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Product Detailed Parameters
- Description：XFMR 1.2K-25K / 1.5-15 CHAS MNT
- Series：125
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：Chassis Mount
- Size / Dimension：2.380" L x 1.380" W (60.45mm x 35.05mm)
- Height - Seated (Max)：1.380" (35.05mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：1.2k ~ 25k
- Impedance - Secondary (Ohms)：1.5 ~ 15
- DC Resistance (DCR) - Primary：-
- DC Resistance (DCR) - Secondary：-
- Transformer Type：General Purpose
- Frequency Range：150Hz ~ 15kHz
- Frequency Response：±1dB
- Voltage - Isolation：-
- Insertion Loss：-
- Return Loss：-
- Power Level：5W
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 125B is a universal push-pull tube output audio transformer designed for general-purpose applications. It features a single channel with terminal end connections and operates within a frequency range of 150 Hz to 15 kHz. The unit has a power rating of 3 watts, an inductance of 14.94 H, and a primary coil impedance of 25 kOhms. The secondary coil impedance is 15 Ohms. The component is unshielded and measures 2.06 inches in length, 1.25 inches in width, and 1.19 inches in height.
Feature Summary
- Designed for general purpose or replacement use in push-pull tube output circuits
- Universal configuration suitable for various tube amplifier designs
Applications
- Push-pull tube output circuits
- General purpose audio amplification
- Tube amplifier replacement
Procurement Notes
Verify the specific model suffix against official documentation to ensure compatibility with your circuit requirements. Confirm that the terminal type matches your assembly needs. Check RoHS compliance status if required by your manufacturing standards. Ensure the power rating and impedance values align with your tube specifications before procurement.
Selection Notes
Select this transformer for applications requiring a universal push-pull tube output solution. Consider the 25 kOhm primary and 15 Ohm secondary impedances when matching with compatible tubes. Verify physical dimensions fit within the enclosure constraints. Compare against the 125SE series if single-ended operation is needed instead.
Part Context
The 125B belongs to the Hammond Manufacturing line of audio and signal transformers. It is part of a series designed specifically for tube-based audio equipment. This component serves as a critical interface between tube stages and speakers in traditional audio amplifier architectures.
Replacement Considerations
Consult official Hammond Manufacturing documentation for confirmed substitute part numbers. Verify electrical parameters such as impedance and power rating match the original design requirements before substituting.
