Product Overview
The 1206L025YR is a PTC resettable fuse (polyfuse) from Littelfuse, designed for overcurrent protection in electronic circuits. With a hold current of 0.25A and a trip current of 0.50A in a 1206 surface mount package, this PPTC (Polymeric Positive Temperature Coefficient) device provides resettable overcurrent protection that automatically recovers when the fault condition is removed, eliminating the need for fuse replacement.
Key Specifications
| Parameter | Value |
| Manufacturer | Littelfuse |
| Type | PPTC Resettable Fuse (Polymeric PTC) |
| Hold Current (I_H) | 0.25A (250mA) |
| Trip Current (I_T) | 0.50A (500mA) |
| Voltage Rating (V_max) | 30V |
| Maximum Current (I_max) | 40A |
| Power Dissipation | 0.8W (typ at trip) |
| Resistance (R_min) | 0.20Ω (initial) |
| Resistance (R_max) | 0.60Ω (post-trip) |
| Package / Case | 1206 (3216 Metric) 3.2 x 1.6mm |
| Operating Temperature | -40°C to +85°C |
Features
- Resettable overcurrent protection – no replacement needed
- Fast response time to overcurrent conditions
- Low profile surface mount package
- RoHS compliant and halogen-free
- UL, CSA, and TUV recognized
- Low initial resistance
- Wide operating temperature range
- Compact 1206 footprint
- Suitable for reflow soldering
Applications
- USB port and peripheral protection
- Portable electronics and mobile devices
- Computer peripherals and accessories
- Battery-powered devices and chargers
- Industrial control and instrumentation
- Automotive electronics
- Consumer electronics and appliances