Passive Components Codes Guide

GUIDE: Passive Components Codes Guide

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Codes for Resistors, Capacitors, Inductors, Termistors NTC and PTC, Varistors VDR.


Pictures
Color Code
Alpha-Numeric Code
One Letter Code
Pictures

Resistors
Resistor

5 Band Ceramic Capacitors
5 Band Ceramic Capacitors

Radial or Ayial Lead Ceramic Capacitors (6 Dot or Band System)
Radial or Ayial Lead Ceramic Capacitors (6 Dot or Band System)

Ceramic Disk Capacitors
Ceramic Disk Capacitors

Ceramic Feed Through Capacitors
Ceramic Feed Through Capacitors

Dipped Tantalum Capacitors
Dipped Tantalum Capacitors

Film Type Capacitors
Film Type Capacitors

5 Dot or Band Ceramic Capacitors (one wide band)
5 Dot or Band Ceramic Capacitors (one wide band)

Postage Stamp Mica Capacitors
Postage Stamp Mica Capacitors

Standard Button Mica Capacitors
Standard Button Mica Capacitors

Polistirene Capacitors
Polistirene Capacitors

Electrolitic Tantalum Capacitors (4 colors code)
Electrolitic Tantalum Capacitors (4 colors code)

Electrolitic Tantalum Capacitors (3 colors code)
Electrolitic Tantalum Capacitors (3 colors code)

Ceramic Capacitors Class II
Ceramic Capacitors Class II

Ceramic Capacitors Class I
Ceramic Capacitors Class I

Ceramic Capacitors Pin-up
Ceramic Capacitors Pin-up


Color Code
    Type 1: Resistors [Ohm], Termistors NTC and PTC [Ohm], symmetric Varistors VDR [Ohm], Inductors (µH), Capacitors pF.
    Type 2: Capacitors pF.

  • A: first significant figure
  • B: second significant figure
  • C: third significant figure
  • D: multiplier (factor by which the significant figures are multiplied to yield the nominal value)
  • E: tolerance
  • F: When used on composition resistors indicates the established reliability failure rate level.
        On film resistors, this band is approximately 1.5 times the width of the other bands, and indicates type of terminal.
        On Capacitors indicate the working voltage.
  • G-H: temperature coefficient

    Examples:
    Resistor 6200 Ohm ±5% = A Blue, B Red, C Red, D Gold.
    Resistor 1000 Ohm ±10% = A Brown, B Black, C Red, D Silver.
Colour Colour Name Digit Multiplier
Type 1
Multiplier
Type 2
Tolerance Tolerance
under 10pF
Fail Rate Terminal
Black 0 1 1 ±20% ±2.0pF    
Brown 1 10 10 ±1% ±0.1pF 1%  
Red 2 102 102 ±2% ±0.2pF 10-1%  
Orange 3 103 103 ±3% ±0.3pF 10-2%  
Yellow 4 104 104 ±4% ±0.4pF 10-3%  
Green 5 105 105 ±5% ±0.5pF    
Blue 6 106 106        
Violet 7 107 10-3        
Gray 8 108 10-2 ±30% ±0.25pF    
White 9 109 10-1 ±10% ±1.0pF   Solder
Gold   10-1 10-1 ±5%      
Silver   10-2 10-2 ±10%      
- No color       ±20%      


Temperature Coefficient

    Type A: Radial or Ayal Lead Ceramic Capacitors (6 Dot or Band System).
    Type B: 5 Dot or Band Ceramic Capacitors (one wide band).
    Type C: Ceramic Feed Through Capacitors.
    Type D: 5 Band Ceramic Capacitors (all bands equal size).
    Type E: Ceramic Capacitors Class I-II and Pin-up.

Colour 1 Colour 2 Colour Name Temperature
Coefficient
Type A
Temperature
Coefficient
Type B
Temperature
Coefficient
Type C
Temperature
Coefficient
Type D
Temperature
Coefficient
Type E
- Black NP0 NP0 NP0 NP0 NP0
- Brown N030 N030 N030 Y5S N033
- Red N080 N080 N060 Y5T N075
- Orange N150 N150 N150 N150 N150
- Yellow N220 N220 N220 N220 N220
- Green N330 N330 N330 N330 N330
- Blue N470 N470 N470 N470 N470
- Violet N750 N750 N750 N750 N750
- Gray N750±1000 P30 P30 Y5R  
- White N330±500 P500      
- Gold     P100 Y5F  
- Silver       Y5P  
Red/Violet P100       P100
Green/Blue P030        
Orange/Orange N1500       N1500
Yellow/Orange N2200        
Green/Orange N3300        
Green/Green N4200        
Blue/Orange N4700        
Green/Black N5600        
Gray/Black N3300±2500        


Voltage Rating

    Type J: Dipped Tantalum Capacitors.
    Type K: Postage Stamp Mica capacitors.
    Type L: Polistirene capacitors.
    Type M: Electrolitic Tantalum (4 colors code).
    Type N: Electrolitic Tantalum (3 colors code).
Colour 1 Colour Name Voltage
Rating
Type J
Voltage
Rating
Type K
Voltage
Rating
Type L
Voltage
Rating
Type M
Voltage
Rating
Type N
Black 4     10 10
Brown 6 100 100 1.6  
Red 10 200 250 4 35
Orange 15 300   40  
Yellow 20 400 400 6.3 6
Green 25 500   16 15
Blue 35 600 630   20
Violet 50 700      
Gray   800   25 25
White 3 900   2.5 3
Gold   1000      
Silver   2000      
- No Color   500      


Alpha-Numeric Code
    Resistors [Ohm], Capacitors [pF]

This code use digits and one or two letters to indicate value and tolerance.
If we have two letters:

    The digits indicate the value.
    The first letter indicate the multiplier.
    The position of the first letter indicate the point position (decimal place).
    The second letter indicate the tolerance.
If we have only one letter:
    The first digits indicate the value.
    The last digit indicate the multiplier (1=10; 2=102; 3=103; …).
    The letter indicate the tolerance.
When used, the power rating is explicit indicated in Watts.
NOTE: On Ceramic Capacitors the K letter must indicate “Keramic” and not 103 multiplier.

Examples:
R21K = 0,21 Ohm ±10%
6K2J = 6,2 KOhm ±5%
2M2M = 2,2 MOhm ±20%
103J = 10 KOhm ±5%
101K = 100 Ohm ±10%
Letter Multiplier Letter Tolerance Tolerance
under 10pF
R 1 B ±0.1% ±0.1pF
K 103 C ±0.25% ±0.25pF
M 106 D ±0.5% ±0.5pF
G 109 F ±1% ±1.0pF
T 1012 G ±2% ±2.0pF
    J ±5%  
    K ±10%  
    M ±20%  
    N ±30%  

One Letter Code
    Capacitors [pF]

Letter Value [pF]
A 3.9
B 4.7
C 5.6
D 6.8
E 8.2
F 10
G 12
H 18
J 22
K 27
L 33
M 39
N 39
P 47
Q 56
R 68
S 82
T 100
U 120

 

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