Lab Inventory: Discete Electronic Components

The following tables may help you identify commonly used parts we have available in the lab supply. The term “discrete components” in electronics refers to individual passive parts like resistors, capacitors, and switches. It sometimes includes simple active components like transistors, but does not includes Integrated Circuits (ICs) or modules.

For a searchable index of all lab parts, please see Physical Computing Lab Inventory.

1/4 Watt Resistors

The lab stocks carbon-composition resistors with 1/4 Watt rating and 5% tolerance in a wide range of values. The color bands encode the value and tolerance: Wikipedia: resistor color code

1/4 Watt Resistors

Value	Lab Part #	Description
10Ω	Lab Part 0007	10Ω resistor - brown black black
33Ω	Lab Part 0009	33Ω resistor - orange orange black
47Ω	Lab Part 0011	47Ω resistor - yellow violet black
100Ω	Lab Part 0013	100Ω resistor - brown black brown
150Ω	Lab Part 0015	150Ω resistor - brown green brown
220Ω	Lab Part 0017	220Ω resistor - red red brown
270Ω	Lab Part 0019	270Ω resistor - red violet brown
330Ω	Lab Part 0021	330Ω resistor - orange orange brown
470Ω	Lab Part 0023	470Ω resistor - yellow violet brown
680Ω	Lab Part 0025	680Ω resistor - blue grey brown
1kΩ	Lab Part 0027	1kΩ resistor - brown black red
1.5kΩ	Lab Part 0029	1.5kΩ resistor - brown green red
2kΩ	Lab Part 0031	2kΩ resistor - red black red
2.2kΩ	Lab Part 0033	2.2kΩ resistor - red red red
2.7kΩ	Lab Part 0035	2.7kΩ resistor - red violet red
3.3kΩ	Lab Part 0037	3.3kΩ resistor - orange orange red
4.7kΩ	Lab Part 0039	4.7kΩ resistor - yellow violet red
5.1kΩ	Lab Part 0041	5.1kΩ resistor - green brown red
5.6kΩ	Lab Part 0043	5.6kΩ resistor - green blue red
10kΩ	Lab Part 0045	10kΩ resistor - brown black orange
15kΩ	Lab Part 0047	15kΩ resistor - brown green orange
22kΩ	Lab Part 0049	22kΩ resistor - red red orange
33kΩ	Lab Part 0051	33kΩ resistor - orange orange orange
47kΩ	Lab Part 0053	47kΩ resistor - yellow violet orange
100kΩ	Lab Part 0055	100kΩ resistor - brown black yellow
470kΩ	Lab Part 0057	470kΩ resistor - yellow violet yellow
1MΩ	Lab Part 0059	1MΩ resistor - brown black green
10MΩ	Lab Part 0061	10MΩ resistor - brown black blue

Diodes

Typical rectifier diode used as flyback diode in transistor driver circuits to absorb inductive voltages. Lab Part 4004.