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
MYR37.36
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
MYR30.77
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. 218-9880
Mfr. Part No.SM-LP-5001
BrandBourns
MYR8.10
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. 210-6330
Mfr. Part No.PT10E
BrandOEP
MYR40.02
Each
units
- 5.1Ω 2.6Ω - 2:1 Through Hole 115µH 15 x 15 x 16mm 16mm 15mm 15mm 1MHz 3kHz -
RS Stock No. 116-9144
Mfr. Part No.PT42E
BrandOEP
MYR16.14
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. 172-8671
Mfr. Part No.SM-LP-5001
BrandBourns
MYR5.849
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. 715-6879
Mfr. Part No.78253/35C
MYR13.26
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. 533-0176
Mfr. Part No.Z1640E
BrandOEP
MYR70.13
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. 163-4299
Mfr. Part No.750311385
MYR29.532
Each (On a Reel of 125)
units
15µH 0.02Ω 0.012Ω - 1.25:1 Surface Mount 200nH 29.08 x 23.11 x 11.43mm 11.43mm 29.08mm 23.11mm - - -
RS Stock No. 756-7430
Mfr. Part No.750311567
MYR34.17
Each
units
7µH 0.07Ω 0.023Ω - 2:1 Surface Mount 800nH 15.24 x 13.34 x 11.43mm 11.43mm 15.24mm 13.34mm - - -
RS Stock No. 106-8569
Mfr. Part No.782485/35C
MYR6.14
Each (In a Tube of 50)
units
234µH 0.5Ω - - 1:2.2 Through Hole 0.168µH - - 9.14mm 10.46mm - - -
RS Stock No. 170-4967
Mfr. Part No.IT245
BrandSchaffner
MYR15.442
Each (In a Box of 200)
units
8mH - - - 1:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
RS Stock No. 629-9199
Mfr. Part No.76601/3C
MYR8.46
Each
units
- - - - 1:1 Through Hole - 12.7 x 8.89 x 6.35mm 6.35mm 12.7mm 8.89mm - - -
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. 106-8571
Mfr. Part No.78253/55C
MYR10.718
Each (In a Tube of 50)
units
0.83mH 1.5Ω - - 1:1.31 Through Hole 1µH - - 9mm 9.52mm - - -
RS Stock No. 161-8042
Mfr. Part No.DXW21BN7511TL
MYR1.469
Each (On a Reel of 2000)
units
- - - 1dB - Surface Mount - - - 2mm 1.2mm 870MHz 50MHz Enclosed
RS Stock No. 667-5966
Mfr. Part No.LAD4613
BrandOEP
MYR35.07
Each
units
2.5mH - - - 1:1 Through Hole 0.5µH 10.16 x 8.89 x 6.35mm 6.35mm 10.16mm 8.89mm 55MHz 100kHz -
RS Stock No. 831-9321
Mfr. Part No.ATB3225-75034CT
BrandTDK
MYR6.69
Each
units
- 0.7Ω - 2dB 3:4 Surface Mount - 3.2 x 2.5 x 2.3mm 2.3mm 3.2mm 2.5mm 100MHz 1MHz -
RS Stock No. 170-4973
Mfr. Part No.IT313
BrandSchaffner
MYR50.59
Each (In a Box of 100)
units
3mH - - - 1:1:1 Through Hole - 25.5 x 25.5 x 25mm 25mm 25.5mm 25.5mm - - -
RS Stock No. 800-4340
Mfr. Part No.1001C
MYR17.61
Each
units
3mH 1.2Ω - 1:1 PCB Mount 22µH 15.06 x 15.06 x 15.75mm 15.75mm 15.06mm 15.06mm - - -