Electronic Component Markings

How we distinguish between identical looking components

Electronic Components

• Identifying markings we know• Identifying markings we don’t know

Cells and Batteries

Chemistry Voltage

NiCad 1.2 V

NiMH 1.2 V

Alkaline 1.5 V

Li-Fe 1.5 V

Lead-Acid 2.0 V

Lithium-Ion 3.7 V

4-Band Resistors

5-Band Resistors

Resistor Color Code

Color Code Practice #1

Tolerance Marking

Color Code Practice #2

Resistor Tolerance, part two

• Tolerance isn’t just a percentage• Tolerance is also a valid range

Disk Capacitors

Disk Capacitors

Electrolytic Capacitors

Diodes

LEDs

Transistors

Integrated Circuits