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| Part Number | RUSB155 | RUSBF155 | RUSB185 | RUSB135 |
|---|---|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. |
| Product Status | Obsolete | Active | Obsolete | Obsolete |
| Type | Polymeric | Polymeric | Polymeric | Polymeric |
| Voltage - Max | 6V | 6V | 16V | 16V |
| Current - Max | 40 A | 40 A | 40 A | 40 A |
| Current - Hold (Ih) (Max) | 1.55 A | 1.55 A | 1.85 A | 1.35 A |
| Current - Trip (It) | 2.65 A | 2.65 A | 3.7 A | 2.7 A |
| Time to Trip | 2.2 s | 2.2 s | 10 s | 4.5 s |
| Resistance - Initial (Ri) (Min) | 40 mOhms | 40 mOhms | 30 mOhms | 40 mOhms |
| Resistance - Post Trip (R1) (Max) | 100 mOhms | 100 mOhms | 90 mOhms | 115 mOhms |
| Resistance - 25°C (Typ) | - | - | - | - |
| Operating Temperature | - | -40°C ~ 85°C | - | - |
| Ratings | - | - | - | - |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole |
| Package / Case | Radial, Disc | Radial, Disc | Radial, Disc | Radial, Disc |
| Size / Dimension | 0.272" Dia x 0.122" T (6.90mm x 3.10mm) | 0.272" Dia x 0.122" T (6.90mm x 3.10mm) | 0.402" L x 0.118" W (10.20mm x 3.00mm) | 0.350" L x 0.118" W (8.90mm x 3.00mm) |
| Height - Seated (Max) | 0.461" (11.70mm) | 0.461" (11.70mm) | 0.618" (15.70mm) | 0.532" (13.50mm) |
| Thickness (Max) | - | - | - | - |
| Lead Spacing | 0.201" (5.10mm) | 0.201" (5.10mm) | 0.199" (5.05mm) | 0.199" (5.05mm) |
