CFM40S120
Cincon CFM40S120 open-frame AC-DC supply, 40 W, universal 90-264 VAC input and a 12 V output at about 3.3 A with natural-convection cooling.
The CFM40S120 is a Cincon CFM40S series open-frame AC-DC power supply rated at 40 W with a universal input of about 90 V to 264 V AC and a single regulated 12 V output at up to about 3.34 A, in a compact 2x4 inch open-frame package. The universal input works across the world's mains, and the module reaches an efficiency of about 85 percent with a natural-convection cooling, an industry-standard pin-out and a continuous short-circuit protection. It meets the EN55032 Class B and the CISPR and FCC Class B emission standards and the IEC/EN/UL 62368-1 safety standard, and it operates over about 0 degrees to 70 degrees with the derating curve. The 2x4 inch open-frame format is a long-running industry standard, so the part fits a common board layout and suits a system where the supply is mounted inside the enclosure, and the covered and the PCB-mount options in the family suit a range of mechanical designs. Typical applications include industrial control, ITE and networking, test and measurement and a distributed power system. Every supply BeiLuo ships is factory-traceable and includes an import declaration, a certificate of origin and a RoHS compliance file. Our FAE team helps you choose the supply and plan the derating and the EMC.
FAE Professional Review
The CFM40S120 is a classic 40 W 12 V open-frame supply with a universal input and a 2x4 inch footprint, and it meets the Class B emissions on its own, so it is a simple, well-proven choice for an industrial or an ITE system. It cools by convection, so leave free air around the frame and confirm the derating at the ambient. The covered option helps where the enclosure must be tidy.
| Parameter | Value |
|---|---|
| Power | 40 W |
| Input | 90-264 VAC |
| Output | 12 V |
| Cooling | Convection |
| Package | Open frame 2x4 |
Application Circuits
Industrial control
Reference circuits and application schematics for Industrial control are available from our FAE team.
ITE and networking
Reference circuits and application schematics for ITE and networking are available from our FAE team.
Test and measurement
Reference circuits and application schematics for Test and measurement are available from our FAE team.
Need a reference schematic or design review? Our FAE engineers can share verified circuits and layout guidance for this part.
Related Documents
Alternative Part Numbers
Complementary Part Numbers
| Model | Package | Note | Action |
|---|---|---|---|
| EC7AW-24S05 | DIP-24 | Isolated DC-DC module for a downstream rail | View |
| EC3AW02 | DIP-24 | Small DC-DC module for an auxiliary rail | View |
Recommended Complementary Products
Frequently Asked Questions
What projects suit the CFM40S120?
It suits an industrial or an ITE system that needs a 12 V rail at 40 W in a compact open-frame form, with a universal input and Class B emissions on its own, mounted inside the enclosure.
Confirm the load and the derating.
How do I cool an open-frame supply?
An open-frame supply depends on the free air around it, so leave clearance and avoid a sealed pocket. Confirm the derating at the highest ambient and mount the unit where the air can move past it.
Our FAE team can review the thermal design.
Is the supply genuine and documented?
BeiLuo supplies factory-traceable CFM40S120 supplies with an import declaration, certificate of origin and RoHS file on every order. Stock is normally available and the datasheet downloads from this page.
Order a sample to validate the supply before volume production.