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Mean Well RSDW20H-12 DC-DC Converter - 20W - 43~160V in 12V out 1.67A

Name: Mean Well RSDW20H-12 DC-DC Converter - 20W - 43~160V in 12V out 1.67A
Brand: Mean Well
SKU: RSDW20H-12
Price: 40.74 USD
Availability: InStock

compliance with EN50155 and EN45545 railway standards2:1 or 4:1 wide input rangeisolation 4000VDC1U low profilehalf encapsulated

SKU RSDW20H-12

$40.74 USD

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Overview

RSDW20H-12 is the 12V output model of this series: rated power 20W, typical efficiency 90%.

RSDW20 and RDDW20 series are 20W module type DC-DC reliable railway converter with 2"x1" package. It features international standard pins, a high efficiency up to 90%, wide working temperature range -40~+85℃, 1.5KVDC(F/G models)/3KVDC(H models) I/P-O/P isolation voltage, compliance with EN50155 railway standard, continuous-mode short circuit protection, etc. The models account for different input voltage 9~36V, 18~75V and 43~160V 4:1 wide input range, and various output voltage, 3.3V/5V/12V/15V for single output and ±5V/±12V/±15V for dual outputs, which are suitable for railway, trams, buses and also can be used in the harsh environment with high vibration, high dust, extremely low or high temperature, etc.

Features

Compliance with EN50155 railway standard
DIP 2"x1" package with standard pinout
4:1 wide input range
Wide operating temperature range -40 ~ +85℃
No minimum load required
Full encapsulated
Protections: Short circuit (Continuous) / Overload / Over voltage / Input under voltage
1.5KVDC,3KVDC I/O isolation by models
Remote ON/OFF control
3 years warranty

Specifications

RSDW20H-12Specifications from the official datasheet (2024-11-18 edition)

MODEL SELECTION TABLE

INPUT VOLTAGE (RANGE): Normal 110V (43 ~ 160V)
INPUT CURRENT NO LOAD: 3mA
INPUT CURRENT FULL LOAD: 202mA
OUTPUT VOLTAGE: 12V
OUTPUT CURRENT: 1670mA
EFFICIENCY (Typ.): 90%
CAPACITOR LOAD (MAX.)^{* For each output}: 1000μF

INPUT

VOLTAGE RANGE: 43~160Vdc
SURGE VOLTAGE (100ms max.): 24Vin models : 50Vdc, 48Vin models : 100Vdc, 110Vin models : 200Vdc
FILTER: Pi type
PROTECTION: Fuse recommended. 24Vin models: 4A delay time Type, 48Vin models: 2A delay time Type, 110Vin models: 0.8A delay time Type

OUTPUT

VOLTAGE ACCURACY: ±1.5%
RATED POWER: 20W
RIPPLE & NOISE^Note.2: 60mVp-p
LINE REGULATION^Note.3: ±0.2%
LOAD REGULATION^Note.4: Single output models: ±0.5%, Dual output models:±1%
CROSS REGULATION: ±5% @ 25%~100% load
SWITCHING FREQUENCY (Typ.): F/G: Single output 350KHz, Dual output 400KHz H: 250KHz
EXTERNAL TRIM ADJ. RANGE (Typ.): ±10% (Single output model only)

PROTECTION

SHORT CIRCUIT: Protection type : Continuous, automatic recovery
OVERLOAD: 110 ~ 160% rated output power Protection type : Recovers automatically after fault condition is removed
OVER VOLTAGE: Protection type : Clamp by diode
UNDER VOLTAGE LOCKOUT Start-up voltage: 24Vin: 8.8Vdc, 48Vin: 17Vdc, 110Vin: 40Vdc
UNDER VOLTAGE LOCKOUT Shutdown voltage: 24Vin: 8Vdc, 48Vin: 16Vdc, 110Vin: 38Vdc

FUNCTION

REMOTE CONTROL: Power ON: >5.5~75Vdc or open circuit (F/G models) ; >3.5~75Vdc or open circuit (H models) Power OFF: <1.2Vdc or short (F/G/H models)

ENVIRONMENT

COOLING: Free-air convection
WORKING TEMP.: -40 ~ +85℃ (Refer to "Derating Curve")
CASE TEMPERATURE: +105℃ max.
WORKING HUMIDITY: 20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY: -55 ~ +125℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: 0.03% / ℃ (0 ~ 71℃)
SOLDERING TEMPERATURE: 1.5mm from case of 1 ~ 3sec./260℃ max.
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC ( Note.5)

SAFETY STANDARDS: EAC TP TC 020/2011(EAC TP TC 004 for 48Vin/110Vin type only) approved
WITHSTAND VOLTAGE: F/G: I/P-O/P 1.5KVDC, H: I/P-O/P 3KVDC
ISOLATION RESISTANCE: I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
ISOLATION CAPACITANCE (Typ.): 1000pF
EMC EMISSION: Parameter Standard Test Level

Conducted BS EN/EN55032 Class B with external components
Radiated BS EN/EN55032 Class B with external components
EMC IMMUNITY: Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 2, ±8KV air, ±4KV contact
Radiated Susceptibility BS EN/EN61000-4-3 Level 2, 3V/m
EFT/Bursts BS EN/EN61000-4-4 Level 1, 0.5KV
Surge BS EN/EN61000-4-5 Level 1, 0.5KV Line-Line
Conducted BS EN/EN61000-4-6 Level 2, 3V(e.m.f.)
RAILWAY STANDARD: EN50155 including EN61373 for shock & vibration, EN50121-3-2 for EMC

Parameter	Standard	Test Level
Conducted	BS EN/EN55032	Class B with external components
Radiated	BS EN/EN55032	Class B with external components

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 2, ±8KV air, ±4KV contact
Radiated Susceptibility	BS EN/EN61000-4-3	Level 2, 3V/m
EFT/Bursts	BS EN/EN61000-4-4	Level 1, 0.5KV
Surge	BS EN/EN61000-4-5	Level 1, 0.5KV Line-Line
Conducted	BS EN/EN61000-4-6	Level 2, 3V(e.m.f.)

OTHERS

MTBF: F/G: 720Khrs ; H: 880Khrs MIL-HDBK-217F(25℃)
DIMENSION (L*W*H): 50.8*25.4*10.2mm (2*1*0.4 inch)
CASE MATERIAL: Black coated copper with Non-Conductive Base
PACKING: 35g ; 12pcs/per tube, 300pcs/25 tube/per carton

Test conditions and notes5

1.All parameters are specified at normal input(F:24Vdc, G:48Vdc, H:110Vdc), rated load, 25℃ 70% RH ambient.
2.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1μf & 47μf capacitor.
3.Line regulation is measured from low line to high line at rated load.
4.Load regulation is measured from 0% to 100% rated load.
5.The final equipment must be re-confirm that it still meet EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.”(as available on http://www.meanwell.com)

Technical drawings

RSDW20H-12 Mechanical Specification — Mechanical Specification

RSDW20H-12 Derating Curve — Derating Curve

RSDW20H-12 H models(43~160Vin) — H models(43~160Vin)

RSDW20H-12 ※Required external componets to meet BS… — ※Required external componets to meet BS…

Typical applications

Bus, tram, metro or railway system
Telecom/datacom system
Wireless network
Industrial control facility
Instrument
Analyzer
Highly vibrating, heavily dusty, extremely low or high temperature harsh environment

Downloads

Certificates3

Mean Well RSDW20-RDDW20-EMC Certificate PDF Download

Mean Well RSDW20-RDDW20-CE-dec Certificate PDF Download

Mean Well RSDW20-RDDW20-UK-dec Certificate PDF Download

Catalogues2

Mean Well DC-DC Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the RSDW20H-12 for 12V industrial controllers or relay modules?

Yes, if the load needs a regulated 12V output and stays within 1.67A and 20W. This model is a constant-voltage 12V converter with a 43-160Vdc input range for systems operating inside that specified input window.

Is this a good fit for 12V automation sensors, HMIs, or panel devices?

It is suited to 12V automation devices that require up to 1.67A, with total load power not exceeding 20W. The compact 50.8 × 25.4 × 10.2 mm size and 2" × 1" package can also help where panel space is limited.

Can the RSDW20H-12 be used in railway or transit electronics that need 12V power?

It can be considered for 12V railway or transit electronics when the load is within 1.67A and 20W. The datasheet lists compliance with the EN50155 railway standard (including EN61373 and EN50121-3-2) and 3KVDC input-to-output isolation.

Is this converter meant for indoor use only, or can it handle wider temperature swings?

The specified operating temperature range is -40°C to +85°C, so it can handle broad temperature variation within those limits. No IP rating is provided, so exposed outdoor use should rely on a suitable enclosure rather than the converter alone.

What is the difference between the RSDW20H-12 and the other models in the same series?

The RSDW20H-05, RSDW20H-12, and RSDW20H-15 all share 20W power, 43-160Vdc input, 50.8 × 25.4 × 10.2 mm dimensions, 0.035 kg weight, and -40°C to +85°C operation. Their outputs differ: 5V at 4A for the -05, 12V at 1.67A for the -12, and 15V at 1.33A for the -15.

Payment & Security

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