TSRN-1 Series 1A step-down switching regulators with a wide input voltage range of up to 42 Vdc and a high efficiency of up to 95% which allows full load operation without the need for a heatsink or forced air cooling. These TSRN-1 Series 1A step-down switching regulators are suitable for positive and negative output circuits (please refer to table for additional data). Excellent line and load regulation and a low standby current makes these TSRN-1 switching regulators ideal for use in energy sensitive applications.

Input voltage range up to 42 VDC
Built in filter capacitors
No heat-sink required
Over-temperature and short circuit protection
Low standby current: 1 mA for <= 3.3 Vdc output models, 3 mA for >= 5.0 Vdc ouput models
SIP package fits existing TO-220 footprint
Pin compatible with LMxx linear regulators

Part numbers: TSRN 1-xxxx have straight pins
Part numbers: TSRN 1-xxxxA have angular pins
MTBF: MIL-HDBK-217 @ +25°C
Derating: 2.7 %/K above +70°C
For input voltages higher then 36 Vdc an input capacitor 22 μF/ 50 V is required

This switching regulator provides a stable output voltage of ±12 V DC, making it a key component in numerous electronic systems. Its efficiency and versatility make it suitable for automation, industrial power supply needs, and other applications. With the capability to handle input voltages of 13.5 to 24 V DC and 13.5 to 42 V DC, it delivers dependable performance in various conditions.

• Achieves high efficiency at 95% to minimise energy waste
• Maintains low ripple noise of 75 mV Pk-Pk for smooth operation
• Compact SIP package allows for efficient use of space
• Operates within a temperature range of -40 to +85°C
• Ensures line regulation of ±0.2% for consistent voltage output
• Designed for longevity with a mean time between failures (MTBF) of 20,000,000 hours

• Suitable for automation systems requiring stable voltage supply
• Ideal for electronic devices that need precise ±12 V regulation
• Utilised in printing, telecommunications, and industrial equipment
• Appropriate for projects necessitating through hole mounting solutions
• Compatible with systems needing low ripple noise

It operates effectively within the input voltage ranges of 13.5 to 24 V DC and 13.5 to 42 V DC.

The through hole mounting type simplifies integration into circuit boards or other devices.

With an MTBF of 20,000,000 hours, it is intended for extended use.

Yes, it operates reliably across a temperature range of -40 to +85°C, suitable for diverse environments.

It employs line regulation technologies to ensure a consistent output voltage within ±0.2%.