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. 106-8559
Mfr. Part No.782482/33VC
€1.262
Each (In a Tube of 50)
units
310µH 600mΩ - - 1:1.33 Through Hole 8µH - - 6.35mm 9.14mm - - -
RS Stock No. 883-9124
Mfr. Part No.IT370
BrandSchaffner
€13.837
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. 106-8565
Mfr. Part No.78253/55MC
€2.083
Each (In a Tube of 50)
units
0.83mH 1.5Ω - - 1:1.31 Surface Mount 1µH - - 9mm 12.7mm - - -
RS Stock No. 629-9177
Mfr. Part No.76601/1C
€1.72
Each
units
- - - - 1:1 Through Hole - 12.7 x 8.89 x 6.35mm 6.35mm 12.7mm 8.89mm - - -
RS Stock No. 106-8567
Mfr. Part No.78253/55VC
€2.707
Each (In a Tube of 50)
units
240µH 0.6Ω - - 1:1.31 Through Hole 8µH - - 9mm 9.52mm - - -
RS Stock No. 106-8571
Mfr. Part No.78253/55C
€2.083
Each (In a Tube of 50)
units
0.83mH 1.5Ω - - 1:1.31 Through Hole 1µH - - 9mm 9.52mm - - -
RS Stock No. 533-0198
Mfr. Part No.Z1656
BrandOEP
€2.39
Each
units
12H 63Ω 63Ω 0.8dB - Through Hole 35 mH, 35000 μH 18 x 12.7 x 18mm 18mm 18mm 12.7mm - - -
RS Stock No. 109-4149
Mfr. Part No.ATB322524-0110
BrandTDK
€0.647
Each (On a Reel of 1000)
units
7µH 0.5Ω 60Ω - 0.0008125 Surface Mount 0.4µH - - 3.2mm 2.5mm - - -
RS Stock No. 756-7531
Mfr. Part No.750311592
€6.47
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. 163-4305
Mfr. Part No.750311591
€9.479
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. 210-6324
Mfr. Part No.PT6E
BrandOEP
€6.45
Each
units
3mH - 2.6Ω - 1:1+1 Through Hole - 15 x 15 x 16mm 16mm 15mm 15mm 1MHz 3kHz -
RS Stock No. 831-9321
Mfr. Part No.ATB3225-75034CT
BrandTDK
€1.60
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. 756-7399
Mfr. Part No.750311692
€5.30
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. 106-8566
Mfr. Part No.78253/55MVC
€2.769
Each (In a Tube of 50)
units
240µH 0.6Ω - - 1:1.31 Surface Mount 8µH - - 9mm 12.7mm - - -
RS Stock No. 756-7544
Mfr. Part No.750311594
€11.85
Each
units
15µH 0.035Ω 0.015Ω - 2.33:1 Surface Mount 550nH 32.31 x 27.03 x 13.69mm 13.69mm 32.31mm 27.03mm - - -
RS Stock No. 756-7496
Mfr. Part No.750311597
€8.70
Each
units
6µH 0.02Ω 0.004Ω - 3:1 Surface Mount 300nH 29.08 x 23.11 x 11.43mm 11.43mm 29.08mm 23.11mm - - -
RS Stock No. 629-9199
Mfr. Part No.76601/3C
€1.70
Each
units
- - - - 1:1 Through Hole - 12.7 x 8.89 x 6.35mm 6.35mm 12.7mm 8.89mm - - -
RS Stock No. 715-6901
Mfr. Part No.782482/33VC
€1.77
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. 756-7412
Mfr. Part No.750311305
€8.67
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. 173-6390
Mfr. Part No.IT253
BrandSchaffner
€5.18
Each
units
1.1mH - - - 1:1:1 Through Hole - 16.7 x 17.6 x 11.3mm 11.3mm 16.7mm 17.6mm - - -
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