MBA/SMA 0204, MBB/SMA 0207, MBE/SMA 0414 - Professional
Professional Thin Film Leaded Resistors
Vishay Beyschlag
HISTORICAL 12NC INFORMATION
Resistance Decade
? 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
RESISTANCE DECADE
0.1 ?? to 0.999 ?
1 ?? to 9.99 ?
10 ?? to 99.9 ?
100 ?? to 999 ?
1 k ? to 9.99 k ?
10 k ? to 99.9 k ?
100 k ? to 999 k ?
1 M ? to 9.99 M ?
10 M ? to 99.9 M ?
LAST DIGIT
7
8
9
1
2
3
4
5
6
Historical 12NC Example
The 12NC code of a MBA 0204 resistor, value 47.5 k ? and
TCR 50 with ± 1 % tolerance, supplied on bandolier in a box
of 5000 units was: 2312 905 14753.
HISTORICAL 12NC - Resistor type and packaging
2312 ... .....
DESCRIPTION
AMMOPACK
REEL
TYPE
MBA 0204
MBB 0207
TCR
± 50 ppm/K
± 25 ppm/K
Jumper
± 50 ppm/K
± 25 ppm/K
Jumper
TOL.
±5%
±1%
± 0.5 %
±1%
± 0.5 %
-
±5%
±1%
± 0.5 %
±1%
± 0.5 %
-
±5%
C1 1000 units
900 3....
900 1....
900 5....
901 1....
901 5....
900 90001
910 3....
910 1....
910 5....
911 1....
911 5....
910 90001
920 3....
CT 5000 units
905 3....
905 1....
905 5....
906 1....
906 5....
905 90001
915 3....
915 1....
915 5....
916 1....
916 5....
915 90001
-
R1 1000 units
700 3....
700 1....
700 5....
701 1....
701 5....
700 90001
710 3....
710 1....
710 5....
711 1....
711 5....
710 90001
-
R2 2500 units
-
-
-
-
-
-
-
-
-
-
-
-
825 3....
RP 5000 units
805 3....
805 1....
805 5....
806 1....
806 5....
805 90001
815 3....
815 1....
815 5....
816 1....
816 5....
815 90001
-
MBE 0414
± 50 ppm/K
± 25 ppm/K
±1%
± 0.5 %
±1%
± 0.5 %
920 1....
920 5....
921 1....
921 5....
-
-
-
-
-
-
-
-
825 1....
825 5....
826 1....
826 5....
-
-
-
-
Document Number: 28766
Revision: 03-Dec-12
For technical questions, contact: filmresistorsleaded@vishay.com
www.vishay.com
33
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT\rARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
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