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Mean Well RQ-50B Power Supply 50W 5V 12V -5V -12V 5A
Overview
RQ-50B is the 5V 12V -5V -12V output model of this series: rated current 5A 1A 0.5A 0.5A, rated power 45.5W, typical efficiency 74%.
Features
- Universal AC input / Full range
- Protections: Short circuit / Overload / Over voltage
- Cooling by free air convection
- LED indicator for power on
- 100% full load burn-in test
- All using 105℃ long life electrolytic capacitors
- Withstand 300VAC surge input for 5 second
- High operating temperature up to 70℃
- Withstand 5G vibration test
- High efficiency, long life and high reliability
- 3 years warranty
Specifications
OUTPUT
- OUTPUT NUMBER
- CH1 CH2 CH3 CH4
- DC VOLTAGE
- 5V 12V -5V -12V
- RATED CURRENT
- 5A 1A 0.5A 0.5A
- CURRENT RANGENote.3
- 0 ~ 6A 0~ 1.5A 0 ~ 1A 0 ~ 1A
- RATED POWER
- 45.5W
- RIPPLE & NOISE (max.)Note.2
- 80mVp-p 120mVp-p 100mVp-p 150mVp-p
- VOLTAGE ADJ. RANGE
- CH1: 4.75 ~ 5.5V
- VOLTAGE TOLERANCENote.3
- ±2.0% ±6.0% ±3.0% ±3.0%
- LINE REGULATIONNote.4
- ±0.5% ±1.5% ±0.5% ±0.5%
- LOAD REGULATIONNote.5
- ±0.5% ±3.0% ±1.0% ±1.0%
- SETUP, RISE TIME
- 500ms, 20ms/230VAC 1200ms, 30ms/115VAC at full load
- HOLD UP TIME (Typ.)
- 60ms/230VAC 10ms/115VAC at full load
INPUT
- VOLTAGE RANGE
- 88 ~ 264VAC 125 ~ 373VDC (Withstand 300VAC surge for 5sec. Without damage)
- FREQUENCY RANGE
- 47 ~ 63Hz
- EFFICIENCY (Typ.)
- 74%
- AC CURRENT (Typ.)
- 1.3A/115VAC 0.8A/230VAC
- INRUSH CURRENT (Typ.)
- COLD START 48A/230VAC
- LEAKAGE CURRENT
- <2mA / 240VAC
PROTECTION
- OVERLOAD
- 110 ~ 150% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
- OVER VOLTAGE
- CH1: 5.75 ~ 6.75V Protection type : Hiccup mode, recovers automatically after fault condition is removed
ENVIRONMENT
- WORKING TEMP.
- -25 ~ +70℃ (Refer to "Derating Curve")
- WORKING HUMIDITY
- 20 ~ 90% RH non-condensing
- STORAGE TEMP., HUMIDITY
- -40 ~ +85℃, 10 ~ 95% RH
- TEMP. COEFFICIENT
- ±0.03%/℃ (0 ~ 50℃)on +5V output
- VIBRATION
- 10 ~ 500Hz, 5G 10min./1cycle, period for 60min. each along X, Y, Z axes
SAFETY & EMC (Note 6)
- SAFETY STANDARDS
- UL62368-1, TUV BS EN/EN62368-1, EAC TP TC 004, BIS IS13252(Part1): 2010/IEC 60950-1:2005 approved
- WITHSTAND VOLTAGE
- I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC
- 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) Class B, BS EN/EN61000-3-2,-3, EAC TP TC 020
- EMC IMMUNITY
- Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN55035, BS EN/EN61000-6-2 (BS EN/EN50082-2), heavy industry level, EAC TP TC 020
OTHERS
- MTBF
- 2519.1K hrs min. Telcordia SR-332 (Bellcore) ; 450.1K hrs min. MIL-HDBK-217F (25℃)
- DIMENSION
- 99*97*36mm (L*W*H)
- PACKING
- 0.41Kg; 45pcs/19.5Kg/0.94CUFT
Test conditions and notes7
- 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
- 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. Tolerance : includes set up tolerance, line regulation and load regulation, when multi-channel output, it is recommended that CH1 load > 10%.
- 4. Line regulation is measured from low line to high line at rated load.
- 5. Load regulation is measured from 0% to 100% rated load.
- 6. 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 )
- 7. 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
Downloads
FAQ
Can I use the RQ-50B for a compact embedded controller that needs 5V logic and +/-12V rails?
Yes, if the system power requirement fits within the unit's 45.5W total rating. The RQ-50B provides a 5V main output at 5A and includes 12V, -5V, and -12V outputs in one quad output supply. That makes it relevant for smaller mixed-signal control and interface boards.
Is the RQ-50B suitable for bench or lab equipment with low-power digital and analog sections?
It can be a practical option for lower-power equipment that needs several DC rails from one supply. The 5V rail is rated at 5A, total power is 45.5W, and the housing is only 99.0 x 97.0 x 36.0 mm. Those specs suit compact instruments and test fixtures with modest load requirements.
Can the RQ-50B be used in a small industrial monitoring or signal-conditioning enclosure?
Yes, where the design is centered on 5V electronics and also requires 12V and -12V or -5V rails. The supply uses constant voltage operation and accepts 88-264VAC input, which is useful for equipment deployed across different AC mains conditions. Its 0.41 kg weight also helps in smaller cabinet layouts.
Is the RQ-50B appropriate for indoor factory panels or exposed outdoor locations?
The product is rated for operation from -25°C to +70°C and is specified to withstand 5G vibration, which supports industrial indoor use. The provided specs do not list an IP rating. Without an IP rating in the product data, outdoor exposure suitability is not established here.
How does the RQ-50B compare with other RQ series power supplies in this group?
The RQ-50B is one of the lower-power models at 45.5W with a 5V main output rated at 5A. Other listed siblings are RQ-50C at 50W and 5V 5A, RQ-50D at 53.4W and 5V 3A, RQ-65B at 62.5W and 5V 6A, RQ-65C at 65W and 5V 5A, RQ-65D at 68W and 5V 4A, RQ-85B at 80.7W and 5V 7A, RQ-85C at 82.5W and 5V 7A, RQ-85D at 84W and 5V 6A, RQ-125B at 120W and 5V 11A, RQ-125C at 122.5W and 5V 10A, and RQ-125D at 124W and 5V 8A.
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