Download General-Purpose Failsafe Moulded Wirewound Resistors

Resistors
General-Purpose Failsafe
General-Purpose Failsafe
Moulded Wirewound Resistors
Moulded Wirewound Resistors
Welwyn Components
SP20
/ SP20F Series
SP20/SP20F
Series
SP20F UL1412
recognised fusing
replacement
for*BW20/BW20F
• Drop-in
0.1 ohm to 1200 ohms
fusing characteristics
• Predictable
F version has flame resistant coating
wattrated
rated
with
dimensions
• 11 watt
with
1/21/2
wattwatt
dimensions
ohmreplacement
to 1200 ohms
Drop-in
BW20 / BW20F
• 0.1
Weldable and
solderable
magnetic
lead leads
and
solderable
magnetic
• Weldable
TCR’s as low as ±150 ppm/°C standard (custom TC’s available)
Lead free, RoHS compliant construction available
* UL file number E234469
All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2)
Electrical Data
Type
SP20
SP20F
EIA RS-344 Style
CRU 1
MIL-R-11 Style
RC20/RC32
Resistance Range
ohms
0R1 to 1k2
0R1 to 1k
UL Recognised Range
ohms
N/A
1R0 to 470R
Tolerance
%
Power rating
±5, ±10
watts
1 at 50°C
1 at 50°C
0.75 at 70°C
0.75 at 70°C
0.5 at 100°C
-
Derating to 0 at 160°C
Derating to 0 at 160°C
√PR
Maximum continuous working voltage
Minimum insulation resistance
dry
10,000 Meg
wet
100 Meg
Minimum dielectric withstanding volts
ATM
700V
Reduced pressure
RMS
450V
Hotspot temperature rise
120°C at 1 watt
Current noise
Negligible
Physical Data
Dimensions (mm)
Type
L
D
d
f
SP20
9.91±0.25
3.56±0.20
0.813±0.05
38.1±3.2
SP20F
9.91±0.25
3.56±0.20
0.813±0.05
38.1±3.2
Resistive Element
All resistor types have resistance alloy winding on a braided
fibreglass substrate. Intermediate silicone coatings are used to
enhance processibility and to provide protection to the
resistive element.
Termination
The SP20 and SP20F resistors are terminated using an alloy
coated copper flashed steel lead welded to a cap of the same
material. This termination assembly is mechanically crimped,
utilizing an improved crimp design, to the resistive element.
d
D
L
f
Encapsulation
The SP20 and SP20F are encapsulated utilizing a compression
molded phenolic plastic material. The SP20F has a flame
resistance coating applied over the resistive element to
provide flammmability protection when destructive overloads
may occur.
Marking
All products are marked utilizing heat and solvent resistant
colour code bands consistent with EIA/MIL requirements. The
first band is double width to designate wirewound
construction. A fifth band, blue in colour, is used for
flameproof identification.
GeneralNote
Note
General
Welwyn
Components
reserves
right
to make
changesspecification
in product without
specification
notice or liability.
TT
Electronics
reserves the
right tothe
make
changes
in product
noticewithout
or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
BI Technologies IRC Welwyn
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
©
TT Electronics
Telephone:
+44 (0) plc
1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com
A subsidiary of
TT electronics plc
http://www.ttelectronics.com/resistors
Issue B · 03.02
07.14
95
General-Purpose
Failsafe
General-Purpose
Failsafe
General-Purpose
General-Purpose
Failsafe
Moulded
Wirewound
Resistors
Moulded
Wirewound
Resistors
Moulded
Moulded
Wirewound
Resistors
Make Possible
SP20/SP20F Series
Series
SP20/SP20F
SP20/SP20F
SP20/SP20F Series
Series
Welwyn Components
Performance
Performance Data
Test
Test
TTeem
mppeerraattuurree ccooeeffffiicciieenntt ((ppppm
m))
ppppm
m//°°C
C
DDiieelleeccttrriicc w
wiitthhssttaannddiinngg vvoollttaaggee
M
o
m
e
n
t
a
r
Momentaryy oovveerrllooaadd
SSPP2200
SP20F
<<11RR ±±880000
<<11R ±800*
≥1R
≥1R ±150
±150
≥1R
≥1R ±150
±150
RRM
MSS
%
%
770000VV
55
LLoow
w tteem
mppeerraattuurree ooppeerraattiioonn
TTeem
mppeerraattuurree ccyyccllee
%
%
%
%
55
55
HHuum
miiddiittyy
LLooaadd lliiffee
%
%
%
%
55
55
%
%
%
%
55
55
SP20 / SP20F Series
General
Purpose Failsafe
TTeerrm
miinnaall ssttrreennggtthh
Molded
Resistor
RReessiissttaannccee ttoo ssoolldWirewound
deerr hheeaatt
*0.1
*0.1 ohm
ohm SP20F
SP20F <1000
<1000 ppm.
ppm.
SP20
SP20 Power
Power Derating
Derating
SP20F
SP20F Power
Power Derating
Derating
SP-20 Power Derating Curve
SP-20F Power
Derating Curve
2.5
2.5
Power
(watts)
Power
(watts)
2.0
Power (watts)
Power (watts)
2.0
1.5
1.0
0.5
0
(watts)
Power
(watts)
Power
2.5
2.5
0
1.5
1.0
0.5
0
Ambient
(°C)
50
100Temperature
150
200
Ambient Temperature (°C)
0
50
1.5
1.5
1.0
1.0
0.5
0.5
0
00
0
100
50
100
150
50
100
150
Ambient Temperature (°C)
150
Ambient200
Temperature (°C)
200
200
Ambient Temperature (°C)
Ambient Temperature (°C)
SP20F Typical Fusing
SP20F Typical Fusing
SP20 and SP20F Temperature Rise
SP20 and SP20F Temperature Rise
SP-20 and SP20F
Temperature Rise Chart
SP20F Fusing Characteristic
(Maximum & Typical Fusing Times)
1000
120
Temp
(°C)
Temp
(°C)
Temperature Rise (°C)
Power
(watts)
Power
(watts)
2.0
2.0
Maximum - all values
100
80
60
40
Fusing Time (s)
0.1 ohm
1 ohm
0.1 ohm
10 ohm
1 ohm
100
ohm
10 ohm
1000
ohm
100 ohm
1000 ohm
Time (seconds)
Time (seconds)
100
Typical
- 1R0
10
Typical
- 470R
Power Input (watts)
Power Input (watts)
20
Ordering
Procedure
Ordering
Procedure
0
Example:
SP20F at 470 ohms and 5% tolerance tape packed on a reel of 4000 pieces –
1
0
0.5
1.0
1.5
2.0
Example: SP20F at 470 ohms and 5% tolerance0.1tape packed
on a– reel
of J4000
SP20F
470R
I pieces –
Power Input (watts)
10
15
20
25
35
40
SP20F
– 470R
J30 I
Type
Initial Power (W)
Type (use IEC62 code)
Value
45
50
55
60
Value (use IEC62 code)
Tolerance (use IEC62 code)
JTolerance
5%
K
10% code)
(use
IEC62
Ordering Data
J Part
5% No.
Sample
Packing
K
10%
SP20F
1800
J
LF
XXX
I
Tape 4000/reel
Standard
Packing
TT Electronics reserves the right to make changes in product specification without notice or liability.
BI Technologies IRC Welwyn
TT Electronics reserves the right to make changes in product specification without notice or liability.
http://www.ttelectronics.com/resistors
General Note
General
IRC
Type
I NoteTape
Standard
All information is subject to TT4000/reel
Electronics’ own data
and is considered accurate at time of going to print.
96
Recognition
©
Components
Limited
Northumberland
NE22
7AA,
UK to print.
All Welwyn
information
is subject to
TT Electronics’
ownBedlington,
data and is considered
accurate
at time
of going
ULTT
= UL1412
recognised
characters)
©
Electronics
plc (optional
Telephone:
+44 (0) 1670
822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
© TT Electronics
plc 822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com
Telephone:
+44
(0) 1670
Resistance
Range
(First three significant figures plus fourth digit multiplier)
www.ttelectronicsresistors.com
Issue B · 03.02
07.14
Issue B · 03.02
General-Purpose Failsafe
Moulded Wirewound Resistors
SP20/SP20F Series
Ordering Procedure
This product has two valid part numbers:
European (Welwyn) Part Number: SP20FUL-180RJI (SP20F with UL recognition, 180 ohms ±5%, Pb-free)
S
P
2
0
F
U
1
L
-
1
8
2
0
R
3
1
2
3
Type
UL Status
Value
J
I
4
5
4
5
Tolerance Packing & Termination Finish
SP20
R = ohms
UL = UL recognised
SP20F (SP20F only, see Electrical K = kilohms
Data for applicable values.)
J = ±5%
K = ±10%
I = Standard packing & Pb-free
Tape pack 4000/reel
USA (IRC) Part Number: SP20FUL1800JLF (SP20F with UL recognition, 180 ohms ±5%, Pb-free)
S
P
2
0
F
U
1
1
L
2
2
1
8
0
0
3
J
4
L
F
5
3
6
5
6
Packing &
Type
UL Status
Value
Tolerance
Custom Code
Termination Finish
SP20
3 digits + multiplier J = ±5%
Omit for SnPb
Optional
UL = UL recognised
SP20F (SP20F only, see Electrical
K = ±10%
LF = Pb-free
R = ohms for
Data for applicable values.) values <100 ohms
Tape pack 4000/reel
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
4
BI Technologies IRC Welwyn
http://www.ttelectronics.com/resistors
© TT Electronics plc
07.14