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Mean Well

Mean Well GSM25U05-P1J Power Supply 20W 5V 4A

SKU GSM25U05-P1J
$18.54 USD
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GSM25U05-P1J
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Overview

GSM25U05-P1J is the 5V output model of this series: rated current 4A, typical efficiency 80%.

GSM25U is a highly reliable, 25W wall-mounted style single-output green medical adaptor series. This product is equipped with a 2-pin (no FG) standard USA AC power plug, adopting the input range from 80VAC to 264VAC. The entire series supplies different output voltages between 5VDC and 48VDC that can satisfy the demands for various kinds of miniaturize medical devices. The circuitry design meets the international medical standards (2×MOPP), having an ultra low leakage current (<50 μA), fitting the medical devices in direct electrical contact with the patients. With the efficiency up to 88% and the extreme low no-load power consumption below 0.1W, GSM25U is compliant with USA EISA 2007/DoE and Canada NRCan; the superme feature allows the adaptor to save the energy when it is either under the operating mode or the standby mode. The entire series utilizes the 94V-0 flame retardant plastic case, providing the double insulation that effectively prevents electrical shock. GSM25U is approved with the international medical safety certificates.

Features

  • 2 pole USA plug, Class Ⅱ power unit
  • Medical safety approved (2×MOPP) according to ANSI/AAMI ES60601-1/-1-11
  • Extremely low leakage current
  • No load power consumption<0.1W
  • Energy efficiency Level Ⅵ ( except 5~9V for Level Ⅴ)
  • -25~+60℃ wide range working temperature
  • Protections: Short circuit / Overload / Over voltage
  • LED indicator for power on
  • Various DC plug quick adapter accessory available (Plug kit sold sperately, please refer to : https://www.meanwell.com/upload/pdf/DC_plug.pdf)
  • 3 years warranty

Specifications

GSM25U05-P1JSpecifications from the official datasheet (2026-04-03 edition)

OUTPUT

SAFETY MODEL NO.
GSM25U05
DC VOLTAGENote.2
5V
RATED CURRENT
4A
CURRENT RANGE
0 ~ 4A
RATED POWER (max.)
20W
RIPPLE & NOISE (max.)Note.3
60mVp-p
VOLTAGE TOLERANCENote.4
±6.0%
LINE REGULATIONNote.5
±1.0%
LOAD REGULATION
±6.0%
SETUP, RISE TIMENote.6
500ms, 30ms / 230VAC 1000ms, 30ms / 115VAC at full load
HOLD UP TIME (Typ.)
16ms / 230VAC 16ms / 115VAC at full load

INPUT

VOLTAGE RANGENote.7
80 ~ 264VAC 113 ~ 370VDC
FREQUENCY RANGE
47 ~ 63Hz
EFFICIENCY (Typ.)
80%
AC CURRENT (Typ.)
0.7A / 115VAC 0.35A / 230VAC
INRUSH CURRENT (Typ.)
55A / 230VAC 30A / 115VAC
LEAKAGE CURRENT(max.)
Touch current < 50μA/264VAC

PROTECTION

OVERLOAD
105 ~ 170% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE
5.25 ~ 7.5V Protection type : Shut down o/p voltage, re-power on to recover

ENVIRONMENT

WORKING TEMP.
-25 ~ +60℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20% ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-40 ~ +85℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT
±0.03% / ℃ (0~40℃)
VIBRATION
10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC (Note. 8)

SAFETY STANDARDS
IEC 60601-1:2005+A1+A2; IEC 60601-1-11:2015+A1, ANSI/AAMI ES60601-1:2005+A2; ANSI/AAMI HA60601-1-11+A1 CAN/CSA C22.2 No. 60601-1:2014+A2; CSA C22.2 NO. 60601-1-11:2015+A1, EAC TP TC 004 approved
ISOLATION LEVEL
Primary-Secondary: 2xMOPP
WITHSTAND VOLTAGE
I/P-O/P:4KVAC
ISOLATION RESISTANCE
I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
ParameterStandardTest Level
Conducted emissionFCC PART 15 / CISPR22Class B
Radiated emissionFCC PART 15 / CISPR22Class B

OTHERS

MTBF
3887.1K hrs min. Telcordia SR-332 (Bellcore) ; 791.9K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
79*54*33mm (L*W*H)
PACKING
215g ; 60pcs / 13.9Kg / CARTON

CONNECTOR

PLUG
See page 4~5 ; Other type available by customer requested
CABLE
See page 4~5 ; Other type available by customer requested
Test conditions and notes8
  1. 1. All parameters are specified at 115VAC input, rated load, 25℃ 70% RH ambient.
  2. 2. DC voltage: The output voltage set at point measure by plug terminal & 50% load.
  3. 3. Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1μF & 47μF capacitor.
  4. 4. Tolerance: includes set up tolerance, line regulation, load regulation.
  5. 5. Line regulation is measured from low line to high line at rated load.
  6. 6. Length of set up time is measured at first cold start. Turning ON/OFF the power supply may lead to increase of the set up time.
  7. 7. Derating may be needed under low input voltage. Please check the derating curve for more details.
  8. 8. The power supply is considered as an independent unit, but the final equipment still need to re-confirm that the whole system complies with the 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 )

Technical drawings

GSM25U05-P1J Derating Curve
Derating Curve
GSM25U05-P1J Mechanical Specification
Mechanical Specification
GSM25U05-P1J DC output plug
DC output plug
GSM25U05-P1J G S M 2 5 U series
G S M 2 5 U series

Typical applications

  • Blood glucose meter
  • Blood pressure meter
  • Nebulizer
  • Inhaler
  • Portable medical device

Downloads

FAQ

Can I use the GSM25U05-P1J for a 5V embedded computer or controller?

Yes, this is a constant-voltage 5V supply rated for 20W and up to 4A, which suits many embedded computers, controller boards, and logic-level devices designed for 5V DC input. The key check is that the full system load stays within that 4A limit.

Is this 5V power supply suitable for industrial USB-powered or logic-level electronics?

It can be suitable for 5V logic electronics, embedded peripherals, or control hardware that requires a regulated 5V source and no more than 20W total. Note that the output is a P1J DC barrel plug (5.5/2.1mm), not a USB connector, and it is intended for equipment that expects a fixed 5V input.

Can I use this model for a compact HMI accessory or small automation interface that runs on 5V?

Yes, if the accessory is specified for 5V DC and the total current draw does not exceed 4A. That makes it more appropriate for compact 5V interfaces and embedded accessories than for larger 5V systems with heavier loads.

How do I size a 5V load for the GSM25U05-P1J?

This unit can deliver up to 4A at 5V, with a total output of 20W. If your device or combined load needs more than 4A or more than 20W, you need a higher-capacity 5V supply.

Can this 5V adapter be used in cold or warm operating areas?

The specified operating temperature is -25°C to +60°C, so it covers a broad range of indoor operating conditions. The product data shown does not include an IP rating, so there is no basis here to treat it as outdoor-rated or sealed against water and dust.

Payment & Security

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Mean Well GSM25U05-P1J Power Supply 20W 5V 4A
Mean Well

Mean Well GSM25U05-P1J Power Supply 20W 5V 4A

$18.54 USD

GSM25U05-P1J is the 5V output model of this series: rated current 4A, typical efficiency 80%.

GSM25U is a highly reliable, 25W wall-mounted style single-output green medical adaptor series. This product is equipped with a 2-pin (no FG) standard USA AC power plug, adopting the input range from 80VAC to 264VAC. The entire series supplies different output voltages between 5VDC and 48VDC that can satisfy the demands for various kinds of miniaturize medical devices. The circuitry design meets the international medical standards (2×MOPP), having an ultra low leakage current (<50 μA), fitting the medical devices in direct electrical contact with the patients. With the efficiency up to 88% and the extreme low no-load power consumption below 0.1W, GSM25U is compliant with USA EISA 2007/DoE and Canada NRCan; the superme feature allows the adaptor to save the energy when it is either under the operating mode or the standby mode. The entire series utilizes the 94V-0 flame retardant plastic case, providing the double insulation that effectively prevents electrical shock. GSM25U is approved with the international medical safety certificates.

Features

  • 2 pole USA plug, Class Ⅱ power unit
  • Medical safety approved (2×MOPP) according to ANSI/AAMI ES60601-1/-1-11
  • Extremely low leakage current
  • No load power consumption<0.1W
  • Energy efficiency Level Ⅵ ( except 5~9V for Level Ⅴ)
  • -25~+60℃ wide range working temperature
  • Protections: Short circuit / Overload / Over voltage
  • LED indicator for power on
  • Various DC plug quick adapter accessory available (Plug kit sold sperately, please refer to : https://www.meanwell.com/upload/pdf/DC_plug.pdf)
  • 3 years warranty

Typical applications

  • Blood glucose meter
  • Blood pressure meter
  • Nebulizer
  • Inhaler
  • Portable medical device

Model

  • 6W 5V Europe
  • 6W 5V USA
  • 12W 5V
  • 12W 5V USA
  • 15W 5V Europe
  • 15W 5V USA
  • 20W 5V USA
  • 22.5W 5V Europe
  • 22.5W 5V USA
  • 30W 5V Europe
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