Audio Transformers

Audio Transformers are transformers designed to be used in the amplifiers and high-frequency audio and voice circuits, for coupling ad impendence matching applications. The transformers allow an AC input signal to produce a related AC output signal without the input and the output being physically connected together. This is accomplished by having two or more coils of insulated wire wound around a magnetic metal core. When the AC signal passes through the input winding, a related AC signal appears on the output winding via the inductive coupling. Audio Transformers perform several functions: They can step up (increase) or step down (decrease) a signal voltage They can increase or decrease the impedance of circuit Convert the circuit from unbalanced to balanced and from balanced to unbalanced Block DC current in a circuit while allowing the AC current flow They electrically isolate one audio device from anotherThere are two main types of transformers: Step-up / Step-down transformers – The primary and the secondary coils have a different number of windings, that means they have different impedances. Different impedances cause the signal level changed as it goes through the transformer. 1:1 transformers – Each coil has exactly the same number of windings which makes the impedance identical. This transformer doesnt change the signal level but guarantees the physical electrical insulation between coils. These transformers are usually called Isolation Transformers.

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Description Price Primary Impedance Secondary Impedance Primary DC Resistance Power Rating Current Rating Secondary DC Resistance Dimensions Mounting Type Termination Type Weight Depth Diameter Length Width
RS Stock No. 106-8578
Mfr. Part No.DA101C
kr 12,459
Each (In a Tube of 50)
Units
- - - - - - 9 x 6.35 x 10.16mm Through Hole - - 10.16mm - 9mm 6.35mm
RS Stock No. 715-6914
Mfr. Part No.DA101C
kr 13,36
Each
Units
- - - - - - 9 x 6.35 x 10.16mm Through Hole - - 10.16mm - 9mm 6.35mm
RS Stock No. 123-7209
Mfr. Part No.A262A45E/1
BrandOEP
kr 176,77
Each
Units
200 Ω, 800 Ω 5 kΩ, 20 kΩ 24Ω 100mW - 1.076Ω 27.94 x 22.9 x 22.2mm Through Hole PC Pin 40g 22.2mm - 27.94mm 22.9mm
RS Stock No. 667-6044
Mfr. Part No.Z21805C
BrandOEP
kr 179,66
Each
Units
500Ω 1kΩ 37Ω - - 172Ω 25 x 19.3 x 18.5mm Surface Mount - 28g 18.5mm - 25mm 19.3mm
RS Stock No. 210-6403
Mfr. Part No.A262A1E
BrandOEP
kr 166,70
Each
Units
150Ω 3.75Ω 10.3Ω - - 0.37Ω 27.94 x 22 x 22.9mm Through Hole - - 22.9mm - 27.94mm 22mm
RS Stock No. 667-6050
Mfr. Part No.Z21808C
BrandOEP
kr 179,66
Each
Units
150Ω - 45Ω - - 1.5kΩ 25 x 18.5 x 19.3mm Through Hole - - 19.3mm - 25mm 18.5mm
RS Stock No. 667-6066
Mfr. Part No.Z218A3C
BrandOEP
kr 150,95
Each
Units
1.8 kΩ, 600 Ω - 47Ω - - 1.34 kΩ, 1.46 kΩ 25.2 x 17.8 x 19mm Through Hole - - 19mm - 25.2mm 17.8mm
RS Stock No. 800-4347
Mfr. Part No.DA101MC
kr 13,46
Each
Units
- - - - - - 9.52 x 9 x 6.35mm Surface Mount - 0.9g 6.35mm - 9.52mm 9mm
RS Stock No. 667-5962
Mfr. Part No.CN006
BrandOEP
kr 138,08
Each
Units
- - - - - - 34.7 x 15.5 x 28.2mm - - - 28.2mm - 34.7mm 15.5mm
RS Stock No. 106-8577
Mfr. Part No.DA103C
kr 12,459
Each (In a Tube of 50)
Units
- - - - - - 9 x 6.35 x 10.16mm Through Hole - - 10.16mm - 9mm 6.35mm
RS Stock No. 123-7218
Mfr. Part No.Z1670E
BrandOEP
kr 89,43
Each
Units
50Ω 50Ω 10.3Ω 2mW - 13.3Ω 18 x 18 x 15mm Through Hole PC Pin 14g 15mm - 18mm 18mm
RS Stock No. 123-7204
Mfr. Part No.A187A16C/1
BrandOEP
kr 330,21
Each
Units
30 Ω, 100 Ω 10 kΩ, 49 kΩ 19Ω - - 647Ω 29.4 x 25 x 24.2mm Through Hole PC Pin 56g 24.2mm - 29.4mm 25mm
RS Stock No. 123-7211
Mfr. Part No.A262A48E
BrandOEP
kr 176,77
Each
Units
150 Ω, 600 Ω 1.25 kΩ, 5 kΩ 20.6Ω 100mW - 220Ω 27.94 x 22.9 x 22.2mm Through Hole PC Pin 40g 22.2mm - 27.94mm 22.9mm
RS Stock No. 106-8576
Mfr. Part No.DA101MC
kr 12,799
Each (In a Tube of 50)
Units
- - - - - - 9.52 x 9 x 6.35mm Surface Mount - 0.9g 6.35mm - 9.52mm 9mm
RS Stock No. 715-6911
Mfr. Part No.DA103C
kr 13,36
Each
Units
- - - - - - 9 x 6.35 x 10.16mm Through Hole - - 10.16mm - 9mm 6.35mm
RS Stock No. 123-7227
Mfr. Part No.Z1681E
BrandOEP
kr 90,93
Each
Units
150Ω 300Ω 29.5Ω 2mW - 52.2Ω 18 x 18 x 15mm Through Hole PC Pin 14g 15mm - 18mm 18mm
RS Stock No. 210-6425
Mfr. Part No.A262A3E
BrandOEP
kr 188,93
Each
Units
150Ω 600Ω 20.6Ω 1mW Hz @ 30, 100mW Hz @ 300 - 1143Ω 28 x 22 x 23.2mm Through Hole Pin - 23.2mm - 28mm 22mm
RS Stock No. 210-6481
Mfr. Part No.TF021
BrandOEP
kr 128,21
Each
Units
- 0.39Ω 2W - 0.47Ω 65 x 40 x 37mm Chassis Mount - 130g 37mm - 65mm 40mm
RS Stock No. 168-3120
Mfr. Part No.749196348
kr 51,003
Each (On a Reel of 300)
Units
- - 145mΩ - 830mA - 17.5 x 16 x 9mm Surface Mount Solder - 9mm - 17.5mm 16mm
RS Stock No. 123-7205
Mfr. Part No.A187A17C
BrandOEP
kr 281,35
Each
Units
200Ω 600Ω 11.5Ω - - 42Ω 29.4 x 25 x 24.2mm Through Hole PC Pin 56g 24.2mm - 29.4mm 25mm
Related Products
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Description:
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CUI30 pro audio transformers from OEP feature a low profile, encapsulated construction. Suitable for PCB mounting, these transformers can be used as line output transformers or isolating transformers.CUI30A02E (123-7238) has been designed for 70 Ω and 600 Ω applications and ...
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A 1:1 ratio transformer suitable for isolating 3Ω ...
Description:
A 1:1 ratio transformer suitable for isolating 3Ω speakers but giving good results up to 15Ω.