EE12.7-XK High-Frequency SMPS Transformer 5V 1A, PCB Mount
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Prices updated: 13 Oct 2026
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About this product
A PCB-mount high-frequency switch-mode power supply transformer with an EE12.7 core in PC40 ferrite and a primary inductance of 2.10 mH. It provides a 5 V, 1 A output from a 100-240 VAC input and is listed as compatible with the CX7131 controller IC, for building compact offline power supplies.
Specifications
- Output
- 5 V, 1 A
- Input
- 100-240 VAC
- Core
- EE12.7, PC40 ferrite
- Primary inductance
- 2.10 mH ±10% (10 kHz, 1 V, 25 °C)
- Compatible controller
- CX7131
- Mounting
- PCB mount, vertical 5+5 frame
Frequently asked questions
Which controller is it designed for?
The listing states compatibility with the CX7131 IC solution. Follow the listed winding and pin map (N1 on pins 2-1, N2 on pins 6-10, N3 on pins 5-4) when wiring it into a flyback circuit.
What safety precautions apply?
The input is mains voltage (100-240 VAC). Use proper fusing, creepage and isolation, and test the circuit with an isolated supply. Do not work on mains-connected circuits without the required training.
