At a glance
- Output Voltage
- 12 V
- Rated Output Current
- 3.75 A
- Rated Output Power
- 45 W
- Efficiency (typ.)
- 82%
- Operating Temperature
- -10 to +60 °C,20 to 90%RH non-condensing
- Input Voltage Range
- 18 to 36 V DC
MEAN WELL PSD-45B-12 DC-DC Converter Module, 12 V, 3.75 A, 45 W
Price on request
At a glance
- Output Voltage
- 12 V
- Rated Output Current
- 3.75 A
- Rated Output Power
- 45 W
- Efficiency (typ.)
- 82%
- Operating Temperature
- -10 to +60 °C,20 to 90%RH non-condensing
- Input Voltage Range
- 18 to 36 V DC
A DC-DC converter built into equipment to turn a battery or other DC supply into a regulated DC output. 45 W DC-DC converter module with a 12 V DC output rated at 3.75 A.
Part of the MEAN WELL PSD-45 series. Compare all 5 models
Include the required quantity and configuration in your quote request. Price and availability will be confirmed in the quotation.
- WarrantyManufacturer warranty under MEAN WELL's terms: 2 years. Warranty claims
- DeliveryPrice, availability and delivery charges are confirmed in your quotation. Shipping and delivery
Overview
What it is
The MEAN WELL PSD-45B-12 is a 45 W DC-DC converter module from the PSD-45 series (45 W DC-DC Single Output Switching Power Supply). It provides a 12 V DC output with up to 3.75 A of rated current.
What it is used for
DC-DC converter modules mount on a circuit board to produce an isolated or regulated rail from a DC input.
Key Specifications
- Output: 12 V, 3.75 A rated current, 45 W rated power.
- Typical efficiency: 82%.
- Operating temperature: -10 to +60 °C (Refer to output load derating curve),20 to 90%RH non-condensing.
- Dimensions: 127 x 76 x 30 mm (L x W x H).
Buying considerations
Choose a rated current with headroom above the total load of the connected devices, and check the derating curve in the datasheet if the supply will run hot or at low input voltage. Other output voltages and power ratings in the same series are listed on this page.
Installation considerations
MEAN WELL treats this unit as a component to be installed inside final equipment, so approvals and EMC performance should be confirmed for the complete installation. Wiring, safety and EMC details are in the official datasheet linked below.
Features

Size and fit
- Dimensions
- 127 x 76 x 30 mm (L x W x H)
- Weight
- 0.19 kg
- Mounting
- PCB Mount
Technical specifications
Key facts
- What is it?
- DC/DC ConvertersBrand MEAN WELL, model PSD-45B-12
- What does it output?
- 12 V, 3.75 A, 45 W
- What input does it accept?
- 18 to 36 V DC
- How does it mount?
- PCB Mount
- Which documents are available?
- Datasheet, certificate Open documents
RelatedSeriesMEAN WELL PSD-45 series, 5 modelsDocumentsAll MEAN WELL documents
Output
- Output Voltage
- 12 V
- Rated Output Current
- 3.75 A
- Output Current Range
- 0 to 3.75 A
- Rated Output Power
- 45 W
- Efficiency (typ.)
- 82%
- Hold Up Time (typ.)
- 1000 ms, 50 ms, ----/12 V DC/24 V DC at full load; 1500 ms,50 ms,----48 V DC at full load
Protection
- Withstand Voltage
- I/P-O/P: 1.5 kV AC, I/P-FG: 2.0 kV AC, O/P-FG: 0.5 kV AC
Environment
- Operating Temperature
- -10 to +60 °C (Refer to output load derating curve),20 to 90%RH non-condensing
- Operating Humidity
- 20 to 95% RH non-condensing
Physical
- Dimensions
- 127 x 76 x 30 mm (L x W x H)
- Weight
- 0.19 kg
- Mounting
- PCB Mount
Approvals
- MTBF
- 3067.4K hrs min. Telcordia SR-332 (Bellcore)
Other
- Series
- PSD-45
- Input Voltage Range
- 18 to 36 V DC (24 V DC nominal)
- Warranty
- Manufacturer warranty under MEAN WELL's terms: 2 years. How claims work
Product attributes and shipping details
| Brand | MEAN WELL |
|---|---|
| Power Output | 45 W |
Downloads
Documentation
- PSD-45 series datasheetDatasheet · Family · meanwell.comDownload
Certificate and compliance document (1)
- PSD-45 CE declaration of conformityCertificate · Family · meanwell.comDownload
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