Pricing & AvailabilitySRP-70 SERIES

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  • Universal 85-264 VAC Input
  • High Efficiency
  • Advanced SMT Design
  • Compact 2.5" X 4.5" X 1.2" Size
  • Class B Emissions Per EN 55022/11
  • EMC to EN 61000-6-2 & EN 60601-1-2
  • 2 Year Warranty
  • Fits 1U Application
  • One to Four Outputs
  • EN 60950 ITE Certification
  • EN 60601-1 Medical Certification
  • Optional Chassis & Cover

Total Output Power50 W Convection Cooled
70W  Forced Air Cooled
Output Voltage Centering(50% Load)Output 1: +/-0.25%
Output 2,3,4: +/-5.00%
(All outputs at 50% rated load)
Source RegulationOutputs 1-4: 0.5%
Load Regulation (Local Sense)  
Output 1:0.5% (10-100% Load Change)
Output 2: 5.0% (20-100% Load Change)
(4001-5) 8.0% (20-100% Load Change)
(2001) 8.0% (20-100% Load Change)
Output 3: 5.0% (20-100% Load Change)
Output 4: 5.0% (20-100% Load Change)
Cross RegulationOutput 2-4: 5.0%
Output Voltage Adjust Range Output 1: 95% to 105%
Output NoiseOutputs 1-4: 1%
Turn On OvershootNone
Transient ResponseOutputs 1-4
Volt. Deviation 5%
Recovery Time 500 MicroS
Load Change 50% To 100%
Output Overvoltage Protection (Optional)Output 1: 110% to 150%
Output Overpower Protection110-16-% rated Pout, cycle on/off, auto recovery
Hold Up Time16 mS Min, Full Power
85 V Input
Start Up Time4 Second, 120 V Input
Source Voltage85-264 Voltage AC
Frequency Range47-63 Hz
Peak Inrush40A
Efficiency.78% Typ., Full Power, 230V (Varies by model)
Power Factor0.95(Full Power, 230V)
Ambient Operating Temperature Range0oC to +70oC Derating: See Power Rating Chart
Ambient Storage Temperature Range-40oC to +85oC
Temperature CoefficientOutputs 1-4: 0.02%/oC

Electrostatic DischargeEN 61000-4-2+/-8kV Contact Discharge
+/-8kVAir Discharge
Radiated Electro-magnetic Field EN 61000-4-380MHz-2.5GHz, 10V/m, 80% AM
EFT/BurstsEN 61000-4-4+/-2kV
SurgesEN 61000-4-5+/-1 kV Differential Mode
+/-2 kV Common Mode
Conducted ImmunityEN 61000-4-6.15-80MHz., 10V, 80% AM
Voltage Dips and InterruptionsEN 61000-4-1130% Reduction
95% Reduction
60% Reduction
95% Reduction
Radiated EmissionsEN 55011/22Class B
Conducted EmissionsEN 55011/22Class B
Harmonic Current EmissionsEN 61000-3-2 
Voltage Fluctuations and FlickerEN 61000-3-3 
Dielectric Strength 
Reinforced Insulation5656 VDC, Primary to Secondary, 1 Sec.
Basic Insulation2121 VDC, Primary to Ground, 1 Sec.

Operational Insulation

500 VDC, Secondary to Ground, 1 Sec.
Leakage Current<300 A Earth Leakage Current
Power Fail SignalLogic low with input power failure 10mS minimum prior to output 1 dropping 1%
Remote Sense(singles only)250mV compensation of output cable losses
Mean Time Between Failures100,000 Hours min., MIL-HDBK-217F, 25oC, GB
Weight0.1 Lbs.  Chassis and Cover
0.6 Lbs.  Open Frame
Consult factory for alternate output configuration.
Consult factory for positive, negative or floating output 2 or 3.
Refer to Application Information for complete output power ratings.

All specifications are maximum at 25C unless otherwise stated and are subjected to change without notice.
Specify optional chassis and cover when ordering.
ModelOutput 1Output 2Output 3Output 4
REL-70-3001+5V/6A+12V/2A -12V/2A
REL-70-3002+5V/6A+15V/2A -15V/2A
General Protection Class:


Overvoltage Category:


Pollution Degree:


File E137708
UL 60950, Third Edition
UL 2601 - 1 Second Edition
CB Report Per IEC 60950 (1999)
Second Edition A1, A2, A3, A4
All EN 60950 Deviations
CB Report Per IEC 60601-1-1988
First Edition, A1, A2
UL Recognition Mark for Canada
File E137708
CAN/CSA-C22.2 No. 60950:00
CAN/CSA-C22.2 No. 601-1-M90
TUVEN 60950/2000
EN 60601-1/A2: 1995
 Low Voltage Directive 

  1. Rated 10A with convection cooling.
  2. Total power must not exceed 50 watts with convection cooling on open frame models.
  3. Total power must not exceed 70 watts with 300LFM forced air cooling on open frame models.
  4. Total power must not exceed 40 watts with convection cooling and chassis/cover option.
  5. Total power must not exceed 70 watts with 300LFM forced air cooling and chassis/cover option.
  6. Each output can deliver its rated current but total output power must not exceed maximum power as determined by the cooling method state above.
  7. Rated 1.5 A with convection cooling.
  8. Sufficient area must be provided around convection cooled power supplies to allow natural movement of air develop.
  9. 300 linear feet per minute of airflow must be maintained one inch above any point of the heatsink in the direction shown when forced air cooling is required.
  10. A minimum load of 10% is required on output one to insure proper regulation of remaining outputs.
  11. Peak to peak output ripple and noise is measured directly at the output
    terminals of the power supply, without the use of the probe ground lead or retractable tip, 20 MHz bandwidth.
  12. This product was type tested and safety certificated using the the dielectric strength test voltages listed in Table V of UL 60601-1. In consideration of clause 20.4g, care must be taken to insure the voltage applied to a reinforced insulation does not over stress basic insulation. Secondary to ground capacitors may need to be removed prior to performing a dielectric strength type test on the end product. It is highly recommended that the DC test voltages listed in DVB.1. Annex DVB are not exceeded during a production-line dielectric strength test of the assembled end product. Please consult factory for further information.
  1. This product is intended for use as a professionally installed component within information technology and medical equipment.
  2. Remote sense terminals may be used to compensate for cable losses up to 250mV. The use of a twisted pair is recommended as well as a decoupling capacitor (0.1 0 10F) and a capacitor of 100F/amp connected across the load.
  3. This power supply has been safety approved and final tested using a DC
    dielectric strength test. Please consult factory before performing AC dielectric strength test.
  4. Maximum screw penetration into bottom chassis mounting holes is .100 inches.
  5. Maximum screw penetration into side chassis mounting holes is .250 inches.
  6. To meet emissions specifications, all four mounting hole ground pads must
    be electrically connected to a common metal chassis. Chassis/cover option recommended.
  7. This product is use only one fuse in the input circuit. In consideration of clause 57.6 of UL 2601-1, a second fuse may be required in the end product.

 Maximum Output Power vs. Ambient Temperature

P1AC Input.156 friction lock header mates with Molex 09-50-3031 or equivalent crimp terminal housing with Molex 08-50-0189 or equivalent crimp terminal.
P2DC Output(Single).156 friction lock header mates with Molex 09-50-3081 or equivalent crimp terminal housing with Molex 08-50-0189 or equivalent crimp terminal.
P2DC Output(Multiple).156 friction lock header mates with Molex 09-50-3081 or equivalent crimp terminal housing with Molex 08-50-0189 or equivalent crimp terminal.
GGround.187 quick disconnect terminal.
P3P.F./Sense(Single).100 friction lock header mates with Molex 22-55-2061 or equivalent crimp terminal housing with Molex type 71851 or equivalent crimp terminal.
P3P.F./Sense(Multiple) .100 friction lock header mates with Molex 50-57-9002 or equivalent crimp terminal housing with Molex type 71851 or equivalent crimp terminal.
  1.Optimum  2.Good  3.Fair