15CTQ045

Overview

The Vishay 15CTQ045 is a dual Schottky rectifier in a center-tap TO-220AB package. It features two common cathode elements rated for 15 A average forward current and 45 V maximum reverse voltage. The device utilizes proprietary barrier technology to achieve low forward voltage drop while supporting junction temperatures up to 150 °C. Key electrical characteristics include a peak non-repetitive surge current of 810 A and a maximum thermal resistance of 3.50 °C/W per leg.

Feature Summary

• Proprietary barrier technology enables reliable operation at elevated junction temperatures up to 150 °C
• Low forward voltage drop design optimizes efficiency in power conversion applications
• High purity epoxy encapsulation provides enhanced mechanical strength and moisture resistance
• Guard ring structure ensures ruggedness and long-term reliability under industrial conditions

Applications

• Switching power supplies
• DC-DC converters
• Freewheeling diodes
• Reverse battery protection circuits

Procurement Notes

Verify the specific ordering suffix when purchasing. The standard production version lacks lead-free designation, whereas the PbF variant complies with environmental regulations. Confirm package style matches the required TO-220AB configuration. Ensure technical requirements align with the specified 45 V rating and 15 A current capacity before finalizing orders.

Selection Notes

Select this component for high-frequency switching applications requiring low conduction losses. The dual common cathode configuration supports center-tapped transformer topologies efficiently. Evaluate thermal management strategies based on the 3.50 °C/W junction-to-case resistance. Consider the 150 °C operating limit for high-temperature environments where standard silicon rectifiers may fail.

Part Context

This device belongs to the Vishay 15CTQ series of high-power Schottky rectifiers. The series offers variants with different reverse voltage ratings, including 35 V and 40 V options. All members share the same physical footprint and thermal characteristics, allowing for flexible design integration within the same product family.

Replacement Considerations

Direct substitutes within the same series include the 15CTQ035 and 15CTQ040. These alternatives maintain identical packaging and current ratings but differ in maximum reverse voltage specifications. Verify that the system voltage requirements align with the lower or equal ratings of these cross-reference models.

FAQ

What is the maximum junction temperature for the 15CTQ045?

The device is designed and qualified for industrial-level operation with a maximum junction temperature range extending up to 150 °C.

How is the internal circuit configured?

The 15CTQ045 contains two independent Schottky diode elements arranged in a common cathode configuration, suitable for center-tap applications.

What is the peak non-repetitive surge current rating?

Each leg can withstand a peak one-cycle non-repetitive surge current of 810 A for a 5 µs sine wave pulse following any rated load condition.