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. 756-7361
Mfr. Part No.7491181112
MYR29.91
Each
units
2.8mH 290mΩ - 8.1:1 Through Hole 175µH 21.5 x 15 x 12mm 12mm 21.5mm 15mm - - -
RS Stock No. 162-1335
Mfr. Part No.750311590
MYR37.961
Each (On a Reel of 100)
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. 756-7430
Mfr. Part No.750311567
MYR36.78
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. 163-4312
Mfr. Part No.750311604
MYR36.65
Each (On a Reel of 125)
units
8µH 0.03Ω 0.035Ω - 1:1 Surface Mount 400nH 29.08 x 23.11 x 11.43mm 11.43mm 29.08mm 23.11mm - - -
RS Stock No. 163-4304
Mfr. Part No.750311567
MYR27.24
Each (On a Reel of 250)
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. 163-4319
Mfr. Part No.750311692
MYR16.48
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. 756-7459
Mfr. Part No.750311624
MYR37.14
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. 756-7519
Mfr. Part No.750311607
MYR44.99
Each
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. 756-7484
Mfr. Part No.750311385
MYR36.26
Each
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 - - -
RS Stock No. 756-7541
Mfr. Part No.750311596
MYR55.13
Each
units
12µH 0.03Ω 0.03Ω - 1.5:1 Surface Mount 400nH 32.31 x 27.03 x 13.69mm 13.69mm 32.31mm 27.03mm - - -
RS Stock No. 163-4296
Mfr. Part No.750311305
MYR32.97
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. 163-4320
Mfr. Part No.750311771
MYR44.87
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. 756-7409
Mfr. Part No.750311486
MYR22.66
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. 163-4310
Mfr. Part No.750311597
MYR36.65
Each (On a Reel of 125)
units
6µH 0.02Ω 0.004Ω - 3:1 Surface Mount 300nH 29.08 x 23.11 x 11.43mm 11.43mm 29.08mm 23.11mm - - -
RS Stock No. 163-4307
Mfr. Part No.750311593
MYR45.221
Each (On a Reel of 100)
units
15µH 0.032Ω 0.008Ω - 3.5:1 Surface Mount 400nH 32.31 x 27.03 x 13.69mm 13.69mm 32.31mm 27.03mm - - -
RS Stock No. 163-4299
Mfr. Part No.750311385
MYR29.532
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 - - -
RS Stock No. 163-4309
Mfr. Part No.750311596
MYR44.87
Each (On a Reel of 100)
units
12µH 0.03Ω 0.03Ω - 1.5:1 Surface Mount 400nH 32.31 x 27.03 x 13.69mm 13.69mm 32.31mm 27.03mm - - -
RS Stock No. 163-4303
Mfr. Part No.750311564
MYR27.24
Each (On a Reel of 200)
units
9.07µH 0.036Ω 0.007Ω - 3:1 Surface Mount 250nH 17.75 x 13.46 x 12.7mm 12.7mm 17.75mm 13.46mm - - -
RS Stock No. 756-7373
Mfr. Part No.749118205
MYR32.68
Each
units
0.9mH 4.3Ω 26mΩ - 19:1:1 Through Hole 175µH 18 x 16.5 x 18mm 18mm 18mm 16.5mm - - -
RS Stock No. 163-4302
Mfr. Part No.750311486
MYR16.612
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 - - -