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. 163-4302
Mfr. Part No.750311486
£2.316
Each (On a Reel of 200)
Units
100µH 0.22Ω 31Ω - 1:10 Surface Mount 4.5µH 17.75 x 13.46 x 12.7mm 12.7mm 17.75mm 13.46mm - - -
RS Stock No. 756-7409
Mfr. Part No.750311486
£2.31
Each
Units
100µH 0.22Ω 31Ω - 1:10 Surface Mount 4.5µH 17.75 x 13.46 x 12.7mm 12.7mm 17.75mm 13.46mm - - -
RS Stock No. 756-7399
Mfr. Part No.750311692
£4.69
Each
Units
80µH 0.325Ω 8.7Ω - 5:1 Surface Mount 2µH 9.14 x 9.78 x 10.54mm 10.54mm 9.14mm 9.78mm - - -
RS Stock No. 163-4319
Mfr. Part No.750311692
£3.087
Each (On a Reel of 300)
Units
80µH 0.325Ω 8.7Ω - 5:1 Surface Mount 2µH 9.14 x 9.78 x 10.54mm 10.54mm 9.14mm 9.78mm - - -
RS Stock No. 756-7468
Mfr. Part No.750311911
£10.55
Each
Units
6.78µH 0.02Ω 0.45 (12-11 and 10-9) Ω, 0.47 (14-13 and 8-7) Ω - 1:3 Surface Mount 200nH 25 x 22.2 x 16mm 16mm 25mm 22.2mm - - -
RS Stock No. 756-7424
Mfr. Part No.750311307
£9.10
Each
Units
100µH 0.29Ω 0.104Ω - 2:1 Surface Mount 3µH 15.24 x 13.34 x 11.43mm 11.43mm 15.24mm 13.34mm - - -
RS Stock No. 163-4297
Mfr. Part No.750311307
£4.861
Each (On a Reel of 250)
Units
100µH 0.29Ω 0.104Ω - 2:1 Surface Mount 3µH 15.24 x 13.34 x 11.43mm 11.43mm 15.24mm 13.34mm - - -
RS Stock No. 163-4323
Mfr. Part No.750311911
£6.526
Each (In a Tray of 70)
Units
6.78µH 0.02Ω 0.45 (12-11 and 10-9) Ω, 0.47 (14-13 and 8-7) Ω - 1:3 Surface Mount 200nH 25 x 22.2 x 16mm 16mm 25mm 22.2mm - - -
RS Stock No. 163-4296
Mfr. Part No.750311305
£6.164
Each (On a Reel of 250)
Units
50µH 0.175Ω 0.028Ω - 3:1 Surface Mount 2µH 15.24 x 13.34 x 11.43mm 11.43mm 15.24mm 13.34mm - - -
RS Stock No. 756-7412
Mfr. Part No.750311305
£7.67
Each
Units
50µH 0.175Ω 0.028Ω - 3:1 Surface Mount 2µH 15.24 x 13.34 x 11.43mm 11.43mm 15.24mm 13.34mm - - -
RS Stock No. 756-7459
Mfr. Part No.750311624
£7.21
Each
Units
9µH 0.034Ω 0.021Ω - 1.5:1 Surface Mount 250nH 17.75 x 13.46 x 12.7mm 12.7mm 17.75mm 13.46mm - - -
RS Stock No. 163-4316
Mfr. Part No.750311624
£5.086
Each (On a Reel of 200)
Units
9µH 0.034Ω 0.021Ω - 1.5:1 Surface Mount 250nH 17.75 x 13.46 x 12.7mm 12.7mm 17.75mm 13.46mm - - -
RS Stock No. 756-7395
Mfr. Part No.750311691
£4.57
Each
Units
60µH 0.315Ω 7.95Ω - 1:5 Surface Mount 1µH 8.26 x 6.6 x 5.59mm 5.59mm 8.26mm 6.6mm - - -
RS Stock No. 756-7550
Mfr. Part No.750311771
£10.49
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. 163-4320
Mfr. Part No.750311771
£8.389
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. 163-4318
Mfr. Part No.750311691
£3.342
Each (On a Reel of 800)
Units
60µH 0.315Ω 7.95Ω - 1:5 Surface Mount 1µH 8.26 x 6.6 x 5.59mm 5.59mm 8.26mm 6.6mm - - -
RS Stock No. 163-4306
Mfr. Part No.750311592
£8.284
Each (On a Reel of 100)
Units
8µH 0.015Ω 0.02Ω - 1:1 Surface Mount 400nH 32.31 x 27.03 x 13.69mm 13.69mm 32.31mm 27.03mm - - -
RS Stock No. 756-7531
Mfr. Part No.750311592
£10.49
Each
Units
8µH 0.015Ω 0.02Ω - 1:1 Surface Mount 400nH 32.31 x 27.03 x 13.69mm 13.69mm 32.31mm 27.03mm - - -
RS Stock No. 163-4314
Mfr. Part No.750311607
£6.85
Each (On a Reel of 125)
Units
14µH 0.04Ω 0.01Ω - 2.5:1 Surface Mount 500nH 29.08 x 23.11 x 11.43mm 11.43mm 29.08mm 23.11mm - - -
RS Stock No. 756-7478
Mfr. Part No.750311457
£6.39
Each
Units
50µH 0.115Ω 0.012Ω - 4:1 Surface Mount 1.2µH 17.75 x 13.46 x 12.7mm 12.7mm 17.75mm 13.46mm - - -