CFM20S120
20W open frame AC-DC power module with 12V output for industrial and embedded applications.
Product Overview
Description
The Cincon CFM20S120 is a 20W open frame AC-DC power module designed for industrial controls, embedded systems, and cost-sensitive applications. This module features universal input voltage range of 85-264VAC, automatically accommodating global mains voltages. The open frame design provides efficient convection cooling and reduces cost and weight compared to encapsulated modules, making it ideal for applications with adequate enclosure protection. The module outputs regulated 12VDC at up to 1660mA, suitable for industrial controllers, motors, relays, and 12V electronic systems. Key features include 3000VAC isolation voltage for safety, comprehensive protection including short circuit, overload, overvoltage, and over-temperature protection, and high efficiency of 83% to minimize heat generation. The CFM20S120 operates reliably across a temperature range of -25°C to +70°C with appropriate derating and airflow. With an MTBF of 250,000 hours and UL, CE, and CB certifications, this module offers reliable performance for industrial applications. The open frame design allows for easy integration into equipment enclosures where environmental protection is provided by the end product. As an authorized Cincon distributor, BeiLuo provides technical support for AC-DC power system design.
Product Series
CFM20S
Primary Application
Industrial control systems
Key Features
- 20W AC-DC conversion with universal input
- Regulated 12V output at 1.66A
- Open frame for convection cooling
- 3000VAC isolation for safety
- High efficiency 83% reduces heat
- Comprehensive protection: SCP, OLP, OVP, OTP
- Global safety certifications
- Cost-effective open frame design
- Compact size for 20W output
Specifications
| Input Voltage Range | 85-264VAC (universal) |
|---|---|
| Input Frequency | 47-63Hz |
| Output Voltage | 12VDC regulated |
| Output Current | 1660mA maximum |
| Output Power | 20W maximum |
| Efficiency | 83% typical at 230VAC, full load |
| Isolation Voltage | 3000VAC (input to output) |
| Isolation Resistance | 100MΩ minimum |
| Line Regulation | ±1% typical |
| Load Regulation | ±3% typical |
| Ripple and Noise | 150mVp-p maximum |
| Operating Temperature | -25°C to +70°C with derating |
| Storage Temperature | -40°C to +85°C |
| MTBF | 250,000 hours at 25°C (MIL-HDBK-217F) |
| Package | Open Frame (65 x 45 x 25 mm) |
| Weight | 40g typical |
| Safety Standards | UL62368-1, EN62368-1, CB |
| EMC Standards | EN55032 Class B, EN61000-4-2,3,4,5,6 |
Applications
Industrial control systems
Industrial automation and control
Motor drives and controls
Motor drive and control systems
Building automation
Industrial automation and control
Security systems
Electronic system design
Test and measurement
Data acquisition and conversion
Communication equipment
Communication and interface
LED lighting systems
Electronic system design
Embedded computers
Electronic system design
FAE Expert Insights
"The CFM20S120 is a solid choice for 20W industrial applications requiring 12V output. The open frame design keeps costs down while providing adequate cooling for most applications. I've used this module in industrial controls, building automation, and security systems with good results. The 83% efficiency is good for an open frame module in this power class. The over-temperature protection is a valuable feature that prevents damage from overheating. The universal input simplifies inventory - one SKU works worldwide. For industrial applications with proper enclosures, this module offers excellent value. Ensure adequate airflow or derate at high ambient temperatures. I recommend this module for cost-sensitive industrial applications where environmental protection is provided by the end equipment enclosure."
I highly recommend the CFM20S120 for its proven reliability.
— Senior FAE Team, BeiLuo
Frequently Asked Questions
What airflow is required for the CFM20S120?
The CFM20S120 open frame module requires adequate airflow for reliable operation at full power: Natural convection: Full power to 50°C ambient; 50% derating at 70°C; Forced airflow (200 LFM): Full power to 70°C ambient. For thermal design: Calculate power dissipation: Pd = 20W × (1/0.83 - 1) = 4.1W; Ensure ambient temperature plus temperature rise stays within ratings; Provide ventilation openings in enclosure; Consider heatsink for high ambient or restricted airflow. Temperature rise without airflow: approximately 35°C at full load, 25°C ambient. For reliable operation, keep component temperatures below 105°C (OTP threshold). The module includes over-temperature protection that shuts down at 105°C and restarts when cooled. Contact our FAE team for thermal analysis and airflow recommendations.
Provide 200 LFM airflow for full power to 70°C. Use natural convection with derating. Contact us for thermal design.
How do I mount the open frame CFM20S120?
The CFM20S120 open frame module can be mounted in several ways: PCB mounting: Through-hole pins solder to PCB; Provides electrical and mechanical connection; Allows component side or opposite side mounting. Chassis mounting: Use standoffs or mounting brackets; Connect pins with wires for flexible placement; Provides better vibration resistance. Orientation: Can be mounted in any orientation; Vertical mounting with airflow from bottom to top is optimal for cooling; Avoid mounting upside down if possible (components facing down). Clearance: Maintain 10mm minimum clearance on all sides for airflow; Keep away from heat-sensitive components; Ensure no conductive materials can contact exposed components. The module is designed for mounting inside equipment enclosures. For standalone applications, consider an optional enclosure. Refer to the datasheet for mounting dimensions and hole patterns.
Mount with PCB soldering or chassis brackets. Maintain clearance for airflow. Contact us for mounting recommendations.
What is the difference between open frame and enclosed AC-DC modules?
Open frame and enclosed modules differ in several aspects: Protection: Open frame exposes components - requires enclosure for safety and environmental protection; Enclosed modules have protective case - can be used standalone. Cooling: Open frame relies on convection/airflow - better heat dissipation in open air; Enclosed modules use conduction cooling through case - better for sealed environments. Cost: Open frame is less expensive - no enclosure cost; Enclosed modules cost more - includes case and assembly. Size: Open frame is more compact for given power; Enclosed modules are slightly larger due to case. Applications: Open frame for equipment with enclosures - industrial controls, embedded systems; Enclosed for standalone or harsh environments - outdoor, medical, portable. Electrical performance is similar between types. Choose open frame for cost-sensitive enclosed equipment. Choose enclosed for standalone or environmental protection needs.
Use open frame for enclosed equipment (lower cost). Use enclosed for standalone or harsh environments. Contact us for selection.
Can I adjust the output voltage of the CFM20S120?
The CFM20S120 has a fixed 12V output that cannot be adjusted. The output voltage is factory-set and regulated within ±3% tolerance. For applications requiring different voltage: Select a different model in the series (5V, 15V, 24V available); Use an external DC-DC converter to step up or down; Consider adjustable AC-DC supplies for variable requirements. The fixed output provides: Better regulation and stability; Simpler design - no trim pots to adjust; Lower cost - no adjustment circuitry; Higher reliability - fewer components. If your application requires tight voltage tolerance, the fixed output may be advantageous. For applications requiring voltage trimming (e.g., to compensate for cable drops), some models offer remote sense capability. Contact our FAE team if you need assistance with voltage selection or alternative solutions.
Output is fixed at 12V. Select different model for other voltages. Contact us for voltage requirements.
What is the remote ON/OFF function on the CFM20S120?
The CFM20S120 includes a remote ON/OFF control pin for external switching: Function: Logic high (>3V) or open = ON (normal operation); Logic low (<0.8V) or short to ground = OFF (standby). Electrical characteristics: Control pin internally pulled up; Can be driven by 3.3V or 5V logic; Sink current <1mA when pulled low. Applications: Microcontroller-controlled power sequencing; Sleep mode control for energy saving; Safety interlocks and emergency shutdown; Power sequencing in multi-rail systems. Standby power: <0.5W in OFF state; Input capacitors remain charged. The remote control allows intelligent power management without needing external relays or switches. For simple applications, leave the pin open for normal operation. For controlled applications, connect to microcontroller GPIO or switch. Refer to the datasheet for control pin specifications and recommended circuits.
Leave open for normal operation. Connect to logic for remote control. Contact us for control circuit design.