V~47V/ 6J
0805/ 24V~47V/ 1.5J
Remarks :
SHV Series is UL approval
SFI
1812
SC
240
Logo
Size
Series
Breakdown
voltage
(V)
SFI
1206
1210
1812
2220
SHC
12
24
47
75
1210
SN
750
Breakdown
voltage
(V)
SFI
Logo
Size
Series
SFI
1206
1210
SHN
SFI
2220
SV
431
Logo
Size
Series
Breakdown
voltage
(V)
SFI
1210
1812
2220
3220
SHV
391=39X10
431=43X10
471=47X10
SFI
2220
SA
240
Breakdown
voltage
(V)
Logo
Size
Series
SFI
0805
1206
1210
1812
2220
3220
SHA
- -
A
Surge Current
(8x20 us)
Inner
Code
501=500
102=1000
202=2000
302=3000
- -
120=12V
470=47V
750=75V
24
36
47
102
060
K
Surge Voltage
(10x700us)
Inner
Code
060=6KV
040=4KV
- -
501
A
Surge Current
(8x20us)
Inner
Code
201=20X10
501=50X10
801=80X10
- -
250
J
Load Dump
(J)
Inner
Code
1R5=1.5J
030=3J
060=6J
090=9J
120=12J
250=25J
500=50J
800=80J
SHC Series
Description
This series has the Highest Transient Current and Energy Absorption The construction and technical
makes the products to stand ultra high transient current and high energy absorption. The size 0805 can stand
over 250A in waveform 8/20us and the size 2220 can stand 6500A in some special size . Therefore, under the
same current and energy conditions, the size of SUPER Series is much smaller than other products. The
sparks can be over 10 times in order to make sure the surge ability.
In the global market, the protection components reach such high current ability products only the disk type, we
use the high professional technical ability for the multilayer technology to provide higher products at the small
size. To compare the market MLV series products, new SHC Series upgrade the current ability and also to
show the higher product characteristic than all the OVP products
Features
1.
2.
3.
4.
5.
6.
Application
Ultra high current handle ability , up to 6500A
Several Surge Voltageand Surge Current ability.
Breakdown Voltage Concentration ratio higher 99.5%
High nonlinear exponent α up to 50
Ultra low leakage current < 5 uA
Ultra high temperature up to 125 degree
1. Telecom equipment RJ45/LAN connector
2. Outdoor/ Indoor AP/ IAD
3. Security system IP CAM
4. Base station
5. Low voltage power line
SHC Series Specification
Part No.
Size
Working
Voltage
Breakdown
Voltage
Clamping
Voltage
Leakage
Current
Surge
Current
SFI1206SC120-501A
1206
DC 9V
12V
<25V
10 uA
500A
SFI1206SC240-501A
1206
DC 18V
24V
<47V
10 uA
500A
SFI1206SC470-501A
1206
DC 38V
47V
<75V
5 uA
500A
SFI1206SC750-501A
1206
DC 60V
75V
<100V
10 uA
500A
SFI1210SC120-102A
1210
DC 9V
12V
<25V
15 uA
1000A
SFI1210SC240-102A
1210
DC 18V
24V
<47V
15 uA
1000A
SFI1210SC470-102A
1210
DC 38V
47V
<75V
10 uA
1000A
SFI1210SC750-102A
1210
DC 60V
75V
<100V
10 uA
1000A
SFI1812SC240-202A
1812
DC 18V
24V
<47V
15 uA
2000A
SFI1812SC470-202A
1812
DC 38V
47V
<75V
15 uA
2000A
SFI1812SC750-202A
1812
DC 60V
75V
<100V
15 uA
2000A
SFI2220SC240-302A
2220
DC 18V
24V
<47V
15 uA
3000A
SFI2220SC470-302A
2220
DC 38V
47V
<75V
15 uA
3000A
SFI2220SC560-302A
2220
DC 60V
56V
<90V
15 uA
3000A
SFI2220SC750-302A
2220
DC 60V
75V
<100V
15 uA
3000A
SFI2220SC820-302A
2220
DC 65V
82V
<135V
15 uA
3000A
SHN Series
Description
Telecom systems are all connected by ethernet. The surge suppressors can pass the overvoltage to earth and
clamping the voltage to a level acceptable to the systems. Since the standard of 100/1000M of Ethernet speed,
these precise devices and connectors can be subject to voltage shocks. These series are design for this
ethernet and telecom application and best surge protection for the circuit for these with the high performance.
Features
1.
2.
3.
4.
5.
6.
7.
8.
9.
Application
SMD type to save space (1206 & 1210)
Pass 10/700 us/ 40ohm surge 6KV test
Lower clamping voltage than GDT
Faster response time < 0.5 ns than GDT & Sidactor
No extinguish problem
Bi-directional
Surge strike ability over 30 times
Wide operation temperature - 55 ~ +125°C
Ultra low leakage current < 1 uA
1.Telecom equipment RJ45/Lan connector /
Ethernet
2. Outdoor/ Indoor AP/ IAD
3. Security system IP CAM
4. Low voltage power line DC 12V / AC24V/ PoE
5. ADSL/ XDSL telecom equipment
6. PoE Module
7. HUB Switch
8. VOIP Phone
9. Other Network
SHN Series Specification
SFI Part No.
Size
Application
Voltage
Breakdown
Voltage
Surge
Current
Surge Voltage
SFI1206SN120-060K
1206
DC 3.3V
12V
150A
6KV
SFI1206SN120-040K
1206
DC 3.3V
12V
100A
4KV
SFI1210SN470-060K
1210
AC 24V
47V
150A
6KV
SFI1210SN470-040K
1210
AC 24V
47V
100A
4KV
SFI1210SN750-060K
1210
DC 57V
75V
150A
6KV
SFI1210SN750-040K
1210
DC 57V
75V
100A
4KV
CSPD vs GDT
Function
CSPD
(GDT)
Size
1206, 1210
Φ5 x5.6
1206(3216)
1812(4532)
BDV
12 V
75V
200V
75V
Clamping Voltage
<25 V
>300V
>500V
>300V
Surge (10/700μs)
6 KV
6 KV
4 KV
4 KV
Respond time
<1 ns
> 500ns
>100 ns
>100 ns
No
Yes
Yes
Yes
Extinguishment
SHV Series
UL File No. E334409- VZCA
Description
The general LED lighting with AC input driver will configure a MOV (Varistor) for overvoltage protection, which
can provide surge protection at minimum level. However, there has been a traditional degradation problem of
MOV. Not only increase costs of maintenance, but also not assemble on LED board due to height limit.
Therefore, it will cause loss for production and assembly.
SFI provides excellent and total solution of overvoltage protection for LED light application. We suggest to use
level one or multi-level surge protection components as further protection for sensitive LED driver. Also, we
recommend to use ESD protection component in LED.
Application
Features
1. UL Approval and meet UL requirement
2. Pass surge strike 15 times 8*20uS and keep ability of 500A
3. Pass 6KV/500A 4 times 8/20uS strikes and keep stable function
4. High voltage type up to 470V
5. Easy to design with surface mount design without lead
6. Save labor cost and easy mass production
7. Space and weight savings on PC board
8. No plastic coating guarantees better flammability rating
7 Available in tape and reel for automatic production
1. LED Lighting
2. Power Board
3. Base Station
4. AC power supply
5. Industrial equipment and controller
SHV Series Specification
Part Number
Size
Working
voltage
(V))
Clamping
Voltage
(V)
Surge
Current
8/20uS
(1 times)
Breakdown
Voltage
Surge Current
Max Energy
8/20uS
10/100uS
(15 times)
capacitance
AC
DC
V(1mA)
V
A
A
J
Pf(at 1Khz)
1210SV391-201A
1210
250
320
390
647
200
100
7.2
105
1812SV471-501A
1812
275
385
470
775
500
250
13.5
200
2220SV391-501A
2220
250
320
390
647
500
250
19.8
235
2220SV431-501A
2220
275
350
430
705
500
250
21.6
215
2220SV471-801A
2220
300
385
470
775
800
500
23.7
195
2220SV391-801A
2220
250
320
390
647
800
500
31.8
320
2220SV431-801A
2220
275
350
430
705
800
500
34.7
305
2220SV471-801A
2220
300
385
470
775
800
500
38.0
290
3220SV431-501A
3220
275
350
430
705
500
250
21.0
120
3220SV391-501A
3220
250
320
390
647
500
500
20.5
125
3220SV471-501A
3220
300
385
470
775
500
250
21.6
115
3220SV431-801A
3220
275
350
430
705
800
500
65.0
490
3220SV471-801A
3220
300
385
470
775
800
500
71.2
450
SHA Series
Description
Surge is the voltage happen the abnormal rise or down in short time. Also in the automotive environment have
more strictly request in the Load Dump ability. Our SHA series products have the world highest level load
dump ability and also meet ISO7637 standard pulse 5a requirement. These series have the products for 12V
and 24V systems for automotive Load Dump protection and requirement.
Features
Application
1. Power train System
2. Safety System
3. Comfort System
4. Driver Assistant System
5. Security System
6. Hybrid Electrical
7.Other ECU
1. Meet AEC-Q200 Rev-C requirement
2. Products can withstand ISO-7637-2 pulse 5a/5b
3. Load Dump up to 50 Joule ability highest clamping voltage
function. (Ud 87V, Ri :0.5 ohm , Td: 400ms)
4. Have a good high temperature characteristic 。
(-40℃~125℃)
5. Bidirectional clamping function
SHA Series Specification for 12V/24V Automotive
Part Number
Symbol
Workin
Breakdown
g
Voltage
Voltage
V（1mA）
(±10%)
DC
Clamping
Voltage
Peak
Current
V
A
(for ±1 times)
Load Dump
Jump Start
Voltage（5min）
W LD(J)
(for 10 times)
V JUMP (V)
SFI1206SA240-1R5J
12
24
＜40
400
1.5
24.5
SFI1206SA240-030J
12
24
＜40
400
3
24.5
SFI1206SA240-060J
12
24
＜40
500
6
24.5
SFI1210SA240-030J
12
24
＜40
800
3
24.5
SFI1210SA240-060J
12
24
＜40
800
6
24.5
SFI1210SA240-120J
12
24
＜40
1000
12
24.5
SFI1812SA240-060J
12
24
＜40
1600
6
24.5
SFI1812SA240-120J
12
24
＜40
1600
112
24.5
SFI1812SA240-250J
12
24
＜40
2000
25
24.5
SFI2220SA240-120J
12
24
＜40
3000
12
24.5
SFI2220SA240-250J
12
24
＜40
3000
25
24.5
SFI2220SA240-500J
12
24
＜40
5000
50
24.5
SFI3220SA240-500J
12
24
＜40
5000
50
24.5
SFI3220SA240-800J
12
24
＜40
5000
80
24.5
SFI2220SA470-250J
24
47
＜77
3000
25
45.0
SFI2220SA470-500J
24
47
＜77
4000
50
45.0
SFI3220SA470-500J
24
47
＜77
5000
50
45.0
SFI3220SA470-800J
24
47
＜77
5000
80
45.0
SEA Series
Description
CAN Bus is automotive ESD requirement. It is one of the widely used international bus and it’s smart
electrical control equipment to transfer data between every electronic devices in automobile. It achieves a
regional network control systems in whole vehicle and exchanges information between ECU electronic controls
to become the automotive electronic control network. This series is design for this request.
Features
Application
•Compliant with IEC61000-4-2 contact +/-30 kV
•CAN Bus A, B, C
• LIN
•Other special requirements
•Quick response time<0.5 ns
•Low reverse leakage current (<0.1uA)
•Operating temperature exceeds 125 ° C
•Bi-directional, Bi-clamping
•SMD package
•Products with Lead-Free
•Different capacitance values ​correspond to the different
speed signal bus (CAN Bus)
•Compatible with (ISO7637-2: 2004(E):
•Pulse 1 (max. -50 V),
•Pulse 2 (max. 125 V),
•Pulses 3a and 3b
SEA Series Specification for 12V Automotive CAN BUS
Part Number
Stand-off Breakdown
voltage
Voltage
Clamping
Voltage
Typical
capacitance
ESD
ability
Symbol
VRWM(V)
V（1mA）
V
Typ(pf)
VR=0V
KV
SFI0603EA240-LSP
12
22~30
＜40
50
40
SFI0603EA240-MSP
12
22~30
＜40
25
40
SFI0603EA240-HSP
12
22~30
＜40
10
40
SEA Series Specification for 24V Automotive CAN BUS
SFI0603EA240-LSP
24
22~30
＜40
50
40
SFI0603EA240-MSP
24
22~30
＜40
25
40
SFI0603EA240-HSP
24
22~30
＜40
10
40
IP Camera Application Circuit
Security control systems incorporate outdoor and indoor units. The outdoor
equipment must incorporate protective components to prevent damage to
the circuit and equipment by the lightning protection. It’s essential to install
suitable overvoltage protection components. Here have some recommend
part for the IP camera ESD and Surge solution.
IP CAM ESD & Surge Solution
Interface
Noise
Test STD.
Type
Recommend Part
Package
RJ45 Data (L-G)
Surge
10/700us / 40Ω / 6KV
SHN
SFI1210SN750-060K
1210
RJ45 Data (L-L)
Surge
10/700us / 40Ω / 2KV
SHN
SED323-3R30D0R4-A-11
SOD-323
RJ-45 POE
Surge
10/700us / 40Ω / 6KV
SHN
SFI1210SN750-060K
1210
DC12V (L-G)
Surge
1.2/50us / 2Ω / 4KV
SHC
SFI1812SC470-202A
1812
AC24V (L-G)
Surge
1.2/50us / 2Ω / 4KV
SHC
SFI1812SC470-202A
1812
AC24V (L-L)
Surge
1.2/50us / 12Ω / 2KV
SHC
SFI1210SC470-102A
1210
DC48V
Surge
1.2/50us / 2Ω / 4KV
SHC
SFI1812SC470-202A
1812
Line In
Surge
10/700us / 40Ω / 6KV
SHN
SFI1206SN120-060K
1206
Line In
ESD
IEC61000-4-2 / 8KV
MLE
SFI0402-050E101NP
0402
Alarm In
Surge
10/700us / 40Ω / 6KV
SHN
SFI1206SN120-060K
1206
Alarm In
ESD
IEC61000-4-2 / 8KV
MLE
SFI0402-050E101NP
0402
Speaker Output
Surge
1.2/50us / 42Ω / 2KV
SHC
SFI1206SC120-040K
1206
Speaker Output
ESD
IEC61000-4-2 / 8KV
MLE
SFI0402-050E101NP
0402
Alarm Output
Surge
1.2/50us / 42Ω / 2KV
SHC
SFI1206SC120-040K
1206
Alarm Output
ESD
IEC61000-4-2 / 8KV
MLE
SFI0402-050E101NP
0402
RS485
Power
Contact
special Case
MOV
14D471K
14Φ
RS485
Surge
10/700us / 40Ω / 6KV
GDT
RS485
ESD
IEC61000-4-2 / 8KV
MLE
SED323-150D100-B-10
SOD-323
BNC
Surge
10/700us / 40Ω / 6KV
GDT
BNC
ESD
IEC61000-4-2 / 8KV
MLE
SFI0402-050E050PP
0402
Reset Pin
ESD
IEC61000-4-2 / 8KV
MLE
SFI0402-050E101NP
0402
SD Card
ESD
IEC61000-4-2 / 8KV
MLE
SFI0402-240E0R8PP
0402
USB
ESD
IEC61000-4-2 / 8KV
MLE
SUC0402-240E0R2PP
0402
HDMI
ESD
IEC61000-4-2 / 8KV
MLE
SUCTD1004-050S0R4P-
Array
IP Camera Application Circuit
Security and control systems including the main front parts、transmission、control、alarm parts、
systems power supply parts, list the recommend parts as following:
IP CAM interface for ESD & Surge Solution
Interface
Type
Requirements
Part No.
Size
Ref. Circuit
RJ45 Data
Surge
10x700 μs/40 Ω/6KV
SHN
SFI1206SN120-060K
1206
Ckt(1)
RJ45 PoE
Surge
10x700 μs/40 Ω/6KV
SHN
SFI1210SN750-060K
1210
Ckt(1)
AC 24V/DC12V
Surge
10x700 μs/40 Ω/6KV
SHN
SFI1210SN470-060K
1210
Ckt(2)
SD Card
ESD
IEC61000-4-2/8KV
MLE
SFI0402-120E050PP-LF
0402
Ckt(3)
USB
ESD
IEC61000-4-2/8KV
MLE
SFI0402-240E2R5PP-LF
0402
Ckt(4)
Video
ESD
IEC61000-4-2/8KV
MLE
SFI0402-120E050PP-LF
0402
Ckt(2)
Audio
ESD
IEC61000-4-2/8KV
MLE
SFI0402-050E330NP-LF
0402
Ckt(2)
Others I/O
ESD
IEC61000-4-2/8KV
MLE
SFI0402-050E330NP-LF
0402
Ckt(2)
Indoor I/O
Surge
IEC61000-4-5/8x20μs
MLE
SFI0805-120E560NP-LF
0805
Power End Station
Series
Lan Transformer
SHN
1
CKT(1)
Data Pair
2
MLE
3
1A
2A
3A
4A
5A
6A
7A
8A
Data Pair
6
R
R
PoE(+)
RJ45
Spare Pairs
CKT(2)
PoE(-)
Power // I/O
4, 5 for 48V+
PoE(+)
Spare Pairs
PoE(-)
CKT(3)
7, 8 for Vss
The power surge protection solution depends if the ground is connected to earth.
CKT(4)
1
2
3
4
Vbus
D+
DUSB
CLK
CMD
Data0
Data1
Data2
Data3
6
5
4
3
2
1
SD Card
Telecom Application Circuit
The traditional surge solution is to use GDT for protection, when transient voltage occurred, GDT will have a
period of delay between direct current discharge and exact working. Therefore, it’s generally not only use GDTs to
protect electronic equipments and add some protective components after GDT. That’s the reason why GDT has
slow response and remains voltage.
Due to GDT extinguish problem, original Solution GDT have to add MOV or Sidactor
Original Circuit
RJ45
1
2
3
4
5
6
7
8
RX2RX2+
TX1TX2-
Old
TX2+
TX1+
RX1-
+
RX1+
NEW=== Our
super solution
GDT Disadvantage : On application of PoE, due to the arc voltage is less than working after
GDT discharge. Bcause the GDT will break and burned out and short, it becomes huge
damage due to it’s extinguish problem. In order to solve the issue, it’s usually to put series
of varistors or Sidactor after GDT to to prevent extinguishment. Our CSPD strong
characteristic in 1. Chip Size 2. High flow ability
3. Low clamping volt 4. Quick response time and provide better solution than that.
Circuit Recommend
Power End Station
Ethernet(RJ45)
Lan Transform
Lan Transformer
1
2
1
(Fig. 2)
3
Data Pair
(Fig.3)
4
5
2
6
7
8
RX2RX2+
TX1TX2TX2+
TX1+
RX1RX1+
3
1A
2A
3A
4A
5A
6A
7A
8A
1236 / 4578
Data Pair
6
R
R
PoE(+)
RJ45
Spare Pairs
PoE(-)
4, 5 for 48V+
PoE(+)
Spare Pairs
PoE(-)
7, 8 for Vss
For 10/100 M
For 1G
The circuit of negative power depends if there is connected to earth.
RJ 45 connector application circuit
Power over Ethernet (PoE) is a technology which transfer
power and data through ethernet cables. They are including
telecom systems, IP phone, wireless station, IP camera, hub,
computers which get power by PoE. Therefore, it must be use
surge protection for Ethernet RJ45 connectors. In telecom
systems are connected by Ethernet and will also have the surge
or voltage problem caused by power off by the surge. The surge
protective device and pass the overvoltage to earth and clamp
the voltage to avoid the system damage and broken. Now the
standard of 100/1000M of ethernet speed requirement and these
precise devices protected is more important.
Now more popular in networking application in indoor and outdoor security all need for the overvoltage and
lightning protected. The interface of RJ45, the circuit is 4 wires protection (1,2/3,6). In order to have full
protection for 8 wires (1, 2、3,6、4,5、7,8）and prevent the surge attacked, our CSPD products have the
good characteristic and small size devices conjunction with the wires an will provide the protection.
Ethernet (RJ45) surge protection
Mode
Test Standard
Series
L-G
10x700μs/40 ohm /6KV
SHN
L-G
10x700 μs/40 ohm/4KV
SHN
L-L
10x700 μs/40 ohm/4KV
L-L
Package
Cap.
SFI1206SN120-060K
1206
--
SFI1206SN120-040K
1206
---
TVS(A)
SEDSO8-2R8S050-A-11
SO8
5 pF
10x700 μs/40 ohm/2KV
TVS (B)
SEDSO8-2R8S050-B-11
SO8
5 pF
L-L
10x700 μs/40 ohm/2KV
TVS(F)
SEDSO8-2R8S020-F-11
SO8
2pF
L-L
10x700 μs/40 ohm/2KV
TVS
SED1006-3R30D7R0-D-11
0402
7pF
L-L
10x700 μs/40 ohm/2KV
TVS
SED323-3R30R0R4-A-11-LF
SOD323
0.4pF
Part No.
Application
Part No.
Surge
(10x700 μs)
SFI1206SN120-060K
Networking(Ethernet) Data
6KV
SFI1206SN120-040K
Networking(Ethernet) Data
4KV
SFI1210SN470-060K
Power Line
6KV
SFI1210SN470-040K
Power Line
4KV
SFI1210SN750-060K
PoE
6KV
SFI1210SN750-040K
PoE
4KV
RJ45 Application Circuit
Ethernet (RJ45) Surge Protection
Test Mode
Test Standard
Series
L-G
10x700 μs/40 ohm /6KV
SHN
L-G
10x700 μs/40 ohm/4KV
SHN
L-L
10x700 μs/40 ohm/4KV
L-L
Part No.
Package
Speed
SFI1206SN120-060K
1206
Both
SFI1206SN120-040K
1206
Both
TVS(A)
SEDSO8-2R8S050-A-11
SO8
10/100
10x700 μs/40 ohm/2KV
TVS (B)
SEDSO8-2R8S050-B-11
SO8
10/100
L-L
10x700 μs/40 ohm/2KV
TVS(F)
SEDSO8-2R8S020-F-11
SO8
1G
L-L
10x700 μs/40 ohm/2KV
TVS
SED1006-3R30D7R0-D-11
0402
1G
Lan Transformer
Tx+
1
SHN
2
TVS
Tx-
Rx+
3
RJ45
1A
2A
3A
4A
5A
6A
7A
8A
6
Rx-
Tx+
TVS Package
4
5
Tx-
Rx+
7
8
R
R
R
Rx-
Type A /F
So8
Single X 4 pcs
R
SO8 X 1 pcs
Type B
SO8
Line to Line
Line to Ground
TVS
Parameter
VRWM
(max)
VB
(min)
IT
(5A max)
VC
(5A)
VC
(24A)
IR
(uA)
CT
(pF)
Package
SEDSO8-2R8S050-A-11-LF
2.8
3
1
8.5
15
5
5
SO8
SEDSO8-2R8S050-B-11-LF
2.8
3
1
8.5
15
5
5
SO8
SEDSO8-2R8S020-F-11-LF
2.8
3
1
8.5
15
5
2
SO8
Reference Application Circuit
SFI Automotive Load Dump Solution
SFI USB ESD Solution
SFI DC Power Solution
SFI Auto CAN BUS ESD Solution
R1
SMD type for AC power
over voltage protection
R2
BD
Fuse
Driver IC
Surge Protection
SMD package to replace Dip type
LED Matrix
DC to DC
Converter
Surge
Protection
device with
DC Low voltage
Surge Protection
SHV
Type
SHV
SHC
MLE
device with
AC High voltage
Part Number
SHC
Working Voltage
Breakdown
Voltage
ESD Protection
device with
DC Lower voltage
MLE
Clamping
Voltage
Surge Current
Surge Current
(8/20 μs/1 time) (8/20 μs/ (15 times)
Symbol
AC
DC
V（1mA）
V
A
A
SFI1210SV391-201A
250
320
390(±10%)
647
200
100
SFI2220SV391-801A
250
320
390(±10%)
647
800
500
SFI2220SV431-801A
275
350
430(±10%)
705
800
500
SFI2220SV471-801A
300
385
470(±10%)
775
800
500
SFI3220SV431-801A
275
350
430(±10%)
705
800
500
SFI3220SV471-801A
300
385
470(±10%)
775
800
500
SFI1206SC240-501A
14
18
24(±10%)
45
500
ND
SFI1210SC240-102A
14
18
24(±10%)
45
1000
ND
SFI0603-050E220NP
3.3
5
15~25
34
ND
ND
SFI0603-120E100NP
8
12
27~42
60
ND
ND
SFI Electronics Technology Inc.
Category B
Category C
Category A
Service drop
Service
entrance
Transformer
●
●
●
●
Outlet
Utility pole
Meter
Disconnect
breaker
Outlet
30 ft
60 ft
Category C: Service entrance, more severe environment: 10kV, 10kA surge.
Category B: Downstream, 30 ft from category C, less severe environment: 6kV, 3kA surge.
Category A: Further downstream, 60 ft from category C, least severe environment: 6kV, 0.5kA surge.
Category
Voltage
Current
Impedance
1.2/50 μs
8/20 μs
ohm
C(Outdoor)
6KV
3KA
2
Outdoor Commercial , Industrial / Parking
B
6KV
3KA
2
Lighting near Service Entrance
A(Indoor)
6KV
0.5KA
12
Indoor /Offices/ Retail
United States
Application
Europe / America
Taiwan
China
Surge Immunity
1.2*50 μs/ 8*20 μs
LED light bulbs inside
IEEE62.41.2 Ring wave
2.5KV 100Khz Class A
IEC/EN61547
(IEC61000-4-5)
500V/250A,1KV/500A
CNS14676-5
(IEC/EN61000-45)
500V/250A
1KV/500A
GB/T18595
(IEC/EN61547)
500V/250A
1KV/500A
Surge Immunity
1.2*50 μs/ 8*20 μs
LED outdoor
Luminaires
IEEE62.41.2(Category C)
6KV/3KA
20KV/10KA
IEC/EN61547
IEC/EN61000-4-5
4KV/2KA,
6KV/3KA,10KV/5KA
IEC/EN61000-4-5
4KV/2KA
IEC/EN61000-4-5
4KV/2KA
Safety
UL8750, UL1310
UL1993, UL1598
IEC/EN62560,IEC/EN60598
IEC/EN61347,IEC/EN62031
CNS STD.
GB24819-2009
IEC62031
Character
Test Level
Device
Self-ballasted Lamp & Semi-luminaries
Luminaries & independent auxiliaries
< =25W
> 25W
Surge waveform
1.2*50µs
1.2*50µs
1.2*50µs
Line to Line
1.0KV
1.0KV
1.0KV
Line to Ground
1.0KV
1.0KV
2.0KV
SFI Electronics Technology Inc.
TEL : +886-3-3506998 , Fax: +886-3-
SFI
Service Feedback
Immediately
Taiwan Headquarter：
Address：
No.6, Lane 340, Shan Ying Road
Guishan Taoyuan 333 Taiwan
TEL ：+886-3-3506998
FAX： +886-3-3507689
E-mail：[email protected]
[email protected]
Shenzhen China ：
Address：
Room 208, Building 212, Tairan
Industry Park Futain District,
Shenzhen China
TEL：+86-18676730214
TEL：+86-755-83589593
FAX： +86-755-83589574
E-mail：[email protected]
ShangHai China：
Address：
Room 601, No.11 of 111 Sub-Lane
South City, Lane 7580, Humin
Road, Shanghai China
TEL：+86-18601216474
TEL：+86-21-62775426
FAX： +86-21-62776349
E-mail：[email protected]