1650PA

Overview

The Hammond Manufacturing 1650PA is a push-pull tube application power transformer designed for audio output stages. It features a primary impedance of 6,600 CT and supports a maximum DC current of 200 mA. The unit delivers a power rating of 60W with a frequency range spanning 30 Hz to 30 kHz. Secondary terminals provide selectable impedances of 4, 8, and 16 Ohms. The component utilizes chassis mount installation within dimensions of 4.250 inches in length, 3.130 inches in width, and a maximum seated height of 3.810 inches.

Feature Summary

• Push-pull configuration optimized for tube amplifier output stages
• Redesigned secondary windings facilitate straightforward connection of secondary loads
• Enclosed steel case construction provides electromagnetic shielding
• Includes 40% screen taps to support ultra-linear operation designs

Applications

• High-fidelity vacuum tube audio amplifiers
• Professional audio equipment output stages
• Ultra-linear tube circuit implementations
• Chassis-mounted audio signal transformation

Procurement Notes

Verify the specific datasheet revision when sourcing this component, as the manufacturer notes it is a new and improved version of the 1608-1650 series. Confirm that the redesigned secondings align with your load requirements. Ensure the chassis mounting holes match your enclosure specifications. Check for RoHS compliance status if required by your manufacturing standards. Validate the 60W power rating against your thermal management capabilities.

Selection Notes

Select the 1650PA when a 60W push-pull output transformer is required for tube-based audio systems. This model is suitable for designs needing 6,600 CT primary impedance with 4, 8, or 16 Ohm secondary options. Consider this part for applications requiring ultra-linear tap availability. Compare physical dimensions against available chassis space. Evaluate the shielded enclosure benefits for noise-sensitive high-gain audio circuits.

Part Context

This component belongs to the 1608A-1650A series of audio transformers from Hammond Manufacturing. The series includes various models differentiated by power ratings, primary impedances, and mounting styles. The 1650PA represents an updated iteration within this lineup, focusing on improved secondary winding configurations for easier integration into modern tube amplifier designs while maintaining traditional performance characteristics.

Replacement Considerations

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