149G

Overview

The Hammond Manufacturing 149G is an open-frame audio signal transformer designed for PC board mounting. It features a single-channel configuration with a primary impedance of 600 ohms and secondary impedances of 150/600 ohms. The device operates within a frequency range of 200 Hz to 15 kHz. Electrical specifications include a maximum DC current rating of 29 mA and a power handling capacity of 200 mW. The component utilizes through-hole radial termination for integration into driver circuits.

Feature Summary

• Open-frame construction facilitates direct printed circuit board mounting
• Single-channel design optimized for audio driver applications
• Radial lead termination supports standard through-hole assembly processes

Applications

• Audio signal driver circuits
• Impedance matching in audio equipment
• Signal transformation in communication devices

Procurement Notes

Verify the specific datasheet version to confirm exact electrical tolerances and pinout configurations before integration. Ensure that the selected mounting orientation accommodates the open-frame structure without compromising thermal dissipation or mechanical stability. Cross-reference the manufacturer's part number with authorized distributor catalogs to confirm availability and authenticity, as supply chain variations may exist.

Selection Notes

Select this component when a 600-ohm primary impedance is required for audio driver stages. The 150/600-ohm secondary option provides flexibility for varying load requirements. Consider the physical dimensions and through-hole spacing constraints during PCB layout. Verify that the operating frequency range aligns with the intended audio bandwidth to ensure optimal signal fidelity and minimal distortion.

Part Context

This component belongs to the Hammond Manufacturing audio transformer series, specifically engineered for signal processing tasks. It serves as a critical interface element between source and load in audio systems. The open-frame design distinguishes it from encapsulated variants, offering ease of inspection and potential custom modification capabilities while maintaining standard electrical performance metrics for professional audio applications.

Replacement Considerations

Direct substitutes must match the 600:150/600 ohm impedance ratio and through-hole package. Verify compatibility with existing PCB footprints and thermal requirements. Consult manufacturer cross-reference lists for equivalent models with identical electrical characteristics and form factors.