Title
IBM circuit boardCatalog Number
102728702Type
Physical objectDescription
This is an IBM circuit board with two 12x2 row female connectors on the bottom. The components are a mixture of discrete and integrated circuits and one power transistor with a heat sink. There are three wire jumpers on the solder side.Manufacturer
IBMIdentifying Numbers
| Other number | 24.28981 | Scratched into left side connector on component side |
| Other number | 2499820 | Scratched into right side connector on component side |
| Other number | 276 | Scratched into left side connector on component side |
| Other number | 7820 | Scratched into left side connector on component side |
| Other number | A5.627.YW | Scratched into right side connector on component side |
| Other number | B 2499820-01 | Etched vertically on bottom left edge on solder side |
| Other number | B 2499823-00 | Etchedon solder side |
| Other number | M535 | Melted into back of both connectors |
| Other number | YBF2499819-01 | Etched vertically on bottom left edge on component side |
| Other number | YBF2499823-00 | Etched vertically on top right edge on component side |
Dimensions
overall: 4 1/2 in x 3 1/2 in x 3/4 inCategory
Component/circuit board
