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Mean Well

Mean Well GST40A09-P1J Power Supply 40W 9V 4.45A

SKU GST40A09-P1J
$20.01 USD
Shipping calculated at checkout.

Select model — 7 in this family

GST40A09-P1J
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Overview

GST40A09-P1J is the 9V output model of this series: rated current 4.45A, typical efficiency 88.5%. Type P1J: Standard model,2.1 φ x5.5 φ x11mm,C+,tuning fork type.

GST40A is a highly reliable, 40W 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 90VAC 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 92% and the extremely low no-load power consumption below 0.075W,GST40A 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.GST40A 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

GST40A09-P1JSpecifications from the official datasheet (2026-04-03 edition)

OUTPUT

SAFETY MODEL NO.
GST40A09
DC VOLTAGENote.2
9V
RATED CURRENT
4.45A
CURRENT RANGE
0 ~ 4.45A
RATED POWER (max.)
40W
RIPPLE & NOISE (max.)Note.3
120mVp-p
VOLTAGE TOLERANCENote.4
±5.0%
LINE REGULATIONNote.5
±1.0%
LOAD REGULATION
±5.0%
SETUP, RISE TIMENote.6
1000ms, 50ms / 230VAC 1000ms, 50ms / 115VAC at full load
HOLD UP TIME (Typ.)
50ms / 230VAC 15ms / 115VAC at full load

INPUT

VOLTAGE RANGE
90 ~ 264VAC
FREQUENCY RANGE
47 ~ 63Hz
EFFICIENCY (Typ.)
88.5%
AC CURRENT (Typ.)
1A / 115VAC 0.5A / 230VAC
INRUSH CURRENT (max.)
Cold start 35A / 115AC 65A / 230VAC
LEAKAGE CURRENT(max.)
0.75mA / 240VAC

PROTECTION

OVERLOAD
105 ~ 150% rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE
9.4 ~ 12.2V Protection type : Shut down o/p voltage, re-power on to recover

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 (Note. 9)

SAFETY STANDARDSNote. 7
UL62368-1, CSA C22.2 No.62368-1, TUV BS EN//EN62368-1, BSMI CNS 15598-1 , 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: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
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 4, 15KV air; Level 4, 8KV 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 , 2KV/Line-FG
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
3493.6K hrs min. Telcordia SR-332 (Bellcore) ; 728.2K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
125*50*31.5mm (L*W*H)
PACKING
0.28Kg; 40pcs/12.02Kg/1.04CUFT

CONNECTOR

PLUG
See page 4~5 ; Other type available by customer requested
CABLE
See page 4~5 ; Other type available by customer requested

MODEL ENCODING

P1J (this model)
Standard model,2.1 φ x5.5 φ x11mm,C+,tuning fork type
Blank
Other options available by customer requested (see Page 4~5)
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. 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. 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).
  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

GST40A09-P1J Derating Curve
Derating Curve
GST40A09-P1J Mechanical Specification
Mechanical Specification
GST40A09-P1J DC output plug
DC output plug

Typical applications

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

Downloads

FAQ

Can I use the GST40A09-P1J to power a 9V embedded system or controller?

Yes, if the equipment requires constant 9V DC and the load stays within 4.45A. This unit is rated for 40W total output, making it suitable for 9V embedded systems within that range.

Is this 9V power supply suitable for industrial instruments or small automation devices?

It can be suitable for 9V instruments or automation devices that need a regulated constant-voltage source. The maximum output current is 4.45A, and the total output rating is 40W.

Can the GST40A09-P1J run a 9V OEM electronic product?

Yes, for OEM electronics designed for constant 9V input and drawing no more than 4.45A. It is intended for lower-power 9V applications that fit inside the 40W output capacity.

Will this model support international AC input for portable service or lab setups?

Yes, the input range is 90-264VAC. That allows the same power supply to operate across a broad range of standard AC mains voltages.

Is the GST40A09-P1J suitable for outdoor deployment?

The stated operating temperature range is -30°C to +70°C, which covers a wide operating span. However, no IP rating appears in the provided specs, so outdoor suitability is not established by the listed data.

Payment & Security

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Mean Well GST40A09-P1J Power Supply 40W 9V 4.45A
Mean Well

Mean Well GST40A09-P1J Power Supply 40W 9V 4.45A

$20.01 USD

GST40A09-P1J is the 9V output model of this series: rated current 4.45A, typical efficiency 88.5%. Type P1J: Standard model,2.1 φ x5.5 φ x11mm,C+,tuning fork type.

GST40A is a highly reliable, 40W 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 90VAC 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 92% and the extremely low no-load power consumption below 0.075W,GST40A 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.GST40A 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

Typical applications

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

Model

  • 18W 9V 2 Pole
  • 18W 9V 3 Pole
  • 23W 9V 2 Pole
  • 23W 9V 3 Pole
  • 28W 9V 2 Pole
  • 40W 9V 3 Pole
  • 54W 9V 3 Pole
View product

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