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| Part Number | MICROSMD400LR-2 | MICROSMD500LR-2 | MICROSMD450LR-2 | MICROSMD600LR-2 | MICROSMD200LR-2 |
|---|---|---|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Type | Polymeric | Polymeric | Polymeric | Polymeric | Polymeric |
| Voltage - Max | 6V | 6V | 5V | 6V | 6V |
| Current - Max | 50 A | 50 A | 50 A | 50 A | 50 A |
| Current - Hold (Ih) (Max) | 4 A | 5 A | 4.5 A | 6 A | 2 A |
| Current - Trip (It) | 9 A | 10 A | 9 A | 12 A | 5 A |
| Time to Trip | 10 s | 2 s | 2 s | 2 s | 4 s |
| Resistance - Initial (Ri) (Min) | 2.5 mOhms | 2 MOhms | 2 MOhms | 2 MOhms | 6 mOhms |
| Resistance - Post Trip (R1) (Max) | 9.9 mOhms | 7 mOhms | 8 mOhms | 6.3 mOhms | - |
| Resistance - 25°C (Typ) | - | - | - | - | - |
| Operating Temperature | -40°C ~ 80°C | -40°C ~ 80°C | -40°C ~ 80°C | -40°C ~ 80°C | - |
| Ratings | - | - | - | - | - |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 1210 (3225 Metric) | 1210 (3225 Metric), Concave | 1210 (3225 Metric), Concave | 1210 (3225 Metric), Concave | 1210 (3225 Metric), Concave |
| Size / Dimension | 0.127" L x 0.102" W (3.22mm x 2.58mm) | 0.127" L x 0.102" W (3.22mm x 2.58mm) | 0.127" L x 0.102" W (3.22mm x 2.58mm) | 0.127" L x 0.102" W (3.22mm x 2.58mm) | 0.127" L x 0.102" W (3.22mm x 2.58mm) |
| Height - Seated (Max) | - | - | - | - | - |
| Thickness (Max) | 0.039" (1.00mm) | 0.039" (1.00mm) | 0.039" (1.00mm) | 0.039" (1.00mm) | 0.039" (1.00mm) |
| Lead Spacing | - | - | - | - | - |
