Audio Frequency Transformer ATS

Key Features

The Audio Frequency Transformer ATS Series delivers precision signal coupling as a dedicated Low Frequency Transformer, featuring 1000Vrms inter-winding isolation and ultra-compact SMT design (height ≤7.3mm). With turns ratios standardized at 1:1 ±1%, it ensures minimal insertion loss (≤3.0dB @1kHz) and DC resistance as low as 140Ω. Fully encapsulated for RoHS/UL94V-0 compliance, this series synergizes with power inductors for stable energy transfer and RF inductors in broadband signal chains. Custom configurations support center-tapped windings for flexible integration.

Technical Specifications

• Isolation Voltage: 1000Vrms (winding to winding)

• Inductance: 4.3H min @1kHz (model-dependent)

• DC Resistance (DCR): 140Ω–480Ω (primary/secondary)

• Frequency Response: ±0.35dB (300Hz–4kHz)

• Insertion Loss: ≤3.0dB @1kHz, 1V (600Ω load)

• Longitudinal Balance: ≥70dB (200Hz–4kHz)

• Operating Temp: -40°C to +85°C
  Terminal plating: Solder-friendly AgSn

Applications

1. Telecom Interfaces: Line matching in modems and PCMCIA cards, paired with EMC filters for noise suppression.

2. Audio Isolation Stages: Coupling preamps/mixers with distortion-free signal transfer.

3. Security Systems: Reliable signal integrity for Sensor-based alarm networks.

4. Power Management: Voltage adaptation in power converters for DC-DC circuits.

5. Instrumentation: Precision measurement devices requiring low-DCR transformers.

FAQ

Q: Can it replace general-purpose power inductors?
A: Optimized for 200Hz-10kHz audio bands (not power conversion), with lower DCR than standard power inductors.

Q: How to minimize EMI in audio circuits?
A: Combine with RF inductors and EMC filters to suppress high-frequency interference.

Q: Custom turns ratios supported?
A: Yes, for specialized transformers (e.g., 1.2K:8Ω).