MEAN WELL PD-25A is an open-frame dual-output AC/DC power supply. CH1 provides 5 V at 2.1 A and CH2 provides 12 V at 1.2 A, with a combined rated power of 24.9 W. Free-air convection, minimum channel loads and installation-orientation derating apply.
Product Datasheet
Download MEAN WELL PD-25 Datasheet (PDF)
The PD-25 section is on PDF pages 1, 2. Refer to the complete mechanical drawings and notes when planning installation.
Complete Dual-Output Unit
Complete model
PD-25A.
Outputs referenced to COM
CH1: 5 V DC; CH2: 12 V DC.
Combined rated output power
24.9 W for the complete two-output supply.
Cooling
Free-air convection; apply the horizontal or vertical temperature curve.
Efficiency, typical
71%.
Both channels belong to one power supply. Keep each channel within its specified current range, including the minimum load, and keep total output power within 24.9 W. The individual maximum currents are not an additional combined-power rating; apply the two channel limits and total power limit together.
CH1 Output Specifications
Nominal output voltage
5 V DC relative to COM.
Rated current
2.1 A.
Specified current range
0.2 to 2.5 A.
Minimum load current
0.2 A.
Maximum ripple and noise
50 mVp-p.
Voltage tolerance
±2.0%.
Line regulation
±0.5%.
Load regulation
±1.0%.
Overvoltage threshold
5.75 to 6.75 V, with the indicated output polarity.
CH2 Output Specifications
Nominal output voltage
12 V DC relative to COM.
Rated current
1.2 A.
Specified current range
0.1 to 1.5 A.
Minimum load current
0.1 A.
Maximum ripple and noise
150 mVp-p.
Voltage tolerance
±6.0%.
Line regulation
±2.0%.
Load regulation
±4.0%.
Overvoltage threshold
13.8 to 16.2 V, with the indicated output polarity.
Input, Timing and Test Conditions
Input range
85–264 VAC or 120–370 VDC.
AC frequency
47–63 Hz.
Typical input current
0.65 A at 115 VAC; 0.4 A at 230 VAC.
Typical cold-start inrush
32 A.
Leakage current
Less than 0.5 mA at 240 VAC.
Set-up / rise time
250 / 50 ms at 230 VAC; 250 / 30 ms at 115 VAC, full load.
Typical hold-up time
100 ms at 230 VAC; 16 ms at 115 VAC, full load.
Switching frequency
Fixed 100 kHz.
Production test
100% full-load burn-in test.
Unless stated otherwise, specifications are measured at 230 VAC input, rated load and 25°C ambient. Ripple/noise uses 20 MHz bandwidth and a 12-inch twisted pair terminated with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation.
Protection
Short circuit / overload
Above 105% of rated output power; hiccup mode with automatic recovery after the fault condition is removed.
Overvoltage response
Output shutoff with clamping by a zener diode; channel-specific thresholds are listed above.
Overtemperature
Output shutdown; re-power on to recover.
Cooling and Environment
Working temperature
−10 to +60°C, subject to the installation-orientation derating curve.
Horizontal installation
80% load at −10°C, rising to 100% at 0°C; full load through 50°C, then decreasing to 60% at 60°C.
Vertical installation
80% load at −10°C, rising to 100% at 0°C; full load through 45°C, then decreasing to 60% at 55°C.
Working humidity
20–90% RH, non-condensing.
Storage
−20 to +85°C; 10–95% RH.
Temperature coefficient
±0.03%/°C over 0–50°C on CH1 only.
Vibration
10–500 Hz, 2 G; 10 minutes per cycle, 60 minutes along each X, Y and Z axis.
High-altitude temperature adjustment
Above 2000 m, reduce allowable ambient temperature by 3.5°C per 1000 m for fanless models, or 5°C per 1000 m for fan-cooled models.
Maintain free airflow around the power supply. The static-characteristic chart on PDF page 2 illustrates PD-25A output voltage and ripple versus input voltage; it is not a separate maximum-load curve for all models.
Mechanical Installation and Grounding
Dimensions, L × W × H
107 × 61 × 28 mm.
Drawing tolerance
±1 mm.
Mounting holes
Four Ø3.5 mm holes; centre spacing 94 × 53 mm. The drawing also marks 6.35 mm and 3.81 mm edge references.
Underside projection
3 mm maximum projection below the board; maintain the required mounting clearance.
Grounding
Connect the mounting points identified by the “To Chassis Grounding” arrows to chassis ground.
Heatsink isolation
HS1, HS2 and HS3 must not be shorted together.
AC fuse marking
2.5 A / 250 V, marked FS1 in the drawing.
Use the complete mechanical drawing for mounting orientation and electrical clearances. Keep conductive fixings and chassis parts clear of the marked heatsinks.
Connectors and Mating Parts
AC input CN1
Molex 41791-03 or equivalent: pin 1 AC/L; pin 2 no pin; pin 3 AC/N.
Dual output CN2
Molex 41791-04 or equivalent: pin 1 V1 (CH1); pins 2 and 3 COM; pin 4 V2 (CH2).
This model at CN2
Pin 1: 5 V; pins 2–3: COM; pin 4: 12 V.
Mating housing reference
Molex 2139 or equivalent, as identified in the connector table.
Terminal reference
Molex 2478 or equivalent, as identified in the connector table.
Select the complete mating housing and contact reference for the required circuit count and wire size. The catalogue identifies the connector and mating-part references; it does not specify a supplied cable kit or separate mounting-accessory kit.
Safety and Electromagnetic Compatibility
Listed safety approvals
UL62368-1, TUV BS EN/EN62368-1 and EAC TP TC004.
Model-specific CCC approval
CCC GB4943.1 is listed for PD-25A.
Withstand voltage
Input–output 3 kVAC; input–FG 2 kVAC; output–FG 0.5 kVAC.
Insulation resistance
Input–output, input–FG and output–FG: 100 MΩ at 500 VDC, 25°C and 70% RH.
Emission compliance
BS EN/EN55032 (CISPR32) Class B; BS EN/EN61000-3-2 and -3; EAC TP TC020; GB9254 Class B and GB17625.1.
Immunity compliance
BS EN/EN61000-4-2, -3, -4 and -5; BS EN/EN55035, light-industry level; EAC TP TC020.
This power supply is an installation component. EMC testing uses a 360 × 360 mm metal plate, 1 mm thick. Verify the final equipment against the applicable safety and EMC requirements with its actual mounting and wiring.
Weight, Reliability and Catalogue
Single-unit reference weight
150 g (0.15 kg), explicitly listed per unit in PACKING; not the carton weight.
Carton packing
96 pieces / 15.9 kg / 1.2 CUFT.
MTBF, minimum estimates
5363.3 thousand hours under Telcordia SR-332 (Bellcore); 707.6 thousand hours under MIL-HDBK-217F at 25°C.
Warranty
Two-year manufacturer warranty, subject to applicable terms.
Catalogue revision
PD-25-SPEC, 2024-10-30; combined PDF pages 1–2.
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