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Mean Well RSD-100C-12 DC-DC Converter - 100.8W - 33.6~62.4V in 12V out 8.4A

miniature sizeeconomicalwithstand 5G vibration and 70°C operation
SKU RSD-100C-12
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Overview

RSD-100C-12 is the 12V output model of this series: rated current 8.4A, rated power 100.8W, typical efficiency 91%.

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-100C-12Specifications from the official datasheet (2025-07-18 edition)

OUTPUT

DC VOLTAGE
12V
RATED CURRENT
8.4A
CURRENT RANGE
0 ~ 8.4A
RATED POWER
100.8W
RIPPLE & NOISE (max.)Note.2
120mVp-p
VOLTAGE TOLERANCENote.3
±2.0%
LINE REGULATION
±0.3%
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
33.6 ~ 62.4VDC
VOLTAGE RANGE 1 SEC.
28.8 ~ 67.2VDC
EFFICIENCY (Typ.)
91%
DC CURRENT (Typ.)
2.4A/48V
INRUSH CURRENT (Typ.)
30A/48VDC
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
13.8 ~ 16.2V 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-100C-12 Mechanical Specification
Mechanical Specification
RSD-100C-12 Block Diagram
Block Diagram
RSD-100C-12 Input Under-Voltage Protection
Input Under-Voltage Protection
RSD-100C-12 Hold-up Time
Hold-up Time
RSD-100C-12 Efficiency vs Load & Vin Curve
Efficiency vs Load & Vin Curve
RSD-100C-12 Overload Protection
Overload Protection
RSD-100C-12 LOAD(%)
LOAD(%)
RSD-100C-12 Immunity to Environmental Conditions
Immunity to Environmental Conditions

Downloads

FAQ

Can I use the RSD-100C-12 to supply 12V PLC or industrial control equipment from a 33.6~62.4V DC bus?

Yes, this converter is intended for constant-voltage 12V output from a 33.6~62.4V input range. With up to 8.4A and 100.8W available, it fits 12V PLC accessories, relays, I/O modules, and other control loads within that power budget.

Is the RSD-100C-12 a good fit for 48V telecom or automation cabinets that need 12V power?

Yes, nominal 48V DC systems fall within the 33.6~62.4V input range of this model. It converts that input to a regulated 12V output at up to 8.4A and 100.8W for 12V control and embedded equipment.

Can the RSD-100C-12 be used for 12V embedded systems in compact industrial enclosures?

Its 161.0 × 68.0 × 36.0 mm housing and 0.563 kg weight make it suitable where enclosure space is limited. It is intended for constant-voltage 12V loads up to 8.4A and 100.8W from a 33.6~62.4V DC source.

Is this converter appropriate for equipment exposed to wide temperature swings?

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 provided, so it is best used in a protected cabinet or enclosure if the installation environment includes dust, washdown, or direct weather exposure.

What are the main differences between the RSD-100C-12 and related 100W RSD-100 models?

Within the RSD-100 100W group, the 12V models are RSD-100B-12, RSD-100C-12, and RSD-100D-12, each rated at 100.8W and 8.4A. The matching 24V models are RSD-100B-24, RSD-100C-24, and RSD-100D-24 at 100.8W and 4.2A, and the 5V models are RSD-100B-5, RSD-100C-5, and RSD-100D-5 at 100W and 20A; the C version belongs to the 33.6~62.4V input family.

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Mean Well RSD-100C-12 DC-DC Converter - 100.8W - 33.6~62.4V in 12V out 8.4A
Mean Well

Mean Well RSD-100C-12 DC-DC Converter - 100.8W - 33.6~62.4V in 12V out 8.4A

RSD-100C-12 is the 12V output model of this series: rated current 8.4A, rated power 100.8W, typical efficiency 91%.

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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