The **CJT00-1003JB** is a specific model of a **Chassis Mount Wirewound Resistor**, typically housed in an aluminum case. These components are designed for high-power applications where heat dissipation is critical. --- ## 1. Technical Specifications Below are the primary electrical and physical characteristics for the CJT series (100W variant): | Parameter | Specification | | :--- | :--- | | **Resistance Value** | 100 $\Omega$ (indicated by "1003") | | **Power Rating** | 100 Watts | | **Tolerance** | $\pm$5% (indicated by "J") | | **Construction** | Wirewound with Aluminum Housing | | **Termination Style** | Solder Lug / Lead Wire | | **Mounting Type** | Chassis Mount (Bolted) | --- ## 2. Part Number Breakdown Understanding the nomenclature helps in identifying the exact variant: * **CJT**: The series prefix (Aluminum Housed Power Resistor). * **00**: Often a placeholder or specific physical configuration/terminal style. * **100**: The Power Rating (100 Watts). * **3**: The multiplier or specific resistance code. * **J**: Represents the Resistance Tolerance ($\pm$5%). * **B**: Packaging or internal revision code (Bulk). --- ## 3. Key Features ### Thermal Management The aluminum housing is designed to be mounted directly onto a metal chassis or a heatsink. This uses the "heat sink effect" to pull heat away from the resistive element, allowing the part to handle much higher currents than standard resistors. ### Durability * **Encapsulation:** The internal wirewound element is usually encapsulated in a high-temperature molding compound or cement. * **Environment:** The aluminum shell provides protection against mechanical vibration and harsh environmental conditions. --- ## 4. Typical Applications These resistors are commonly found in industrial and power electronics: 1. **Dynamic Braking:** Used in motor drives to dissipate energy when a motor slows down. 2. **Inrush Current Limiting:** Protecting circuits from surges when power is first applied. 3. **Load Testing:** Used as a dummy load for power supply testing. 4. **Heating Elements:** In specific low-temperature industrial heating applications. ---