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Circuit Creations
Surface Mount Device Practice Kit 110
Introduction
Welcome to the exciting world of Circuit Creations electronics kits. To assemble this kit you will need
the following basic items- 25W to 40W soldering iron, rosin core flux solder, tweezers to hold and
manipulate components, and possibly a magnifier to assist with seeing the smaller components.
This kit contains over 50 common SMD (Surface Mount Device) components providing a great
opportunity to learn and practice assembling with surface mount electronics. There are 7 different
SMD component types and similar components are easy to identify by the quantity of each type
provided in the kit. To test that you have assembled the kit correctly, the circuitry functions as an
LED (Light Emitting Diode) flasher. Whether you’re a beginner interested in practicing,
experimenting, or learning about surface mount electronics or a professional interested in teaching,
training, or adjusting SMD reflow process parameters this kit is a great fit.
Surface Mount Device Practice K110 Features
 Over 50 SMD components with ample spacing to
facilitate assembly on the printed circuit board
 Each component type is clearly marked and
located in sections on the printed circuit board
 Includes 7 types of common SMD components in
a variety of sizes
 Compact, 2.2” x 1.7”, single sided Printed
Circuit Board (PCB) with 4 mounting holes
 LED indicator flashes to test that you have
assembled the kit correctly
 Operates from a 9V battery (not included)
Circuit Assembly
There are many good references and videos on the web (e.g. search for “smd soldering tutorial”) to
assist with assembly of surface mount electronics. The assembly instructions for the components that
are included with Kit K110 are as follows:
Designator
U1
C1-C15
C16-C20
R1-R20
R21-R30
LED1
Q1
J1
Value
SOIC14
0603 Capacitor
0805 Capacitor
0603 Resistor
0805 Resistor
0805 LED
SOT23 Transistor
9V Battery Clip
Assembly Instructions
Notch in package must match notch printed on the PCB, or dot on top of
package must be on the same side as the dot on the PCB.
Identified by quantity of 15. Polarity does not matter.
Identified by quantity of 5. Polarity does not matter.
Identified by quantity of 20. Polarity does not matter.
Identified by quantity of 10. Polarity does not matter.
Polarity matters. Dot on package goes on pad with C next to it. See Fig 1.
This component has 3 leads and can only be installed one way.
Red wire goes in square pad marked VIN.
Not all component locations on the PCB are part of the functional circuit for the LED flasher.
See www.circuitcreations.com for general assembly helpful hints.
Top View
Bottom View
Figure 1- Component marking for surface mount LED1 (dot is on the topside of the component).
Surface Mount Device Practice Kit 110
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Operation
Do not use the K110 SMD Practice Kit with any life support system or any other
application where unintended operation might cause harm to people or damage property.
Always exercise caution when connecting the K110 circuit to any other circuit.
To test that you have assembled the circuit correctly connect a 9V battery (not included) so that the
LED flashes. The LED color and flash rate can vary from kit to kit.
There is sufficient spacing around each component so that it can be observed, probed, or measured
to further enhance your skill and understanding of surface mount electronic components.
Schematic
Surface Mount Device Practice Kit 110
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