Datasheet
MMU 0102, MMA 0204, MMB 0207 - Professional
www.vishay.com
Vishay Beyschlag
Revision: 09-Feb-16
13
Document Number: 28713
For technical questions, contact: melf@vishay.com
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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
The 12NC of a MMU 0102 resistor, value 47 k. and TCR 50
with ± 1 % tolerance, supplied in blister tape of 3000 units
per reel is: 2312 165 14703.
RESISTANCE DECADE LAST DIGIT
0.1 to 0.999 7
1 to 9.99 8
10 to 99.9 9
100 to 999.9 1
1 k to 9.99 k 2
10 k to 99.9 k 3
100 k to 999 k 4
1 M to 9.99 M 5
10 M to 99.9 M 6
HISTORICAL 12NC - Resistor type and packaging
DESCRIPTION
2312 ... .....
BLISTER TAPE ON REEL BULK CASE
TYPE TCR TOL.
BL
3000 UNITS
B0
10 000 UNITS
M8
8000 UNITS
MMU 0102
± 50 ppm/K
± 5 % 165 3.... 175 3.... 060 3....
± 2 % 165 2.... 175 2.... 060 2....
± 1 % 165 1.... 175 1.... 060 1....
± 0.5 % 165 5.... 175 5.... 060 5....
± 25 ppm/K
± 1 % 166 1.... 176 1.... 061 1....
± 0.5 % 166 5.... 176 5.... 061 5....
Jumper 165 90001 175 90001 060 90001
TYPE TCR TOL.
BL
3000 UNITS
B0
10 000 UNITS
M3
3000 UNITS
MMA 0204
± 50 ppm/K
± 5 % 155 3.... 145 3.... 040 3....
± 1 % 155 1.... 145 1.... 040 1....
± 0.5 % 155 5.... 145 5.... 040 5....
± 25 ppm/K
± 1 % 156 1.... 146 1.... 041 1....
± 0.5 % 156 5.... 146 5.... 041 5....
Jumper 155 90001 145 90001 040 90001
TYPE TCR TOL.
B2
2000 UNITS
B7
7000 UNITS
MMB 0207
± 100 ppm/K ± 5 % 195 3.... 185 3....
± 50 ppm/K
± 5 % 195 3.... 185 3....
± 2 % 195 2.... 185 2....
± 1 % 195 1.... 185 1....
± 25 ppm/K ± 0.5 % 196 5.... 186 5....
Jumper 195 90001 185 90001