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. 106-8563
Mfr. Part No.78253/35MC
$4.235
Each (In a Tube of 50)
units
0.38mH - - 1:2.27 Surface Mount 1µH - - 9mm 12.7mm - - -
RS Stock No. 715-6872
Mfr. Part No.78253/35MC
$4.40
Each
units
0.38mH - - 1:2.27 Surface Mount 1µH 9 x 12.7 x 6.55mm 6.55mm 9mm 12.7mm - - -
RS Stock No. 544-2471
Mfr. Part No.78250C
$3.92
Each
units
2mH - 1:1 Through Hole 3µH 9 x 10.19 x 6.35mm 6.35mm 9mm 10.19mm - - Enclosed
RS Stock No. 106-8570
Mfr. Part No.78250C
$4.17
Each (In a Tube of 50)
units
2mH - 0.042361111111 Through Hole 3µH - - 9mm 10.19mm - - Enclosed
RS Stock No. 715-6927
Mfr. Part No.76253/55ENC
$7.39
Each
units
2mH 0.9Ω - - 1:1.33 Through Hole 10µH 15 x 15 x 12.5mm 12.5mm 15mm 15mm - - -
RS Stock No. 629-9183
Mfr. Part No.76601/2C
$3.61
Each
units
- - - - 1:1 Through Hole - 12.7 x 8.89 x 6.35mm 6.35mm 12.7mm 8.89mm - - -
RS Stock No. 170-9324
Mfr. Part No.78602/9JC
$2.48
Each (On a Reel of 50)
units
10000µH 1.8Ω - - 1:1:1 Surface Mount 0.71µH - - 9.52mm 9mm - - Enclosed
RS Stock No. 106-8566
Mfr. Part No.78253/55MVC
$5.50
Each (In a Tube of 50)
units
240µH 0.6Ω - - 1:1.31 Surface Mount 8µH - - 9mm 12.7mm - - -
RS Stock No. 715-6898
Mfr. Part No.782485/35C
$3.70
Each
units
234µH 0.5Ω - - 1:2.2 Through Hole 0.168µH 9.14 x 10.46 x 6.35mm 6.35mm 9.14mm 10.46mm - - -
RS Stock No. 106-8572
Mfr. Part No.78253/35C
$4.235
Each (In a Tube of 50)
units
0.38mH - - 1:2.27 Through Hole 1µH - - 9mm 9.52mm - - -
RS Stock No. 629-9199
Mfr. Part No.76601/3C
$3.61
Each
units
- - - - 1:1 Through Hole - 12.7 x 8.89 x 6.35mm 6.35mm 12.7mm 8.89mm - - -
RS Stock No. 905-5018
Mfr. Part No.78602/9JC
$2.60
Each
units
10000µH 1.8Ω - - 1:1:1 Surface Mount 0.71µH - - 9.52mm 9mm - - Enclosed
RS Stock No. 106-8569
Mfr. Part No.782485/35C
$2.48
Each (In a Tube of 50)
units
234µH 0.5Ω - - 1:2.2 Through Hole 0.168µH - - 9.14mm 10.46mm - - -
RS Stock No. 715-6879
Mfr. Part No.78253/35C
$4.40
Each
units
0.38mH - - 1:2.27 Through Hole 1µH 9 x 9.52 x 6.35mm 6.35mm 9mm 9.52mm - - -
RS Stock No. 167-5963
Mfr. Part No.78604/1C
$2.48
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. 715-6876
Mfr. Part No.78253/55C
$4.40
Each
units
0.83mH 1.5Ω - - 1:1.31 Through Hole 1µH 9 x 9.52 x 6.35mm 6.35mm 9mm 9.52mm - - -
RS Stock No. 715-6905
Mfr. Part No.782482/53VC
$3.47
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. 106-8560
Mfr. Part No.782482/53VC
$2.519
Each (In a Tube of 50)
units
260µH 600mΩ - - 1.14:1 Through Hole 8µH - - 6.35mm 9.14mm - - -
RS Stock No. 106-8818
Mfr. Part No.76253/55ENC
$7.348
Each (In a Tube of 30)
units
2mH 0.9Ω - - 1:1.33 Through Hole 10µH - - 15mm 15mm - - -
RS Stock No. 106-8571
Mfr. Part No.78253/55C
$4.17
Each (In a Tube of 50)
units
0.83mH 1.5Ω - - 1:1.31 Through Hole 1µH - - 9mm 9.52mm - - -