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. 163-4301
Mfr. Part No.750311457
MYR23.257
Each (On a Reel of 200)
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 - - -
RS Stock No. 163-4318
Mfr. Part No.750311691
MYR16.612
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. 800-4340
Mfr. Part No.1001C
MYR17.63
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. 756-7513
Mfr. Part No.750311608
MYR44.04
Each
units
12µH 0.03Ω 0.02Ω - 1.5:1 Surface Mount 1µH 29.08 x 23.11 x 11.43mm 11.43mm 29.08mm 23.11mm - - -
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. 756-7440
Mfr. Part No.750311564
MYR37.14
Each
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. 163-4300
Mfr. Part No.750311439
MYR21.47
Each (On a Reel of 200)
units
37µH 0.089Ω 0.028Ω - 2:1 Surface Mount 750nH 17.75 x 13.46 x 12.7mm 12.7mm 17.75mm 13.46mm - - -
RS Stock No. 167-5963
Mfr. Part No.78604/1C
MYR5.46
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. 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. 715-6885
Mfr. Part No.78253/55MC
MYR10.88
Each
units
0.83mH 1.5Ω - - 1:1.31 Surface Mount 1µH 9 x 12.7 x 6.55mm 6.55mm 9mm 12.7mm - - -
RS Stock No. 170-4968
Mfr. Part No.IT242
BrandSchaffner
MYR15.99
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. 715-6879
Mfr. Part No.78253/35C
MYR10.88
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. 883-9124
Mfr. Part No.IT370
BrandSchaffner
MYR88.214
Each (In a Pack of 300)
units
0.3mH 0.16Ω 0.18Ω - 1:1 Through Hole 6µH - - 27mm 32.2mm 40 kHz, 500 (Data Transmission) kHz - Enclosed
RS Stock No. 533-0176
Mfr. Part No.Z1640E
BrandOEP
MYR26.11
Each
units
1.9H 32Ω 42Ω 1.1dB 1:1 Through Hole 1.6mH 18 x 14.5 x 18mm 18mm 18mm 14.5mm 4kHz 200Hz -
RS Stock No. 629-9177
Mfr. Part No.76601/1C
MYR8.38
Each
units
- - - - 1:1 Through Hole - 12.7 x 8.89 x 6.35mm 6.35mm 12.7mm 8.89mm - - -
RS Stock No. 831-9327
Mfr. Part No.ATB3225-75032CT
BrandTDK
MYR7.28
Each
units
- 0.7Ω - 2dB 3:2 Surface Mount - 3.2 x 2.5 x 2.3mm 2.3mm 3.2mm 2.5mm 100MHz 5MHz -
RS Stock No. 800-4344
Mfr. Part No.1002C
MYR19.43
Each
units
3mH 1.4Ω 1.7Ω - 1:1:1 PCB Mount 9µH 15.06 x 15.06 x 15.75mm 15.75mm 15.06mm 15.06mm - - -
RS Stock No. 800-4423
Mfr. Part No.78604/1C
MYR6.232
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. 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. 106-8559
Mfr. Part No.782482/33VC
MYR6.14
Each (In a Tube of 50)
units
310µH 600mΩ - - 1:1.33 Through Hole 8µH - - 6.35mm 9.14mm - - -
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