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Mean Well

Mean Well RSD-100B-5 DC-DC Converter - 100W - 16.8~31.2V in 5V out 20A

miniature sizeeconomicalwithstand 5G vibration and 70°C operation
SKU RSD-100B-5
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Overview

RSD-100B-5 is the 5V output model of this series: rated current 20A, rated power 100W, typical efficiency 88%.

Features

  • Compliance to BS EN/EN50155 and BS EN/EN45545-2 railway standard
  • 2:1 wide input range
  • Protections: Short circuit / Overload / Over voltage / Input reverse polarity
  • 4000VDC I/O isolation
  • Cooling by free air convection
  • Half encapsulated
  • Built-in constant current limiting circuit
  • 1U low profile 36mm
  • All using 105℃ long life electrolytic capacitors
  • LED indicator for power on
  • 100% full load burn-in test
  • 3 years warranty

Specifications

RSD-100B-5Specifications from the official datasheet (2025-07-18 edition)

OUTPUT

DC VOLTAGE
5V
RATED CURRENT
20A
CURRENT RANGE
0 ~ 20A
RATED POWER
100W
RIPPLE & NOISE (max.)Note.2
100mVp-p
VOLTAGE TOLERANCENote.3
±2.0%
LINE REGULATION
±0.5%
LOAD REGULATION
±1.0%
SETUP, RISE TIME
800ms, 50ms at full load
HOLD UP TIME (Typ.)
Please refer to page 3 Hold up Time( Load de-rating curve )

INPUT

VOLTAGE RANGE CONTINUOUS
16.8 ~ 31.2VDC
VOLTAGE RANGE 1 SEC.
14.4 ~ 33.6VDC
EFFICIENCY (Typ.)
88%
DC CURRENT (Typ.)
4.8A/24V
INRUSH CURRENT (Typ.)
30A/24VDC
INTERRUPTION OF VOLTAGE SUPPLY
EN50155:2021-Comply with S1 level

PROTECTION

OVERLOAD
105 ~ 135% rated output power Protection type : Constant current limiting, recovers automatically after fault condition is removed
OVER VOLTAGE
5.75 ~ 7V Protection type : Shut down o/p voltage, re-power on to recover

ENVIRONMENT

WORKING TEMP.
-40 ~ +55℃ (no derating) ; +70℃ @ 60% load by free air convection ; +70℃ no derating with external base plate, TX class compliance
WORKING HUMIDITY
5 ~ 95% RH non-condensing
STORAGE TEMP.
-40 ~ +85℃
TEMP. COEFFICIENT
± 0.03%/℃ (0 ~ 50℃ )
VIBRATION
10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes ; Mounting : compliance to IEC61373
OPERATING ALTITUDE
5000 meters

SAFETY & EMC (Note 5)

SAFETY STANDARDS
IEC 62368-1, UL 62368-1, AS/NZS 62368-1, EAC TP TC 004 approved, Design refer to BS EN/EN62368-1
WITHSTAND VOLTAGE
I/P-O/P:4KVDC I/P-FG:2.5KVDC O/P-FG:2.5KVDC
ISOLATION RESISTANCE
I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
Compliance to BS EN/EN55032 (CISPR32) Conduction Emission: Class A, Radiation Emission: Class B, EAC TP TC 020
EMC IMMUNITY
Compliance to BS EN/EN61000-4-2,3,4,5,6,8, BS EN/EN55035, light industry level, EAC TP TC 020
RAILWAY STANDARD
BS EN/EN50155 / IEC60571 including IEC61373 for shock & vibration, BS EN/EN50121-3-2 for EMC ; BS EN/EN45545-2 for fire protection

OTHERS

MTBF
2446.2K hrs min. Telcordia SR-332 (Bellcore) ; 254.2K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
161*68*36mm (L*W*H)
PACKING
0.563Kg; 24pcs/14.5Kg/0.91CUFT
Test conditions and notes6
  1. 1. All parameters NOT specially mentioned are measured at 24,48,110VDC input, rated load and 25℃ of ambient temperature.
  2. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
  3. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. Strongly recommended that external output capacitance should not exceed 5000uF. (Only for: RSD-100-5 / -12)
  5. 5. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
  6. 6. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).

Technical drawings

RSD-100B-5 Mechanical Specification
Mechanical Specification
RSD-100B-5 Block Diagram
Block Diagram
RSD-100B-5 Input Under-Voltage Protection
Input Under-Voltage Protection
RSD-100B-5 Hold-up Time
Hold-up Time
RSD-100B-5 Efficiency vs Load & Vin Curve
Efficiency vs Load & Vin Curve
RSD-100B-5 Overload Protection
Overload Protection
RSD-100B-5 LOAD(%)
LOAD(%)
RSD-100B-5 Immunity to Environmental Conditions
Immunity to Environmental Conditions

Downloads

FAQ

Can I use the RSD-100B-5 to power a 5V industrial controller or embedded computer from a 16.8~31.2V DC source?

Yes, this model is designed for constant-voltage 5V output from a 16.8~31.2V input range. It can deliver up to 20A and 100W, which fits 5V industrial control electronics, embedded computers, and automation logic that require a regulated 5V rail within that power level.

Is the RSD-100B-5 suitable for 24V battery-based automation systems that need a 5V rail?

Yes, a 24V DC source falls within the 16.8~31.2V input range of this converter. The unit provides a 5V constant-voltage output with up to 20A and 100W for control boards, HMIs, and embedded subsystems that run on 5V.

Can this converter be used in transportation or mobile equipment with vibration?

It is rated for 10~500Hz, 5G vibration with IEC61373 shock and vibration compliance, which makes it a practical choice for mobile or vibration-prone industrial equipment. Its 161.0 × 68.0 × 36.0 mm size also suits compact control enclosures where a 5V, 20A output is needed from a 16.8~31.2V input source.

Is the RSD-100B-5 suitable for outdoor or harsh-temperature installations?

It operates from -40°C to +55°C without derating, and up to +70°C at 60% load by free air convection or at full load when mounted on an external base plate (EN50155 TX class). No IP rating is listed in the provided specs, so it is better suited to protected enclosures rather than exposed outdoor mounting where water and dust protection would need to come from the enclosure.

How does the RSD-100B-5 compare with other 100W RSD-100 models?

In the 100W RSD-100 range, the 5V versions are RSD-100B-5, RSD-100C-5, and RSD-100D-5, each rated at 100W and 20A. The 12V versions are RSD-100B-12, RSD-100C-12, and RSD-100D-12 at 100.8W and 8.4A, while the 24V versions are RSD-100B-24, RSD-100C-24, and RSD-100D-24 at 100.8W and 4.2A; the main difference across B, C, and D versions is the input range family.

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Other RSD-100B Models

1 other model
ModelPowerVoltageCurrentIP Rating
Mean Well RSD-100B-24 DC-DC Converter - 100.8W - 16.8~31.2V in 24V out 4.2A 100.8W 24V 4.2A IP20 View
View all 85 RSD Series models
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Mean Well RSD-100B-5 DC-DC Converter - 100W - 16.8~31.2V in 5V out 20A
Mean Well

Mean Well RSD-100B-5 DC-DC Converter - 100W - 16.8~31.2V in 5V out 20A

Log in to see price

RSD-100B-5 is the 5V output model of this series: rated current 20A, rated power 100W, typical efficiency 88%.

Features

  • Compliance to BS EN/EN50155 and BS EN/EN45545-2 railway standard
  • 2:1 wide input range
  • Protections: Short circuit / Overload / Over voltage / Input reverse polarity
  • 4000VDC I/O isolation
  • Cooling by free air convection
  • Half encapsulated
  • Built-in constant current limiting circuit
  • 1U low profile 36mm
  • All using 105℃ long life electrolytic capacitors
  • LED indicator for power on
  • 100% full load burn-in test
  • 3 years warranty
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