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Audio frequency transformers covering the 300Hz to 3.4KHz range are specialized components for voice-grade communication, such as telephony and intercom systems. Key models include the 1:1 600
OEP Z1604, Xicon 42TL012-RC (10k:5k), and Hammond 150J203, which are designed to handle this specific voice bandwidth, typically with 19dB-20dB return loss.
Common Audio Transformers (300Hz-3.4KHz)
- OEP/Oxford Electrical Products Z1604: A 1:1 600to 600transformer commonly used in telephony and industrial applications, offering 19dB return loss between 300Hz and 3.4KHz.
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300 Hz to 3.4 kHz Audio Transformers / Signal Transformers
Mouser Electronics
https://www.mouser.com › passive-components › frequ...
Mouser Electronics
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300 Hz to 3.4 kHz Audio Transformers / Signal Transformers are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for 300 Hz to ...
Wholesale High Quality 300Hz To 3.4KHz Audio ...
Mycoiltech
https://www.mycoiltech.com › 300hz-to-3.4khz-audio-fr...
Mycoiltech
https://www.mycoiltech.com › 300hz-to-3.4khz-audio-fr...
EI14 audio frequency transformer has stable inductance value, small inductance deviation during adding of superposed current, large working current.Read more
oep / oxford electrical products z1604
Newark Electronics
https://www.newark.com › ... › Audio Transformers
Newark Electronics
https://www.newark.com › ... › Audio Transformers
Return loss is 19dB at 300Hz to 3.4KHz; Frequency range from 30Hz to 25KHz at 0.2mW; Primary DC resistance is 109ohm; Secondary DC resistance is 134ohm ...Read more
$7.43In stockFree delivery over $15060-day returns
AEI19-4660 Allied Components International
DigiKey
https://www.digikey.com › ... › Audio Transformers
DigiKey
https://www.digikey.com › ... › Audio Transformers
AEI19-4660 ; Transformer Type. - ; Frequency Range. 300Hz ~ 3.4kHz ; Frequency Response. ±0.3dB ; Voltage - Isolation. 100VAC.Read more
$2.34In stock$25.25 delivery30-day returns
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Audio Transformers in Stock
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Pricing and Specs at DigiKey — The world’s largest selection of electronic components in stock for immediate shipment. Find...
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42TL012-RC Audio Transformer
PedalPCB.com
https://www.pedalpcb.com › product
PedalPCB.com
https://www.pedalpcb.com › product
Frequency Range: 300 Hz to 3.4 kHz. Primary Impedance: 10 kOhms. Secondary Impedance: 5 kOhms. Weight .85 oz. Dimensions .6 × .6 × .5 in. Related products.Read more
$3.50In stockFree delivery over $10030-day returns
1 kOhms 8 Ohms Audio & Signal Transformers
Mouser Electronics
https://www.mouser.com › power › audio-signal-transf...
Mouser Electronics
https://www.mouser.com › power › audio-signal-transf...
Transformer, Radial, 300 Hz to 3.4 kHz, 1 kOhms, 8 Ohms, 100 VDC, 1 Channel, 24.89 mm, 18.29 mm, 18.8 mm, 42TU, Bulk. Audio Transformers / Signal Transformers ...Read more
Z1604 OEP / OXFORD ELECTRICAL PRODUCTS, Audio ...
Farnell Österreich
https://at.farnell.com › ... › Audio Transformers
Farnell Österreich
https://at.farnell.com › ... › Audio Transformers
Return loss is 19dB at 300Hz to 3.4KHz; Frequency range from 30Hz to 25KHz at 0.2mW; Primary DC resistance is 109ohm; Secondary DC resistance is 134ohm ...Read more
€4.97 to €6.00In stock14-day returns
People also ask
What is an audio frequency transformer?
Audio Transformers are electromagnetic devices that transmit and modify input electromagnetic signals into output signals via inductive coupling. They isolate an input circuit from an output circuit and filter signals; operating on the audible band of the frequency spectrum (20Hz to 20kHz).May 25, 2022
What are Audio Transformers? | CircuitBread
CircuitBread
https://www.circuitbread.com › ee-faq › what-are-audio-t...
CircuitBread
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How does frequency affect the size of a transformer?
The frequency is inversely proportional to the size of the transformer. As the increase in the frequency then the size of the transformer decreases and vice-versa.Dec 6, 2025
With the increase in supply frequency of transformer, there is - Testbook
Testbook
https://testbook.com › question-answer › with-the-increas...
Testbook
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What is the use of voice frequency transformer in communication system?
The Audio Frequency Transformer is used in electronic circuits (control, communication, measurement etc.) for stepping up the voltage or impedance matching. They are normally small in size and have iron cores. It is essential that distortion should be as low as possible.
Audio Frequency Transformer | Frequency Response - eeeguide.com
eeeguide.com
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eeeguide.com
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What is the frequency of a transformer?
Transformer Types and Frequency Ranges
| Power | |
|---|---|
| Power transformers | 50, 60, and 400 Hz |
| Carrier-frequency transformers | 20 kHz to 20 MHz |
| High-frequency transformers | 20 MHz to 1000 MHz |
| Pulse transformers | Repetition rates to 4 MHz |
Frequency Transformer - an overview | ScienceDirect Topics
ScienceDirect.com
https://www.sciencedirect.com › topics › engineering › fr...
ScienceDirect.com
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Web results
Use for NOS RadioShack transformer?
PedalPCB Community Forum
https://forum.pedalpcb.com › ... › General Questions
PedalPCB Community Forum
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Apr 8, 2024 — Frequency Range: 300 Hz to 10 kHz. Primary Impedance: 1 ... 8 Ohms. Death By Audio transformer: 42TM002. Frequency Range: 300 Hz to 3.4 kHz.Read more
Audio Transformers / Signal Transformers - Inix Electronic
inix-electronics.com
https://inix-electronics.com › passive-components › audi...
inix-electronics.com
https://inix-electronics.com › passive-components › audi...
Audio Transformers / Signal Transformers · Frequency Range : 300 Hz to 3.4 kHz · Length : 24.89 mm · Primary Impedance : 1 kOhms.Read more
Mouser - TL016 - Transformer, HI Q Magnetic, Ultra-Mini ...
electronicsurplus.com
https://www.electronicsurplus.com › mouser-tl016-transf...
electronicsurplus.com
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75mW • Frequency response: ±3dB, 300Hz-3.4KHz @ 1KHz 0dB • Waxing: vacuum treatment • Other: can be water washed with water temperature @ <20°C. • PC leads ...Read more
$1.49Out of stock