## PRCP-RHT1300: Electronic Specifications and Technical Details The **PRCP-RHT1300** is a high-temperature Resettable Fuse, specifically a **Polymeric Positive Temperature Coefficient (PPTC)** device. It is designed to protect electronic circuits from overcurrent and overtemperature conditions. --- ### 1. Key Technical Specifications The following table outlines the critical electrical parameters for the PRCP-RHT1300: | Parameter | Specification | Description | | :--- | :--- | :--- | | **$I_{hold}$** | 13.0 Amperes | Maximum current at which the device will not trip (at 23°C). | | **$I_{trip}$** | 22.1 Amperes | Minimum current at which the device is guaranteed to trip. | | **$V_{max}$** | 16 Volts | Maximum voltage the device can withstand without damage. | | **$I_{max}$** | 100 Amperes | Maximum fault current the device can safely interrupt. | | **$P_d$** | 9.8 Watts | Typical power dissipated from the device when in a tripped state. | | **$R_{min}$** | 0.0050 Ohms | Minimum resistance of the device (pre-trip). | | **$R_{max}$** | 0.0110 Ohms | Maximum resistance of the device (pre-trip). | --- ### 2. Operating Principles The PRCP-RHT1300 functions as a non-linear thermistor: 1. **Normal Operation:** The conductive polymer matrix is in a crystalline state, allowing electrons to flow easily through carbon chains (low resistance). 2. **Fault Condition:** When an overcurrent occurs, $I^2R$ heating causes the polymer temperature to rise. Upon reaching the "Trip" temperature, the polymer expands and shifts to an amorphous state. 3. **Tripped State:** The expansion breaks the carbon chains, causing the resistance to increase exponentially. This limits the current to a safe leakage level. 4. **Resetting:** Once the fault is removed and the power is cycled, the device cools down, contracts, and returns to a low-resistance state. --- ### 3. Thermal Derating Since this is an **"RHT" (High Temperature)** series device, it is specifically engineered for harsh environments like automotive under-the-hood applications. * **Operating Temperature Range:** -40°C to +125°C. * **Derating Factor:** As ambient temperature increases, the $I_{hold}$ value decreases. For example, at 85°C, the hold current will be significantly lower than the rated 13.0A. --- ### 4. Physical and Material Properties * **Lead Type:** Radial Leaded (Through-hole). * **Material:** Cured, flame-retardant epoxy polymer (meeting UL 94V-0 requirements). * **Agency Recognition:** Generally UL, CSA, and TUV approved for safety standards. ---