The **HSMBJSAC26** belongs to the **SAC** (Low Capacitance) series of Transient Voltage Suppression (TVS) diodes, specifically designed to protect sensitive components from high-voltage transients and Electrostatic Discharge (ESD). --- ## 1. Core Technical Specifications The part number "26" typically refers to its working standoff voltage. Below are the key electrical characteristics: | Parameter | Value (Typical) | | :--- | :--- | | **Working Peak Reverse Voltage ($V_{RWM}$)** | 26.0 Volts | | **Minimum Breakdown Voltage ($V_{BR}$)** | 28.9 Volts | | **Maximum Clamping Voltage ($V_C$)** | 42.1 Volts | | **Peak Pulse Power ($P_{PP}$)** | 500 Watts (10/1000μs waveform) | | **Package Type** | DO-214AA (SMB) | | **Capacitance** | Low (typically < 50pF) | --- ## 2. Key Features * **Low Capacitance:** Unlike standard TVS diodes, the SAC series is engineered for lower junction capacitance. This makes it suitable for high-speed data lines where signal integrity is a concern. * **Fast Response Time:** Provides near-instantaneous clamping (typically less than 1.0 picosecond from 0 Volts to $V_{BR}$). * **Surface Mount Design:** The SMB (DO-214AA) package is optimized for automated assembly and low profile requirements. * **High Surge Capability:** Despite its small size, it can handle significant peak pulse currents ($I_{PP}$). --- ## 3. Typical Applications The HSMBJSAC26 is commonly used in circuits where overvoltage protection is needed without distorting the underlying data signal: 1. **Communication Lines:** Protection for RS-232, RS-422, and RS-485 interfaces. 2. **Power Supply Protection:** Clamping inductive spikes in DC power lines. 3. **Industrial Controls:** Safeguarding PLC inputs and sensors from industrial noise. 4. **Consumer Electronics:** General ESD protection for ports and connectors. --- ## 4. Part Number Breakdown The nomenclature for this series generally follows this structure: | Prefix/Code | Meaning | | :--- | :--- | | **H** | High reliability or specific manufacturer prefix | | **SMBJ** | Package type (SMB) and 600W/500W power class | | **SAC** | Low capacitance series identifier | | **26** | Reverse Standoff Voltage (26V) |