| No. | Part Number | Pin Count | Pitch | Socket Dimensions | IC Dimensions | ||
| A | B | C | D | ||||
| 1 | IC51-1004-827 | 100 | 0.635 | 47.5 | 34 | 22.86 | 22.35 |
| 2 | IC51-1324-828 | 132 | 0.635 | 53.5 | 40 | 27.94 | 27.43 |
| 3 | IC51-1644-829 | 164 | 0.635 | 58 | 44 | 32.02 | 23.51 |
| 4 | IC51-1964-1300 | 196 | 0.635 | 64 | 49 | 38.1 | 37.59 |

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