Pulse 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 compone...

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EPCOS Surface Telecom Transformer 1 : 0.22 :0.78 Turns Ratio, 4.1 μH Prim. Inductance, 75mΩ Prim. Resistance
EPCOS Surface Telecom Transformer 1 : 0.22 :0.78 Turns Ratio, 4.1 μH Prim. Inductance, 75mΩ Prim. Resistance
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RS Stock No.: 475-544Brand: EPCOSManufacturers Part No.: B78308X0001

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Epcos
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Telecom Transformer
4.1μH
-
75mΩ
-
-
-
-
-
1 : 0.22 :0.78
Surface
-
-
-
-
-
-
-40°C
-
-
150°C
12.90 mm
IEC 60664-1, 61558-2-16
15.8mm
11.4mm
500kHz
E13 EMHV
-
100kHz
-
-
-
3000V ac
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EPCOS Surface Telecom Transformer 1 : 1 :8.42 Turns Ratio, 3 mH Prim. Inductance, 23Ω Prim. Resistance
EPCOS Surface Telecom Transformer 1 : 1 :8.42 Turns Ratio, 3 mH Prim. Inductance, 23Ω Prim. Resistance
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RS Stock No.: 475-545Brand: EPCOSManufacturers Part No.: B78416X0001

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Epcos
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Telecom Transformer
3mH
-
23Ω
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-
-
-
-
1 : 1 :8.42
Surface
-
-
-
-
-
-
-40°C
-
-
125°C
8.8 mm
RoHS, AEC-Q200
7.6mm
7.10mm
300kHz
EP6
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50kHz
-
-
-
200Vrms
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EPCOS Surface Telecom Transformer 1:1.08 Turns Ratio, 100 μH Prim. Inductance
EPCOS Surface Telecom Transformer 1:1.08 Turns Ratio, 100 μH Prim. Inductance
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RS Stock No.: 475-543Brand: EPCOSManufacturers Part No.: B78307X0001

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Epcos
-
Telecom Transformer
100μH
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-
-
-
-
-
-
1:1.08
Surface
-
-
-
-
-
-
-40°C
-
-
150°C
11.70 mm
RoHS
13.15mm
11.35mm
500kHz
E10 EM
-
100kHz
-
-
-
3000V ac
-
Murata Power Solutions Surface Pulse Transformer 1:1 Turns Ratio, 10 mH Prim. Inductance
Murata Power Solutions Surface Pulse Transformer 1:1 Turns Ratio, 10 mH Prim. Inductance
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RS Stock No.: 279-8047Brand: Murata Power SolutionsManufacturers Part No.: 78601/9JC

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Murata Power Solutions
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Pulse Transformer
10mH
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-
-
-
-
-
-
1:1
Surface
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No
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Murata Power Solutions Surface Pulse Transformer 1:1 Turns Ratio, 10 mH Prim. Inductance
Murata Power Solutions Surface Pulse Transformer 1:1 Turns Ratio, 10 mH Prim. Inductance
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RS Stock No.: 279-8048Brand: Murata Power SolutionsManufacturers Part No.: 78601/9JC

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Murata Power Solutions
-
Pulse Transformer
10mH
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-
-
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-
-
1:1
Surface
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No
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Murata Power Solutions Surface Pulse Transformer 1:1 Turns Ratio, 10 mH Prim. Inductance
Murata Power Solutions Surface Pulse Transformer 1:1 Turns Ratio, 10 mH Prim. Inductance
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RS Stock No.: 279-8049Brand: Murata Power SolutionsManufacturers Part No.: 78615/9JC

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Murata Power Solutions
-
Pulse Transformer
10mH
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-
-
-
-
-
-
1:1
Surface
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No
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Murata Power Solutions Surface Pulse Transformer 1:1 Turns Ratio, 10 mH Prim. Inductance
Murata Power Solutions Surface Pulse Transformer 1:1 Turns Ratio, 10 mH Prim. Inductance
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RS Stock No.: 279-8050Brand: Murata Power SolutionsManufacturers Part No.: 78615/9JC

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Murata Power Solutions
-
Pulse Transformer
10mH
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-
-
-
-
-
-
1:1
Surface
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No
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Murata Power Solutions Through Hole Pulse Transformer 2:1:1 Turns Ratio, 12 mH Prim. Inductance
Murata Power Solutions Through Hole Pulse Transformer 2:1:1 Turns Ratio, 12 mH Prim. Inductance
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RS Stock No.: 279-8016Brand: Murata Power SolutionsManufacturers Part No.: 1003C

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30

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Murata Power Solutions
-
Pulse Transformer
12mH
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-
-
-
-
-
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2:1:1
Through Hole
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No
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Murata Power Solutions Through Hole Pulse Transformer 2:1:1 Turns Ratio, 12 mH Prim. Inductance
Murata Power Solutions Through Hole Pulse Transformer 2:1:1 Turns Ratio, 12 mH Prim. Inductance
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RS Stock No.: 279-8017Brand: Murata Power SolutionsManufacturers Part No.: 1003C

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Murata Power Solutions
-
Pulse Transformer
12mH
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2:1:1
Through Hole
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No
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Wurth Elektronik Surface Telecom Transformer 1:1 Turns Ratio, 450 μH Prim. Inductance, 450mΩ Prim. Resistance
Wurth Elektronik Surface Telecom Transformer 1:1 Turns Ratio, 450 μH Prim. Inductance, 450mΩ Prim. Resistance
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RS Stock No.: 245-8573Brand: Wurth ElektronikManufacturers Part No.: 74941300

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650

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Wurth Elektronik
-
Telecom Transformer
450μH
-
450mΩ
-
-
-
-0.25dB
-
1:1
Surface
-
-
-
-
-
-
-40°C
-
-
125°C
7.6 mm
RoHS
9.5mm
5.5mm
-
WE‑BMS
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-
-
-
-
1kV
-
Wurth Elektronik Surface Telecom Transformer 1:1 Turns Ratio, 450 μH Prim. Inductance, 450mΩ Prim. Resistance
Wurth Elektronik Surface Telecom Transformer 1:1 Turns Ratio, 450 μH Prim. Inductance, 450mΩ Prim. Resistance
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Also available in industry standard packaging
RS Stock No.: 245-8577Brand: Wurth ElektronikManufacturers Part No.: 74941302

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Wurth Elektronik
-
Telecom Transformer
450μH
-
450mΩ
-
-
-
-0.25dB
-
1:1
Surface
-
-
-
-
-
-
-40°C
-
-
125°C
9.45 mm
RoHS
15.4mm
3.45mm
-
WE‑BMS
-
-
-
-
-
1kV
-
Wurth Elektronik Surface Telecom Transformer 1:1 Turns Ratio, 450 μH Prim. Inductance, 450mΩ Prim. Resistance
Wurth Elektronik Surface Telecom Transformer 1:1 Turns Ratio, 450 μH Prim. Inductance, 450mΩ Prim. Resistance
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Also available in industry standard packaging
RS Stock No.: 245-8582Brand: Wurth ElektronikManufacturers Part No.: 74942301

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Wurth Elektronik
-
Telecom Transformer
450μH
-
450mΩ
-
-
-
-0.25dB
-
1:1
Surface
-
-
-
-
-
-
-40°C
-
-
125°C
15.1 mm
RoHS
14.9mm
3.45mm
-
WE‑BMS
-
-
-
-
-
1kV
-
Wurth Elektronik Surface Telecom Transformer 1:1 Turns Ratio, 450 μH Prim. Inductance, 450mΩ Prim. Resistance
Wurth Elektronik Surface Telecom Transformer 1:1 Turns Ratio, 450 μH Prim. Inductance, 450mΩ Prim. Resistance
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Also available in industry standard packaging
RS Stock No.: 245-8579Brand: Wurth ElektronikManufacturers Part No.: 74942300

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Wurth Elektronik
-
Telecom Transformer
450μH
-
450mΩ
-
-
-
-0.25dB
-
1:1
Surface
-
-
-
-
-
-
-40°C
-
-
125°C
15.1 mm
RoHS
14.7mm
4.75mm
-
WE‑BMS
-
-
-
-
-
1kV
-
Wurth Elektronik Surface Telecom Transformer 1:1 Turns Ratio, 450 μH Prim. Inductance, 450mΩ Prim. Resistance
Wurth Elektronik Surface Telecom Transformer 1:1 Turns Ratio, 450 μH Prim. Inductance, 450mΩ Prim. Resistance
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RS Stock No.: 245-8578Brand: Wurth ElektronikManufacturers Part No.: 74942300

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450

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Wurth Elektronik
-
Telecom Transformer
450μH
-
450mΩ
-
-
-
-0.25dB
-
1:1
Surface
-
-
-
-
-
-
-40°C
-
-
125°C
15.1 mm
RoHS
14.7mm
4.75mm
-
WE‑BMS
-
-
-
-
-
1kV
-
Wurth Elektronik Surface Telecom Transformer 1:1 Turns Ratio, 450 μH Prim. Inductance, 450mΩ Prim. Resistance
Wurth Elektronik Surface Telecom Transformer 1:1 Turns Ratio, 450 μH Prim. Inductance, 450mΩ Prim. Resistance
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Also available in industry standard packaging
RS Stock No.: 245-8575Brand: Wurth ElektronikManufacturers Part No.: 74941300

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Wurth Elektronik
-
Telecom Transformer
450μH
-
450mΩ
-
-
-
-0.25dB
-
1:1
Surface
-
-
-
-
-
-
-40°C
-
-
125°C
7.6 mm
RoHS
9.5mm
5.5mm
-
WE‑BMS
-
-
-
-
-
1kV
-
Wurth Elektronik Surface Telecom Transformer 1:1 Turns Ratio, 450 μH Prim. Inductance, 450mΩ Prim. Resistance
Wurth Elektronik Surface Telecom Transformer 1:1 Turns Ratio, 450 μH Prim. Inductance, 450mΩ Prim. Resistance
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RS Stock No.: 245-8581Brand: Wurth ElektronikManufacturers Part No.: 74942301

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550

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Wurth Elektronik
-
Telecom Transformer
450μH
-
450mΩ
-
-
-
-0.25dB
-
1:1
Surface
-
-
-
-
-
-
-40°C
-
-
125°C
15.1 mm
RoHS
14.9mm
3.45mm
-
WE‑BMS
-
-
-
-
-
1kV
-
Wurth Elektronik Surface Telecom Transformer 1:1 Turns Ratio, 450 μH Prim. Inductance, 450mΩ Prim. Resistance
Wurth Elektronik Surface Telecom Transformer 1:1 Turns Ratio, 450 μH Prim. Inductance, 450mΩ Prim. Resistance
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RS Stock No.: 245-8576Brand: Wurth ElektronikManufacturers Part No.: 74941302

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850

Available in multiples of 850
850P.O.A.
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Wurth Elektronik
-
Telecom Transformer
450μH
-
450mΩ
-
-
-
-0.25dB
-
1:1
Surface
-
-
-
-
-
-
-40°C
-
-
125°C
9.45 mm
RoHS
15.4mm
3.45mm
-
WE‑BMS
-
-
-
-
-
1kV
-
Wurth Elektronik Telecom Transformer 1:1 Turns Ratio, 350 μH Prim. Inductance, 450mΩ Prim. Resistance
Wurth Elektronik Telecom Transformer 1:1 Turns Ratio, 350 μH Prim. Inductance, 450mΩ Prim. Resistance
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RS Stock No.: 245-8586Brand: Wurth ElektronikManufacturers Part No.: 749600010

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Wurth Elektronik
-
Telecom Transformer
350μH
-
450mΩ
-
-
-
-1.3dB
-
1:1
-
-
-
-
-
-
-
-40°C
-
-
125°C
-
RoHS Approval (2011/65/EU&2015/863), REACh Approval Conform or declared ((EC)1907/2006)
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-
-
WE‑BMS
-
-
-
-
-
1kV
-
Wurth Elektronik Telecom Transformer 1:1 Turns Ratio, 350 μH Prim. Inductance, 450mΩ Prim. Resistance
Wurth Elektronik Telecom Transformer 1:1 Turns Ratio, 350 μH Prim. Inductance, 450mΩ Prim. Resistance
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RS Stock No.: 245-8585Brand: Wurth ElektronikManufacturers Part No.: 749600010

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40

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Wurth Elektronik
-
Telecom Transformer
350μH
-
450mΩ
-
-
-
-1.3dB
-
1:1
-
-
-
-
-
-
-
-40°C
-
-
125°C
-
RoHS Approval (2011/65/EU&2015/863), REACh Approval Conform or declared ((EC)1907/2006)
-
-
-
WE‑BMS
-
-
-
-
-
1kV
-
OEP Through Hole Pulse Transformer 1:1 Turns Ratio, 1.9 h Prim. Inductance, 32Ω Prim. Resistance
OEP Through Hole Pulse Transformer 1:1 Turns Ratio, 1.9 h Prim. Inductance, 32Ω Prim. Resistance
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RS Stock No.: 533-0176Brand: OEPManufacturers Part No.: Z1640E

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OEP
-
Pulse Transformer
1.9h
-
32Ω
-
-
42Ω
1.1dB
-
1:1
Through Hole
-
1.6mH
-
-
-
-
-
-
-
-
14.5 mm
RoHS
18mm
18mm
4kHz
-
-
200Hz
-
-
-
-
-

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