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TSR 0.5-2433

TSR 0.5-2433

Traco Power
Linear Regulator Replacement DC DC Converter 1 Output 3.3V 500mA 4.75V - 32V Input
Active1,260 in stock
Datasheet Digi-Key Compare Prices

Overview

The TSR 0.5-2433 is a high-efficiency switching regulator designed as a drop-in replacement for 78xx series linear regulators in a 3-pin SIP package. It provides a fixed 3.3V output at up to 500mA from a wide input voltage range of 4.75V to 32V. This converter eliminates the need for bulky heatsinks, achieving up to 91 percent efficiency and significantly reducing thermal management requirements in commercial designs.

Why Choose This Part

The module features a low standby current of 5mA and integrated protection against short circuits and over-temperature conditions. Its pin-compatible SIP-3 footprint allows engineers to bypass the thermal limitations of TO-220 linear regulators, operating in environments up to 90 degrees Celsius without a heatsink.

Applications

Linear Regulator Retrofit
Upgrading existing 7805 or 7833 linear regulator designs to improve efficiency and reduce heat dissipation without changing PCB layout.
Industrial Logic Power
Generating stable 3.3V rails for microcontrollers and digital logic from standard 12V or 24V industrial power buses.
Battery Powered Systems
Extending battery life in portable devices by minimizing wasted power through switching conversion rather than dissipative linear regulation.

Key Specifications

Type Linear Regulator Replacement
Features OTP, SCP
Efficiency 91%
Applications ITE (Commercial)
Mounting Type Through Hole
Power (Watts) 1.7 W
Package / Case 3-SIP Module
Size / Dimension 0.45" L x 0.30" W x 0.40" H (11.5mm x 7.6mm x 10.2mm)
Number of Outputs 1
Voltage - Output 1 3.3V
Operating Temperature -40degC ~ 90degC (With Derating)
Voltage - Input (Max) 32V
Voltage - Input (Min) 4.75V
Current - Output (Max) 500mA

Getting Started

To use this part, simply replace a 78xx series regulator on your PCB, ensuring the input voltage is between 4.75V and 32V. While the device operates with no external capacitors, adding 10uF ceramic capacitors at the input and output can further reduce ripple and improve transient response in noise-sensitive applications.

TSR 0.5-2433 Family

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

Part Number Features Package Size / Dimension Stock
TSR 0.5-2433 (this part) OTP, SCP SIP-3 0.45" L x 0.30" W .. 1,260
TSR 0.5-2433SM Remote On/Off, OTP.. SMD-10 0.60" L x 0.38" W .. 12

Also Consider

OKI-78SR-3.3/1.5-W36-C Murata Power Solutions - Provides a higher output current of up to 1.5A for more demanding 3.3V loads in a similar vertical SIP package.
TSR 1-2433 Traco Power - A pin-compatible alternative from the same series offering a 1A output capacity if power requirements increase.
R-78E3.3-0.5 RECOM Power - A cost-effective 500mA switching regulator replacement for 3.3V applications with a slightly different input range.