☎ (888) 228 9138

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

Mean Well PT-45B Power Supply 45W 5V 12V -12V 3A

low leakage current < 0.5mAsmall and compact
SKU PT-45B
$21.22 USD
Shipping calculated at checkout.
In stock
|

Overview

PT-45B is the 5V 12V -12V output model of this series: rated current 3A 2A 0.3A, rated power 42.6W, typical efficiency 75%.

Features

  • Universal AC input/Full range
  • Low leakage current<0.5mA
  • Protections: Short circuit / Overload / Over voltage
  • Cooling by free air convection
  • 100% full load burn-in test
  • Fixed switching frequency at 65KHz
  • 2 years warranty

Specifications

PT-45BSpecifications from the official datasheet (2024-10-30 edition)

OUTPUT

OUTPUT NUMBER
CH1 CH2 CH3
DC VOLTAGE
5V 12V -12V
RATED CURRENT
3A 2A 0.3A
CURRENT RANGE
0.4 ~ 5A 0.2 ~ 2.5A 0 ~ 0.5A
RATED POWER
42.6W
OUTPUT POWER (max.)
Rated output power for convection; 52W with 18CFM min. Forced air
RIPPLE & NOISE (max.)Note.2
50mVp-p 120mVp-p 100mVp-p
VOLTAGE ADJ. RANGE
CH1:4.75 ~ 5.5V
VOLTAGE TOLERANCENote.3
±4.0% ±7.0% ±5.0%
LINE REGULATION
±1.0% ±2.0% ±1.0%
LOAD REGULATION
±3.0% ±4.0% ±1.0%
SETUP, RISE TIME
800ms, 20ms at full load
HOLD UP TIME (Typ.)
60ms at full load

INPUT

VOLTAGE RANGE
90 ~ 264VAC 127 ~370VDC
FREQUENCY RANGE
47 ~ 440Hz
EFFICIENCY (Typ.)
75%
AC CURRENT (Typ.)
1A/115VAC 0.7A/230VAC
INRUSH CURRENT (Typ.)
COLD START 15A/115VAC 30A/230VAC
LEAKAGE CURRENT
<0.75mA

PROTECTION

OVERLOAD
53 ~ 75W rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed.
OVER VOLTAGE
CH1: 5.75 ~ 6.75VDC Protection type : Hiccup mode, recovers automatically after fault condition is removed.

ENVIRONMENT

WORKING TEMP.
-10 ~ +60℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-20 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT
±0.04%/℃ (0 ~ 50℃) on +5V output
VIBRATION
10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS
UL62368-1, TUV BS EN/EN62368-1, EAC TP TC 004 approved
WITHSTAND VOLTAGE
I/P-O/P:3KVAC I/P-FG:2KVAC O/P-FG:0.5KVAC 1min.
ISOLATION RESISTANCE
I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
Compliance to BS EN/EN55032 (CISPR32) Class B, BS EN/EN61000-3-2,-3, EAC TP TC 020
EMC IMMUNITY
Compliance to BS EN/EN61000-4-2,3,4,5,6,8,11, BS EN/EN55035, light industry level, EAC TP TC 020

OTHERS

MTBF
3291.3K hrs min. Telcordia SR-332 (Bellcore) ; 456.9K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
127*76*28mm (L*W*H)
PACKING
0.21Kg; 72pcs/17Kg/1.28CUFT
Test conditions and notes7
  1. 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
  2. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μF & 47μF parallel capacitor.
  3. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets 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 )
  5. 5. Mounting holes M1 and M2 should be grounded for EMI purposes.
  6. 6. Heat Sink HS1,HS2 can not be shorted.
  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).

Technical drawings

PT-45B Mechanical Specification
Mechanical Specification
PT-45B Block Diagram
Block Diagram
PT-45B Derating Curve
Derating Curve

Downloads

FAQ

Can I use the PT-45B for a 5V digital control board that also needs +12V and -12V rails?

The PT-45B is a constant voltage model with a 5V output rated at 3A and a total power rating of 42.6W. Its product configuration includes 5V, 12V, and -12V rails, which matches mixed-signal or control systems built around those voltages.

Is the PT-45B a fit for instrumentation or industrial interface hardware with bipolar analog stages?

It can be considered for equipment that combines 5V digital sections with +12V and -12V rails in the same power supply family. The listed 5V output is 3A, and the unit is rated for 42.6W total.

Can the PT-45B work in a compact embedded or IT chassis?

This supply is built in a small 127.0 x 76.0 x 28.0 mm form factor and weighs 0.21 kg. Those dimensions make it suitable where a 5V 3A, 42.6W power supply is needed in tighter enclosed equipment.

Is the PT-45B meant for indoor or outdoor equipment?

The specified operating range is -10°C to +60°C, and no IP rating is listed in the provided specs. That points to use in protected indoor equipment or inside an enclosure rather than direct outdoor exposure.

What are the main output differences between the PT-45B and its PT series siblings?

On the PT-45 sheet, PT-45A is 40.5W with 5V 3A, 12V 2A and -5V 0.3A outputs, and PT-45C is 43.5W with 5V 3A, 15V 1.6A and -15V 0.3A. PT-45B is rated at 42.6W with 5V 3A, 12V 2A and -12V 0.3A outputs, placing it between the other two; the main difference is its -12V third rail.

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bizum
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • MB WAY
  • PayPal
  • Satispay
  • Shop Pay
  • Visa

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

Other PT Series Models

50 other models
ModelPowerVoltageCurrent
Mean Well LRS-600-27 Power Supply 599W 27V 22.2A 599.4W 27V 22.2A View
Mean Well LRS-350-24 Power Supply — 350W 24V 14.6A 350.4W 24V 14.6A View
Mean Well LPV-60-12 LED Driver — 60W 12V 5A IP67 Waterproof 60W 12V 5A View
Mean Well HLG-120H-C350A Power Supply 150.5W 350mA - Adjustable 150.5W 430V 0.35A View
Mean Well QP-200-3A Power Supply 200W 5V 3.3V 12V -5V 15A 200W 5V 15A View
Mean Well GST25A12-P1J Power Supply 25W 12V 2.08A 25W 12V 2.08A View
Mean Well HLG-C Series LED Power Supply 350mA (70~150W) — — — View
Mean Well 201.6W High Reliable Multi-Industries Power Supply 24V 8.4A 201.6W 24V 8.4A View
Mean Well LPV-150-12 LED Driver — 120W 12V 10A IP67 Waterproof 120W 12V 10A View
Mean Well US AC Inlet plug for GE12/18/24 Series — — — View
Mean Well SP-100-7.5 Power Supply 100W 7.5V 13.5A 101.25W 7.5V 13.5A View
Mean Well RSP-150-27 Power Supply 150W 27V 5.6A 151.2W 27V 5.6A View
Mean Well RSD-30L-24 DC-DC Converter - 30W - 18~72V in 24V out 1.25A 30W 24V 1.25A View
Mean Well QP-320D Power Supply 320W 5V 12V 24V -12V 20A 316W 5V 20A View
Mean Well LPV-35-12 LED Driver — 36W 12V 3A IP67 Waterproof 36W 12V 3A View
Mean Well HLG-60H-24AB Power Supply 60W 24V - Adjustable and Dimmable 2.5A 60W 24V 2.5A View
Mean Well GSM36U12-P1J Power Supply 36W 12V 3A 36W 12V 3A View
Mean Well ESP-240-54 Desktop Power Supply or Charger 16A 216W 13.5V 4A View
Mean Well APC-16-350 Power Supply 16W 350mA 16.8W 48V 0.35A View
Mean Well HLG Series LED Power Supply 24V (40~150W) — — — View
Mean Well LPV Series LED Power Supply 24V (20~150W) — — — View
Mean Well GST18U07-P1J Power Supply 15W 7.5V 2A 15W 7.5V 2A View
Mean Well NGE18U09-P1J AC-DC Wall-mounted Green Adaptor - US Plug - 18W 9V 2A 18W 9V 2A View
Mean Well XLN-60-48-B LED Driver 60W 48V IP67, 3 in 1 Dimming 60W 48V 1.25A View
Mean Well GST120A20-P1M Desktop AC Adapters 120W 20V 6A Level VI 2.5x5.5plug 120W 20V 6A View
Mean Well ELN-60-12D LED Power Supply 60W 60W 12V 5A View
Mean Well ELN-30-12 LED Power Supplies 30W 12V 2.5A 30W 12V 2.5A View
Mean Well RSP-3000-24 Power Supply 3000W 24V 125A 3000W 24V 125A View
Mean Well WDR-60-24 Single Output Industrial Power Supply 60W 24V 2.5A - DIN Rail 60W 24V 2.5A View
Mean Well WDR-60-12 Single Output Industrial Power Supply 60W 12V 5A - DIN Rail 60W 12V 5A View
Mean Well WDR-240-48 Single Output Industrial Power Supply 240W 48V 5A - DIN Rail 240W 48V 5A View
Meanwell GS90A15-P1M Power Adaptor 6A 90W 15V 6A View
Meanwell ESP-120-27 Power Supply - 110W 27V 4A - Desktop 108W 13.5V 4A View
Mean Well XLG-200-12-AB Power Supply 192W 12V - Adjustable and Dimmable 16A 192W 12V 16A View
Mean Well UHP-1500-24 Power Supply 1500W 24V 62.5A 1500W 24V 62.5A View
Mean Well T-40C Switching Power Supply 3A 45W 5V 3A View
Mean Well T-120D Switching Power Supply 8A 118W 5V 8A View
Mean Well SE-600-12 Power Supply 600W 12V 50A 600W 12V 50A View
Mean Well SE-450-12 Power Supply 450W 12V 37.5A 450W 12V 37.5A View
Mean Well SE-100-48 Power Supply 100W 48V 110.4W 48V 2.3A View
Mean Well SCP-35-12 Power supply 35.9W 13.8V 2.6A 35.9W 13.8V 2.6A View
Mean Well RS-25-24 Power Supply 25W 24V 1.1A 26.4W 24V 1.1A View
Mean Well RS-150-24 Power Supply 150W 24V 6.5A 156W 24V 6.5A View
Mean Well RS-15-5 Power Supply 15W 5V 3A 15W 5V 3A View
Mean Well RS-15-12 Power Supply 15W 12V 1.3A 15.6W 12V 1.3A View
Mean Well RS-100-3.3 Power Supply 100W 3.3V 20A 66W 3.3V 20A View
Mean Well RPS-160-5 Green Power Supply 155W 5V 20A - Medical Power Supply 103W 5V 20A View
Mean Well RPB-1600-48 Battery Chargers 1600W 57.6V 27.5A - 3 Stage W/PFC 1600W 57.6V 27.5A View
Mean Well QP-200D Power Supply 200W 5V 12V 24V -12V 15A 203.4W 5V 15A View
Mean Well PS-45-13.5 PCB Switching Power Supply 44.55W 13.5V 3.3A View
{ "id":8656414605632, "variants" :[{ "context":"default", "variant_id": 46625610334528, "sku":"PT-45B", "inventory_qty" : 84, "customer" :true, "custom_html" :"\u003cdiv class=\"price\"\u003e\n \u003cdiv class=\"price__default\"\u003e\n \u003cstrong class=\"price__current\"\u003e$21.22\u003c\/strong\u003e\n \u003cs class=\"price__was\"\u003e\u003c\/s\u003e\n \u003c\/div\u003e\n\n \u003cdiv class=\"unit-price relative\" hidden\u003e\u003cspan class=\"visually-hidden\"\u003eUnit price\u003c\/span\u003e\u003cspan class=\"unit-price__price\"\u003e\u003c\/span\u003e\u003cspan class=\"unit-price__separator\"\u003e \/ \u003c\/span\u003e\u003cspan class=\"unit-price__unit\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\n \u003cdiv class=\"price__no-variant\" hidden\u003e\n \u003cstrong class=\"price__current\"\u003eUnavailable\u003c\/strong\u003e\n \u003c\/div\u003e\n\n \u003c\/div\u003e", "volume_html" :"\u003cvolume-pricing class=\"parent-display inside_product_form\" id=\"volume-pricing-main\" \u003e\u003c\/volume-pricing\u003e" } ] }
Mean Well PT-45B Power Supply 45W 5V 12V -12V 3A
Mean Well

Mean Well PT-45B Power Supply 45W 5V 12V -12V 3A

$21.22 USD

PT-45B is the 5V 12V -12V output model of this series: rated current 3A 2A 0.3A, rated power 42.6W, typical efficiency 75%.

Features

  • Universal AC input/Full range
  • Low leakage current<0.5mA
  • Protections: Short circuit / Overload / Over voltage
  • Cooling by free air convection
  • 100% full load burn-in test
  • Fixed switching frequency at 65KHz
  • 2 years warranty
View product

  • Call us

    (888) 228 9138

  • Email us

    contact@wellforces.com

  • Business Hours

    Mon-Fri
    EST 9:00am-5:30pm

  • Wholesale and Trade Account

    Let's grow together
Back to top