### BAS416: Low Leakage Diode Overview The **BAS416** is a high-performance switching diode specifically designed for applications where minimal current loss (leakage) is critical. It is commonly housed in the ultra-small SOD-323 plastic package. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the BAS416 diode: | Parameter | Symbol | Maximum Value | Unit | | :--- | :--- | :--- | :--- | | Continuous Reverse Voltage | $V_R$ | 75 | V | | Repetitive Peak Reverse Voltage | $V_{RRM}$ | 85 | V | | Continuous Forward Current | $I_F$ | 200 | mA | | Repetitive Peak Forward Current | $I_{FRM}$ | 500 | mA | | Reverse Leakage Current ($V_R = 75V$) | $I_R$ | 5 | nA | | Diode Capacitance ($V_R = 0, f = 1MHz$) | $C_d$ | 2 | pF | --- ### 2. Major Features * **Ultra-Low Leakage Current:** The standout feature is its extremely low reverse leakage (typically 3 pA to 5 nA), which prevents battery drain or signal interference in high-impedance circuits. * **Compact Footprint:** The **SOD-323** package is ideal for space-constrained surface-mount designs. * **Fast Switching:** While optimized for low leakage, it maintains a relatively fast reverse recovery time ($t_{rr} \approx 3\mu s$). * **High Reliability:** Built using planar technology for stable performance over temperature. --- ### 3. Common Applications Due to its unique characteristics, the BAS416 is typically found in: 1. **Low Current Rectification:** Used in sensors or battery-powered devices where power conservation is vital. 2. **Signal Conditioning:** Protecting high-impedance inputs in Op-Amp circuits. 3. **Voltage Clamping:** Preventing voltage spikes in precision analog-to-digital converter (ADC) inputs. 4. **Reverse Polarity Protection:** For low-power handheld electronics. --- ### 4. Circuit Symbol and Pinout ```text Cathode (K) Anode (A) [ | ]-------------------[>] (Bar Side) ``` * **Pin 1 (Cathode):** Indicated by a band on the plastic body. * **Pin 2 (Anode):** The opposite lead. ---