Audio Transformers / Signal Transformers

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Telecom Transformers

HALO Electronics Telecom Transformers are for use with 56 and 64Kbps, T1/E1, E3/ DS3 and E4 applications and UL/EN60950 recognized. Their patented SMD construction provides high reliability SMD isolation modules for all leading Line Interface Units (LIUs). Isolation modules are available in Functional, Supplemental and Reinforced insulation to meet the most stringent safety requirements.

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Part #

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 6P SingleCh

TG04-1205NSRL
HALO Electronics
1: S/18.49
90In Stock

Mfr. Part #
TG04-1205NSRL

Mouser Part #
493-TG04-1205NSRL

HALO Electronics

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 6P SingleCh

Learn More

Datasheet

90In Stock

S/18.49

S/11.91

S/9.73

S/7.86

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

SMD/SMT

1.2 mH

1.5 kV

0 C

+ 70 C

Single

SMD-6

8.13 mm

7.11 mm

5.08 mm

SMD-T1

Tube

Audio Transformers / Signal Transformers T1/E1 Duet ISO MOD SMD 24P Dual Port

TG74-1505NZRL
HALO Electronics
1: S/45.54
320In Stock

Mfr. Part #
TG74-1505NZRL

Mouser Part #
493-TG74-1505NZRL

HALO Electronics

Audio Transformers / Signal Transformers T1/E1 Duet ISO MOD SMD 24P Dual Port

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Datasheet

320In Stock

S/45.54

S/29.35

S/23.94

S/19.38

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

SMD/SMT

500 nH

1.5 kV

Dual

SMD-24

17.78 mm

12.19 mm

5.84 mm

SMD-T1

Tube

Audio Transformers / Signal Transformers T1/E1 ISO MOD THT 6Pin 1:1:1 Single Ch

TD10-1205ALF
HALO Electronics
1: S/17.52
411In Stock

Mfr. Part #
TD10-1205ALF

Mouser Part #
493-TD10-1205ALF

HALO Electronics

Audio Transformers / Signal Transformers T1/E1 ISO MOD THT 6Pin 1:1:1 Single Ch

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Datasheet

411In Stock

S/17.52

S/11.33

S/9.26

S/7.47

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

Through Hole

1.2 mH

1.5 kV

0 C

+ 70 C

Single

DIP-6

12.7 mm

8.89 mm

6.35 mm

TD-T1

Tube

Audio Transformers / Signal Transformers T1/E1 ISO MOD THT 6Pin 1:1.36CT 1Ch

TD70-1205ALF
HALO Electronics
1: S/17.52
38In Stock

Mfr. Part #
TD70-1205ALF

Mouser Part #
493-TD70-1205ALF

HALO Electronics

Audio Transformers / Signal Transformers T1/E1 ISO MOD THT 6Pin 1:1.36CT 1Ch

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Datasheet

38In Stock

S/17.52

S/11.33

S/9.26

S/7.47

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

Through Hole

1.2 mH

1.5 kV

0 C

+ 70 C

Single

DIP-6

12.7 mm

8.89 mm

6.35 mm

TD-T1

Tube

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 6P SingleCh

TG70-1205NSRL
HALO Electronics
1: S/18.49
506In Stock

Mfr. Part #
TG70-1205NSRL

Mouser Part #
493-TG70-1205NSRL

HALO Electronics

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 6P SingleCh

Learn More

Datasheet

506In Stock

S/18.49

S/11.91

S/9.73

S/7.86

View

Min.: 1
Mult.: 1

LAN Isolation Transformers

Module

SMD/SMT

1.2 mH

1.5 kV

0 C

+ 70 C

Single

SMD-6

8.13 mm

7.11 mm

5.08 mm

SMD-T1

Tube

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 6P SingleCh

TG02-1205NSRL
HALO Electronics
1: S/18.49
522In Stock

Mfr. Part #
TG02-1205NSRL

Mouser Part #
493-TG02-1205NSRL

HALO Electronics

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 6P SingleCh

Learn More

Datasheet

522In Stock

S/18.49

S/11.91

S/9.73

S/7.86

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

SMD/SMT

1.2 mH

1.5 kV

0 C

+ 70 C

Single

SMD-6

8.13 mm

7.11 mm

5.08 mm

SMD-T1

Tube

Audio Transformers / Signal Transformers E4/STM-01/STS-3/OC-3 16P SMD Single Ch

TG04-TDK2NSRL
HALO Electronics
1: S/27.64
427In Stock
558Expected 9/8/2026

Mfr. Part #
TG04-TDK2NSRL

Mouser Part #
493-TG04-TDK2NSRL

HALO Electronics

Audio Transformers / Signal Transformers E4/STM-01/STS-3/OC-3 16P SMD Single Ch

Learn More

Datasheet

427In Stock

558Expected 9/8/2026

S/27.64

S/17.83

S/14.56

S/11.79

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

SMD/SMT

8 MHz to 240 MHz

36 uH

1.5 kV

- 40 C

+ 85 C

Dual

SMD-6

8.13 mm

7.11 mm

5.08 mm

SMD-E4

Tube

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 6P SingleCh

TG15-1205NSRL
HALO Electronics
1: S/18.49
158In Stock

Mfr. Part #
TG15-1205NSRL

Mouser Part #
493-TG15-1205NSRL

HALO Electronics

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 6P SingleCh

Learn More

Datasheet

158In Stock

S/18.49

S/11.91

S/9.73

S/7.86

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

SMD/SMT

1.2 mH

1.5 kV

0 C

+ 70 C

Single

SMD-6

8.13 mm

7.11 mm

5.08 mm

SMD-T1

Tube

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 20P Quad Ch

TG83-1205NM5RL
HALO Electronics
1: S/34.25
90In Stock

Mfr. Part #
TG83-1205NM5RL

Mouser Part #
493-TG83-1205NM5RL

HALO Electronics

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 20P Quad Ch

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Datasheet

90In Stock

S/34.25

S/22.11

S/18.06

S/14.60

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

SMD/SMT

1.2 mH

1.5 kV

0 C

+ 70 C

Dual, Quad

SMD-20

15.62 mm

7.11 mm

6.35 mm

SMD-T1

Tube

Audio Transformers / Signal Transformers T1/E1 Quatra SMD 40P QuadPort ISO MOD

TGSP-S024NXRL
HALO Electronics
1: S/60.72
151In Stock

Mfr. Part #
TGSP-S024NXRL

Mouser Part #
493-TGSP-S024NXRL

HALO Electronics

Audio Transformers / Signal Transformers T1/E1 Quatra SMD 40P QuadPort ISO MOD

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Datasheet

151In Stock

S/60.72

S/39.20

S/32.00

S/25.85

View

Min.: 1
Mult.: 1

LAN Isolation Transformers

Module

SMD/SMT

100 kHz to 10 MHz

1.5 mH

800 mOhms

1.5 kV

- 40 C

+ 85 C

Quad

SMD-40

27.94 mm

12.19 mm

5.08 mm

SMD-T1

Tube

Audio Transformers / Signal Transformers T1/E1 ISO MOD THT 6Pin 1CT:1CT 1Ch

TD15-1205ALF
HALO Electronics
1: S/17.52
112In Stock

Mfr. Part #
TD15-1205ALF

Mouser Part #
493-TD15-1205ALF

HALO Electronics

Audio Transformers / Signal Transformers T1/E1 ISO MOD THT 6Pin 1CT:1CT 1Ch

Learn More

Datasheet

112In Stock

S/17.52

S/11.33

S/9.26

S/7.47

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

Through Hole

1.2 mH

1.5 kV

0 C

+ 70 C

Single

DIP-6

12.7 mm

8.89 mm

6.35 mm

TD-T1

Tube

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 20P Quad Ch

TG05-1205NM5RL
HALO Electronics
1: S/32.31
276In Stock

Mfr. Part #
TG05-1205NM5RL

Mouser Part #
493-TG05-1205NM5RL

HALO Electronics

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 20P Quad Ch

Learn More

Datasheet

276In Stock

S/32.31

S/15.30

S/13.31

S/13.20

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

SMD/SMT

1.2 mH

1.5 kV

0 C

+ 70 C

Dual, Quad

SMD-20

15.62 mm

7.11 mm

6.35 mm

SMD-T1

Tube

Audio Transformers / Signal Transformers T3/DS3/E3/STS-1 SMD 1-Port 1:2 Gullwing

TG07-0356NSRL
HALO Electronics
1: S/24.13
540In Stock

Mfr. Part #
TG07-0356NSRL

Mouser Part #
493-TG07-0356NSRL

HALO Electronics

Audio Transformers / Signal Transformers T3/DS3/E3/STS-1 SMD 1-Port 1:2 Gullwing

Learn More

Datasheet

540In Stock

S/24.13

S/15.61

S/12.73

S/10.32

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

SMD/SMT

35 uH

1.5 kV

- 40 C

+ 85 C

Single

SMD-6

8.13 mm

7.11 mm

5.08 mm

SMD-T3

Tube

Audio Transformers / Signal Transformers T1/E1 MiniOctal SMD 32P 8Channel ISO MOD

TG05-1505NURL
HALO Electronics
1: S/83.10
386In Stock

Mfr. Part #
TG05-1505NURL

Mouser Part #
493-TG05-1505NURL

HALO Electronics

Audio Transformers / Signal Transformers T1/E1 MiniOctal SMD 32P 8Channel ISO MOD

Learn More

Datasheet

386In Stock

S/83.10

S/24.21

Quote

Min.: 1
Mult.: 1

Isolation Transformers

Module

SMD/SMT

1.5 mH

1.5 kV

- 40 C

+ 85 C

Quad

SMD-32

25.4 mm

7.62 mm

7.37 mm

SMD-T1

Tube

Audio Transformers / Signal Transformers Co-Direct 64Kbps SMD 12P Dual Gullwing

TG05-2004NCRL
HALO Electronics
1: S/60.53
208In Stock

Mfr. Part #
TG05-2004NCRL

Mouser Part #
493-TG05-2004NCRL

HALO Electronics

Audio Transformers / Signal Transformers Co-Direct 64Kbps SMD 12P Dual Gullwing

Learn More

Datasheet

208In Stock

S/60.53

S/39.00

S/31.84

S/25.73

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

SMD/SMT

20 mH

1.5 kV

0 C

+ 70 C

Single

SMD-12

17.15 mm

11.56 mm

8.64 mm

DUALSMD-64

Tube

Audio Transformers / Signal Transformers T1/E1 Quatra SMD 40P QuadPort ISO MOD

TG49-LVL1NXRL
HALO Electronics
1: S/61.31
273In Stock

Mfr. Part #
TG49-LVL1NXRL

Mouser Part #
493-TG49-LVL1NXRL

HALO Electronics

Audio Transformers / Signal Transformers T1/E1 Quatra SMD 40P QuadPort ISO MOD

Learn More

Datasheet

273In Stock

S/61.31

S/17.56

S/17.13

Min.: 1
Mult.: 1

Isolation Transformers

Module

SMD/SMT

100 kHz to 10 MHz

1.5 mH

800 mOhms

1.5 kV

- 40 C

+ 85 C

Quad

SMD-40

27.94 mm

12.19 mm

5.84 mm

SMD-T1

Tube

Audio Transformers / Signal Transformers T3/DS3/E3/STS-1 SMD 1-Port 1:1 Gullwing

TG04-0406NSRL
HALO Electronics
1: S/21.60
4In Stock

Mfr. Part #
TG04-0406NSRL

Mouser Part #
493-TG04-0406NSRL

HALO Electronics

Audio Transformers / Signal Transformers T3/DS3/E3/STS-1 SMD 1-Port 1:1 Gullwing

Learn More

Datasheet

4In Stock

S/21.60

S/13.94

S/11.37

S/9.19

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

SMD/SMT

40 uH

1.5 kV

0 C

+ 70 C

Single

SMD-6

8.13 mm

7.11 mm

5.08 mm

SMD-T3

Tube

Audio Transformers / Signal Transformers E4/STM-01/STS-3/OC-3 16P SMD Dual Ch

TG04-TDK1N1RL
HALO Electronics
1: S/36.01
65In Stock

Mfr. Part #
TG04-TDK1N1RL

Mouser Part #
493-TG04-TDK1N1RL

HALO Electronics

Audio Transformers / Signal Transformers E4/STM-01/STS-3/OC-3 16P SMD Dual Ch

Learn More

Datasheet

65In Stock

S/36.01

S/23.24

S/15.34

S/12.88

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

SMD/SMT

8 MHz to 240 MHz

36 uH

1.5 kV

- 40 C

+ 85 C

Dual

SMD-16

12.7 mm

7.11 mm

5.08 mm

SMD-E4

Tube

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 16P Dual Ch

TG08-1205N1LF
HALO Electronics
1: S/19.66
60In Stock

Mfr. Part #
TG08-1205N1LF

Mouser Part #
493-TG08-1205N1LF

HALO Electronics

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 16P Dual Ch

Learn More

Datasheet

60In Stock

S/19.66

S/12.77

S/10.39

S/8.41

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

SMD/SMT

1.2 mH

1.5 kV

0 C

+ 70 C

Dual

SMD-16

12.7 mm

7.11 mm

5.08 mm

SMD-T1

Tube

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 6P SingleCh

TG23-1505NSRL
HALO Electronics
1: S/20.63
114In Stock

Mfr. Part #
TG23-1505NSRL

Mouser Part #
493-TG23-1505NSRL

HALO Electronics

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 6P SingleCh

Learn More

Datasheet

114In Stock

S/20.63

S/13.39

S/10.94

S/8.84

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

SMD/SMT

1.5 mH

1.5 kV

- 40 C

+ 85 C

Single

SMD-6

8.13 mm

7.11 mm

5.08 mm

SMD-T1

Tube

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 16P Dual Ch

TG74-1505N5LF
HALO Electronics
1: S/21.41
36In Stock

Mfr. Part #
TG74-1505N5LF

Mouser Part #
493-TG74-1505N5LF

HALO Electronics

Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 16P Dual Ch

Learn More

Datasheet

36In Stock

S/21.41

S/13.82

S/11.29

S/9.11

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

SMD/SMT

1.5 mH

1.5 kV

- 40 C

+ 85 C

Dual

SMD-16

12.7 mm

7.11 mm

6.35 mm

SMD-T1

Tube

Audio Transformers / Signal Transformers DIP ISOLATION MODULE T3/E3 Single StdTemp

TD01-0406NERL
HALO Electronics
558: S/6.11
Non-Stocked

Mfr. Part #
TD01-0406NERL

Mouser Part #
493-TD01-0406NERL

HALO Electronics

Audio Transformers / Signal Transformers DIP ISOLATION MODULE T3/E3 Single StdTemp

Learn More

Datasheet

Non-Stocked

S/6.11

S/5.84

S/5.64

Min.: 558
Mult.: 62

Isolation Transformers

Module

Through Hole

200 kHz to 340 MHz

40 uH

1.5 kV

0 C

+ 70 C

Single

DIP-6

8.13 mm

7.11 mm

5.33 mm

TD-T3

Tube

Audio Transformers / Signal Transformers DIP ISOLATION MODULE T3/E3 Single ExtTemp

TD01-0456NERL
HALO Electronics
558: S/10.59
Non-Stocked

Mfr. Part #
TD01-0456NERL

Mouser Part #
493-TD01-0456NERL

HALO Electronics

Audio Transformers / Signal Transformers DIP ISOLATION MODULE T3/E3 Single ExtTemp

Learn More

Datasheet

Non-Stocked

S/10.59

S/10.12

S/9.85

Min.: 558
Mult.: 62

Isolation Transformers

Module

Single

TD-T3

Tube

Audio Transformers / Signal Transformers T1/E1 ISO MOD THT 6P Single Ch StdTemp

TD02-1205ALF
HALO Electronics
1: S/17.52
Non-Stocked

Mfr. Part #
TD02-1205ALF

Mouser Part #
493-TD02-1205ALF

HALO Electronics

Audio Transformers / Signal Transformers T1/E1 ISO MOD THT 6P Single Ch StdTemp

Learn More

Datasheet

Non-Stocked

S/17.52

S/11.33

S/9.26

S/7.47

View

Min.: 1
Mult.: 1

Isolation Transformers

Module

Through Hole

1.2 mH

1.5 kV

0 C

+ 70 C

Single

DIP-6

12.7 mm

8.89 mm

6.35 mm

TD-T1

Tube

Audio Transformers / Signal Transformers T3/E3/DS3/STS-1 6P ISO MOD THT Single

TD04-0406NERL
HALO Electronics
558: S/6.34
Non-Stocked

Mfr. Part #
TD04-0406NERL

Mouser Part #
493-TD04-0406NERL

HALO Electronics

Audio Transformers / Signal Transformers T3/E3/DS3/STS-1 6P ISO MOD THT Single

Learn More

Datasheet

Non-Stocked

S/6.34

S/6.07

S/5.92

Min.: 558
Mult.: 62

Isolation Transformers

Module

Single

TD-T3

Tube

Telecom Transformers

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