Fast Delivery DigiKey customers in the United States can choose from a wide range of fast, reliable delivery options, with shipping rates starting as low as $4.99. Payment Types Payment in Advance by Wire Transfer Marketplace Product More Products From Fully Authorized Partners Average Time to Ship 1-3 Days. Please see product page, cart, and checkout for actual ship speed. Extra Ship Charges May Apply R-78 Series Our R-78 series is the original non-isolated, high-efficiency switching regulator, designed as a pin compatible drop- in replacement for LM78 linear regulators - no heatsink required! RECOM's R-78 series switching regulator modules offer all the advantages of a switching regulator - high efficiency, wide input voltage range, accurate output voltage regulation - with a low cost for production quantities. The R-78 series offers a risk-free, pre-tested solution that makes designing a switching regulator circuit redundant. The R-78 series meets all of the most commonly requested specifications yet makes no compromise when it comes to quality and reliability as it is guaranteed with a full 3-Year warranty from RECOM. Features Ambient Temperature Range -40°C to +85°C MTBF up to 3.0 Million Hours Ultra-High Specifications RoHS and Reach Compliant R-78xx Modular Switching Regulator Low profile case: 11.6 x 10.4 x 8.5 mm Continuous output current: 1 A Low standby current: 1 mA Ultra wide input voltage range: 5 to 42 Vin Operating temperature range: -40°C to +85°C SIP3 package compatible to TO-220 footprint Applications Point of Load Distributed Supply Systems Battery Operated Systems Controllers and Sensors R-78AAxx-SMD Modular Switching Regulator Efficiency up to 97%, Non isolated, no need for heatsinks RoHS 6/6 Conform (100% Lead Free) High Reflow Temperature SMD Package Adjustable Output Voltage Remote On/Off Control UL94V-0 Package Material Very Low Shutdown Current See Application Notes for use as an inverter (alternative to LM79xx Linear) 3 year warranty Point of Load Distributed Supply Systems Battery Operated Systems Controllers and Sensors R-78B Modular Switching Regulator Efficiency up to 97%, Non isolated, no need for heatsinks Pin-out compatible with LM78XX linear regulators Low profile ( L*W*H=11.5*8.5*17.5mm) Wide input range (4.75V ~ 34V) Short circuit protection, thermal shutdown Non standard outputs available as special order between 1.5V ~15V Low ripple and noise “L” version with 90° pins See Application Notes for use as an inverter (alternative to LM79xx Linear) 3 year warranty Point of Load Distributed Supply Systems Battery Operated Systems Controllers and Sensors R-78C Series Switching Regulators Low profile case: 11.6 x 10.4 x 8.5 mm Continuous output current: 1 A Low standby current: 1 mA Ultra wide input voltage range: 5 to 42 Vin Operating temperature range: -40°C to +85°C SIP3 package compatible to TO-220 footprint Applications Industrial Battery powered devices Part Number R-78E switching regulator module now offers all the advantages of a switching regulator (high efficiency, wide input voltage range, accurate output voltage regulation) with a low cost for production quantities. The R-78E offers a risk-free, pre-tested solution that makes designing a switching regulator circuit redundant. The R-78E meets all of the most commonly requested specifications yet makes no compromise when it comes to quality and reliability as it is guaranteed with a full 3 year warranty from RECOM. Low cost switching regulator Battery powered devices Part Number R-78HB Series Switching Regulators High input voltage range, up to 48 V Efficiency up to 96% R-78HE 0.3 Series Switching Regulators Capable of withstanding 100 V surges -40°C up to +105°C operating temperature range 83% efficiency rating Cost-efficient Applications IoT Battery-powered applications (12 V to 72 V lithium-ion and lead-acid batteries) IIoT R-78S Series Single Output Switching Regulator Continuous Short-Circuit Protection EN62368-1 + AM2 (pending) R-78T Series Switching Regulators The new R-78T series provides optional regulated 3.3 V, 5 V, or 12 V at 1 A in continuous operation, but can also handle peak currents up to 1.5 A for 10s. Due to their high efficiency of up to 95%, the modules do not require fans or heatsinks. They can operate reliably at temperatures between -40°C and +85°C without derating. With a wide input voltage range of 7 V to 42 V and no heatsinks, these modules are a space-saving solution for portable or battery-operated applications. Industry Standard Pin-out Wide Input Range (7 V-42 V) Operating Temperature Range -40°C up to 85°C Short Circuit Protection Low profile Low cost ROF-78 Modular Switching Regulator Efficiency up to 95%, Non isolated, very low profile 4mm Wide input range (4.75V ~ 36V) Short circuit protection, thermal shutdown Non standard outputs available as special order Low ripple and noise EMC Compliant See Application Notes for use as an inverter (alternative to LM79xx Linear) 3 year warranty Point of Load Distributed Supply Systems Battery Operated Systems Controllers and Sensors R-78 Evaluation Boards Features 3.3 V from a single AA battery or from an external source (boost converter) Efficiency 93%, >80% at 10% load Input voltage range down to 0.65 V Input and output power measurement capability Micro USB Type B or 0.100” (2.54 mm) pin output Reference design board R-REF02-78S is a ready-to-use design Applications Thank you! Keep an eye on your inbox for news and updates from DigiKey! Please enter an email address I agree to receive marketing emails from DigiKey. I understand that I can withdraw consent at any time. Please review our Privacy Notice . Please accept the checkbox Subscribe Information Contact and support