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| Part Number | 72R135XF | 72R185XF |
|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. |
| Product Status | Active | Obsolete |
| Type | Polymeric | Polymeric |
| Voltage - Max | 72V | 72V |
| Current - Max | 40 A | 40 A |
| Current - Hold (Ih) (Max) | 1.35 A | 1.85 A |
| Current - Trip (It) | 2.7 A | 3.7 A |
| Time to Trip | 9.6 s | 12.6 s |
| Resistance - Initial (Ri) (Min) | 120 mOhms | 80 mOhms |
| Resistance - Post Trip (R1) (Max) | 300 mOhms | 190 mOhms |
| Resistance - 25°C (Typ) | - | - |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Ratings | - | - |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | Radial, Disc | Radial, Disc |
| Size / Dimension | 0.535" Dia x 0.122" T (13.58mm x 3.10mm) | 0.660" Dia x 0.122" T (16.76mm x 3.10mm) |
| Height - Seated (Max) | 0.780" (19.80mm) | 0.906" (23.00mm) |
| Thickness (Max) | - | - |
| Lead Spacing | 0.201" (5.10mm) | 0.201" (5.10mm) |
