The **BAS70C-AE3-R** is a Surface Mount Device (SMD) small signal Schottky barrier diode. It is widely used in high-speed switching and low-voltage applications due to its low forward voltage drop and fast recovery time. --- ## 1. Technical Specifications Below are the primary electrical characteristics and physical parameters: | Parameter | Specification | | :--- | :--- | | **Configuration** | Dual Diode, Common Cathode | | **Package Type** | SOT-23 | | **Peak Reverse Voltage ($V_{RRM}$)** | 70 V | | **Continuous Forward Current ($I_F$)** | 70 mA | | **Forward Voltage Drop ($V_F$)** | Max 1.0V @ 15mA (Typ 410mV @ 1mA) | | **Reverse Recovery Time ($t_{rr}$)** | < 5 ns | | **Operating Temperature** | -55°C to +150°C | --- ## 2. Key Features & Internal Logic The "C" in the part number typically denotes the internal configuration. For the BAS70C: * **Common Cathode:** Pins 1 and 2 are the individual Anodes, and Pin 3 is the shared Cathode. * **Schottky Technology:** Unlike standard PN junction diodes, Schottky diodes use a metal-semiconductor junction, allowing for: * Faster switching speeds. * Lower power dissipation. * Minimal stored charge. --- ## 3. Pinout Configuration (SOT-23) The SOT-23 package has three leads, arranged as follows: ```text [ Pin 3 ] <-- Common Cathode | | +----|---|----+ | | | | | [1] [2] | +-------------+ ^ ^ Anode 1 Anode 2 ``` --- ## 4. Typical Applications * **Signal Clamping:** Protecting sensitive IC inputs from overvoltage. * **High-Speed Switching:** Used in digital logic circuits where fast transitions are required. * **Mixers and Detectors:** Utilized in RF circuits for signal demodulation. * **Reverse Polarity Protection:** Small-scale protection for low-current sensor lines.