The **1SS400L-CC2-R** is a high-speed switching diode commonly used in consumer electronics, automotive modules, and industrial control circuits. It is designed for applications requiring high-speed signal processing and circuit protection in a compact form factor. --- ## 1. Technical Specifications The following table summarizes the key electrical characteristics of the 1SS400L-CC2-R: | Parameter | Symbol | Value | Unit | | :--- | :--- | :--- | :--- | | **Reverse Voltage (Peak)** | $V_{RM}$ | 90 | V | | **DC Reverse Voltage** | $V_R$ | 80 | V | | **Forward Current** | $I_F$ | 100 | mA | | **Peak Forward Surge Current** | $I_{FSM}$ | 500 | mA | | **Reverse Recovery Time** | $t_{rr}$ | 4.0 (max) | ns | | **Power Dissipation** | $P_D$ | 150 | mW | | **Operating Temperature** | $T_j$ | -55 to +150 | °C | --- ## 2. Key Features The device is defined by several critical performance advantages: * **Ultra-High Speed:** With a recovery time ($t_{rr}$) of only 4 nanoseconds, it can switch between "on" and "off" states extremely quickly, making it ideal for high-frequency signals. * **Low Capacitance:** Minimizes signal distortion in data transmission lines. * **Small Footprint:** Typically housed in a **SOD-523** (or similar micro-package), allowing for high-density PCB mounting. * **High Reliability:** Designed for consistent performance across a wide temperature range. --- ## 3. Pinout and Internal Logic The "CC2" in the part number often refers to the specific orientation or lead plating. In a standard SOD-523 package, the component is a two-terminal device: ```text +-------[Cathode Bar]-------+ | | (1) [K] --------|<--------- [A] (2) | Diode | +---------------------------+ ``` * **Terminal 1 (Cathode):** Marked by a polarity band. * **Terminal 2 (Anode):** The positive entry point for current. --- ## 4. Common Applications The 1SS400L-CC2-R is found in the following scenarios: 1. **General Purpose Switching:** Turning circuits on/off at high speeds. 2. **Signal Conditioning:** Clipping or clamping voltage spikes to protect sensitive ICs. 3. **Reverse Polarity Protection:** Preventing damage if batteries or power supplies are connected incorrectly (for low-current paths). 4. **Mobile Devices:** Due to its miniature size, it is frequently used in smartphones and tablets.