Preferred components for high-frequency power supplies requiring compact size and high isolation

The ER7.5 high-frequency electronic transformer features an SMD design, integrating the advantages of compact size, low loss, wide frequency band and high isolation. It has a typical power range of 2–5W, an operating frequency covering 20kHz–500kHz, and an isolation withstand voltage up to DC 2.0kV. Capable of stable operation in a wide temperature range of -40℃~+125℃, it is the ideal choice for high-frequency switching power supplies and signal isolation in scenarios requiring low power, high isolation and compact installation space.

Multi-Domain Adaptability for Full-Scenario Applications

The ER7.5 bobbin offers exceptional adaptability and is widely used in core scenarios across various industries: In consumer electronics and home appliances,In the consumer electronics and home appliances sector, these are suitable for use in switching power supplies/adapters, control boards for small appliances, and audio-visual equipment power transformers; In industrial instrumentation, it is suitable for precision measuring instruments, industrial control equipment, communication network modules and various test equipment; In automotive electronics and new energy, it is integrated into on-board electronics, photovoltaic micro-inverters, energy storage BMS and other devices; In medical and security fields, it meets the high isolation and low leakage inductance requirements of medical devices such as monitors and oximeters, as well as security equipment including IPC and PoE cameras. It is also applicable to low-power power supplies and navigation communication equipment in high-reliability scenarios such as aerospace, military industry, marine and shipbuilding.

Full Product Compatibility for Various Typical Terminals

This transformer is compatible with a wide range of terminal products, including various power supply products such as DC-DC module power supplies, Flyback/Forward switching power supply transformers and LLC resonant power supplies; drive and signal conditioning modules such as LED drive power supplies, PoE power supply modules and isolated amplifiers/signal conditioning modules; industrial IoT products such as industrial sensors/transmitters, smart meters and NB-IoT/LoRa IoT terminals; as well as professional terminals including medical monitoring and diagnostic equipment, on-board entertainment and control units, and security monitoring equipment.

Precise Selection: Master Five Core Key Points

For the selection of the ER7.5 transformer, focus on five core dimensions: Power range tailored for 2–5W low-power scenarios; Operating frequency covering the common 20kHz–500kHz band for switching power supplies; Isolation withstand voltage of ≥DC 1.5–2.0kV, meeting the high isolation requirements of safety regulations, medical and industrial fields; Compact size of approximately 9.5×8.0×6.0mm, perfectly suitable for ultra-compact spaces and high-density circuit boards; Wide temperature performance adapting to complex temperature-varying environments such as industrial and automotive applications, ensuring stable equipment operation.

Gradient Complementarity in the Same Series for Demand-Oriented Selection

The three ER series transformers (ER7.5, ER9.5 and ER11.5) form a gradient complementary system, enabling flexible selection based on actual needs: ER7.5 features the smallest bobbin size, focusing on 2–5W power, with a common operating frequency of 50–500kHz and a withstand voltage of 1.5–2kV, specially designed for ultra-compact spaces and high-density circuit boards; ER9.5 has a medium size, with a power range of 5–12W, a common frequency of 30–300kHz and a withstand voltage of 2–3kV, suitable for compact spaces and conventional circuit boards; ER11.5 has a relatively large size, with a power range of 10–25W, a common frequency of 20–200kHz and a withstand voltage of 3–5kV, ideal for applications with sufficient installation space.

Exclusive Matching Bobbins for Optimal Performance

Mycoiltech has launched two exclusive bobbins specially matched for ER7.5, which precisely meet the device requirements and further enhance the operational performance: MCT-ER7.5-01 is made of PM9630 material with excellent high-temperature resistance, suitable for high-temperature working environments; MCT-SMD-ER7.5-02 is made of LCP-E4008 material with an elevated bottom design, which effectively increases the creepage distance and greatly improves operational safety.

With its outstanding performance in multiple dimensions, the SMD-ER7.5 high-frequency electronic transformer bobbin achieves full adaptability across various domains and terminals. Combined with exclusive matching bobbins and the gradient selection scheme of the same series, it provides a highly reliable and well-adapted component solution for high-frequency switching power supplies and signal isolation products with low power and compact space requirements. It is also the core selection for the current development trend of miniaturization and high reliability of electronic equipment.

Email: sales008@mycoiltech.com

Name：Alex~Mycoiltech