EmbeddedRelated.com
    Parts    TSR 1-24120
TSR 1-24120

TSR 1-24120

Traco Power
Linear Regulator Replacement DC DC Converter 1 Output 12V 1A 15V - 36V Input
Active7,303 in stock
Datasheet Digi-Key Compare Prices

Overview

The TSR 1-24120 is a high-efficiency non-isolated switching regulator designed as a direct drop-in replacement for 78-series linear regulators. It provides a fixed 12V output at up to 1A from an input voltage range of 15V to 36V, maintaining 95 percent efficiency to eliminate the need for bulky heatsinks. The 3-SIP module matches the standard TO-220 footprint, making it ideal for upgrading existing designs for better thermal management.

Why Choose This Part

The primary benefit is the 95 percent efficiency, which significantly reduces thermal stress on the system and allows for operation up to 85 degrees Celsius without a heatsink. It features a low standby current of 2mA and built-in short circuit protection, all within a compact SIP-3 package that saves valuable board space.

Applications

Linear Regulator Retrofitting
Replacing inefficient LM7812 linear regulators in existing PCB designs to reduce heat generation without requiring a board layout change.
Industrial Control Systems
Providing stable 12V rails for sensors and actuators from standard 24V industrial power buses.
Battery Powered Equipment
Extending runtime in portable devices by minimizing power loss during voltage step-down compared to linear regulation.
Distributed Power Architectures
Local point-of-load regulation for analog circuitry requiring a steady 12V supply in commercial ITE applications.

Key Specifications

Type Linear Regulator Replacement
Features SCP
Efficiency 95%
Applications ITE (Commercial)
Mounting Type Through Hole
Power (Watts) 12 W
Package / Case 3-SIP Module
Size / Dimension 0.46" L x 0.30" W x 0.40" H (11.7mm x 7.5mm x 10.1mm)
Number of Outputs 1
Voltage - Output 1 12V
Operating Temperature -40degC ~ 85degC (With Derating)
Voltage - Input (Max) 36V
Voltage - Input (Min) 15V
Current - Output (Max) 1A

Getting Started

To use this module, simply solder it into a standard TO-220 footprint, ensuring the pinout matches the input, ground, and output configuration of the target linear regulator. While it includes internal filter capacitors, adding external low-ESR capacitors close to the pins can further reduce output ripple in sensitive analog applications.

TSR 1-24120 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Size / Dimension Stock
TSR 1-24120 (this part) SIP-3 0.46" L x 0.30" W .. 7,303
TSR 1-24120SM SMD-10 0.60" L x 0.37" W .. 134