MMU 0102 HF, MMA 0204 HF, MMB 0207 HF

www.vishay.com

Vishay Beyschlag

Revision: 26-Oct-15

10

Document Number: 28718

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

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 MMU 0102 HF resistor, value 50

 and

TCR 50 with ± 2 % tolerance, supplied in blister tape of

3000 units per reel was: 2312 168 0500 9.

RESISTANCE DECADE

LAST DIGIT

1

 to 9.99 

8

10

 to 99.9 

9

100

 to 999 

1

HISTORICAL 12NC - Resistor type and packaging

DESCRIPTION

2312 ... .....

BLISTER TAPE ON REEL

BULK CASE

TYPE

TCR

TOL.

B1

1000 UNITS

B2

2000 UNITS

BL

3000 UNITS

B7

7000 UNITS

B0

10000

UNITS

M3

3000 UNITS

M8

8000 UNITS

MMU 0102 HF ± 50 ppm/K ± 2 %

173 0....

-

168 0....

-

178 0....

-

063 0....

MMA 0204 HF ± 50 ppm/K ± 1 %

143 0....

-

158 0....

-

148 0....

043 0....

-

MMB 0207 HF ± 50 ppm/K ± 2 %

183 0....

198 0....

-

188 0....

-

-

-