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Mean Well GST25A05-P1J Power Supply 20W 5V 4A

SKU GST25A05-P1J

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Overview

GST25A05-P1J is the 5V output model of this series: rated current 4.0A, typical efficiency 81.5%.

GST25A is a highly reliable, 25W desktop style single-output green adaptor series. This product is a classⅠ power unit (with FG), equipped with a standard IEC320-C14 AC inlet and adopting the input range from 85VAC to 264VAC. The entire series supplies different models with output voltages ranging between 5VDC and 48VDC that can satisfy the demands for various types of consumer electronic devices. With the efficiency up to 89% and the extremely low no-load power consumption below 0.075W, GST25A is compliant with USA EISA 2007/DoE, Canada NRCan, Australia and New Zealand MEPS, Korea K-MEPS, EU ErP,and Code of Conduct(CoC) Version 5. The supreme 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.GST25A is certified for the international safety regulations.

Features

Global certificates
Universal AC input / Full range
3 pole AC inlet IEC320-C14,ClassⅠpower unit
No load power consumption< 0.075W
Energy efficiency Level Ⅵ
Comply with EISA 2007/DoE,NRCan,Korea K-MEPS, AU/NZ MEPS,EU ErP and CoC Version 5
Protections: Short circuit / Overload / Over voltage
Fully enclosed plastic case
Pass LPS
-30~+70℃ wide range working temperature
LED indicator for power on
Various DC plug quick adaptor accessory available (Plug kit sold sperately, please refer to : https://www.meanwell.com/upload/pdf/DC_plug.pdf)
3 years warranty

Specifications

GST25A05-P1JSpecifications from the official datasheet (2026-04-03 edition)

OUTPUT

SAFETY MODEL NO.: GST25A05
DC VOLTAGE^Note.2: 5V
RATED CURRENT: 4.0A
CURRENT RANGE: 0 ~ 4.0A
RATED POWER (max.): 20W
RIPPLE & NOISE (max.)^Note.3: 80mVp-p
VOLTAGE TOLERANCE^Note.4: ±5.0%
LINE REGULATION^Note.5: ±1.0%
LOAD REGULATION^Note.6: ±5.0%
SETUP, RISE, HOLD UP TIME: 1000ms, 30ms, 50ms/230VAC 1500ms, 30ms, 15ms/115VAC at full load

INPUT

VOLTAGE RANGE^Note.7: 85 ~ 264VAC
FREQUENCY RANGE: 47 ~ 63Hz
EFFICIENCY (Typ.): 81.5%
AC CURRENT: 0.6A / 115VAC 0.35A / 230VAC
INRUSH CURRENT (max.): Cold start 35A / 115VAC 65A / 230VAC
LEAKAGE CURRENT(max.): 0.75mA / 240VAC

PROTECTION

OVERLOAD: 110 ~ 150% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE: 110 ~ 140% rated output voltage Protection type : Clamp by zener diode

ENVIRONMENT

WORKING TEMP.: -30 ~ +70℃ (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 ~ 50℃)
VIBRATION: 10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS^{Note. 8}: UL62368-1, CSA C22.2 No.62368-1, TUV BS EN/EN62368-1, BSMI CNS15598-1 , CCC GB4943.1, PSE J62368-1, AS/NZS 62368.1，BIS IS13252, KC K60950-1, EAC TP TC 004 approved
WITHSTAND VOLTAGE: I/P-O/P:4242VDC, I/P-FG:2121VDC
ISOLATION RESISTANCE: I/P-O/P, I/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION: Parameter Standard Test Level

Conducted emission BS EN/EN55032(CISPR32),FCC PART 15 / CISPR22 CAN ICES-3(B)/NMB-3(B),CNS15936,GB17625.1 EAC TP TC 020,MSIP KN32 Class B
Radiated emission BS EN/EN55032(CISPR32),FCC PART 15 / CISPR22 CAN ICES-3(B)/NMB-3(B),CNS15936,GB17625.1 EAC TP TC 020,MSIP KN32 Class B
Harmonic current BS EN/EN61000-3-2,GB9254 Class A
Voltage flicker BS EN/EN61000-3-3
EMC IMMUNITY: BS EN/EN55035

Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 3, 8KV air; Level 2, 4KV contact
RF field susceptibility BS EN/EN61000-4-3 Level 2, 3V/m
EFT bursts BS EN/EN61000-4-4 Level 2, 1KV
Surge susceptibility BS EN/EN61000-4-5 Level 3, 1KV/Line-Line , 2KV/Line-FG
Conducted susceptibility BS EN/EN61000-4-6 Level 2, 3V
Magnetic field immunity BS EN/EN61000-4-8 Level 2, 3A/m
Voltage dips , interruption BS EN/EN61000-4-11 ＞95% dip 0.5 periods, 30% dip 25 periods, ＞95% interruptions 250 periods

Parameter	Standard	Test Level
Conducted emission	BS EN/EN55032(CISPR32),FCC PART 15 / CISPR22 CAN ICES-3(B)/NMB-3(B),CNS15936,GB17625.1 EAC TP TC 020,MSIP KN32	Class B
Radiated emission	BS EN/EN55032(CISPR32),FCC PART 15 / CISPR22 CAN ICES-3(B)/NMB-3(B),CNS15936,GB17625.1 EAC TP TC 020,MSIP KN32	Class B
Harmonic current	BS EN/EN61000-3-2,GB9254	Class A
Voltage flicker	BS EN/EN61000-3-3

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 3, 8KV air; Level 2, 4KV contact
RF field susceptibility	BS EN/EN61000-4-3	Level 2, 3V/m
EFT bursts	BS EN/EN61000-4-4	Level 2, 1KV
Surge susceptibility	BS EN/EN61000-4-5	Level 3, 1KV/Line-Line , 2KV/Line-FG
Conducted susceptibility	BS EN/EN61000-4-6	Level 2, 3V
Magnetic field immunity	BS EN/EN61000-4-8	Level 2, 3A/m
Voltage dips , interruption	BS EN/EN61000-4-11	＞95% dip 0.5 periods, 30% dip 25 periods, ＞95% interruptions 250 periods

OTHERS

MTBF: 3879.7K hrs min. Telcordia SR-332 (Bellcore) ; 674.6K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 93*54*36mm (L*W*H)
PACKING: 209g; 60pcs/13.5Kg/1.02CUFT

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.All parameters are specified at 230VAC input, rated load, 25℃ 70% RH ambient.
2.DC voltage: The output voltage set at point measure by plug terminal & 50% load.
3.Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1μF & 47μF capacitor.
4.Tolerance: includes set up tolerance, line regulation, load regulation.
5.Line regulation is measured from low line to high line at rated load.
6.Load regulation is measured from 10% to 100% rated load.
7.Derating may be needed under low input voltage. Please check the derating curve for more details.
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

GST25A05-P1J Derating Curve — Derating Curve

GST25A05-P1J Mechanical Specification — Mechanical Specification

GST25A05-P1J DC output plug — DC output plug

GST25A05-P1J G S T 2 5 A series — G S T 2 5 A series

Typical applications

Consumer electronic devices
Telecommunication devices
Office facilities
Industrial equipments

Downloads

Datasheet1

GST25A05-P1J datasheetGST25A-SPEC.PDF · 2026-04-03 edition PDF Download

Certificates10

UL Certificate (GST25A)(EN) PDF Download

CB Certificate (GST25A)(EN) PDF Download

TUV Certificate (GST25A)(EN) PDF Download

EMC Certificate (GST25A)(EN) PDF Download

FCC Certificate (GST25A)(EN) PDF Download

NRCAN Certificate (GST25A)(EN) PDF Download

ERP Certificate (GST25A)(EN) PDF Download

CCC Certificate (GST25A)(CN) PDF Download

RCM Certificate (GST25A)(EN) PDF Download

PSE Certificate (GST25A)(EN) PDF Download

Test reports1

Test Report (GST25A05)(EN) PDF Download

Catalogues2

Mean Well Adaptor Catalog PDF Download

Mean Well Catalog (Industrial) PDF Download

FAQ

Can I use the GST25A05-P1J for a 5V single-board computer or embedded controller?

Yes, this model provides constant 5V output up to 4A, with 20W total power. It suits 5V embedded electronics that need more current headroom than lower-current adapters.

Is the GST25A05-P1J suitable for industrial 5V logic devices or interface hardware?

It can be a fit for 5V DC logic, interface, or compact control equipment that requires constant voltage and stays within 4A. The main sizing check is keeping total load at or below 20W.

Can this 5V power supply run peripherals or processing devices with higher 5V current demand?

Yes, compared with very small 5V adapters, this unit offers up to 4A output current. That makes it suitable for 5V electronics that need a stronger regulated supply but still remain within 20W.

Is the GST25A05-P1J appropriate for indoor industrial environments?

The specified operating temperature range is -30°C to +70°C, which supports use in a wide range of indoor conditions. The provided specs do not show an IP rating, so it is better suited to protected installations than exposed outdoor use.

Can I use this adapter on different AC input voltages worldwide?

Yes, the input range is 85-264VAC. That wide-range input is useful when the same 5V product may be used across multiple regions or facility power standards.

Payment & Security

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