MBA/SMA 0204, MBB/SMA 0207, MBE/SMA 0414 - Precision
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Vishay Beyschlag
Revision: 12-Feb-16
9
Document Number: 28767
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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 resistance decade table shown below
Resistance Decade
Historical 12NC Example
The 12NC code of a MBA 0204 resistor, value 47 k and
TCR 25 with ± 0.1 % tolerance, supplied on bandolier in a
box of 5000 units was: 2312 906 74703.
RESISTANCE DECADE LAST DIGIT
10 to99.9 9
100 to999 1
1 k to 9.99 k 2
10 k to99.9 k 3
100k to999 k 4
1M to9.99 M 5
HISTORICAL 12NC - Resistor type and packaging
DESCRIPTION
2312 ... ..... (BANDOLIER)
AMMOPACK REEL
TYPE TCR TOL. C1 1000 UNITS CT 5000 UNITS R1 1000 UNITS R2 2500 UNITS RP 5000 UNITS
MBA 0204
± 25 ppm/K
± 0.25 % 901 6.... 906 6.... 701 6.... - 806 6....
± 0.1 % 901 7.... 906 7.... 701 7.... - 806 7....
± 15 ppm/K
± 0.25 % 902 6.... 907 6.... 702 6.... - 807 6....
± 0.1 % 902 7.... 907 7.... 702 7.... - 807 7....
MBB 0207
± 25 ppm/K
± 0.25 % 911 6.... 916 6.... 711 6.... - 816 6....
± 0.1 % 911 7.... 916 7.... 711 7.... - 816 7....
± 15 ppm/K
± 0.25 % 912 6.... 917 6.... 712 6.... - 817 6....
± 0.1 % 912 7.... 917 7.... 712 7.... - 817 7....
MBE 0414
± 25 ppm/K
± 0.25 % 921 6.... - - 826 6.... -
± 0.1 % 921 7.... - - 826 7.... -
± 15 ppm/K
± 0.25 % 922 6.... - - 827 6.... -
± 0.1 % 922 7.... - - 827 7.... -