| PartNumber | 8444-21A1-RK-TP | 8444-21B1-RK-TR | 8444-21B1-RK-TP |
| Description | IC & Component Sockets 44P PLCC SOCKET SMT W/LOCATION POSTS | IC & Component Sockets 44POS PLCC SOCKET | IC & Component Sockets 44P PLCC SOCKET SMT W/O LOC POSTS |
| Manufacturer | - | 3M | - |
| Product Category | - | Sockets for ICs, Transistors | - |
| Series | - | 8400 | - |
| Type | - | PLCC | - |
| Packaging | - | Digi-ReelR Alternate Packaging | - |
| Termination | - | Solder | - |
| Operating Temperature | - | -40°C ~ 105°C | - |
| Mounting Type | - | Surface Mount | - |
| Features | - | Closed Frame | - |
| Housing Material | - | Polybutylene Terephthalate (PBT), Glass Filled | - |
| Number of Positions or Pins Grid | - | 44 (4 x 11) | - |
| Pitch Mating | - | 0.050" (1.27mm) | - |
| Contact Finish Mating | - | Tin | - |
| Pitch Post | - | 0.050" (1.27mm) | - |
| Contact Finish Post | - | Tin | - |
| Contact Finish Thickness Mating | - | 160μin (4.06μm) | - |
| Contact Material Mating | - | Copper Alloy | - |
| Contact Finish Thickness Post | - | 160μin (4.06μm) | - |
| Contact Material Post | - | Copper Alloy | - |