Fall Savings: 30% off select MEAN WELL models · Auto-applied in cart.  Shop Now

Free US Shipping over $200Ships from CA · TX · MAWholesale & Trade AccountContact

Over 15 years experience of providing support of MEAN WELL Power Supplies

Image shown is a representation only. Exact specifications should be obtained from the product datasheet.

Mean Well GST25B18-P1J Power Supply 25W 18V 1.38A

SKU GST25B18-P1J
$16.54 USD
Shipping calculated at checkout.
Model

Select model — 6 in this family

GST25B18-P1J
|

Your order will be processed within 24 hours


Overview

GST25B18-P1J is the 18V output model of this series: rated current 1.38A, typical efficiency 87%.

GST25B is a highly reliable, 25W desktop style single-output green adaptor series. This product is a classⅡ power unit (no FG), equipped with a standard IEC320-C8 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,GST25B 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, providing the double insulation that effectively prevents electrical shock. GST25B is certified for the international safety regulations.

Features

  • Global certificates
  • Universal AC input / Full range
  • 2 pole AC inlet IEC320-C8,Class Ⅱ power 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

GST25B18-P1JSpecifications from the official datasheet (2026-04-03 edition)

OUTPUT

SAFETY MODEL NO.
GST25B18
DC VOLTAGENote.2
18V
RATED CURRENT
1.38A
CURRENT RANGE
0 ~ 1.38A
RATED POWER (max.)
25W
RIPPLE & NOISE (max.)Note.3
100mVp-p
VOLTAGE TOLERANCENote.4
±3.0%
LINE REGULATIONNote.5
±1.0%
LOAD REGULATIONNote.6
±3.0%
SETUP, RISE, HOLD UP TIME
1000ms, 30ms, 50ms/230VAC 1500ms, 30ms, 15ms/115VAC at full load

INPUT

VOLTAGE RANGENote.7
85 ~ 264VAC
FREQUENCY RANGE
47 ~ 63Hz
EFFICIENCY (Typ.)
87%
AC CURRENT
0.6A / 115VAC 0.35A / 230VAC
INRUSH CURRENT (max.)
Cold start 35A / 115VAC 65A / 230VAC
LEAKAGE CURRENT(max.)
0.25mA / 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 STANDARDSNote. 8
UL62368-1, CSA C22.2 No. 62368-1, TUV BS EN/EN62368-1, BSMI CNS15598-1, CCC GB4943.1,AS/NZS 62368.1,PSE J62368-1 , BIS IS13252, KC K60950-1, EAC TP TC 004 approved
WITHSTAND VOLTAGE
I/P-O/P:4242VDC
ISOLATION RESISTANCE
I/P-O/P:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
ParameterStandardTest Level
Conducted emissionBS EN/EN55032(CISPR32),FCC PART 15 / CISPR22 CAN ICES-3(B)/NMB-3(B),CNS15936,GB17625.1 EAC TP TC 020,MSIP KN32Class B
Radiated emissionBS EN/EN55032(CISPR32),FCC PART 15 / CISPR22 CAN ICES-3(B)/NMB-3(B),CNS15936,GB17625.1 EAC TP TC 020,MSIP KN32Class B
Harmonic currentBS EN/EN61000-3-2,GB9254Class A
Voltage flickerBS EN/EN61000-3-3
EMC IMMUNITY

BS EN/EN55035

ParameterStandardTest Level
ESDBS EN/EN61000-4-2Level 3, 8KV air; Level 2, 4KV contact
RF field susceptibilityBS EN/EN61000-4-3Level 2, 3V/m
EFT burstsBS EN/EN61000-4-4Level 2, 1KV
Surge susceptibilityBS EN/EN61000-4-5Level 3, 1KV/Line-Line
Conducted susceptibilityBS EN/EN61000-4-6Level 2, 3V
Magnetic field immunityBS EN/EN61000-4-8Level 2, 3A/m
Voltage dips , interruptionBS 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
79*54*33mm (L*W*H)
PACKING
191.5g; 60pcs/12.5Kg/1.15CUFT

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 230VAC 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.Load regulation is measured from 10% to 100% rated load.
  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

GST25B18-P1J Derating Curve
Derating Curve
GST25B18-P1J Mechanical Specification
Mechanical Specification
GST25B18-P1J DC output plug
DC output plug
GST25B18-P1J G S T 2 5 B series
G S T 2 5 B series

Typical applications

  • Consumer electronic devices
  • Telecommunication devices
  • Office facilities
  • Industrial equipments

Downloads

FAQ

Can I use the GST25B18-P1J for 18V industrial control or monitoring equipment?

It can be used for 18V industrial equipment that requires constant 18V DC and draws up to 1.38A. With a 25W rating, it is better suited to lower-power control and monitoring loads than to heavier 18V devices.

Is this model suitable for 18V embedded electronics or OEM assemblies?

Yes, if the assembly is designed for a regulated 18V constant-voltage input and remains within 25W. Matching both the 18V output and 1.38A current limit is important for a proper fit.

Would the GST25B18-P1J work for 18V instrumentation or communications hardware?

It can work for 18V instrumentation or communications hardware when the device specifies 18V DC input and does not exceed 1.38A. The universal 85-264VAC input range adds flexibility for different AC supply environments.

Can this power supply be used for 18V automation accessories inside equipment?

It can be used for 18V automation accessories inside equipment if the load is within the 25W output rating. Its constant-voltage operation makes it suitable for fixed-voltage electronic loads rather than current-driven loads.

Is the GST25B18-P1J suitable for exposed outdoor conditions?

The operating temperature range is -30C to +70C, which supports a broad thermal range. However, the supplied specs do not list an IP rating, so exposed outdoor suitability cannot be established from the available data.

Payment & Security

Payment methods

  • Amazon
  • American Express
  • Apple Pay
  • Bancontact
  • Bizum
  • Diners Club
  • Discover
  • Google Pay
  • iDEAL Wero
  • Mastercard
  • PayPal
  • Satispay
  • Shop Pay
  • USDC
  • Venmo
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Other GST25 Models

5 other models
ModelPower Voltage Current IP RatingPrice
Mean Well GST25A05-P1J Power Supply 20W 5V 4A 20W 5V 4A IP20$16.47 View
Mean Well GST25B24-P1J Power Supply 25W 24V 1.04A 25W 24V 1.04A IP20$16.54 View
Mean Well GST25B07-P1J Power Supply 22W 7.5V 2.93A 22W 7.5V 2.93A IP20$16.54 View
Mean Well GST25A15-P1JPower Supply 25W 15V 1.66A 25W 15V 1.66A IP20$16.47 View
Mean Well GST25A12-P1J Power Supply 25W 12V 2.08A 25W 12V 2.08A IP20$15.57 View
Mean Well GST Series Power Supply 18V(15~30W) -  - powersupplymall.com
Mean Well

Mean Well GST25B18-P1J Power Supply 25W 18V 1.38A

$16.54 USD

GST25B18-P1J is the 18V output model of this series: rated current 1.38A, typical efficiency 87%.

GST25B is a highly reliable, 25W desktop style single-output green adaptor series. This product is a classⅡ power unit (no FG), equipped with a standard IEC320-C8 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,GST25B 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, providing the double insulation that effectively prevents electrical shock. GST25B is certified for the international safety regulations.

Features

  • Global certificates
  • Universal AC input / Full range
  • 2 pole AC inlet IEC320-C8,Class Ⅱ power 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

Typical applications

  • Consumer electronic devices
  • Telecommunication devices
  • Office facilities
  • Industrial equipments

Model

  • 18W 18V 2 Pole
  • 18W 18V 3 Pole
  • 25W 18V 2 Pole
  • 25W 18V 3 Pole
  • 40W 18V 3 Pole
  • 60W 18V 3 Pole
View product