TY-303P-B

Overview

The TY-303P-B is an audio and signal transformer manufactured by Triad Magnetics, designed for data and voice coupling applications. It features a primary impedance of 4000 ohms and a secondary impedance of 600 ohms, resulting in a turns ratio of 2.43:1. The device supports a maximum DC current of 0 mA on the primary side and utilizes radial PC pin termination for through-hole mounting. It operates within a frequency range of 200 Hz to 15 kHz and withstands an insulation voltage of 1500 VAC. The physical dimensions are 20.62 mm in length, 18.16 mm in width, with a maximum seated height of 18.80 mm.

Feature Summary

• Provides galvanic isolation between circuits with a 4000:600 impedance configuration
• Supports data and voice signal coupling without DC bias requirements
• Features radial PC pin termination for reliable through-hole PCB integration

Applications

• Data line coupling in telecommunications equipment
• Voice signal transmission in communication systems
• Impedance matching between circuit stages requiring isolation

Procurement Notes

Verify that the specific suffix 'B' corresponds to the required bulk packaging or variant specifications, as ordering suffixes may alter package quantity or handling characteristics. Confirm that the 0 mA DC current rating aligns with the application's signal requirements, ensuring no DC path is needed through the transformer primary. Ensure the 1500 VAC insulation rating meets the safety isolation standards of the target system design.

Selection Notes

Select this component when a high-impedance primary (4000 ohms) is required to match specific source impedances in audio or data lines. The absence of DC current allowance makes it suitable for pure AC signal coupling where magnetic saturation from DC bias must be avoided. Consider the 200 Hz to 15 kHz frequency response to ensure adequate bandwidth for the intended voice or data frequencies.

Part Context

This component belongs to the TY series of audio transformers from Triad Magnetics, which are generally characterized by pin terminal construction and radial termination styles. These devices are engineered for robust performance in signal processing environments, offering standardized impedance ratios to facilitate easy integration into existing audio and data infrastructure designs.

Replacement Considerations

The TY-303P is a related part number within the same series; verify if the 'B' suffix denotes a specific packaging or minor specification difference before substitution. Ensure any replacement maintains the 4000:600 impedance ratio and 1500 VAC insulation rating to preserve circuit functionality and safety compliance.