Component Marking

Question 1

Stripe on (polarized) capacitor indicates:

Answer 1

negative terminal (cathode)

Question 2

Long leg of component usually indicates:

Answer 2

positive side (anode if a diode)

Question 3

Smaller capacitor label “xxy” means:

Answer 3

xx * 10^y picofarads

Question 4

Small Capacitor mark “106” indicates:

Answer 4

10 microfarads (10,000,000 picofarads)

Question 5

Small Capacitor mark “334” indicates:

Answer 5

333 nanofarads (333,000 picofarads) .333 microfarads

Question 6

4-band Resistor band meanings

Answer 6

<1><2> * 10^<3> ohms; <4> = tolerance

Question 7

5-band resistor band meanings

Answer 7

<1><2><3> * 10^<4> ohms; <5> = tolerance

Question 8

6-band resistor band meanings

Answer 8

<1><2><3> * 10^<4> ohms; <5> = tolerance; <6> = temp coefficient

Question 9

Resistor digit: Black

Answer 9

0

Question 10

Resistor digit: Brown

Answer 10

1

Question 11

Resistor digit: Red

Answer 11

2

Question 12

Resistor digit: Orange

Answer 12

3

Question 13

Resistor digit: Yellow

Answer 13

4

Question 14

Resistor digit: Green

Answer 14

5

Question 15

Resistor digit: Blue

Answer 15

6

Question 16

Resistor digit: Violet

Answer 16

7

Question 17

Resistor digit: Gray

Answer 17

8

Question 18

Resistor digit: White

Answer 18

9

Question 19

Resistor multiplier: Silver

Answer 19

0.01

Question 20

Resistor multiplier: Gold

Answer 20

0.1

Question 21

Resistor multiplier: Black

Answer 21

1

Question 22

Resistor multiplier: Brown

Answer 22

10

Question 23

Resistor multiplier: Red

Answer 23

100

Question 24

Resistor multiplier: Orange

Answer 24

1,000 (1k)

Question 25

Resistor multiplier: Yellow

Answer 25

10,000 (10k)

Question 26

Resistor multiplier: Green

Answer 26

100,000 (100k)

Question 27

Resistor multiplier: Blue

Answer 27

1,000,000 (1M)

Question 28

Resistor multiplier: Violet

Answer 28

10,000,000 (10M)

Question 29

Resistor tolerance: Silver

Answer 29

+/- 10%

Question 30

Resistor tolerance: Gold

Answer 30

+/- 5%

Question 31

Resistor tolerance: Brown

Answer 31

+/- 1%

Question 32

Resistor tolerance: Red

Answer 32

+/- 2%

Question 33

Resistor tolerance: Green

Answer 33

+/- 0.5%

Question 34

Resistor tolerance: Blue

Answer 34

+/- 0.25%

Question 35

Resistor tolerance: Violet

Answer 35

+/- 0.1%

Question 36

SMD Resistor with three numbers means:

Answer 36

\<1\>\<2\> \* 10^\<3\> ohms

Question 37

SMD Resistor with two numbers and a letter

Answer 37

E96 coding system

Question 38

Answer 38

Zener Diode

Question 39

Answer 39

Shottky Diode

Question 40

Answer 40

N-channel Enhancement-mode MOSFET (NMOS)

Question 41

Answer 41

P-channel Enhancement-mode MOSFET (PMOS)

Question 42

Answer 42

N-channel Depletion-mode MOSFET

Question 43

Answer 43

P-channel Depletion-mode MOSFET

Question 44

SMD Resistor with mark: *n*R*n*

Answer 44

*n.n* Ω

Question 45

Tolerances of SMD Resistors

Answer 45

In most cases, you'll find that a surface mount resistor marked with the 3-digit code has a tolerance of 5% and a resistor marked with 4-digit code or the new EIA-96 code has a tolerance of 1% or less.