141B

Overview

The Hammond Manufacturing 141B is a single-channel audio signal transformer designed for low-profile printed circuit board mounting. It features pin terminal through-hole termination and operates within a frequency range of 200 Hz to 50 kHz. The component has a primary impedance of 200 kOhms and a secondary impedance of 1 kOhms, with a power rating of 4 mW. Physical dimensions are 0.78 inches in length, 0.66 inches in width, and 0.46 inches in height. The unit weighs 22.680 grams and is unshielded.

Feature Summary

• Low-profile design optimized for space-constrained PCB applications
• Through-hole pin terminal construction for secure board attachment
• High-impedance matching capability between 200 kOhm and 1 kOhm circuits

Applications

• Audio signal coupling in professional equipment
• Impedance matching stages in signal processing chains
• Low-power audio interface circuits

Procurement Notes

Verify the specific datasheet version when sourcing, as manufacturer documentation may undergo revisions. Confirm that the through-hole pin configuration aligns with your PCB footprint requirements. Ensure the unshielded nature of the component does not conflict with electromagnetic interference constraints in your final assembly design before placing orders.

Selection Notes

Select this component when high input impedance matching is required for audio signals. The 200 Hz lower frequency limit defines its suitability for specific audio bands rather than full-range wideband applications. Consider the physical height constraint of 0.46 inches for enclosure clearance. Verify thermal dissipation capabilities given the 4 mW power rating in enclosed environments.

Part Context

This part belongs to the Hammond 141 series of audio transformers. The series focuses on low-profile PC board mount solutions for signal conditioning. Other variants in the family likely differ in impedance ratios or physical dimensions while maintaining the same fundamental through-hole pin terminal architecture and application scope.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.