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Product Detailed Parameters
- Description：AUDIO XFMR 20K/80K OHM SEC
- Series：HS
- Mfr：Triad Magnetics
- Package：Box
- Mounting Type：Chassis Mount
- Size / Dimension：1.797" L x 1.469" W (45.64mm x 37.31mm)
- Height - Seated (Max)：2.531" (64.29mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：1:02
- Impedance - Primary (Ohms)：20k, 5k
- Impedance - Secondary (Ohms)：80k, 20k
- DC Resistance (DCR) - Primary：935Ohm, 1.02kOhm
- DC Resistance (DCR) - Secondary：1.647kOhm, 2.272kOhm
- Transformer Type：Impedance Matching
- Frequency Range：20Hz ~ 20kHz
- Frequency Response：-2.35dB
- Voltage - Isolation：-
- Insertion Loss：-
- Return Loss：-
- Power Level：20mW
- Operating Temperature：0°C ~ 70°C
- Approval Agency：-
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Overview
The Triad Magnetics HS-29 is a hermetically sealed low-level audio interstage transformer designed for vintage and modern demanding applications. It features a primary impedance of 20 kOhms and a secondary impedance of 80 kOhms, establishing a turns ratio of 1:2. The component supports a maximum frequency of 20 kHz and handles a secondary power rating of 20 mW. Constructed with shielding to minimize interference, it ensures signal integrity in precision audio circuits requiring durability and precise impedance matching.
Feature Summary
- Hermetically sealed construction provides durability against environmental factors
- Shielded design minimizes electromagnetic interference for clean signal transmission
- Optimized for low-level audio interstage coupling applications
Applications
- Vintage audio equipment restoration
- Modern high-fidelity amplifier designs
- Precision audio signal processing circuits
Procurement Notes
Verify the specific datasheet version when ordering, as manufacturing updates may occur. Confirm that the hermetic seal integrity meets your environmental requirements. Ensure the 20 kOhm primary and 80 kOhm secondary impedances align with your circuit topology before integration.
Selection Notes
Select this model when a 1:2 turns ratio and specific 20 kOhm/80 kOhm impedance values are required for interstage coupling. Consider the hermetic sealing if the operating environment demands protection against moisture or contaminants. Evaluate the 20 mW power handling capability against your signal levels to ensure adequate headroom without distortion.
Part Context
The HS-29 belongs to Triad Magnetics' HS series of low-level audio transformers. This series is widely adopted by audio equipment manufacturers for its reliability. The HS-29 specifically addresses the need for precision impedance transformation in both retro and contemporary audio systems, bridging legacy design standards with modern performance expectations.
Replacement Considerations
No direct public substitute part numbers are confirmed in the provided documentation. Verify compatibility with existing circuit boards and impedance requirements before attempting substitution with other interstage transformers.
FAQ
What is the turns ratio of the HS-29?
The HS-29 has a turns ratio of 1:2.
Is the HS-29 shielded?
Yes, the HS-29 is shielded to reduce interference.
