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. 173-6435
Mfr. Part No.IT313
BrandSchaffner
SGD22.66
Each
units
3mH - - - 1:1:1 Through Hole - 25.5 x 25.5 x 25mm 25mm 25.5mm 25.5mm - - -
RS Stock No. 170-4973
Mfr. Part No.IT313
BrandSchaffner
SGD14.52
Each (In a Box of 100)
units
3mH - - - 1:1:1 Through Hole - 25.5 x 25.5 x 25mm 25mm 25.5mm 25.5mm - - -
RS Stock No. 173-6407
Mfr. Part No.IT248
BrandSchaffner
SGD9.85
Each
units
17mH - - - 2:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
RS Stock No. 170-4970
Mfr. Part No.IT253
BrandSchaffner
SGD5.79
Each (In a Box of 200)
units
1.1mH - - - 1:1:1 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
SGD7.75
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. 178-9748
Mfr. Part No.IT314
BrandSchaffner
SGD23.92
Each
units
35mH - - - 3:1:1 Through Hole - 25.5 x 25.5 x 25mm 25mm 25.5mm 25.5mm - - -
RS Stock No. 883-9092
Mfr. Part No.IT155
BrandSchaffner
SGD7.634
Each (In a Pack of 100)
units
5mH 1.2Ω 1.2Ω - 1:1 Through Hole 85µH - - 27mm 22.5mm 40 kHz, 500 (Data Transmission) kHz - Enclosed
RS Stock No. 170-4968
Mfr. Part No.IT242
BrandSchaffner
SGD5.79
Each (In a Box of 200)
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. 170-4972
Mfr. Part No.IT258
BrandSchaffner
SGD9.595
Each (In a Box of 200)
units
2.5mH - - - 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
SGD5.49
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. 173-6384
Mfr. Part No.IT255
BrandSchaffner
SGD8.49
Each
units
22mH - - - 1:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
RS Stock No. 883-9121
Mfr. Part No.IT364
BrandSchaffner
SGD97.82
Each (In a Pack of 48)
units
1.5mH 0.16Ω 0.14Ω - 1:1 Through Hole 10µH - - 50mm 50mm 40 kHz, 500 (Data Transmission) kHz - Enclosed
RS Stock No. 173-6340
Mfr. Part No.IT245
BrandSchaffner
SGD9.46
Each
units
8mH - - - 1:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
RS Stock No. 173-6429
Mfr. Part No.IT258
BrandSchaffner
SGD16.29
Each
units
2.5mH - - - 1:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
RS Stock No. 883-9095
Mfr. Part No.IT213
BrandSchaffner
SGD12.61
Each (In a Pack of 100)
units
6.5mH 1.4Ω 1.4Ω - 1:1:1 Through Hole 20µH - - 19mm - 40 kHz, 500 (Data Transmission) kHz - Enclosed
RS Stock No. 162-0595
Mfr. Part No.IT243
BrandSchaffner
SGD5.79
Each (In a Box of 200)
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. 170-4969
Mfr. Part No.IT255
BrandSchaffner
SGD6.074
Each (In a Box of 200)
units
22mH - - - 1:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
RS Stock No. 218-9852
Mfr. Part No.IT243
BrandSchaffner
SGD9.95
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. 170-4971
Mfr. Part No.IT248
BrandSchaffner
SGD6.735
Each (In a Box of 200)
units
17mH - - - 2:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
RS Stock No. 883-9099
Mfr. Part No.IT233
BrandSchaffner
SGD7.03
Each (In a Pack of 100)
units
3mH 0.8Ω 0.8Ω - 1:1:1 Through Hole 45µH - - 27mm 22.5mm 40 kHz, 500 (Data Transmission) kHz - Enclosed