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. 196-375
Mfr. Part No.PT6
BrandOEP
MYR35.57
Each
units
3mH 1.1Ω 0.9Ω - 1:1 Through Hole 19µH 13 x 13 x 15mm 15mm 13mm 13mm 1MHz 3kHz -
RS Stock No. 210-6318
Mfr. Part No.PT4E
BrandOEP
MYR20.95
Each
units
3mH 1.1Ω 0.9Ω - 1:1 Through Hole 19µH 15 x 15 x 16mm 16mm 15mm 15mm 1MHz 3kHz -
RS Stock No. 210-6330
Mfr. Part No.PT10E
BrandOEP
MYR16.92
Each
units
- 5.1Ω 2.6Ω - 2:1 Through Hole 115µH 15 x 15 x 16mm 16mm 15mm 15mm 1MHz 3kHz -
RS Stock No. 218-9880
Mfr. Part No.SM-LP-5001
BrandBourns
MYR8.42
Each
units
3.8H 115Ω 115Ω 2dB 1:1 Surface Mount 6mH 9.6 x 7.36 x 14mm 14mm 9.6mm 7.36mm 4kHz 0.2kHz -
RS Stock No. 172-8671
Mfr. Part No.SM-LP-5001
BrandBourns
MYR5.77
Each (In a Bag of 53)
units
3.8H - - 2dB 1:1 Surface Mount 6mH 9.6 x 7.36 x 14mm 14mm 9.6mm 7.36mm 4kHz 0.2kHz -
RS Stock No. 116-9144
Mfr. Part No.PT42E
BrandOEP
MYR17.94
Each
units
3mH 0.8Ω 0.8Ω - 1:1 Through Hole 85µH 13 x 13 x 15mm 15mm 13mm 13mm 1MHz 3kHz -
RS Stock No. 756-7531
Mfr. Part No.750311592
MYR54.14
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. 756-7468
Mfr. Part No.750311911
MYR43.25
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. 210-6273
Mfr. Part No.OEP8000
BrandOEP
MYR36.73
Each
units
3.6H 111Ω 111Ω 4dB 1:1 Surface Mount 4100µH 9 x 7.3 x 14.2mm 14.2mm 9mm 7.3mm 4kHz 200Hz -
RS Stock No. 173-6384
Mfr. Part No.IT255
BrandSchaffner
MYR23.68
Each
units
22mH - - - 1:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
RS Stock No. 210-6251
Mfr. Part No.Z1260
BrandOEP
MYR38.90
Each
units
- 65Ω 65Ω 1.5dB 1:1 Through Hole - 19 x 11 x 15mm 15mm 19mm 11mm - - -
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 - - -
RS Stock No. 756-7399
Mfr. Part No.750311692
MYR22.50
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. 163-4315
Mfr. Part No.750311608
MYR36.65
Each (On a Reel of 125)
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. 905-5018
Mfr. Part No.78602/9JC
MYR6.42
Each
units
10000µH 1.8Ω - - 1:1:1 Surface Mount 0.71µH - - 9.52mm 9mm - - Enclosed
RS Stock No. 210-6302
Mfr. Part No.PT10
BrandOEP
MYR28.34
Each
units
115µH 5.10Ω 2.6Ω - 2:1 Through Hole - 13 x 13 x 15mm 15mm 13mm 13mm 1MHz 3kHz -
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. 173-6429
Mfr. Part No.IT258
BrandSchaffner
MYR39.67
Each
units
2.5mH - - - 1:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
RS Stock No. 756-7412
Mfr. Part No.750311305
MYR39.89
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. 163-4305
Mfr. Part No.750311591
MYR44.87
Each (On a Reel of 100)
units
8µH 0.015Ω 0.012Ω - 1.5:1 Surface Mount 400nH 32.31 x 27.03 x 13.69mm 13.69mm 32.31mm 27.03mm - - -
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