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Product Detailed Parameters
- Description：XFMR 2.5K-10K / 4-32 CHAS MNT
- Series：125SE
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：Chassis Mount
- Size / Dimension：2.810" L x 1.350" W (71.37mm x 34.29mm)
- Height - Seated (Max)：1.690" (42.93mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：2.5k ~ 10k
- Impedance - Secondary (Ohms)：4 ~ 32
- DC Resistance (DCR) - Primary：241.7 Ohm
- DC Resistance (DCR) - Secondary：229mOhm, 323mOhm, 463mOhm, 670mOhm
- Transformer Type：General Purpose
- Frequency Range：100Hz ~ 15kHz
- Frequency Response：±1dB
- Voltage - Isolation：1500V @ 1 Second
- Insertion Loss：-
- Return Loss：-
- Power Level：3W
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 125ASE is a general-purpose audio transformer designed for universal single-ended tube output circuits. It supports a power level of 3 watts and operates within a frequency range of 100 Hz to 15 kHz. The component provides a frequency response of ±1 dB at full rated power. Electrical isolation is rated at 1500 V for one second. This transformer is intended for general purpose applications or as a replacement in existing designs, though it is not specified for high-fidelity use.
Feature Summary
- Designed for single-ended tube output circuits
- Provides electrical isolation up to 1500 V
- Suitable for general-purpose audio signal transformation
Applications
- Single-ended tube amplifier output stages
- General-purpose audio signal coupling
- Replacement components in legacy tube equipment
Procurement Notes
Verify the specific datasheet version when ordering, as Hammond may offer factory modifications that alter pinouts or electrical characteristics. Confirm compatibility with your circuit's impedance requirements before purchase. Check distributor availability as lead times may vary. Ensure the unit meets the required 3-watt power handling for your application.
Selection Notes
Select this component for non-high-fidelity applications requiring isolation in tube-based audio systems. Consider the 100 Hz to 15 kHz frequency range against your signal bandwidth needs. Evaluate the 1500 V isolation rating for safety compliance. Compare against other Hammond audio transformers if higher fidelity or different power levels are required.
Part Context
The 125ASE belongs to Hammond Manufacturing's line of audio and signal transformers. These components are typically used in vintage audio restoration and modern tube amplifier builds. The series focuses on robust construction for general-purpose signal transfer rather than precision audiophile performance.
FAQ
Is the 125ASE suitable for high-fidelity audio applications?
No, the datasheet specifies that the 125ASE is designed for general-purpose or replacement use and is not intended for Hi-Fi applications.
What is the maximum voltage isolation rating?
The transformer provides an isolation rating of 1500 V for a duration of one second.
