www.vishay.com

Document Number: 28759

100

Revision: 01-Dec-09

CMA 0204 HF

Vishay Beyschlag

Pulse Load Carbon Film MELF Resistors for

High Frequency Applications

HISTORICAL 12NC INFORMATION

• The resistors had a 12-digit numeric code starting with

2312.

• The subsequent 4 digits indicated the resistor type,

specification and packaging; see the 12NC table.

• The remaining 4 digits indicated the resistance value:

- The first 3 digits indicated the resistance value.

- The last digit indicated the resistance decade in

accordance with the 12NC Indicating Resistance

Decade table.

Last Digit of 12NC Indicating Resistance Decade

Historical 12NC Example

The 12NC of a CMA 0204 HF resistor, value 50

 with ± 1 %

tolerance, supplied in blister tape of 3000 units per reel was:

2312 158 25009.

RESISTANCE DECADE

LAST DIGIT

10

 to 99.9

9

100

 to 999 

1

HISTORICAL 12NC - Resistor Type and Packaging

DESCRIPTION

CODE 2312 ... .....

BLISTER TAPE ON REEL

TYPE

TOL.

BL

3000 UNITS

CMA 0204 HF

± 2 %

158 2....