SP-22-B

Audio Transformers Overview

The Triad Magnetics SP-22-B is a high-performance audio transformer designed for through-hole mounting. It features a primary impedance of 10k Ohms and secondary impedances of 2k, 500, and 500 Ohms, providing a 4.48:1:1 ratio. The device operates within a frequency range of 300Hz to 100kHz and supports an isolation voltage of 1000Vrms. Constructed with six PC pins, it offers robust encapsulation for reliable signal transmission in professional audio applications.

Audio Transformers Feature Summary

• Provides precise impedance matching with a 4.48:1:1 ratio between primary and dual secondary windings
• Ensures wideband signal fidelity across the 300Hz to 100kHz operational frequency spectrum
• Features durable encapsulation and through-hole construction for stable mechanical integration

Audio Transformers Applications

• Professional audio equipment signal coupling
• Microphone preamplifier input stages
• Line-level signal isolation and transformation

Audio Transformers Procurement Notes

Verify the specific suffix designation when sourcing, as variations like SP-22 exist with different impedance configurations. Confirm that the required secondary impedance matches the 2k/500/500 Ohm specification of the SP-22-B variant. Ensure compatibility with through-hole PCB layouts requiring six-pin spacing. Cross-reference datasheets to validate electrical parameters against system requirements before finalizing procurement orders.

Audio Transformers Selection Notes

Select this component when a 10k primary impedance is required for proper source loading. Choose the SP-22-B over standard variants if the specific 4.48:1:1 impedance ratio is necessary for the circuit design. Consider the 300Hz lower frequency limit to ensure suitability for the intended audio bandwidth. Verify that the 1000Vrms isolation rating meets safety standards for the application environment.

Audio Transformers Part Context

This component belongs to Triad Magnetics' Red-Spec series, known for high-quality audio transformers. The SP-22-B variant specifically addresses applications requiring distinct secondary impedance options alongside a high-impedance primary winding. It serves as a specialized solution for audio engineers needing precise voltage transformation ratios within a compact through-hole package.

Audio Transformers Replacement Considerations

Direct substitutes include the Triad Magnetics SP-22, though verification of impedance values is critical as they may differ. Check for equivalent audio transformers from other manufacturers offering 10k primary and similar secondary configurations. Ensure replacement parts match the six-pin through-hole footprint and operating temperature range.