Telecom Transformers

Telecom transformers can serve a variety of roles. For example, they can function as isolation transformers, preparing the voltage before transmission across telecom cables or adjusting the voltage so that it is suitable for a low-voltage application inside the home.

What are telecom transformers used for?

The telecom transformer is one of the most common and vital components in any telecommunications system. Other types of equipment, such as resistors and capacitors, are sometimes used to achieve the same goals that a telecom transformer achieves. However, telecom transformers perform these tasks with a greater degree of efficiency and ease of use, and thus are more commonly used than their alternatives.

Types of telecom transformers

Telecom transformers are designed with different types of inductance, mounting styles and other specifications that dictate whether those devices will be appropriate for a given application or use in a given device.

They can be mounted in different ways. Some designs are surface mounted, while others are mounted through the holes in a breadboard.


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Description Price Primary Inductance Primary DC Resistance Secondary DC Resistance Insertion Loss Turns Ratio Mounting Type Leakage Inductance Dimensions Depth Length Width Maximum Operating Frequency Minimum Operating Frequency Construction
RS Stock No. 167-4838
Mfr. Part No.DXW21BN7511SL
BrandMurata
€0.318
Each (On a Reel of 2000)
units
- 75Ω 75Ω 1.4dB 1:1 Surface Mount - 2 x 1.2 x 1.2mm 1.2mm 2mm 1.2mm - - -
RS Stock No. 667-5966
Mfr. Part No.LAD4613
BrandOEP
€5.70
Each
units
2.5mH - - - 1:1 Through Hole 0.5µH 10.16 x 8.89 x 6.35mm 6.35mm 10.16mm 8.89mm 55MHz 100kHz -
RS Stock No. 173-6384
Mfr. Part No.IT255
BrandSchaffner
€4.89
Each
units
22mH - - - 1:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
RS Stock No. 756-7529
Mfr. Part No.750311590
€11.29
Each
units
8µH 0.015Ω 0.008Ω - 2:1 Surface Mount 400nH 32.31 x 27.03 x 13.69mm 13.69mm 32.31mm 27.03mm - - -
RS Stock No. 629-9177
Mfr. Part No.76601/1C
€1.72
Each
units
- - - - 1:1 Through Hole - 12.7 x 8.89 x 6.35mm 6.35mm 12.7mm 8.89mm - - -
RS Stock No. 170-9231
Mfr. Part No.76601/1C
€1.611
Each (On a Reel of 50)
units
- - - - 1:1 Through Hole - 12.7 x 8.89 x 6.35mm 6.35mm 12.7mm 8.89mm - - -
RS Stock No. 533-0160
Mfr. Part No.Z1258E
BrandOEP
€6.17
Each
units
2H 45Ω 45Ω 1.1dB 1:1 Through Hole 6mH 19 x 15 x 11.3mm 11.3mm 19mm 15mm - - -
RS Stock No. 173-6435
Mfr. Part No.IT313
BrandSchaffner
€12.93
Each
units
3mH - - - 1:1:1 Through Hole - 25.5 x 25.5 x 25mm 25mm 25.5mm 25.5mm - - -
RS Stock No. 839-0913
Mfr. Part No.DXW21BN7511SL
BrandMurata
€0.67
Each (In a Bag of 5)
units
- 75Ω 75Ω 1.4dB 1:1 Surface Mount - 2 x 1.2 x 1.2mm 1.2mm 2mm 1.2mm - - -
RS Stock No. 756-7430
Mfr. Part No.750311567
€7.99
Each
units
7µH 0.07Ω 0.023Ω - 2:1 Surface Mount 800nH 15.24 x 13.34 x 11.43mm 11.43mm 15.24mm 13.34mm - - -
RS Stock No. 170-4967
Mfr. Part No.IT245
BrandSchaffner
€3.322
Each (In a Box of 200)
units
8mH - - - 1:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
RS Stock No. 883-9083
Mfr. Part No.IT143
BrandSchaffner
€4.341
Each (In a Pack of 100)
units
15mH - 1:1:1 Through Hole 200µH - - 27mm 22.5mm 40 kHz, 500 (Data Transmission) kHz - Enclosed
RS Stock No. 163-4305
Mfr. Part No.750311591
€9.479
Each (On a Reel of 100)
units
8µH 0.015Ω 0.012Ω - 1.5:1 Surface Mount 400nH 32.31 x 27.03 x 13.69mm 13.69mm 32.31mm 27.03mm - - -
RS Stock No. 167-5963
Mfr. Part No.78604/1C
€1.25
Each (In a Tube of 50)
units
2000µH 0.6Ω - - 2:1 Through Hole 0.99µH 9.52 x 9 x 6.35mm 6.35mm 9.52mm 9mm - - -
RS Stock No. 109-4149
Mfr. Part No.ATB322524-0110
BrandTDK
€0.647
Each (On a Reel of 1000)
units
7µH 0.5Ω 60Ω - 0.0008125 Surface Mount 0.4µH - - 3.2mm 2.5mm - - -
RS Stock No. 800-4423
Mfr. Part No.78604/1C
€1.328
Each (In a Bag of 5)
units
2000µH 0.6Ω - - 2:1 Through Hole 0.99µH 9.52 x 9 x 6.35mm 6.35mm 9.52mm 9mm - - -
RS Stock No. 715-6860
Mfr. Part No.78250MC
€2.23
Each
units
2mH - - Surface Mount 3µH 9 x 12.7 x 6.65mm 6.65mm 9mm 12.7mm - - -
RS Stock No. 106-8562
Mfr. Part No.78250MC
€2.083
Each (In a Tube of 50)
units
2mH - - Surface Mount 3µH - - 9mm 12.7mm - - -
RS Stock No. 210-6273
Mfr. Part No.OEP8000
BrandOEP
€7.45
Each
units
3.6H 111Ω 111Ω 4dB 1:1 Surface Mount 4100µH 9 x 7.3 x 14.2mm 14.2mm 9mm 7.3mm 4kHz 200Hz -
RS Stock No. 163-4299
Mfr. Part No.750311385
€6.438
Each (On a Reel of 125)
units
15µH 0.02Ω 0.012Ω - 1.25:1 Surface Mount 200nH 29.08 x 23.11 x 11.43mm 11.43mm 29.08mm 23.11mm - - -
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