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. 715-6901
Mfr. Part No.782482/33VC
MYR8.59
Each
units
310µH 600mΩ - - 1:1.33 Through Hole 8µH 9.77 x 9.14 x 6.35mm 9.77mm 6.35mm 9.14mm - - -
RS Stock No. 667-5940
Mfr. Part No.PT6SM
BrandOEP
MYR24.75
Each
units
3mH 0.65Ω 0.55Ω - 1:1:1 Surface Mount 1.8 μH, 3.5 μH 13.1 x 17 x 11.95mm 11.95mm 13.1mm 17mm - - -
RS Stock No. 170-4971
Mfr. Part No.IT248
BrandSchaffner
MYR16.85
Each (In a Box of 200)
units
17mH - - - 2:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
RS Stock No. 162-1335
Mfr. Part No.750311590
MYR41.23
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. 173-6340
Mfr. Part No.IT245
BrandSchaffner
MYR23.68
Each
units
8mH - - - 1:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
RS Stock No. 756-7474
Mfr. Part No.750311439
MYR29.24
Each
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. 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. 163-4305
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 - - -
RS Stock No. 106-8567
Mfr. Part No.78253/55VC
MYR13.37
Each (In a Tube of 50)
units
240µH 0.6Ω - - 1:1.31 Through Hole 8µH - - 9mm 9.52mm - - -
RS Stock No. 210-6346
Mfr. Part No.PT8E
BrandOEP
MYR40.02
Each
units
- 4.2Ω - 2:1+1 Through Hole 30µH 15 x 15 x 16mm 16mm 15mm 15mm 1MHz 3kHz -
RS Stock No. 163-4314
Mfr. Part No.750311607
MYR36.65
Each (On a Reel of 125)
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. 196-369
Mfr. Part No.PT4
BrandOEP
MYR21.82
Each
units
19µH 1.1Ω 0.9Ω - 1:1 Through Hole 19µH 13 x 13 x 15mm 15mm 13mm 13mm 1MHz 3kHz -
RS Stock No. 106-8557
Mfr. Part No.1001C
MYR17.22
Each (In a Tube of 30)
units
3mH 1.2Ω - 1:1 PCB Mount 22µH - - 15.06mm 15.06mm - - -
RS Stock No. 210-6245
Mfr. Part No.Z1612E
BrandOEP
MYR42.03
Each
units
- 68Ω 68Ω 1.5dB 1:1 Through Hole - 18 x 12.5 x 18mm 18mm 18mm 12.5mm - - -
RS Stock No. 106-8560
Mfr. Part No.782482/53VC
MYR6.14
Each (In a Tube of 50)
units
260µH 600mΩ - - 1.14:1 Through Hole 8µH - - 6.35mm 9.14mm - - -
RS Stock No. 173-6407
Mfr. Part No.IT248
BrandSchaffner
MYR26.34
Each
units
17mH - - - 2:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
RS Stock No. 756-7500
Mfr. Part No.750311599
MYR44.99
Each
units
8µH 0.03Ω 0.012Ω - 1.5:1 Surface Mount 1µH 29.08 x 23.11 x 11.43mm 11.43mm 29.08mm 23.11mm - - -
RS Stock No. 106-8562
Mfr. Part No.78250MC
MYR10.31
Each (In a Tube of 50)
units
2mH - - Surface Mount 3µH - - 9mm 12.7mm - - -
RS Stock No. 839-0904
Mfr. Part No.DXP18BN5014TL
BrandMurata
MYR2.90
Each (In a Bag of 5)
units
- 50Ω 200Ω 1.5dB 1:2 Surface Mount - 1.6 x 0.8 x 0.45mm 0.45mm 1.6mm 0.8mm 870MHz 50MHz -
RS Stock No. 170-9231
Mfr. Part No.76601/1C
MYR7.98
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 - - -