STR5412 Switching Regulator IC – 5-Pin Precision Power Module

Product Overview

The STR5412 is a well-known regulator in the repair community, specifically for its use in B+ voltage regulation circuits. It is engineered to maintain a very tight voltage tolerance, which is vital for the long-term health of a TV’s horizontal output transistor (HOT) and flyback transformer. By combining the switching element and regulator into one 5-pin module, it offers a space-saving and high-efficiency alternative to older discrete designs.

Key Features

• 5-Pin Design: Optimized for feedback-based voltage regulation.
• High Voltage Stability: Maintains accurate output even with input variations.
• Integrated Feedback: Simplifies the secondary side regulation circuit.
• Rugged Housing: Built to withstand the thermal stress of high-frequency switching.
• Low Failure Rate: Known for its long service life in consumer electronics.

Benefits

Using the STR5412 allows for a quick and reliable restoration of ‘dead’ or ‘cycling’ power supplies. It prevents ‘runaway voltage’ which can destroy sensitive microprocessors on the mainboard. For technicians, it is an essential inventory item for repairing legacy and modern power circuits that require a dedicated B+ regulator IC.

Technical Specifications

• Model: STR5412 / STR-5412
• Package: ZIP-5
• Voltage Rating: Optimized for 115V B+ lines.
• Applications: Linear and Switching PSU.

Applications

Primary voltage regulator for TVs, Monitors, and high-stability DC power supplies.

Package Contents

1 x STR5412 Switching Regulator IC.

Why Buy This Product?

We source original-specification ICs that meet professional repair standards. Trust the STR5412 to provide the exact voltage your equipment needs.

Frequently Asked Questions

Q: Can I use STR5412 for a 110V output?
A: Yes, it is typically used in circuits outputting between 110V and 115V DC.
Q: Is this a genuine part?
A: Yes, all our semiconductors are sourced from reputable distributors to ensure they meet the datasheet ratings.