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Product Detailed Parameters
- Description：AUDIO XFMR 10K / 90KCT CHAS MNT
- Series：124
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：Chassis Mount
- Size / Dimension：-
- Height - Seated (Max)：-
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：1:03
- Impedance - Primary (Ohms)：10k
- Impedance - Secondary (Ohms)：90kCT
- DC Resistance (DCR) - Primary：405Ohm
- DC Resistance (DCR) - Secondary：1.525kOhm
- Transformer Type：Tube Driver and Speaker Matching
- Frequency Range：150Hz ~ 15kHz
- Frequency Response：±1dB
- Voltage - Isolation：500Vrms
- Insertion Loss：-
- Return Loss：-
- Power Level：5W
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 124C is a chassis-mount audio transformer designed for tube driver and interstage applications. It features a primary impedance of 10k Ohms and a secondary impedance of 90k Ohms center-tapped, with a turns ratio of 1:3. The unit supports a power level of 5W and operates within a frequency range of 150Hz to 15kHz. Electrical specifications include a primary DC resistance of 405 Ohms and a secondary DC resistance of 1.525 kOhms. It provides 500Vrms isolation voltage and maintains a frequency response of ±1dB.
Feature Summary
- Designed specifically for push-pull tube driver and phase inverter circuits
- Features a 1:3 turns ratio with center-tapped secondary winding
- Provides robust 500Vrms electrical isolation between windings
Applications
- Push-pull tube output circuits
- Phase inverter tube driver circuits
- General-purpose audio signal transformation
Procurement Notes
Verify the specific part number suffix against official Hammond Manufacturing documentation to ensure correct impedance and mounting configuration. Confirm that the application environment matches the component's thermal and electrical ratings. Check for RoHS compliance status if required by project specifications. Ensure the chassis mount style aligns with the enclosure design constraints before finalizing procurement orders.
Selection Notes
Select this component only for push-pull or phase inverter configurations; it is not suitable for single-ended applications. Ensure the circuit requires a 10k primary and 90kCT secondary impedance match. Verify that the 5W power rating and 150Hz-15kHz frequency range meet the system requirements. Consider the chassis mount form factor for integration into the target hardware assembly.
Part Context
The 124C belongs to the Hammond 124 Series of audio transformers. This series includes variants such as the 124A, which shares similar electrical characteristics but may differ in termination style or packaging. These components are engineered for high-fidelity audio signal transmission in vacuum tube amplifier designs, focusing on impedance matching and signal integrity.
Replacement Considerations
The 124A is a related model in the same series. Verify compatibility regarding termination style and physical dimensions before substitution. Ensure the replacement part meets the same 10k/90kCT impedance and 5W power specifications.
