## PBYR2035-45CT Overview The **PBYR2035-45CT** is a high-performance power Schottky rectifier diode. It is designed for use in low-voltage, high-frequency inverters, free-wheeling, and polarity protection applications. It is commonly housed in a **TO-220AB** package and features a dual-diode (common cathode) configuration. --- ### Key Technical Specifications | Parameter | Specification | Description | | :--- | :--- | :--- | | **Configuration** | Dual Common Cathode | Two diodes sharing a center pin (cathode) | | **Repetitive Peak Reverse Voltage ($V_{RRM}$)** | 45 V | Maximum voltage the diode can block | | **Average Rectified Forward Current ($I_{F(AV)}$)** | 20 A | 10A per diode (Total 20A for the package) | | **Forward Voltage Drop ($V_F$)** | ~0.57 V | Low voltage drop at rated current ($I_F = 10A$) | | **Reverse Recovery Time ($t_{rr}$)** | Negligible | Schottky diodes have ultra-fast switching | | **Operating Junction Temp ($T_j$)** | Up to 150°C | Maximum heat tolerance of the silicon die | --- ### Internal Structure and Pinout The device consists of two Schottky barrier diodes connected in a **Common Cathode** arrangement. This is ideal for full-wave rectification in switch-mode power supplies (SMPS). 1. **Pin 1 (Anode 1):** Input for the first diode. 2. **Pin 2 (Cathode):** Shared output (connected to the mounting tab). 3. **Pin 3 (Anode 2):** Input for the second diode. --- ### Core Electronic Features * **Low Forward Voltage Drop:** The "Schottky" barrier results in significantly lower power loss compared to standard silicon diodes ($0.5V$ vs $0.7V-1.1V$), leading to higher efficiency. * **High Frequency Operation:** Because there is no minority carrier recovery time, the diode can switch at very high speeds without significant switching losses. * **Guard Ring Protection:** The internal die typically includes a guard ring for stress protection and to ensure long-term reliability against high-voltage transients. --- ### Common Applications * **Switch Mode Power Supplies (SMPS):** Used as output rectifiers to convert high-frequency AC to DC. * **OR-ing Diodes:** Used in redundant power systems to prevent back-feeding. * **Free-wheeling Diodes:** Protecting transistors from inductive spikes in motor controllers. * **Battery Chargers:** Efficient rectification for charging circuits.