AC/DC Power Supplies

Cosel TECS20F Series Open Frame AC/DC Power Supply

When board space is the constraint, the Cosel TECS20F Series fits where larger supplies can't. It's a compact open-frame AC/DC power supply in a 1" x 2.3" footprint just 1.1mm-PCB thin, delivering up to 20W from a universal 85-264VAC input — one part valid on any mains worldwide. Despite the size, protection is built in: inrush current limiting,...

Read More

When board space is the constraint, the Cosel TECS20F Series fits where larger supplies can't. It's a compact open-frame AC/DC power supply in a 1" x 2.3" footprint just 1.1mm-PCB thin, delivering up to 20W from a universal 85-264VAC input — one part valid on any mains worldwide.

Despite the size, protection is built in: inrush current limiting, overcurrent protection and overvoltage protection are all on board, and the series is Class II rated, so no protective-earth connection is required. A harmonic attenuator brings IEC61000-3-2 compliance, and outputs of 5V, 12V, 15V and 24V cover the common rails.

H-option models add a higher peak-current rating for 12V and 24V outputs — useful for short motor or capacitive surges — while the -Y option adds an output-adjust potentiometer (±10%) and -N adds a protective cover. Manufactured with SMD technology and backed by a 5-year warranty.

Show Less
Unit Price
—
or send a quick enquiry about this product only
Cosel TECS20F-5 open-frame AC-DC power supply, 20W 5V output, board-level unit with capacitor and transformer.
Features
  • Universal 85-264VAC input keeps one part number valid worldwide
  • Output models in 5V, 12V, 15V and 24V
  • Up to 20W in a compact 1" x 2.3" open-frame footprint
  • Built-in inrush, overcurrent and overvoltage protection
  • Class II rated — no protective earth connection required
  • Harmonic attenuator for IEC61000-3-2 compliance
  • H-option peak-current and -Y voltage-adjust versions available
Downloads
Cosel_TECS20F_Series_Datasheet.pdf
Warranty & Returns

Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.

FAQs
The TECS20F is a 20W open-frame AC/DC power supply from Cosel's TECS F-series, suitable for PCB integration inside OEM equipment with low-power DC supply requirements.
Contact Powerbox for the output voltage options in the TECS20F range.
Universal AC input (85–264Vac).
The TECS20F (20W) sits between the TECS10F (10W) and TECS45F (45W) in the open-frame TECS family.
Safety: UL62368-1, C-UL (equivalent to CAN/CSA-C22.2 No. 62368-1), EN62368-1. EMC: built-in harmonic attenuator compliant with IEC61000-3-2. Class II construction — no FG connection required. RoHS compliant. 5-year Cosel manufacturer's warranty. These certifications confirm suitability for equipment destined for the Australian, North American, European, and Japanese markets.
The TECS series provides a certified, reliable, and compact AC/DC power source that can be directly integrated onto a host PCB, avoiding the cost and complexity of designing a custom mains power supply into the equipment.