Over 15 years experience of providing support of MEAN WELL Power Supplies
Image shown is a representation only. Exact specifications should be obtained from the product datasheet.
Mean Well RSDW20H-12 DC-DC Converter - 20W - 43~160V in 12V out 1.67A
Mean Well RSDW20H-12 DC-DC Converter - 20W - 43~160V in 12V out 1.67A
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
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 & NOISENote.2
- 60mVp-p
- LINE REGULATIONNote.3
- ±0.2%
- LOAD REGULATIONNote.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
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
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
Datasheet1
Certificates3
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
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Other RSD Series Models
50 other modelsPlease log in to write a review.
Write a review
Reviews are checked before publishing. By submitting you confirm this is your genuine experience with this product.
Submitting your review…
It's published and now helps other buyers.
We're checking it and it'll appear shortly.
Please try again.
