SP-48-B

Overview

The Triad Magnetics SP-48-B is an encapsulated audio transformer designed for signal coupling applications. It features a primary impedance of 7.5k center-tapped and a secondary impedance of 12 ohms, providing a 25:1 turns ratio. The component operates within a frequency range of 300Hz to 100kHz with a response tolerance of ±2dB. It supports a power level of 50mW and offers 1000VRMS isolation voltage. The unit utilizes through-hole termination and measures 10.41mm in length by 7.87mm in width.

Feature Summary

• Encapsulated construction provides environmental protection and mechanical stability
• Center-tapped primary winding configuration enables flexible circuit integration
• Wide frequency response suitable for high-fidelity audio signal transmission

Applications

• Audio signal coupling circuits
• Impedance matching between stages
• Professional audio equipment interfaces

Procurement Notes

Verify the specific suffix designation against official Triad Magnetics documentation to confirm exact electrical tolerances and physical dimensions. Ensure that the encapsulation type matches the thermal requirements of the target application. Cross-reference the datasheet revision date to guarantee compliance with current manufacturing standards and material specifications.

Selection Notes

Select this component when a precise 25:1 impedance transformation is required between high-impedance sources and low-impedance loads. The encapsulated design is preferred for environments requiring protection against moisture and vibration. Confirm that the operating frequency range aligns with the specific audio bandwidth needs of the system design.

Part Context

This part belongs to the Red-Spec series of audio transformers from Triad Magnetics. These components are engineered for reliable performance in consumer and professional audio systems. The series emphasizes consistent electrical characteristics across production batches to ensure uniformity in mass-produced audio devices.

Replacement Considerations

Direct substitutes include models with identical 7.5kCT/12 Ohm ratios and encapsulated form factors. Verify mounting hole spacing and lead configurations before substitution to ensure mechanical compatibility without PCB modifications.