804A

Description：AUDIO XFMR CHAS MNT
Series：800A
Mfr：Hammond Manufacturing
Package：Bulk

SKU:13f3bd406d15 Category: Audio Transformers Brand: Hammond Manufacturing

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Product introduction

Product Detailed Parameters

Description：AUDIO XFMR CHAS MNT
Series：800A
Mfr：Hammond Manufacturing
Package：Bulk
Mounting Type：Chassis Mount
Size / Dimension：-
Height - Seated (Max)：1.250" (31.75mm)
Termination Style：Wire Leads
Turns Ratio - Primary:Secondary：-
Impedance - Primary (Ohms)：-
Impedance - Secondary (Ohms)：-
DC Resistance (DCR) - Primary：-
DC Resistance (DCR) - Secondary：-
Transformer Type：Impedance Matching
Frequency Range：50Hz ~ 15kHz
Frequency Response：±0.5dB
Voltage - Isolation：-
Insertion Loss：-
Return Loss：-
Power Level：15dB
Operating Temperature：-
Approval Agency：-

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804A

Overview

The Hammond Manufacturing 804A is a broadcast-quality audio transformer designed for general-purpose use and replacement in push-pull tube output circuits. It operates within a frequency range of 50 Hz to 15 kHz. The primary winding impedance is available in 20 kOhms or 40 kOhms configurations, while the secondary winding impedance is 500 Ohms. The unit features shielded construction to minimize interference. Physical dimensions are 44.5 mm in length, 31.8 mm in width, and 65 mm in height. The maximum DC current rating is 1.6 mA.

Feature Summary

Designed specifically for push-pull tube output circuit applications
Shielded construction for broadcast signal integrity
General-purpose utility with replacement capability

Applications

Push-pull tube output circuits
Broadcast audio systems
Signal isolation in professional audio equipment

Procurement Notes

Verify the specific primary impedance variant (20 kOhms or 40 kOhms) required for your circuit design before ordering, as both are listed under this model number. Confirm that the wire lead termination type matches your existing assembly. Ensure the physical envelope dimensions fit within the designated chassis space. Cross-reference the maximum DC current rating against your operational requirements to prevent saturation.

Selection Notes

Select the 804A when replacing transformers in vintage or modern push-pull tube amplifiers requiring broadcast-grade performance. Choose this component if the application demands a shielded audio transformer with a 500 Ohm secondary impedance. Consider the physical size constraints and the need for wire lead terminations. This part is suitable for general-purpose audio interfacing where high fidelity and low noise are prioritized over compact form factors.

Part Context

The 804A belongs to the Hammond 800 series of audio and signal transformers. This series is characterized by its robust construction and suitability for professional broadcast environments. The 804A specifically targets the niche of tube-based audio output stages, providing necessary impedance matching and isolation. It shares dimensional standards with other units in the 800 series, facilitating standardized mounting solutions in compatible equipment enclosures.