The **1N6660** is a high-reliability, high-speed **Schottky Power Rectifier Diode**. It is primarily designed for use in military, aerospace, and high-end industrial applications where efficiency and radiation tolerance are critical. --- ### ## Technical Specifications The following table summarizes the key electrical characteristics of the 1N6660: | Parameter | Symbol | Value | | :--- | :--- | :--- | | **Peak Repetitive Reverse Voltage** | $V_{RRM}$ | 45 V | | **Average Rectified Forward Current** | $I_{O}$ | 30 A | | **Peak Forward Surge Current** | $I_{FSM}$ | 600 A | | **Maximum Forward Voltage Drop** | $V_{F}$ | ~0.70 V (at 30A) | | **Operating Temperature Range** | $T_{j}$ | -65°C to +150°C | | **Case Style** | Package | TO-254 (Hermetic) | --- ### ### Key Features and Construction 1. **Schottky Barrier Technology:** Unlike standard PN junction diodes, the 1N6660 uses a metal-to-silicon barrier. This results in a very low forward voltage drop and extremely fast switching speeds because there is no minority carrier recovery time. 2. **Hermetic Packaging:** It is typically housed in a **TO-254** package. This is a metal, glass-to-metal sealed package that ensures the internal components are protected from moisture and atmospheric contaminants. 3. **Low Thermal Resistance:** The package is designed for mounting on a heatsink, allowing it to dissipate heat efficiently while carrying high currents (30A). 4. **Common Cathode/Anode Configurations:** It is often available in dual-diode configurations (e.g., 1N6660CCT) within the same package for use in center-tap rectification. --- ### ### Typical Applications The 1N6660 is utilized in circuits where power loss must be minimized and frequency is high: * **Switching Power Supplies (SMPS):** Used as output rectifiers for DC-DC converters. * **Low Voltage Rectification:** Ideal for 5V or 12V power rails due to the low $V_F$. * **Freewheeling Diodes:** Used in motor control circuits to protect against inductive spikes. * **Satellite & Aerospace:** Selected for its ability to withstand harsh environments and its reliability ratings (JAN, JANTX, JANTXV levels). --- ### ### Comparison with Standard Diodes | Feature | Standard Rectifier (e.g., 1N5408) | 1N6660 (Schottky) | | :--- | :--- | :--- | | **Switching Speed** | Slow (ms/μs) | Ultra-Fast (ns) | | **Voltage Drop** | High (~1.1V) | Low (~0.7V) | | **Reverse Leakage** | Very Low | Higher | | **Voltage Rating** | High (up to 1000V+) | Lower (usually <100V) |