VS-40CPQ080-N3 Vishay

The VS-40CPQ080-N3 from Vishay is a high-performance Schottky rectifier belonging to the 40CPQ080 series. It features a dual anode common cathode configuration within a robust TO-247-3 through-hole package, constructed with Silicon (Si) technology. This component is engineered for high-current, high-frequency rectification applications, offering a low forward voltage drop of 530 mV at a forward current of 20 A and a repetitive reverse voltage of 80 V. Its FRED Pt (Fast Recovery Epitaxial Diode Platinum) technology ensures very fast and soft recovery characteristics, making it ideal for improving efficiency and reducing noise in switch-mode power supplies (SMPS), freewheeling diodes, and reverse battery protection circuits. With an operating temperature range from -55°C to +150°C, it is suitable for demanding industrial and automotive environments.

Features

• High Current Capability: Supports a continuous forward current (If) of 20 A and a high forward surge current (Ifsm) of 3.2 kA, ensuring robust performance under transient conditions.
• Low Forward Voltage: Features a typical forward voltage (Vf) of 530 mV, which minimizes conduction losses and improves overall system efficiency.
• Fast and Soft Recovery: Utilizes FRED Pt technology for excellent switching performance, reducing electromagnetic interference (EMI) and voltage spikes in high-frequency circuits.
• High-Temperature Operation: Rated for a maximum junction temperature of +150°C, providing reliable operation in high-ambient-temperature applications.

Technical Specifications

• Product Category: Schottky Rectifiers
• Mounting Style: Through Hole
• Configuration: Dual Anode Common Cathode
• Technology: Si
• If - Forward Current: 20 A
• Vrrm - Repetitive Reverse Voltage: 80 V
• Vf - Forward Voltage: 530 mV
• Ifsm - Forward Surge Current: 3.2 kA
• Ir - Reverse Current: 1.7 mA
• Minimum Operating Temperature: -55 °C
• Maximum Operating Temperature: +150 °C
• Tradename: FRED Pt
• Series: 40CPQ080

Pin Configuration and Functions

• Pin 1: Anode 1 - First anode terminal of the dual Schottky diode.
• Pin 2: Cathode - Common cathode terminal for both internal diodes.
• Pin 3: Anode 2 - Second anode terminal of the dual Schottky diode.

Typical Applications

• Switch-Mode Power Supplies (SMPS): Used as an output rectifier in high-frequency DC/DC converters.
• Motor Drive and Inverter Circuits: Serves as a freewheeling or clamp diode to protect switching transistors.
• Automotive Systems: Applied in alternator rectification and reverse polarity protection modules.
• Welding Equipment Power Supplies: Provides efficient rectification in high-current power stages.

Equivalent / Alternative Parts

• 40CPQ080 (Vishay) - Base series part with identical electrical specifications and package.
• VS-40CPQ080 - Same part from Vishay without the specific "-N3" suffix, typically indicating minor lot or packaging variations.

Advantages

• Superior Efficiency: The combination of low Vf and fast recovery significantly reduces power losses compared to standard PN junction rectifiers, leading to cooler operation and higher efficiency.
• Enhanced System Reliability: The high surge current rating and wide operating temperature range ensure stable performance under stressful electrical and environmental conditions, increasing system MTBF.

Limitations

• Moderate Voltage Rating: With a Vrrm of 80 V, it is not suitable for high-voltage AC line rectification (e.g., 220V AC input) or circuits with significant voltage spikes exceeding this rating.
• Through-Hole Package: The TO-247 package is not suitable for modern, space-constrained surface-mount (SMD) PCB designs, requiring manual or wave soldering processes.

Package Information

TO-247-3 package (also known as TO-3PF), a through-hole mounting type with three leads. It is a large, robust package designed for high-power dissipation, commonly used for power transistors and rectifiers.

Manufacturer Information

Vishay Intertechnology is a globally recognized manufacturer of discrete semiconductors and passive electronic components. Founded in 1962, Vishay has established a reputation for technological innovation, product reliability, and a broad portfolio that serves a wide range of industries including industrial, computing, automotive, consumer, telecommunications, military, aerospace, and medical.

Design-in Tips

• Adequate Heat Sinking: Due to its high current capability, always mount the device on a properly sized heatsink to maintain the junction temperature within safe limits, especially when operating near maximum ratings.
• Snubber Circuit Consideration: Although featuring soft recovery, in circuits with high di/dt or parasitic inductance, consider an RC snubber network across the diode to further dampen voltage ringing and overshoot.
• PCB Layout for Current: Ensure the PCB traces connected to the anode and cathode pins are sufficiently wide to handle the high forward current with minimal voltage drop and heating.

Lifecycle Status & PCN/PDN Notes

Lifecycle status information is not provided in the input parameters. No Product Change Notification (PCN) or Product Discontinuation Notification (PDN) information is available for this specific part number based on the provided data.