| Part Number | 72R020XU | 72R030XU |
|---|---|---|
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. |
| Category | PTC Resettable Fuses | PTC Resettable Fuses |
|
|
|
| Product Status | Obsolete | Obsolete |
| Type | Polymeric | Polymeric |
| Voltage - Max | 72V | 72V |
| Current - Max | 40 A | 40 A |
| Current - Hold (Ih) (Max) | 200 mA | 300 mA |
| Current - Trip (It) | 400 mA | 600 mA |
| Time to Trip | 2.2 s | 3 s |
| Resistance - Initial (Ri) (Min) | 1.83 Ohms | 880 mOhms |
| Resistance - Post Trip (R1) (Max) | 4.4 Ohms | 2.1 Ohms |
| 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 | 0.291" Dia x 0.122" T (7.40mm x 3.10mm) | 0.291" Dia x 0.122" T (7.40mm x 3.10mm) |
| Height - Seated (Max) | 0.461" (11.70mm) | 0.500" (12.70mm) |
| Thickness (Max) | - | - |
| Lead Spacing | 0.201" (5.10mm) | 0.201" (5.10mm) |