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| Part Number | 8444-11B1-RK-TP | 8444-21B1-RK-TP | 8444-21B1-RK-TR | 8444-21A1-RK-TP |
| Manufacturer | 3M | 3M | 3M | 3M |
| Series | 8400 | 8400 | 8400 | 8400 |
| Packaging | Tube | Tube | Tape & Reel (TR) | Tube |
| Product Status | Active | Active | Active | Active |
| Type | PLCC | PLCC | PLCC | PLCC |
| Number of Positions or Pins (Grid) | 44 (4 x 11) | 44 (4 x 11) | 44 (4 x 11) | 44 (4 x 11) |
| Pitch - Mating | 0.050" (1.27mm) | 0.050" (1.27mm) | 0.050" (1.27mm) | 0.050" (1.27mm) |
| Contact Finish - Mating | Tin | Tin | Tin | Tin |
| Contact Finish Thickness - Mating | 160.0µin (4.06µm) | 160.0µin (4.06µm) | 160.0µin (4.06µm) | 160.0µin (4.06µm) |
| Contact Material - Mating | Copper Alloy | Copper Alloy | Copper Alloy | Copper Alloy |
| Mounting Type | Through Hole | Surface Mount | Surface Mount | Surface Mount |
| Features | Closed Frame | Closed Frame | Closed Frame | Closed Frame |
| Termination | Solder | Solder | Solder | Solder |
| Pitch - Post | 0.100" (2.54mm) | 0.050" (1.27mm) | 0.050" (1.27mm) | 0.050" (1.27mm) |
| Contact Finish - Post | Tin | Tin | Tin | Tin |
| Contact Finish Thickness - Post | 160.0µin (4.06µm) | 160.0µin (4.06µm) | 160.0µin (4.06µm) | 160.0µin (4.06µm) |
| Contact Material - Post | Copper Alloy | Copper Alloy | Copper Alloy | Copper Alloy |
| Housing Material | Polybutylene Terephthalate (PBT), Glass Filled | Polybutylene Terephthalate (PBT), Glass Filled | Polybutylene Terephthalate (PBT), Glass Filled | Polybutylene Terephthalate (PBT), Glass Filled |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C | -40°C ~ 105°C | -40°C ~ 105°C |
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