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Product Detailed Parameters
- Description：AUDIO XFMR 10KCT / 1.5KCT TH
- Series：107
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：Through Hole
- Size / Dimension：0.630" L x 0.586" W (16.00mm x 14.88mm)
- Height - Seated (Max)：0.630" (16.00mm)
- Termination Style：PC Pin
- Turns Ratio - Primary:Secondary：2.58:1
- Impedance - Primary (Ohms)：10kCT
- Impedance - Secondary (Ohms)：1.5kCT
- DC Resistance (DCR) - Primary：700Ohm
- DC Resistance (DCR) - Secondary：122Ohm
- Transformer Type：Miniature Epoxy Potted
- Frequency Range：300Hz ~ 50kHz
- Frequency Response：±1.5dB
- Voltage - Isolation：100VRMS
- Insertion Loss：-
- Return Loss：-
- Power Level：150mW
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 107P is a push-pull tube audio output transformer designed for general-purpose and replacement applications in tube amplifier circuits. It features a dual primary winding configuration with an impedance of 5,000 ohms center-tapped on each side, providing a total primary impedance of 10,000 ohms. The secondary winding offers two taps: 4 ohms and 8 ohms, to accommodate various speaker loads. Rated at 25 watts, the unit operates within a frequency range of 30 Hz to 20 kHz. It utilizes wire leads for connection and is constructed with a steel core and case.
Feature Summary
- Dual primary winding design optimized for push-pull tube output stages
- Multiple secondary impedance options including 4-ohm and 8-ohm taps
- Robust steel construction ensuring durability in audio equipment environments
Applications
- Replacement in vintage tube guitar amplifiers
- General-purpose push-pull tube audio output circuits
- Hi-Fi audio amplifier restoration projects
Procurement Notes
Verify that the replacement transformer matches the original circuit's impedance requirements and physical mounting constraints. Confirm that the wire lead configuration aligns with existing wiring harnesses. Ensure the power rating meets or exceeds the amplifier's maximum output demand to prevent thermal failure during operation.
Selection Notes
Select this component when a direct replacement is required for a 10k-ohm center-tapped primary and 4/8-ohm secondary configuration. Consider the physical dimensions and weight to ensure compatibility with the existing chassis space. Evaluate the frequency response specifications against the target audio application's bandwidth requirements.
Part Context
This transformer belongs to Hammond Manufacturing's line of audio output transformers, specifically engineered for vacuum tube electronics. It serves as a critical interface between the high-voltage plate circuits of output tubes and low-impedance loudspeaker systems, facilitating efficient signal transfer and impedance matching.
