Trimmer Potentiometer Resistance Codes Explained

10 Common 4-Band Resistor Values

 

10 Common 4-Band Resistor Values

Quick Reference for Electronics Repair

# Resistance Color Bands Tolerance

4-Band Reading Pattern:

1st band = first digit · 2nd band = second digit · 3rd band = multiplier · 4th band = tolerance

The color-to-value system used above agrees with the standard resistor color-code tables published by Vishay and DigiKey.

 Capacitance is read in picofarads (pF)

For a five-band capacitor

1st band: First significant digit

2nd band: Second significant digit

3rd band: Multiplier — number of zeros to add

4th band: Tolerance

5th band: Rated working voltage

Color → Digit

Color Digit

Black 0

Brown 1

Red 2

Orange 3

Yellow 4

Green 5

Blue 6

Violet 7

Gray 8

White 9

Common Tolerance Codes

Green: ±5%

White: ±10%

Voltage Codes Shown in This Scheme

Red: 250 V

Yellow: 400 V

Reading Examples

Red – Red – Orange – Green – Red

22 × 1,000 pF = 22 nF

Tolerance: ±5%

Voltage rating: 250 V

Orange – White – Red – White – Yellow

39 × 100 pF = 3,900 pF = 3.9 nF

Tolerance: ±10%

Voltage rating: 400 V

Brown – Black – Orange – White – Yellow

10 × 1,000 pF = 10,000 pF = 10 nF

Tolerance: ±10%

Voltage rating: 400 V

Yellow – Violet – Orange – White – Red

47 × 1,000 pF = 47,000 pF = 47 nF

Tolerance: ±10%

Voltage rating: 250 V

Important: Capacitor color-code conventions can vary by capacitor type and coding system, so the component's datasheet or manufacturer marking should be used when available.

I corrected the “240 V” shown in the supplied image to 250 V for the red voltage band, because the referenced capacitor color-code tables identify red as 250 V in this coding scheme.

 AMS1117 FIXED-OUTPUT LDO REGULATOR

Tab — VOUT (for the standard SOT-223 configuration)

The fixed-output versions listed above are documented for the AMS1117 family; exact specifications  can vary by  manufacturer and part number.

 AMS1117 FIXED-OUTPUT LDO REGULATOR

Common Fixed Output Versions

5.0 V — AMS1117-5.0

3.3 V — AMS1117-3.3

2.5 V — AMS1117-2.5

1.8 V — AMS1117-1.8

1.5 V — AMS1117-1.5

1.2 V — AMS1117-1.2

SOT-223 PINOUT

Pin 1 — GND

Pin 2 — VOUT

Pin 3 — VIN