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Product Detailed Parameters
- Description：AUDIO XFMR 300CT / 3.2 CHAS MNT
- Series：144
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：Chassis Mount
- Size / Dimension：1.000" L x 0.690" W (25.40mm x 17.53mm)
- Height - Seated (Max)：0.690" (17.53mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：300CT
- Impedance - Secondary (Ohms)：3.2
- DC Resistance (DCR) - Primary：15Ohm
- DC Resistance (DCR) - Secondary：330mOhm
- Transformer Type：Economical Open Type
- Frequency Range：150Hz ~ 15kHz
- Frequency Response：±1dB
- Voltage - Isolation：-
- Insertion Loss：-
- Return Loss：-
- Power Level：150mW
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 144D is a chassis-mount audio output transformer designed for push-pull tube circuits. It features a primary impedance of 5000 ohms center-tapped and dual secondary windings rated at 3.2 ohms each. The unit belongs to the 143-146 series, providing high-quality magnetics suitable for hi-fi applications.
Feature Summary
- Designed specifically for push-pull tube output circuits
- Provides high-quality magnetic performance for audio fidelity
- Chassis mount construction for secure installation
Applications
- Hi-fi amplifier output stages
- Push-pull tube circuit replacement
- Audio equipment restoration
Procurement Notes
Verify the specific winding configuration matches the original design requirements. Confirm that the 5000 ohm center-tapped primary and 3.2 ohm dual secondary specifications align with the target circuit topology before procurement.
Selection Notes
Select this component when replacing transformers in vintage or modern tube amplifiers requiring a 5k:3.2 ohm ratio. Ensure the chassis mounting style fits the existing enclosure layout and that the power handling capabilities meet the amplifier's output stage demands.
Part Context
This component is part of the 143-146 series of audio transformers from Hammond Manufacturing. These units are engineered for general-purpose use in vacuum tube audio systems, offering reliable performance for signal coupling in output stages.
Replacement Considerations
- Hammond 144A
- Hammond 144B
- Hammond 144C
FAQ
What is the primary impedance of the 144D transformer?
The primary impedance is 5000 ohms with a center tap.
What are the secondary winding specifications?
It features two secondary windings, each rated at 3.2 ohms.
