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. 106-8570
Mfr. Part No.78250C
SGD3.658
Each (In a Tube of 50)
units
2mH - 0.042361111111 Through Hole 3µH - - 9mm 10.19mm - - Enclosed
RS Stock No. 106-8818
Mfr. Part No.76253/55ENC
SGD6.59
Each (In a Tube of 30)
units
2mH 0.9Ω - - 1:1.33 Through Hole 10µH - - 15mm 15mm - - -
RS Stock No. 715-6920
Mfr. Part No.76250ENC
SGD6.62
Each
units
2mH - - 1:1 Through Hole 40µH 15 x 15 x 12.5mm 12.5mm 15mm 15mm - - -
RS Stock No. 544-2471
Mfr. Part No.78250C
SGD3.87
Each
units
2mH - 1:1 Through Hole 3µH 9 x 10.19 x 6.35mm 6.35mm 9mm 10.19mm - - Enclosed
RS Stock No. 106-8557
Mfr. Part No.1001C
SGD6.118
Each (In a Tube of 30)
units
3mH 1.2Ω - 1:1 PCB Mount 22µH - - 15.06mm 15.06mm - - -
RS Stock No. 800-4340
Mfr. Part No.1001C
SGD6.72
Each
units
3mH 1.2Ω - 1:1 PCB Mount 22µH 15.06 x 15.06 x 15.75mm 15.75mm 15.06mm 15.06mm - - -
RS Stock No. 106-8817
Mfr. Part No.76250ENC
SGD6.59
Each (In a Tube of 30)
units
2mH - - 1:1 Through Hole 40µH - - 15mm 15mm - - -
RS Stock No. 715-6927
Mfr. Part No.76253/55ENC
SGD6.49
Each
units
2mH 0.9Ω - - 1:1.33 Through Hole 10µH 15 x 15 x 12.5mm 12.5mm 15mm 15mm - - -
RS Stock No. 715-6876
Mfr. Part No.78253/55C
SGD4.01
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. 800-4423
Mfr. Part No.78604/1C
SGD2.28
Each (In a Bag of 5)
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. 629-9177
Mfr. Part No.76601/1C
SGD3.09
Each
units
- - - - 1:1 Through Hole - 12.7 x 8.89 x 6.35mm 6.35mm 12.7mm 8.89mm - - -
RS Stock No. 170-9232
Mfr. Part No.76601/2C
SGD3.131
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. 170-9324
Mfr. Part No.78602/9JC
SGD2.26
Each (On a Reel of 50)
units
10000µH 1.8Ω - - 1:1:1 Surface Mount 0.71µH - - 9.52mm 9mm - - Enclosed
RS Stock No. 170-9231
Mfr. Part No.76601/1C
SGD3.131
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. 161-8042
Mfr. Part No.DXW21BN7511TL
SGD0.503
Each (On a Reel of 2000)
units
- - - 1dB - Surface Mount - - - 2mm 1.2mm 870MHz 50MHz Enclosed
RS Stock No. 715-6908
Mfr. Part No.782485/55C
SGD3.05
Each
units
513µH 0.6Ω - - 1:1.5 Through Hole 0.192µH 9.14 x 10.46 x 6.35mm 6.35mm 9.14mm 10.46mm - - -
RS Stock No. 106-8571
Mfr. Part No.78253/55C
SGD4.039
Each (In a Tube of 50)
units
0.83mH 1.5Ω - - 1:1.31 Through Hole 1µH - - 9mm 9.52mm - - -
RS Stock No. 106-8563
Mfr. Part No.78253/35MC
SGD4.039
Each (In a Tube of 50)
units
0.38mH - - 1:2.27 Surface Mount 1µH - - 9mm 12.7mm - - -
RS Stock No. 106-8566
Mfr. Part No.78253/55MVC
SGD4.93
Each (In a Tube of 50)
units
240µH 0.6Ω - - 1:1.31 Surface Mount 8µH - - 9mm 12.7mm - - -
RS Stock No. 629-9183
Mfr. Part No.76601/2C
SGD3.28
Each
units
- - - - 1:1 Through Hole - 12.7 x 8.89 x 6.35mm 6.35mm 12.7mm 8.89mm - - -