SMD High-Frequency Current Transformer ACST014-016 Series Low Profile for DC-DC Converters and IP/OP Devices

The ACST014-016 series high-frequency current transformer is designed for switching power supply output smoothing filtering, EMI/RFI suppression, and DC-DC conversion applications. Rated current is up to 10A. Four turns ratio options are available: 1:1000, 1:2000, 1:2500, and 1:3000, suitable for different sampling accuracy requirements. The product uses a toroidal core and low-profile design. It is mounted directly on the PCB. The housing is made of PBT 94V0 flame-retardant material with epoxy filling, ensuring stable and reliable structure. Insulation resistance: ≥100MΩ (500V DC). Withstand voltage test: 4000V/1mA/60 seconds, offering high safety. It is widely used in switching power supply output smoothing filtering, spike and ripple suppression, EMI/RFI filtering, and DC-DC conversion.

1.  Low profile,directly to PCB.
2.  PBT 94V0 Case burn-resistant epoxy resin,stable.
3.  Toroid high frequency current transformer
4.  Current range: up to 10A maximum
5.  Turns ratio: 1:1000,1:2000,1:2500,1:3000

1.  Switching power output and smoothing circuits
2.  Used as choke coil for high frequency SMPs
3.  Countermeasure against spike ripples
4.  EMI/RFI filters
5.  DC/DC converters
6.  IP and OP devices

1.  Working Frequency range: 20Hz~500Hz
2.  Insulation resistance: 500V DC >100MΩ
3.  Hi-Pot : 4000V 1mA 60S
4.  Temperature range: -25℃ to +85℃
5.  Storage Temperature: -40℃℃ to +105℃℃
6.  Resistance to soldering heat:260℃ for 10 seconds
7.  Marking: Part number and date code

Note: Product specifications can be customized.

Q: What turns ratio options are available? How to choose?

A: The ACST014-016 series offers four turns ratio options: 1:1000, 1:2000, 1:2500, and 1:3000. A higher turns ratio means lower secondary output current, suitable for measuring smaller currents or for use with high-sensitivity sampling circuits. Selection should be based on the measured current range and the sensitivity of the downstream sampling circuit. We recommend contacting technical support for recommendations.

Q: What are the advantages of the PBT 94V0 housing?

A: PBT offers excellent electrical insulation and mechanical strength. The 94V0 flame-retardant rating ensures the material does not ignite easily under abnormal heating conditions. Combined with epoxy filling, the product structure is stable, heat-resistant, and moisture-resistant, suitable for demanding power supply environments.