VS-20CTQ035PBF

Diode Arrays Overview

The VS-20CTQ035PbF is a center-tap Schottky rectifier from Vishay Semiconductors, packaged in TO-220AB. It features a common cathode configuration with two independent diodes rated for a maximum average forward current of 20 A per leg and a repetitive peak reverse voltage of 35 V. The device operates at junction temperatures up to 175 °C and exhibits a low forward voltage drop of 0.64 V at 10 A and 25 °C. Reverse leakage current is specified at 2 mA at 25 °C and 15 mA at 125 °C.

Diode Arrays Feature Summary

• Optimized proprietary barrier technology enables reliable operation at high junction temperatures up to 175 °C.
• Guard ring structure provides enhanced ruggedness and long-term reliability under demanding conditions.
• High purity, high temperature epoxy encapsulation ensures mechanical strength and moisture resistance.

Diode Arrays Applications

• Switching power supplies
• Converters
• Freewheeling diodes
• Reverse battery protection

Diode Arrays Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm compliance requirements. The PbF designation indicates lead-free and RoHS compliance. Confirm that the package outline matches the required thermal and mechanical mounting specifications for the target application design.

Diode Arrays Selection Notes

Select this component when a dual Schottky rectifier with a center tap is required for high-frequency switching applications. Ensure the circuit design accommodates the 35 V reverse voltage rating and the 20 A average forward current capability per leg. Verify thermal management strategies to maintain junction temperatures within the specified operating range during continuous operation.

Diode Arrays Part Context

This part belongs to the VS-20CTQ...PbF series, which includes variants with different reverse voltage ratings such as 40 V and 45 V. All members of this series share the same TO-220AB package and general electrical characteristics, differing primarily in their maximum DC reverse voltage specifications.

Diode Arrays Replacement Considerations

Direct substitutes include the VS-20CTQ035-N3 variant, which offers halogen-free compliance while maintaining identical electrical performance and pinout compatibility within the same series family.

Diode Arrays FAQ

What is the maximum non-repetitive surge current rating?

The maximum non-repetitive surge current (IFSM) is 1060 A for a 5 μs sine pulse or 265 A for a 10 ms sine pulse per leg.

How does the forward voltage drop vary with temperature?

At 10 A, the forward voltage drop decreases from 0.64 V at 25 °C to 0.57 V at 125 °C. At 20 A, it drops from 0.76 V at 25 °C to 0.68 V at 125 °C.

What is the typical junction capacitance?

The typical junction capacitance (CT) per leg is 900 pF, measured at VR = 5 VDC with a test signal frequency range of 100 kHz to 1 MHz.