Recom R-78 Modular Switching Regulators

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 Applications
  • Step Down Regulators with up to 97% Efficiency
  • Ambient Temperature Range -40°C to +85 °C
  • MTBF up to 3.0 Million Hours
  • Ultra High Specifications
  • High Efficiency - No Heatsink Required
  • RoHS and Reach Compliant
  • Built in EN-55022
  • Medical Approvals
  • FCC Class B Filter
  • 3-Year Warranty
  • Drop in Replacement for LM78xx
  • Point-of-Load
  • Distributed Supply Systems
  • Battery Operated Systems
  • Controllers and Sensors
  • Positioning Systems
  • Robotics
  • Medical
  • Telecommunications
  • Measurement Equipment

R-78T Series Switching Regulators

RECOM introduces the new SMD Switching Regulator Series Offers Upgraded Replacement for TI Power Trends Modules

R-78E

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.

The modules measure only 23 x 27.2 x 10mm or 23 x 29.4 x 8mm. They are packaged for fully automatic assembly with "tape & reel" or "tray" options, and are designed for the reflow soldering process. The warranty period is 3 years.

Features Applications
  • Efficiency up to 95%, no need for heatsinks!
  • Industry Standard Pin-out
  • 1.5A Start-Up Overload Capacity
  • Wide Input Range (7V-42V)
  • Operating Temperature Range -40°C up to 85°C
  • Short Circuit Protection
  • Fixed Switching Frequency (350kHz), Shielded Magnetics
  • Low profile
  • Low cost
  • Embedded Designs
  • Point of Load
  • Distributed Supply Systems
  • Battery Operated Systems
  • Controllers and Sensors
  • Positioning Systems
  • Robotics
  • Medical
  • Telecommunications
  • Measurement Equipment
  • Fan Controllers
Digi-Key P/N Manufacturer P/N Description Buy Now
945-2153-ND R-78T3.3-1.0/AC-TRAY DC/DC CONVERTER 3.3V
945-2154-ND R-78T3.3-1.0/AL-TRAY DC/DC CONVERTER 3.3V 3W
945-2155-ND R-78T5.0-1.0/AL-TRAY DC/DC CONVERTER 5V 5W
945-2156-ND R-78T12-1.0/AL-TRAY DC/DC CONVERTER 12V 12W
945-2157-ND R-78T12-1.0/FC-TRAY DC/DC CONVERTER 12V 12W
945-2158-1-ND R-78T3.3-1.0/FC-R DC/DC CONVERTER 3.3V 3W
945-2159-1-ND R-78T12-1.0/AC-R DC/DC CONVERTER 12V 12W
945-2160-1-ND R-78T5.0-1.0/AC-R DC/DC CONVERTER 5V 5W
945-2161-1-ND R-78T5.0-1.0/FC-R DC/DC CONVERTER 5V 5W
R-78E Switching Regulator Module

Low-cost switching regulator to save engineers significant development time and keep their BOM under budget

R-78E

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.

The input voltage covers the 7 VDC to 28 VDC range, allowing operation from both an industrial 24 V bus or from either a 9 V or 12 V battery. The converter is fully protected against overload, short circuit, and over-temperature conditions. Due to the R-78E’s high efficiency of up to 92% at an output voltage of 5 V/500 mA, no heatsink is required for operation over the full industrial temperature range of -40°C to +85°C (+70°C without derating). The compact SIP3 package, TO-220 compatible, measures only 11.6 x 8.5 x 10.4 mm saving precious board space.

Features Applications
  • 5 V / 500 mA output
  • Efficiency up to 92%
  • -40°C to +85°C Operating Temperature
  • Low cost switching regulator
  • 7 to 28 V input voltage range (4:1)
  • Short circuit protection
  • Industrial
  • Medium and large volume applications
  • Battery powered devices
  • 24 V Bus powered devices
Digi-Key P/N Manufacturer P/N Description Buy Now
945-2201-ND R-78E5.0-1.0 DC/DC CONVERTER 5V 5W Buy Now
945-1648-5-ND R-78E5.0-0.5 CONV DC/DC 5V 500MA OUT THRU Buy Now
945-1661-5-ND R-78E3.3-0.5 DC/DC CONVERTER 3.3V 500MA THRU Buy Now
R-78C Series Switching Regulators

Compact and highly efficient, the new R-78C series switching regulator operates up to 42 V

R-78C Series

RECOM has significantly improved the existing features of the standard R-78 series with a much higher input voltage range of up to 42 VDC and double the output power in the same size case. The R-78C series offers 15 W/cm³ of power. Although the R-78C has the highest efficiency of 96% when the input/output voltage variance is only a few volts, it still can achieve 90% efficiency even with an input voltage of 30 V higher than the output voltage. The R-78C can deliver high efficiency over the entire input voltage range and with a nearly constant efficiency when the load varies between 20% and 100%.

Features Applications
  • Very high efficiency: up to 96%
  • 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
  • Industrial
  • Medium and large volume applications
  • Battery powered devices
  • 24 V Bus powered devices
Digi-Key P/N Manufacturer P/N Description Buy Now
945-1391-5-ND R-78C1.8-1.0 CONV DC/DC 1A 1.8V OUT SIP VERT Buy Now
945-1392-5-ND R-78C12-1.0 CONV DC/DC 1A 12V OUT SIP VERT Buy Now
945-1393-5-ND R-78C15-1.0 CONV DC/DC 1A 15V OUT SIP VERT Buy Now
945-1394-5-ND R-78C3.3-1.0 CONV DC/DC 1A 3.3V OUT SIP VERT Buy Now
945-1395-5-ND R-78C5.0-1.0 CONV DC/DC 1A 5V OUT SIP VERT Buy Now
945-1396-5-ND R-78C9.0-1.0 CONV DC/DC 1A 9V OUT SIP VERT Buy Now
R-78xx-0.5 Modular Switching Regulator

High Efficiency 0.5 amp output with medical approvals

The R-78xx-0.5 Series high efficiency switching regulators are ideally suited to replace 78xx linear regulators and are pin compatible. The efficiency of up to 97% means that very little energy is wasted as heat so there is no need for any heatsinks with their additional space and mounting costs. Low ripple and noise figures and short circuit, overload and over temperature protection round off the specifications of this versatile converter series. This R-78xx-0.5 is fully certified to EN 60601-1-2 (Medical Equipment), EN 55022 (Emissions), and EN55024 (Immunity) EMC Standards and for EN-60950-1 Safety.

Features Applications
  • Very high efficiency: up to 96%
  • 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
  • Medical Equipment
  • Drop in Replacement for LM78xx
  • Point of Load
  • Distributed Supply Systems
  • Battery Operated Systems
  • Controllers and Sensors
  • Positioning Systems
Digi-Key P/N Manufacturer P/N Description Buy Now
945-1030-ND R-781.8-0.5 CONV DC/DC .5A 1.8V OUT SIP VERT Buy Now
945-1032-ND R-7812-0.5 CONV DC/DC 0.5A 12VOUT SIP VERT Buy Now
945-1033-ND R-7815-0.5 CONV DC/DC 0.5A 15V OUT SIP VERT Buy Now
945-1035-ND R-783.3-0.5 CONV DC/DC .5A 3.3V OUT SIP VERT Buy Now
945-1037-ND R-785.0-0.5 CONV DC/DC 0.5A 5V OUT SIP VERT Buy Now
945-1039-ND R-786.5-0.5 CONV DC/DC .5A 6.5V OUT SIP VERT Buy Now
945-1040-ND R-789.0-0.5 CONV DC/DC 0.5A 9V OUT SIP VERT Buy Now
R-78HBxx-0.5 Modular Switching Regulator

Input voltage up to 72V with 96% efficiency and 0.5 amp output

The R-78HBxx-Series high efficiency, high input voltage switching regulators are pin compatible and ideally suited to replacing 78xx linear regulators. An efficiency of up to 96% means that very little energy is wasted as heat so there is no need for any heatsinks with their additional space requirements and mounting costs. An input voltage range of up to 8:1 is unsurpassed by any other converter and allows the full stored energy utilization of standard and high voltage batteries. The fully protected output is ideal for industrial applications (especially for industry standard 24VDC bus supplies) and the L-Version with 90° pins allows direct replacement for laid-flat regulators where component height is at a premium. Low ripple and noise figures and a short circuit input current of typically only 15mA round off the specifications of this versatile converter series.

Features Applications
  • High voltage input range, up to 72V
  • Efficiency up to 96%, Non isolated, no need for heatsinks
  • Pin-out compatible with LM78XX linear regulators
  • Low profile (L*W*H=11.5*8.5*17.5mm)
  • Short circuit protection, thermal shutdown
  • Non standard outputs available as special order between 3.3V~24V
  • Low ripple and noise
  • “L” version with 90° pins
  • See Application Notes for use as an inverter (alternative to LM79xx Linear)
  • 3 year warranty
  • Battery Powered Applications
  • Telecommunication
  • Automotive
  • Industrial
  • Aerospace
Digi-Key P/N Manufacturer P/N Description Buy Now
945-1057-ND R-78HB12-0.5 CONV DC/DC 0.5A 12V OUT SIP VERT Buy Now
945-1058-ND R-78HB15-0.5 CONV DC/DC 0.5A 15V OUT SIP VERT Buy Now
945-1612-5-ND R-78HB15-0.5L CONV DC/DC 0.5A 20-72VIN 15V Buy Now
945-1060-ND R-78HB3.3-0.5 CONV DC/DC .5A 3.3V OUT SIP VERT Buy Now
945-1061-ND R-78HB5.0-0.5 CONV DC/DC 0.5A 5V OUT SIP VERT Buy Now
945-1614-5-ND R-78HB5.0-0.5L CONV DC/DC 0.5A 9-72VIN 5V Buy Now
945-1062-ND R-78HB6.5-0.5 CONV DC/DC .5A 6.5V OUT SIP VERT Buy Now
945-1063-ND R-78HB9.0-0.5 CONV DC/DC 0.5A 9V OUT SIP VERT Buy Now
R-78Bxx-1.0 Modular Switching Regulator

High efficiency 1.0 amp output with medical approvals

The R-78Bxx-1.0 Series high efficiency switching regulators are ideally suited to replace 78xx linear regulators and are pin compatible. The efficiency of up to 97% means that very little energy is wasted as heat so there is no need for any heatsinks with their additional space and mounting costs. Low ripple and noise figures and short circuit input current of typically only 10mA, overload and over temperature protection round off the specifications of this versatile converter series. This R-78Bxx-1.0 is fully certified to EN 60601-1-2 (Medical Equipment), EN 55022 (Emissions), and EN55024 (Immunity) EMC Standards and for EN-60950-1 Safety. The L-Version with 90° pins allows direct replacement for laid-flat regulators where component height is at a premium.

Features Applications
  • 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
  • Medical Equipment
  • Drop in Replacement for LM78xx
  • Point of Load
  • Distributed Supply Systems
  • Battery Operated Systems
  • Controllers and Sensors
  • Positioning Systems
Digi-Key P/N Manufacturer P/N Description Buy Now
945-1045-ND R-78B1.8-1.0 CONV DC/DC 1A 1.8V OUT SIP VERT Buy Now
945-1052-ND R-78B5.0-1.0 CONV DC/DC 1A 5V OUT SIP VERT Buy Now
945-1053-ND R-78B5.0-1.0L CONV DC/DC 1A 5V OUT SIP Buy Now
945-1055-ND R-78B6.5-1.0 CONV DC/DC 1A 6.5V OUT SIP VERT Buy Now
945-1056-ND R-78B9.0-1.0 CONV DC/DC 1A 12-34VIN 9VOUT Buy Now
945-1611-5-ND R-78B9.0-1.0L CONV DC/DC 1A 12-32VIN 9V Buy Now
945-1046-ND R-78B12-1.0 CONV DC/DC 1A 12V OUT SIP VERT Buy Now
945-1047-ND R-78B12-1.0L CONV DC/DC 1A 12V OUT SIP Buy Now
945-1048-ND R-78B15-1.0 CONV DC/DC 1A 15V OUT SIP VERT Buy Now
945-1608-5-ND R-78B15-1.0L CONV DC/DC 1A 20-32VIN 15V Buy Now
945-1049-ND R-78B3.3-1.0 CONV DC/DC 1A 3.3V OUT SIP VERT Buy Now
945-1050-ND R-78B3.3-1.0L CONV DC/DC 1A 3.3V OUT SIP Buy Now
R-78Bxx-1.5 Modular Switching Regulator

High efficiency 1.5 amp output with medical approvals

The R-78Bxx-1.5 Series high efficiency switching regulators are ideally suited to replace 78xx linear regulators and are pin compatible. The efficiency of up to 97% means that very little energy is wasted as heat so there is no need for any heatsinks with their additional space and mounting costs. Low ripple and noise figures and short circuit input current of typically only 10mA, overload and over temperature protection round off the specifications of this versatile converter series. This R-78Bxx-1.5 is fully certified to EN 60601-1-2 (Medical Equipment), EN 55022 (Emissions), and EN55024 (Immunity) EMC Standards and for EN-60950-1 Safety. The L-Version with 90° pins allows direct replacement for laid-flat regulators where component height is at a premium.

Features Applications
  • Efficiency up to 95%, Non isolated, no need for heatsinks
  • Pin-out compatible with LM78XX Linears
  • 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 ~6.5V
  • Low ripple and noise
  • “L” version with 90° pins
  • See Application Notes for use as an inverter (alternative to LM79xx Linear)
  • 3 year warranty
  • Medical Equipment
  • Drop in Replacement for LM78xx
  • Point of Load
  • Distributed Supply Systems
  • Battery Operated Systems
  • Controllers and Sensors
  • Positioning Systems
Digi-Key P/N Manufacturer P/N Description Buy Now
945-1051-ND R-78B3.3-1.5 CONV DC/DC 1.5A 3.3VOUT SIP VERT Buy Now
945-1609-5-ND R-78B3.3-1.5L CONV DC/DC 1.5A 4.75-18VIN 3.3V Buy Now
945-1054-ND R-78B5.0-1.5 CONV DC/DC 1.5A 5V OUT SIP VERT Buy Now
945-1610-5-ND R-78B5.0-1.5L CONV DC/DC 1.5A 6.5-18VIN 5V Buy Now
ROF-78xx-0.5SMD Modular Switching Regulator

High efficiency 0.5A open frame surface mount

The ROF-78xx-0.5SMD high efficiency switching regulators are ideally suited to replace SMD linear regulators. The efficiency of up to 95% means that very little energy is wasted as heat so full power operation over the full industrial ambient temperature range of -40°C to +85°C is possible. Low ripple and noise figures and short circuit, overload and over-temperature protection round off the specifications of this versatile converter series. This ROF-78xx-0.5SMD is compliant to EN 55022 CISPR 22 Class B (Emissions) with a simple external filter, EN 61000-6-1 and EN 61000-6-2 Crit A (Radiated Susceptibility), EN 61000-4-2 Crit B (Electrostatic Discharge 4kV).

Features Applications
  • 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
  • Drop in Replacement for LM78xx
  • Point of Load
  • Distributed Supply Systems
  • Battery Operated Systems
  • Controllers and Sensors
  • Positioning Systems
Digi-Key P/N Manufacturer P/N Description Buy Now
945-1378-ND ROF-785.0-0.5SMD CONV DC/DC 0.5A 6.5-36VIN 5VOUT Buy Now
R-78AAxx-0.5SMD Modular Switching Regulator

High efficiency 0.5 amp SMD switching regulators ideally suited to modern pick-and-place mass production.

The R-78AAxx-0.5SMD series are manufactured without lead and meet the requirements for RoHS 6/6 as well as the increased reflow soldering temperatures associated with vapor phase soldering, making these high efficiency switching regulators ideally suited to modern pick-and-place mass production. The efficiency of up to 97% means that very little energy is wasted as heat. The additional features of remote on/off control and adjustable output voltages will find many uses in the battery-powered, industrial, medical and automotive markets.

Features Applications
  • 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
  • Wide input range.(4.75V ~ 32V)
  • Short circuit protection, Thermal shutdown
  • 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
  • Drop in Replacement for LM78xx
  • Point of Load
  • Distributed Supply Systems
  • Battery Operated Systems
  • Controllers and Sensors
  • Positioning Systems
  • Industrial
  • Medical
  • Automotive
Digi-Key P/N Manufacturer P/N Description Buy Now
945-1041-2-ND R-78AA12-0.5SMD-R CONV DC/DC 0.5A 12V OUT SMD Buy Now
945-1042-2-ND R-78AA3.3-0.5SMD-R CONV DC/DC 0.5A 3.3V OUT SMD Buy Now
945-1043-2-ND R-78AA5.0-0.5SMD-R CONV DC/DC 0.5A 5V OUT SMD Buy Now
945-1607-5-ND R-78AA6.5-0.5SMD CONV DC/DC 0.5A 8-32VIN 6.5V Buy Now
R-78AAxx-1.0SMD Modular Switching Regulator

High efficiency 1.0 amp SMD switching regulators ideally suited to modern pick-and-place mass production.

The R-78AAxx-1.0SMD series are manufactured without lead and meet the requirements for RoHS 6/6 as well as the increased reflow soldering temperatures associated with vapor phase soldering, making these high efficiency switching regulators ideally suited to modern pick-and place mass production. The efficiency of up to 94% means that very little energy is wasted as heat. The additional features of remote on/off control and adjustable output voltages will find many uses in the battery-powered, industrial, medical and automotive markets.

Features Applications
  • High Reflow Temperature SMD Package
  • RoHS 6/6 Conform (100% Lead Free)
  • Adjustable Output Voltage
  • Short circuit protection, thermal shutdown
  • Remote On/Off Control
  • Very Low Shutdown Current
  • Drop in Replacement for LM78xx
  • Point of Load
  • Distributed Supply Systems
  • Battery Operated Systems
  • Controllers and Sensors
  • Positioning Systems
  • Industrial
  • Medical
  • Automotive
Digi-Key P/N Manufacturer P/N Description Buy Now
945-1606-5-ND R-78AA3.3-1.0SMD CONV DC/DC 1A 4.75-18VIN 3.3V Buy Now
945-1044-2-ND R-78AA5.0-1.0SMD-R CONV DC/DC 1A 5V OUT SMD Buy Now

Product Training Modules

R-78 Series: Modular Switching Regulators

Become an expert on the benefits of the R-78 series in comparison to standard linear regulators.