The **SES-2HB-R/Q** refers to a specific series of high-performance **Silicon Epitaxial Schottky Barrier Diodes**, typically manufactured by companies like Sanken or utilized in power management circuits. These components are designed for high-frequency rectification and switching applications. --- ### ## Technical Specifications Below is a summary of the core electronic characteristics typical for this component series: | Parameter | Characteristic | Description | | :--- | :--- | :--- | | **Component Type** | Schottky Barrier Diode | High-speed switching diode. | | **Configuration** | Single or Dual (R/Q variants) | Usually available in a compact surface-mount package. | | **Repetitive Peak Reverse Voltage ($V_{RM}$)** | 20V - 60V (Series dependent) | The maximum voltage the diode can withstand in reverse bias. | | **Average Forward Current ($I_{F(AV)}$)** | 1.0A - 2.0A | The maximum continuous current allowed. | | **Forward Voltage Drop ($V_F$)** | ~0.45V - 0.55V | Low voltage drop for increased efficiency. | | **Reverse Recovery Time ($t_{rr}$)** | Nanoseconds (ns) | Extremely fast switching speed. | --- ### ### Key Electronic Features 1. **Low Forward Voltage Drop ($V_F$):** Unlike standard silicon diodes (0.7V), the Schottky construction allows for a lower voltage drop. This reduces power dissipation (heat) and improves the efficiency of power supplies. 2. **High-Speed Switching:** Because Schottky diodes are unipolar devices (only majority carriers), they have negligible reverse recovery time. This makes them ideal for high-frequency DC-DC converters. 3. **Guard Ring Structure:** The "HB" designation often implies a specific internal guard ring for transient protection, helping the device handle high $dv/dt$ and providing better reliability against over-voltage stress. --- ### ### Typical Application Circuit These parts are commonly found in the following electronic environments: * **Switching Power Supplies (SMPS):** Used in the output rectification stage. * **DC-DC Converters:** Act as "freewheeling" diodes in buck or boost regulators. * **Reverse Polarity Protection:** Protecting sensitive logic circuits from battery reversal. * **Mobile Electronics:** Due to the small footprint and high efficiency. --- ### ### Package Layout Example Most SES series diodes use a small-outline package (like SOD-123 or SOT-23). Below is a conceptual representation of the pinout for a "Q" (Common Cathode) variant: ```text [Cathode] | +-----+-----+ | | | [Anode 1] [Anode 2] ```