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
MYR7.19
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. 167-4913
Mfr. Part No.DXP18BN5014TL
BrandMurata
MYR6,150.00
1 Reel of 5000
Reel(s)
- 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. 106-8571
Mfr. Part No.78253/55C
MYR10.31
Each (In a Tube of 50)
units
0.83mH 1.5Ω - - 1:1.31 Through Hole 1µH - - 9mm 9.52mm - - -
RS Stock No. 756-7541
Mfr. Part No.750311596
MYR55.13
Each
units
12µH 0.03Ω 0.03Ω - 1.5:1 Surface Mount 400nH 32.31 x 27.03 x 13.69mm 13.69mm 32.31mm 27.03mm - - -
RS Stock No. 106-2888
Mfr. Part No.DXW21BN7511TL
MYR2.417
Each (In a Pack of 10)
units
- - - 1dB - Surface Mount - - - 2mm 1.2mm 870MHz 50MHz Enclosed
RS Stock No. 170-9232
Mfr. Part No.76601/2C
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 - - -
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. 106-8557
Mfr. Part No.1001C
MYR15.698
Each (In a Tube of 30)
units
3mH 1.2Ω - 1:1 PCB Mount 22µH - - 15.06mm 15.06mm - - -
RS Stock No. 167-4838
Mfr. Part No.DXW21BN7511SL
BrandMurata
MYR2,840.00
1 Reel of 2000
Reel(s)
- 75Ω 75Ω 1.4dB 1:1 Surface Mount - 2 x 1.2 x 1.2mm 1.2mm 2mm 1.2mm - - -
RS Stock No. 883-9092
Mfr. Part No.IT155
BrandSchaffner
MYR19.43
Each (In a Pack of 100)
units
5mH 1.2Ω 1.2Ω - 1:1 Through Hole 85µH - - 27mm 22.5mm 40 kHz, 500 (Data Transmission) kHz - Enclosed
RS Stock No. 106-8565
Mfr. Part No.78253/55MC
MYR10.31
Each (In a Tube of 50)
units
0.83mH 1.5Ω - - 1:1.31 Surface Mount 1µH - - 9mm 12.7mm - - -
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. 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. 163-4316
Mfr. Part No.750311624
MYR27.24
Each (On a Reel of 200)
units
9µH 0.034Ω 0.021Ω - 1.5:1 Surface Mount 250nH 17.75 x 13.46 x 12.7mm 12.7mm 17.75mm 13.46mm - - -
RS Stock No. 756-7516
Mfr. Part No.750311605
MYR55.81
Each
units
15µH 0.04Ω 0.005Ω - 1:3.5 Surface Mount 550nH 29.08 x 23.11 x 11.43mm 11.43mm 29.08mm 23.11mm - - -
RS Stock No. 171-0809
Mfr. Part No.ATB3225-75032CT
BrandTDK
MYR6.154
Each (On a Reel of 1000)
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. 715-6882
Mfr. Part No.78253/35MVC
MYR14.03
Each
units
142µH 0.5Ω - - 1:2.14 Surface Mount 5µH 9 x 12.7 x 6.55mm 6.55mm 9mm 12.7mm - - -
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. 171-0808
Mfr. Part No.ATB3225-75011CT
BrandTDK
MYR6.154
Each (On a Reel of 1000)
units
- 0.7Ω - 0.8dB 1:1 Surface Mount - 3.2 x 2.5 x 2.3mm 2.3mm 3.2mm 2.5mm 200MHz 5MHz -
RS Stock No. 163-4306
Mfr. Part No.750311592
MYR44.87
Each (On a Reel of 100)
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 - - -
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