The B59751B0120A070 is a PTC (Positive Temperature Coefficient) thermistor manufactured by EPCOS/TDK. This component is primarily used for overcurrent protection in electronic circuits, as it limits excessive current by rapidly increasing resistance when a certain temperature threshold is reached. Here are the main technical specifications and attributes:

Key Specifications:

1. Type: Ceramic PTC Thermistor
2. Resistance at 25°C (R25): Approximately 120Ω
3. Maximum Voltage: 420V AC
4. Current Rating (Holding Current Ih): Typically designed for moderate to low current
5. Temperature Range: -40°C to +85°C, providing stable performance across a wide temperature range.
6. Package: Radial leaded, disc shape for through-hole mounting
7. Functionality: Resettable overcurrent protection fuse

Applications:

• Overcurrent Protection: Prevents damage in circuits by limiting excessive current flow.
• Short Circuit Protection: Ensures protection in systems vulnerable to short circuits.
• Automotive and Consumer Electronics: Used in power supplies, chargers, and other sensitive devices where overcurrent protection is essential.

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