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Mean Well RSDW08G-03 DC-DC Converter - 8W - 18~75V in 3.3V out 2A
Mean Well RSDW08G-03 DC-DC Converter - 8W - 18~75V in 3.3V out 2A
Overview
RSDW08G-03 is the 3.3V output model of this series: rated power 8W, typical efficiency 80%.
RSDW08 and RDDW08 series are 8W module type DC-DC reliable railway converter with DIP24 package. It features inter-national standard pins, a high efficiency up to 86%, wide working temperature range -40~+85℃, 1.5KVDC 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 and 18~75V 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 24 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 I/O isolation
- Remote ON/OFF control
- 3 years warranty
Specifications
INPUT
- INPUT VOLTAGE (RANGE)
- Normal 48V (18 ~ 75V)
- INPUT CURRENT NO LOAD
- 5mA
- INPUT CURRENT FULL LOAD
- 172mA
- VOLTAGE RANGE
- 18~75Vdc
- SURGE VOLTAGE (100ms max.)
- 24Vin models : 50Vdc, 48Vin models : 100Vdc
- FILTER
- Pi type
- PROTECTION (Typ.)
- Fuse recommended. 24Vin models: 3A delay time Type, 48Vin models: 1.5A delay time Type
- INTERNAL POWER DISSIPATION
- 500mW
OUTPUT
- OUTPUT VOLTAGE
- 3.3V
- OUTPUT CURRENT
- 2000mA
- EFFICIENCY (Typ.)
- 80%
- CAPACITOR LOAD (MAX.)
- 2000μF
- VOLTAGE ACCURACY
- ±1.5%
- RATED POWER
- 8W
- RIPPLE & NOISENote.2
- 50mVp-p
- LINE REGULATIONNote.3
- ±0.5%
- LOAD REGULATIONNote.4
- Single output models: ±0.5%, Dual output models:±1%
- CROSS REGULATION
- ±5% @ 25%~100% load
- SWITCHING FREQUENCY (min.)
- 100KHz
PROTECTION
- SHORT CIRCUIT
- Protection type : Continuous, automatic recovery
- OVERLOAD
- 120 ~ 180% 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
- UNDER VOLTAGE LOCKOUT Shutdown voltage
- 24Vin: 8Vdc, 48Vin: 16Vdc
FUNCTION
- REMOTE CONTROL
- Power ON: R.C. ~ -Vin >3.5~36Vdc or open circuit ; Power OFF: R.C. ~ -Vin <1.2Vdc or short
ENVIRONMENT
- COOLING
- Free-air convection
- WORKING TEMP.
- -40 ~ +85℃ (Refer to "Derating Curve")
- CASE TEMPERATURE
- +100℃ 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; Mounting: compliance to EN61373(Category 1- Class B)
SAFETY & EMC ( Note.5)
- SAFETY STANDARDS
- EAC TP TC 020/2011(EAC TP TC 004 for 48Vin type only) approved
- WITHSTAND VOLTAGE
- I/P-O/P:1.5KVDC
- 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 A/B with external components Radiated BS EN/EN55032 N/A - 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
- Single: 1500Khrs, Dual: 1300Khrs MIL-HDBK-217F(25℃)
- DIMENSION (L*W*H)
- 31.8*20.3*10.2mm (1.25*0.8*0.4 inch)
- CASE MATERIAL
- Black coated copper with non-conductive base
- PACKING
- 18.4g ; 10pcs/per tube, 700pcs/70 tube/per carton
Test conditions and notes5
- 1.All parameters are specified at normal input(F:24Vdc, G:48Vdc), 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 10% 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
FAQ
Can I use the RSDW08G-03 for 3.3V electronics on higher-voltage industrial or vehicle power systems?
This model is intended for constant-voltage 3.3V output applications up to 2A and 8W. Its listed 18-75V input range makes it more suitable for higher-voltage source systems than the lower-input versions in the same series.
Is the RSDW08G-03 suitable for embedded control boards that need isolated 3.3V power from an 18-75V source?
It can fit embedded boards needing a regulated 3.3V rail when the load remains within 2A and 8W. The converter also lists 1.5KVDC input-output isolation, which is relevant for isolated conversion from an 18-75V input range.
Can this converter be used in railway electronics with a higher input voltage range?
The sheet lists compliance with the EN50155 railway standard (including EN61373 for shock & vibration and EN50121-3-2 for EMC), which supports railway-related electronic applications. It also pairs that with a wide 18-75V input range and a 3.3V constant-voltage output.
Would the RSDW08G-03 work for compact telecom or automation subsystems that need 3.3V logic power?
It is relevant for compact subsystems that need 3.3V constant-voltage output within 8W and 2A. The body size of 31.8 × 20.3 × 10.2 mm in a DIP package helps when installation space is limited.
Can the RSDW08G-03 be used in outdoor or temperature-stressed equipment?
The converter is specified for -40°C to +85°C operation, which supports use in equipment exposed to wide temperature swings. No IP rating is provided in the specs, so outdoor enclosure protection cannot be verified from the available data.
How does the RSDW08G-03 compare with the other RSDW08G models?
The RSDW08G siblings share the same 8W family and 18-75V input class, but their outputs differ: RSDW08G-03 is 3.3V at 2A, RSDW08G-05 is 5V at 1.6A, RSDW08G-12 is 12V at 666mA, and RSDW08G-15 is 15V at 530mA. This lets selection center on required output voltage and the listed current rating for each version.
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