The **216-R** series typically refers to a specific line of **Surface Mount Device (SMD) discrete semiconductors**, most commonly associated with **Schottky Barrier Diodes** produced by manufacturers like *Comchip Technology* or as part of specific power management chipsets (often found in laptop motherboards). Below is a detailed breakdown of the electronic specifications and characteristics of the 216-R series components. --- ### 1. General Specifications In most contexts, the "216-R" (such as the CDBB216-R) refers to a High-Efficiency Schottky Rectifier. | Parameter | Value (Typical) | Unit | | :--- | :--- | :--- | | **Type** | Schottky Barrier Diode | - | | **Maximum Forward Current ($I_F$)** | 2.0 | Amperes | | **Peak Reverse Voltage ($V_{RRM}$)** | 160 | Volts | | **Forward Voltage Drop ($V_F$)** | ~0.90 | Volts | | **Operating Temperature** | -55 to +150 | °C | | **Package Type** | SMB / DO-214AA | - | --- ### 2. Key Features * **Low Forward Voltage:** Reduces power loss and increases efficiency in power supply circuits. * **High Surge Capability:** Designed to handle momentary spikes in current without failing. * **Fast Switching:** Schottky technology allows for extremely high-speed switching, making it ideal for high-frequency inverters. * **Guard Ring Construction:** Provides transient protection and reduces leakage current. --- ### 3. Common Applications These parts are integral to modern power electronics. Common use cases include: 1. **Switching Power Supplies (SMPS):** Used for rectification on the output stage. 2. **DC-DC Converters:** Acts as a freewheeling diode to maintain current flow when switches are off. 3. **Reverse Polarity Protection:** Prevents damage to a circuit if a battery or power source is connected backwards. 4. **Laptop Motherboards:** Often found in the power rail management section (charging circuits). --- ### 4. Comparison Table: 216-R vs. Standard Diodes | Feature | 216-R (Schottky) | Standard Silicon (1N4007) | | :--- | :--- | :--- | | **Switching Speed** | Ultra-Fast | Slow | | **Voltage Drop** | Low (0.4V - 0.9V) | High (1.1V) | | **Efficiency** | High | Moderate | | **Reverse Leakage** | Higher at high temps | Very Low | --- ### 5. Identification and Marking * **Marking Code:** On the physical component, you will often see "216" or a manufacturer-specific code followed by a date code. * **Polarity:** A band on one end of the SMD package indicates the **Cathode** (negative side).