Part | RoHS | Manufacturer | Transformer Type | Mounting Feature | Manufacturer Series | Approvals (V) | Terminal Finish | Impedance (Primary) | Impedance (Secondary) | No. of Winding (Primary) | Maximum Pulse Rise Time | Isolation Voltage | Insertion Loss | Inductance (Primary) | Packing Method | Minimum ET Product | Maximum DC Unbalance Current | No. of Winding (Secondary) | Sub-Category | Dimensions | Maximum Operating Temperature | Application | Minimum Operating Temperature | Height | Width | Nominal Input Voltage (V) | Load Resistance | Additional Features | JESD-609 Code | Minimum Operating Frequency | Length | Turns Ratio (Np:Ns) | Maximum Operating Frequency |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Bourns |
TELECOM TRANSFORMER |
SURFACE MOUNT |
UL |
TIN SILVER COPPER |
600 OHMS |
600 OHMS |
1 |
2 dB |
TAPE & REEL |
1 |
Other Transformers |
L12.5XB9.6XH7.36 (mm) |
85 Cel |
MATCHING |
-20 Cel |
7.36 mm |
9.6 mm |
115 ohm |
TURNS RATIO: 1:1, HEIGHT DIMENSIONS INCLUDE TERMINALS ALSO |
e1 |
.2 KHz |
12.5 mm |
1:1 |
4 KHz |
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|
Bourns |
TELECOM TRANSFORMER |
SURFACE MOUNT |
UL |
TIN SILVER COPPER |
600 OHMS |
600 OHMS |
1 |
2 dB |
3800000 uH |
TUBE |
1 |
Other Transformers |
L12.5XB9.6XH7.36 (mm) |
85 Cel |
SIGNAL |
-20 Cel |
7.36 mm |
9.6 mm |
115 ohm |
TURNS RATIO: 1:1, HEIGHT DIMENSIONS INCLUDE TERMINALS ALSO |
e1 |
.2 KHz |
12.5 mm |
1:1 |
4 KHz |
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|
Bourns |
TELECOM TRANSFORMER |
THROUGH HOLE MOUNTED |
UL |
MATTE TIN |
600 OHMS |
600 OHMS |
1 |
1.5 dB |
2800000 uH |
1 |
L17.7XB17.7XH12.6 (mm) |
60 Cel |
SIGNAL |
-10 Cel |
12.6 mm |
17.7 mm |
66 ohm |
TURNS RATIO: 1:1 |
e3 |
.2 KHz |
17.7 mm |
1:1 |
3.5 KHz |
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|
Pulse Electronics |
TELECOM TRANSFORMER |
SURFACE MOUNT |
600 OHMS |
600 OHMS |
TRAY |
L13.46XB17.65XH12.32 (mm) |
12.32 mm |
17.65 mm |
TURNS RATIO: 1:1 |
13.46 mm |
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|
Tamura |
TELECOM TRANSFORMER |
SURFACE MOUNT |
TTC-5023 |
UL |
600 OHMS |
600 OHMS |
1 |
2 dB |
3800000 uH |
1 |
Other Transformers |
L12.5XB9.6XH7.59 (mm) |
SIGNAL |
7.59 mm |
9.6 mm |
115 ohm |
HEIGHT INCLUDES TERMINAL |
.2 KHz |
12.5 mm |
1:1 |
4 KHz |
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|
Tamura |
TELECOM TRANSFORMER |
THROUGH HOLE MOUNTED |
600 OHMS |
85 Cel |
-20 Cel |
11.8 mm |
7.87 mm |
.3 KHz |
10.4 mm |
100 KHz |
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|
Tamura |
TELECOM TRANSFORMER |
THROUGH HOLE MOUNTED |
600 OHMS |
600 OHMS CT |
3 mA |
L10.4XB7.87XH11.8 (mm) |
11.8 mm |
7.87 mm |
.3 KHz |
10.4 mm |
100 KHz |
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|
Tamura |
TELECOM TRANSFORMER |
SURFACE MOUNT |
EN, UL |
600 OHMS |
85 Cel |
-20 Cel |
5.08 mm |
8.5 mm |
TURNS RATIO: 1:1 |
.2 KHz |
16.3 mm |
4 KHz |
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|
Tamura |
TELECOM TRANSFORMER |
THROUGH HOLE MOUNTED |
600 OHMS |
3 mA |
L10.4XB7.87XH11.8 (mm) |
11.8 mm |
7.87 mm |
10.4 mm |
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|
Etal Group Ab |
TELECOM TRANSFORMER |
THROUGH HOLE MOUNTED |
CSA; IEC; UL |
600 OHMS |
600 OHMS |
.1 mA |
70 Cel |
0 Cel |
12.6 mm |
18 mm |
.05 KHz |
18 mm |
10 KHz |
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Tamura |
TELECOM TRANSFORMER |
THROUGH HOLE MOUNTED |
CSA, UL |
600 OHMS |
19 mm |
16 mm |
TURNS RATIO: 1:1 |
.66 KHz |
20.7 mm |
3.5 KHz |
|||||||||||||||||||||||
|
Tamura |
TELECOM TRANSFORMER |
THROUGH HOLE MOUNTED |
CSA, UL |
600 OHMS |
13.8 mm |
22.5 mm |
TURNS RATIO: 1:1 |
.6 KHz |
23.1 mm |
3.5 KHz |
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|
Tamura |
TELECOM TRANSFORMER |
SURFACE MOUNT |
EN, UL |
600 OHMS |
346 OHMS |
85 Cel |
-20 Cel |
7.6 mm |
9.6 mm |
TURNS RATIO: 1:1 |
.2 KHz |
12.5 mm |
4 KHz |
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Stancor Products |
TELECOM TRANSFORMER |
THROUGH HOLE MOUNTED |
600 OHMS |
600 OHMS CT SPLIT |
90 mA |
105 Cel |
15.88 mm |
19.05 mm |
.3 KHz |
20.7 mm |
3.5 KHz |
||||||||||||||||||||||
|
Bourns |
TELECOM TRANSFORMER |
THROUGH HOLE MOUNTED |
UL |
600 OHMS |
600 OHMS |
L17.7XB17.7XH12.6 (mm) |
60 Cel |
-10 Cel |
12.6 mm |
17.7 mm |
TURNS RATIO: 1:1 |
.2 KHz |
17.7 mm |
3.5 KHz |
||||||||||||||||||
|
Tamura |
TELECOM TRANSFORMER |
SURFACE MOUNT |
EN, UL |
600 OHMS |
287 OHMS |
85 Cel |
-20 Cel |
7.6 mm |
9.6 mm |
TURNS RATIO: 1:1 |
.2 KHz |
12.5 mm |
4 KHz |
|||||||||||||||||||
Stancor Products |
TELECOM TRANSFORMER |
THROUGH HOLE MOUNTED |
600 OHMS |
600 OHMS |
0 mA |
105 Cel |
12.45 mm |
16.51 mm |
.3 KHz |
19.84 mm |
3.5 KHz |
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|
Sumida |
TELECOM TRANSFORMER |
THROUGH HOLE MOUNTED |
MT |
UL; BABT |
600 OHMS |
560 OHMS |
18.3mm X 18.3mm X 12.6mm |
12.6 mm |
18.3 mm |
18.3 mm |
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|
Bourns |
TELECOM TRANSFORMER |
THROUGH HOLE MOUNTED |
UL |
600 OHMS |
600 OHMS |
L17.7XB17.7XH12.6 (mm) |
60 Cel |
-10 Cel |
12.6 mm |
17.7 mm |
TURNS RATIO: 1:1 |
.2 KHz |
17.7 mm |
3.5 KHz |
||||||||||||||||||
|
Tamura |
TELECOM TRANSFORMER |
THROUGH HOLE MOUNTED |
CSA, UL |
600 OHMS |
12.4 mm |
16.5 mm |
.3 KHz |
20.3 mm |
3.5 KHz |
|||||||||||||||||||||||
Stancor Products |
TELECOM TRANSFORMER |
THROUGH HOLE MOUNTED |
600 OHMS |
600 OHMS CT |
90 mA |
105 Cel |
19.05 mm |
16.51 mm |
.3 KHz |
20.7 mm |
3.5 KHz |
||||||||||||||||||||||
|
Bourns |
TELECOM TRANSFORMER |
THROUGH HOLE MOUNTED |
UL |
600 OHMS |
600 OHMS |
L17.7XB17.7XH12.6 (mm) |
60 Cel |
-10 Cel |
12.6 mm |
17.7 mm |
TURNS RATIO: 1:1 |
.2 KHz |
17.7 mm |
3.5 KHz |
||||||||||||||||||
|
Bourns |
TELECOM TRANSFORMER |
SURFACE MOUNT |
UL |
TIN SILVER |
600 OHMS |
TAPE & REEL |
L12.5XB9.6XH7.36 (mm) |
85 Cel |
-20 Cel |
7.36 mm |
9.6 mm |
TURNS RATIO: 1:1, HEIGHT DIMENSIONS INCLUDE TERMINALS ALSO |
e2 |
.2 KHz |
12.5 mm |
4 KHz |
||||||||||||||||
|
Bourns |
TELECOM TRANSFORMER |
THROUGH HOLE MOUNTED |
UL |
600 OHMS |
600 OHMS |
1 |
1.5 dB |
2800000 uH |
2 |
Other Transformers |
L17.7XB17.7XH12.6 (mm) |
60 Cel |
SIGNAL |
-10 Cel |
12.6 mm |
17.7 mm |
66 ohm |
TURNS RATIO: 1:1 |
.2 KHz |
17.7 mm |
1:1 |
3.5 KHz |
Telecom transformers are a type of transformer used in telecommunications equipment to isolate and match impedance between different parts of a circuit. They are commonly used in applications such as modems, routers, switches, and telephone systems.
The primary function of a telecom transformer is to isolate the AC signal from the equipment to prevent noise and interference from other components in the circuit. Telecom transformers are also used to match impedance between the input and output stages of the circuit to ensure maximum power transfer and signal integrity.
Telecom transformers are typically designed to operate at low frequencies, ranging from a few Hz to several kHz, depending on the specific application. They are designed to handle low power levels and have low losses. The design of a telecom transformer is usually optimized for a specific frequency range and bandwidth.
Telecom transformers are typically constructed with a magnetic core made of ferrite or powdered iron, and one or more coils wound around the core. The coils are usually made of copper wire with a thin insulating layer. The number of turns and the size of the wire are determined by the required impedance transformation and the frequency range of the circuit.