850NA

Overview

The Hammond Manufacturing 850NA is an audio broadcast transformer designed for line-sealed applications. It features a primary impedance of 600 ohms and 150 ohms, with secondary impedances of 10k ohms and 40k ohms. The device supports a maximum input level of +15dBm. Electrical performance covers a frequency range from 20Hz to 20kHz. Physical dimensions are 43.2mm in length, 30.5mm in width, and 41.9mm in height. Termination is achieved via wire leads, and the unit is fully potted and shielded for noise reduction.

Feature Summary

• Line-sealed construction suitable for broadcast environments
• Integrated shielding to minimize electromagnetic interference
• Potted design for environmental protection and mechanical stability

Applications

• Audio broadcast signal transmission
• Impedance matching between audio stages
• Professional audio line interface circuits

Procurement Notes

Verify the specific impedance configuration required for the application, as the 850NA offers multiple primary and secondary options. Confirm that the physical dimensions fit within the designated chassis space. Ensure compatibility with existing wiring harnesses due to the wire lead termination style. Check for any specific shielding requirements if used in high-noise industrial settings.

Selection Notes

Select this component when precise audio impedance transformation is needed between 600-ohm systems and higher impedance lines. Consider the compact form factor for space-constrained enclosures. Evaluate the need for shielding if the installation environment contains significant electrical noise sources. Verify that the frequency response meets the specific audio bandwidth requirements of the system.

Part Context

This part belongs to Hammond Manufacturing's audio transformer lineup, specifically tailored for broadcast and professional audio uses. It complements other line transformers by providing robust isolation and impedance conversion. The series is known for reliability in continuous operation scenarios typical of radio and television studios.

Replacement Considerations

No direct public substitute part numbers are confirmed for this specific model. When replacing, ensure the new component matches the exact impedance ratios and physical footprint. Verify that the replacement also provides equivalent shielding and potting characteristics to maintain signal integrity.