The **CB3JB3K32** is a specific model of power resistor manufactured by **Stackpole Electronics**. This component belongs to the CB series, which are ceramic-housed, wirewound, or metal oxide resistors designed for high-power applications. ### 1. Part Number Breakdown To understand the electronic characteristics, we can decode the part number according to the manufacturer's standards: | Part Segment | Meaning | Specification | | :--- | :--- | :--- | | **CB** | Series Type | Ceramic hosing (Cement Resistor) | | **3** | Power Rating | 3 Watts | | **JB** | Tolerance | ± 5% (Standard for this series) | | **3K32** | Resistance Value | 3.32 kΩ (3,320 Ohms) | --- ### 2. Technical Specifications Below are the primary technical parameters for the CB3JB3K32: | Parameter | Specification | | :--- | :--- | | **Resistance** | 3.32 kΩ | | **Power Rating** | 3 Watts at 70°C | | **Tolerance** | ± 5% | | **Temperature Coefficient** | ± 300 ppm/°C | | **Operating Temperature** | -55°C to +275°C | | **Dielectric Strength** | 1,000V AC | | **Construction** | Wirewound or Metal Oxide core in a Ceramic case | --- ### 3. Key Features and Physical Construction * **Ceramic Housing:** The internal resistive element is encased in a rectangular ceramic (cement) body. This provides excellent flame resistance and high insulation. * **Heat Dissipation:** These are "Power Resistors," meaning they are built to handle significant heat. They are often mounted slightly off the PCB to allow for airflow. * **Inorganic Materials:** The materials used are non-flammable, making them safe for fail-safe circuits. * **Mounting:** It is a **Through-Hole** component with axial leads. ### 4. Common Applications Due to its 3W power rating and 3.32 kΩ resistance, this part is typically used in: * **Power Supplies:** As a bleeder resistor to discharge capacitors. * **Voltage Dropping:** Reducing voltage for specific sub-circuits. * **Industrial Equipment:** Used in motor controllers or heavy-duty power regulation. * **Automotive Electronics:** Basic circuit protection and current limiting. ---