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Product Detailed Parameters
- Description：XFMR 2.5K-10K / 4-32 CHAS MNT
- Series：125SE
- Mfr：Hammond Manufacturing
- Package：Box
- Mounting Type：Chassis Mount
- Size / Dimension：4.150" L x 2.880" W (105.41mm x 73.15mm)
- Height - Seated (Max)：3.460" (87.88mm)
- Termination Style：Solder Lug
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：2.5k ~ 10k
- Impedance - Secondary (Ohms)：4 ~ 32
- DC Resistance (DCR) - Primary：50Ohm
- DC Resistance (DCR) - Secondary：250mOhm
- Transformer Type：General Purpose
- Frequency Range：100Hz ~ 15kHz
- Frequency Response：±1dB
- Voltage - Isolation：2000V @ 1 Second
- Insertion Loss：-
- Return Loss：-
- Power Level：25W
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 125GSE is an unshielded audio power transformer designed for tube output single-ended applications. It features a primary coil impedance of 10 kOhms and a secondary coil impedance of 32 Ohms, with a frequency range spanning from 100 Hz to 15 kHz. The unit has a power rating of 25 W and supports a maximum DC current of 100 mA. Physical dimensions are 4.15 inches in length, 2.88 inches in width, and 3.46 inches in height, utilizing screw termination type.
Feature Summary
- Designed specifically for tube output single-ended amplifier circuits
- Provides electrical isolation between primary and secondary windings
- Constructed with screw terminals for secure wiring connections
Applications
- Single-ended tube output stage integration
- Audio signal coupling in vacuum tube amplifiers
- Impedance matching between tube plates and speaker loads
Procurement Notes
Verify the specific suffix designation against the manufacturer's official datasheet to confirm exact impedance and power ratings. Ensure the component meets required RoHS compliance standards for your assembly process. Confirm physical mounting requirements align with chassis specifications before procurement.
Selection Notes
Select this model when designing single-ended tube amplifiers requiring a 10k primary to 32 ohm secondary transformation ratio. Consider the unshielded construction for applications where external shielding is provided or magnetic interference is minimal. Verify that the 25W power rating matches the operational demands of the intended tube pair.
Part Context
This component belongs to the 125SE series of audio transformers manufactured by Hammond Manufacturing. It serves as a specialized passive component within high-fidelity audio reproduction systems, facilitating efficient power transfer from vacuum tubes to low-impedance speakers while maintaining signal integrity across the audible frequency spectrum.
Replacement Considerations
Consult official documentation for verified substitute part numbers. Cross-referencing with similar models like 125FSE requires careful evaluation of differing power ratings and current capabilities to ensure circuit compatibility.
