12TQ045

Overview

The Vishay 12TQ045 is a single Schottky rectifier rated for 15 A average forward current and 45 V maximum DC reverse voltage. It utilizes TO-220AC through-hole packaging with the base connected to the cathode. The device operates reliably up to a junction temperature of 150 °C, featuring a typical forward voltage drop of 0.56 V at 15 A and 25 °C. Maximum non-repetitive surge current reaches 990 A under specified pulse conditions.

Feature Summary

• Optimized proprietary barrier technology ensures very low forward voltage drop while maintaining moderate leakage currents.
• High purity, high temperature epoxy encapsulation provides enhanced mechanical strength and moisture resistance.
• Guard ring structure improves ruggedness and long-term reliability during operation.
• Qualified for industrial level applications requiring robust performance in switching environments.

Applications

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

Procurement Notes

Verify component authenticity by checking markings against official Vishay documentation. Confirm package style matches TO-220AC specifications. Ensure thermal management aligns with the 2.0 °C/W junction-to-case rating. Validate that operating temperatures remain within the -55 to 150 °C range. Cross-reference datasheet revision dates to ensure compatibility with design requirements.

Selection Notes

Select this component when low forward voltage drop is critical for efficiency in 45 V systems. Consider the 15 A continuous current capability for moderate power applications. Evaluate thermal resistance requirements based on case temperature limits. Verify that the TO-220AC package fits the available board space and mounting constraints. Assess if the industrial qualification meets environmental standards.

Part Context

This part belongs to the 12TQ... Series of Vishay High Power Products Schottky Rectifiers. The series includes variants with different voltage ratings such as 35 V and 40 V, all sharing the same 15 A current rating and TO-220 package. These devices are designed for general-purpose rectification where speed and low loss are prioritized over high voltage blocking capabilities.

Replacement Considerations

Direct substitutes include other Vishay 12TQ series parts like the 12TQ040 or 12TQ035 if lower voltage ratings are acceptable. Verify pinout compatibility and thermal characteristics before substitution. Ensure any replacement maintains the required 15 A current handling and 150 °C junction temperature limit.

FAQ

What is the maximum junction temperature for the 12TQ045?

The maximum junction temperature (TJ) for the 12TQ045 is 150 °C.

How is the base terminal connected in the TO-220AC package?

In the TO-220AC package, the base terminal is electrically connected to the cathode.

What is the typical forward voltage drop at rated current?

The typical forward voltage drop is 0.56 V at an instantaneous forward current of 15 A and a junction temperature of 25 °C.