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Mean Well PT-45B Power Supply 45W 5V 12V -12V 3A
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
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. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
- 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. Tolerance : includes set up tolerance, line regulation and load regulation.
- 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. Mounting holes M1 and M2 should be grounded for EMI purposes.
- 6. Heat Sink HS1,HS2 can not be shorted.
- 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
Downloads
Certificates8
Test reports1
Catalogues1
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.
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Other PT Series Models
7 other models| Model | Power | Voltage | Current | IP Rating | Price | |
|---|---|---|---|---|---|---|
| Mean Well PT-65C Power Supply 65W 5V 15V -15V 5.5A | 65W | 5V | 5.5A | IP20 | $20.75 | View |
| Mean Well PT-65D Power Supply 65W 5V 12V 24V 4A | 68W | 5V | 4A | IP20 | $20.75 | View |
| Mean Well PT-65B Power Supply 65W 5V 12V -12V 5.5A | 63.5W | 5V | 5.5A | IP20 | $20.75 | View |
| Mean Well PT-65A Power Supply 65W 5V 12V -5V 5.5A | 60W | 5V | 5.5A | IP20 | $20.75 | View |
| Mean Well PT-6503 Power Supply 65W 5V 5V 12V 6A | 61.8W | 5V | 6A | IP20 | $26.60 | View |
| Mean Well PT-45C Power Supply 45W 5V 15V -15V 3A | 43.5W | 5V | 3A | IP20 | $19.10 | View |
| Mean Well PT-45A Power Supply 45W 5V 12V -5V 3A | 40.5W | 5V | 3A | IP20 | $19.13 | View |
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