The part number **CBF3JB56L0** refers to a specific type of electronic component, primarily used in power management and current sensing applications. ## Component Overview: Stackpole Electronics CBF Series The **CBF3JB56L0** is a **Wirewound Resistor** manufactured by Stackpole Electronics. It is part of the CBF series, which are ceramic hused, vertical-mount power resistors designed for high reliability and heat dissipation. --- ### Technical Specifications | Parameter | Specification | Description | | :--- | :--- | :--- | | **Series** | CBF | Ceramic hused, Vertical mount | | **Resistance Value** | 56 mΩ (0.056 Ω) | Low resistance for current sensing | | **Power Rating** | 3 Watts | Maximum power dissipation | | **Tolerance** | ±5% (J) | Precision level of the resistance | | **Technology** | Wirewound | High stability and surge handling | | **Mounting Type** | Through-Hole | Vertical radial leads | | **Package / Case** | Ceramic Square | Provides excellent flame resistance | --- ### Key Features and Construction 1. **Ceramic Housing:** The resistor element is encased in a ceramic rectangular body and sealed with an inorganic flameproof material. This makes it ideal for safety-critical circuits where fire prevention is mandatory. 2. **Low Resistance (L0):** The "56L0" suffix denotes 56 milliohms. This ultra-low resistance allows the part to be used as a **Shunt Resistor**, measuring current flow without dropping significant voltage. 3. **Vertical Mount:** The "JB" indicates a specific lead style (radial/vertical). This saves PCB real estate compared to standard axial-leaded horizontal resistors. 4. **Wirewound Element:** Unlike thin-film resistors, wirewound resistors use a metal wire wrapped around a core. This provides superior handling of high-energy pulses and surges. --- ### Common Applications * **Current Sensing:** Used in power supplies to monitor load current. * **Motor Controllers:** Providing feedback on motor torque and speed via current measurement. * **Battery Chargers:** Monitoring charging cycles. * **Power Inverters:** Managing high-current DC-to-AC conversion. --- ### Part Number Breakdown | Segment | Code | Meaning | | :--- | :--- | :--- | | **Series** | CBF | Ceramic hused, Vertical mount, Flameproof | | **Power** | 3 | 3 Watts power rating | | **Tolerance** | J | ±5% | | **Resistance** | 56L0 | 56 Milliohms (L used as a decimal/milli indicator) |