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. 210-6302
Mfr. Part No.PT10
BrandOEP
€3.93
Each
units
115µH 5.10Ω 2.6Ω - 2:1 Through Hole - 13 x 13 x 15mm 15mm 13mm 13mm 1MHz 3kHz -
RS Stock No. 106-8560
Mfr. Part No.782482/53VC
€1.268
Each (In a Tube of 50)
units
260µH 600mΩ - - 1.14:1 Through Hole 8µH - - 6.35mm 9.14mm - - -
RS Stock No. 178-9748
Mfr. Part No.IT314
BrandSchaffner
€14.25
Each
units
35mH - - - 3:1:1 Through Hole - 25.5 x 25.5 x 25mm 25mm 25.5mm 25.5mm - - -
RS Stock No. 170-4980
Mfr. Part No.IT314
BrandSchaffner
€9.135
Each (In a Box of 100)
units
35mH - - - 3:1:1 Through Hole - 25.5 x 25.5 x 25mm 25mm 25.5mm 25.5mm - - -
RS Stock No. 210-6223
Mfr. Part No.OEP1200
BrandOEP
€6.83
Each
units
4.15H 65Ω 65Ω 1.3dB 1:1 Through Hole 20mH 18 x 18 x 12.5mm 12.5mm 18mm 18mm 4kHz 300Hz -
RS Stock No. 163-4320
Mfr. Part No.750311771
€8.874
Each (On a Reel of 100)
units
500µH 0.45Ω 0.05Ω - 6:1 Surface Mount 10µH 32.31 x 27.03 x 13.69mm 13.69mm 32.31mm 27.03mm - - -
RS Stock No. 715-6905
Mfr. Part No.782482/53VC
€1.76
Each
units
260µH 600mΩ - - 1.14:1 Through Hole 8µH 9.77 x 9.14 x 6.35mm 9.77mm 6.35mm 9.14mm - - -
RS Stock No. 756-7550
Mfr. Part No.750311771
€15.15
Each
units
500µH 0.45Ω 0.05Ω - 6:1 Surface Mount 10µH 32.31 x 27.03 x 13.69mm 13.69mm 32.31mm 27.03mm - - -
RS Stock No. 210-6330
Mfr. Part No.PT10E
BrandOEP
€6.37
Each
units
- 5.1Ω 2.6Ω - 2:1 Through Hole 115µH 15 x 15 x 16mm 16mm 15mm 15mm 1MHz 3kHz -
RS Stock No. 173-6384
Mfr. Part No.IT255
BrandSchaffner
€4.99
Each
units
22mH - - - 1:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
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. 170-9232
Mfr. Part No.76601/2C
€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. 116-9144
Mfr. Part No.PT42E
BrandOEP
€5.11
Each
units
3mH 0.8Ω 0.8Ω - 1:1 Through Hole 85µH 13 x 13 x 15mm 15mm 13mm 13mm 1MHz 3kHz -
RS Stock No. 218-9852
Mfr. Part No.IT243
BrandSchaffner
€5.28
Each
units
2.5mH - - - 1:1:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
RS Stock No. 163-4308
Mfr. Part No.750311594
€9.479
Each (On a Reel of 100)
units
15µH 0.035Ω 0.015Ω - 2.33:1 Surface Mount 550nH 32.31 x 27.03 x 13.69mm 13.69mm 32.31mm 27.03mm - - -
RS Stock No. 173-6340
Mfr. Part No.IT245
BrandSchaffner
€4.99
Each
units
8mH - - - 1:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
RS Stock No. 106-8557
Mfr. Part No.1001C
€3.497
Each (In a Tube of 30)
units
3mH 1.2Ω - 1:1 PCB Mount 22µH - - 15.06mm 15.06mm - - -
RS Stock No. 172-8671
Mfr. Part No.SM-LP-5001
BrandBourns
€1.223
Each (In a Bag of 53)
units
3.8H - - 2dB 1:1 Surface Mount 6mH 9.6 x 7.36 x 14mm 14mm 9.6mm 7.36mm 4kHz 0.2kHz -
RS Stock No. 715-6882
Mfr. Part No.78253/35MVC
€3.05
Each
units
142µH 0.5Ω - - 1:2.14 Surface Mount 5µH 9 x 12.7 x 6.55mm 6.55mm 9mm 12.7mm - - -
RS Stock No. 196-454
Mfr. Part No.PT8
BrandOEP
€4.12
Each
units
- - - - 2:1+1 Through Hole - 13 x 13 x 15mm 15mm 13mm 13mm 1MHz 3kHz -