1620A

Description：XFMR 6.6KCT / 4, 8, 16 CHAS MNT
Series：A
Mfr：Hammond Manufacturing
Package：Box

SKU:19398528f237 Category: Audio Transformers Brand: Hammond Manufacturing

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Product introduction

Product Detailed Parameters

Description：XFMR 6.6KCT / 4, 8, 16 CHAS MNT
Series：A
Mfr：Hammond Manufacturing
Package：Box
Mounting Type：Chassis Mount
Size / Dimension：3.500" L x 2.500" W (88.90mm x 63.50mm)
Height - Seated (Max)：3.060" (77.72mm)
Termination Style：Wire Leads
Turns Ratio - Primary:Secondary：-
Impedance - Primary (Ohms)：6.6kCT
Impedance - Secondary (Ohms)：4, 8, 16
DC Resistance (DCR) - Primary：66.16Ohm, 74.93Ohm
DC Resistance (DCR) - Secondary：170mOhm, 300mOhm, 440mOhm
Transformer Type：Push-Pull Audiophile, Ultra-Linear - Tube Output
Frequency Range：30Hz ~ 30kHz
Frequency Response：±1dB
Voltage - Isolation：2000V @ 1 Second
Insertion Loss：-
Return Loss：-
Power Level：20W
Operating Temperature：-
Approval Agency：-

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1620A

Overview

The Hammond Manufacturing 1620A is a push-pull tube output audio transformer designed for general-purpose and replacement applications. It features a primary winding with a center tap rated at 6,600 ohms and 158 mA. The secondary winding offers selectable impedances of 4, 8, and 16 ohms. This component delivers a power level of 20W and operates within a frequency response range of 30 Hz to 30 kHz at full power. It utilizes an enclosed shielded construction with four mounting slots for above-chassis Type X installation.

Feature Summary

Push-pull tube output circuit design
Enclosed and shielded construction
Selectable secondary impedance options
Above-chassis Type X mounting configuration

Applications

Push-pull tube audio output circuits
General-purpose audio transformer replacement
Tube amplifier output stages

Procurement Notes

Verify the specific datasheet version and manufacturer documentation to confirm electrical ratings and physical dimensions. Ensure compatibility with existing chassis mounting requirements and thermal conditions. Cross-reference part numbers with authorized distributors to confirm availability and authenticity. Review safety certifications and compliance standards relevant to your region before integration.

Selection Notes

Select this component when a push-pull tube output transformer with 20W power handling is required. Consider the primary impedance of 6,600 ohms center-tapped and the available secondary loads of 4, 8, and 16 ohms. Evaluate the need for shielding and the specific mounting style for chassis integration. Confirm frequency response requirements align with the specified 30 Hz to 30 kHz range.

Part Context

This audio transformer belongs to Hammond Manufacturing's line of specialized transformers for tube-based electronics. It serves as a critical component in vintage and modern tube amplifier designs, providing impedance matching and signal transfer between output tubes and speakers. The product supports both new builds and restoration projects requiring authentic or compatible replacement parts.