SP-29

Audio Transformers Overview

The Triad Magnetics SP-29 is an encapsulated audio transformer designed for signal coupling applications. It features a primary impedance of 10 kΩ and a secondary impedance of 500 Ω, with a turns ratio of 4.48:1:1. The device supports a current rating of 1 mA and operates within a frequency range of 300 Hz to 100 kHz. It utilizes a through-hole mounting style with radial leads, ensuring reliable integration into printed circuit boards for professional audio equipment.

Audio Transformers Feature Summary

• Encapsulated construction provides environmental protection and mechanical stability
• Optimized frequency response suitable for high-fidelity audio signal transmission
• Standardized impedance matching between 10 kΩ primary and 500 Ω secondary windings

Audio Transformers Applications

• Professional audio mixing consoles
• Microphone preamplifier circuits
• Line-level signal isolation stages

Audio Transformers Procurement Notes

Verify the specific datasheet revision and RoHS compliance status prior to ordering, as manufacturing specifications may evolve. Confirm that the encapsulation type meets the thermal and mechanical requirements of the target enclosure. Ensure that the through-hole footprint dimensions align precisely with the PCB layout to prevent assembly errors during production.

Audio Transformers Selection Notes

Select this component when precise impedance transformation between high-impedance sources and low-impedance loads is required in audio paths. The 1 mA current rating dictates suitability for low-power signal lines rather than power delivery. Evaluate the 300 Hz to 100 kHz bandwidth against the system's frequency response needs to ensure minimal phase distortion.

Audio Transformers Part Context

The SP-29 belongs to Triad Magnetics' Red Spec series, which targets high-performance audio applications. This series emphasizes tight tolerance and consistent electrical characteristics across production batches. As an encapsulated unit, it offers superior durability compared to open-frame designs, making it appropriate for consumer and industrial audio hardware requiring long-term reliability.

Audio Transformers Replacement Considerations

No direct public substitute part numbers are confirmed in available documentation. Cross-reference impedance ratios and physical dimensions carefully if considering alternative manufacturers. Verify that any replacement maintains the 4.48:1:1 turns ratio to preserve signal integrity in existing circuit designs.