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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HALO Electronics Audio Transformers / Signal Transformers T3/DS3/E3/STS-1 SMD 1-Port 1:2 Gullwing
Datasheet
544May Stock
Min.: 1
Mult.: 1

Isolation Transformers Module SMD/SMT 35 uH 1.5 kV - 40 C + 85 C Single T3/DS3/E3/STS-1 Interface SMD-6 8.13 mm 7.11 mm 5.08 mm SMD-T3 Tube
HALO Electronics Audio Transformers / Signal Transformers T3/DS3/E3/STS-1 SMD 1-Port 1:1 Gullwing
Datasheet
4May Stock
Min.: 1
Mult.: 1

Isolation Transformers Module SMD/SMT 40 uH 1.5 kV 0 C + 70 C Single T3/DS3/E3/STS-1 Interface SMD-6 8.13 mm 7.11 mm 5.08 mm SMD-T3 Tube
HALO Electronics Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 6P SingleCh
Datasheet
165May Stock
Min.: 1
Mult.: 1
Isolation Transformers Module SMD/SMT 1.2 mH 1.5 kV 0 C + 70 C Single T1/E1 Line Interface SMD-6 8.13 mm 7.11 mm 5.08 mm SMD-T1 Tube
HALO Electronics Audio Transformers / Signal Transformers E4/STM-01/STS-3/OC-3 16P SMD Single Ch
Datasheet
243May Stock
Min.: 1
Mult.: 1

Isolation Transformers Module SMD/SMT 8 MHz to 240 MHz 36 uH 1.5 kV - 40 C + 85 C Dual E4/STM-1/STS-3/OC/3 Interface SMD-6 8.13 mm 7.11 mm 5.08 mm SMD-E4 Tube
HALO Electronics Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 6P SingleCh
Datasheet
258May Stock
Min.: 1
Mult.: 1

Isolation Transformers Module SMD/SMT 1.2 mH 1.5 kV 0 C + 70 C Single T1/E1 Line interface SMD-6 8.13 mm 7.11 mm 5.08 mm SMD-T1 Tube
HALO Electronics Audio Transformers / Signal Transformers T1/E1 ISO MOD THT 6Pin 1:1:1 Single Ch
Datasheet
414May Stock
Min.: 1
Mult.: 1

Isolation Transformers Module Through Hole 1.2 mH 1.5 kV 0 C + 70 C Single T1/E1 Line Interface DIP-6 12.7 mm 8.89 mm 6.35 mm TD-T1 Tube
HALO Electronics Audio Transformers / Signal Transformers T1/E1 ISO MOD THT 6Pin 1:1.36CT 1Ch
Datasheet
40May Stock
Min.: 1
Mult.: 1

Isolation Transformers Module Through Hole 1.2 mH 1.5 kV 0 C + 70 C Single T1/E1 Line Interface DIP-6 12.7 mm 8.89 mm 6.35 mm TD-T1 Tube
HALO Electronics Audio Transformers / Signal Transformers T1/E1 ISO MOD THT 6Pin 1CT:1CT 1Ch
Datasheet
362May Stock
Min.: 1
Mult.: 1

Isolation Transformers Module Through Hole 1.2 mH 1.5 kV 0 C + 70 C Single T1/E1 Line Interface DIP-6 12.7 mm 8.89 mm 6.35 mm TD-T1 Tube
HALO Electronics Audio Transformers / Signal Transformers T1/E1 Quatra SMD 40P QuadPort ISO MOD
Datasheet
181May Stock
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 T1/E1 SMD-40 27.94 mm 12.19 mm 5.08 mm SMD-T1 Tube
HALO Electronics Audio Transformers / Signal Transformers T1/E1 MiniOctal SMD 32P 8Channel ISO MOD
Datasheet
386May Stock
Min.: 1
Mult.: 1

Isolation Transformers Module SMD/SMT 1.5 mH 1.5 kV - 40 C + 85 C Quad T1/E1 Line Interface SMD-32 25.4 mm 7.62 mm 7.37 mm SMD-T1 Tube
HALO Electronics Audio Transformers / Signal Transformers Co-Direct 64Kbps SMD 12P Dual Gullwing
Datasheet
211May Stock
Min.: 1
Mult.: 1

Isolation Transformers Module SMD/SMT 20 mH 1.5 kV 0 C + 70 C Single 64kbps/DDS/DS interface SMD-12 17.15 mm 11.56 mm 8.64 mm DUALSMD-64 Tube
HALO Electronics Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 6P SingleCh
Datasheet
532May Stock
Min.: 1
Mult.: 1

Isolation Transformers Module SMD/SMT 1.2 mH 1.5 kV 0 C + 70 C Single T1/E1 Line Interface SMD-6 8.13 mm 7.11 mm 5.08 mm SMD-T1 Tube
HALO Electronics Audio Transformers / Signal Transformers T1/E1 Quatra SMD 40P QuadPort ISO MOD
Datasheet
298May Stock
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 T1/E1 Interface SMD-40 27.94 mm 12.19 mm 5.84 mm SMD-T1 Tube
HALO Electronics Audio Transformers / Signal Transformers E4/STM-01/STS-3/OC-3 16P SMD Dual Ch
Datasheet
65May Stock
Min.: 1
Mult.: 1

Isolation Transformers Module SMD/SMT 8 MHz to 240 MHz 36 uH 1.5 kV - 40 C + 85 C Dual E4/STM-1/STS-3/OC/3 Interface SMD-16 12.7 mm 7.11 mm 5.08 mm SMD-E4 Tube
HALO Electronics Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 16P Dual Ch
Datasheet
60May Stock
Min.: 1
Mult.: 1

Isolation Transformers Module SMD/SMT 1.2 mH 1.5 kV 0 C + 70 C Dual T1/E1 Line Interface SMD-16 12.7 mm 7.11 mm 5.08 mm SMD-T1 Tube
HALO Electronics Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 6P SingleCh
Datasheet
114May Stock
Min.: 1
Mult.: 1

Isolation Transformers Module SMD/SMT 1.5 mH 1.5 kV - 40 C + 85 C Single T1/E1 Line interface SMD-6 8.13 mm 7.11 mm 5.08 mm SMD-T1 Tube
HALO Electronics Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 6P SingleCh
Datasheet
511May Stock
Min.: 1
Mult.: 1

LAN Isolation Transformers Module SMD/SMT 1.2 mH 1.5 kV 0 C + 70 C Single T1/E1 Line Interface SMD-6 8.13 mm 7.11 mm 5.08 mm SMD-T1 Tube
HALO Electronics Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 16P Dual Ch
Datasheet
36May Stock
Min.: 1
Mult.: 1

Isolation Transformers Module SMD/SMT 1.5 mH 1.5 kV - 40 C + 85 C Dual T1/E1 Line Interface SMD-16 12.7 mm 7.11 mm 6.35 mm SMD-T1 Tube
HALO Electronics Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 20P Quad Ch
Datasheet
156May Stock
Min.: 1
Mult.: 1

Isolation Transformers Module SMD/SMT 1.2 mH 1.5 kV 0 C + 70 C Dual, Quad T1/E1 Line Interface SMD-20 15.62 mm 7.11 mm 6.35 mm SMD-T1 Tube
HALO Electronics Audio Transformers / Signal Transformers T1/E1 ISO MOD SMD GullWing 20P Quad Ch
Datasheet
576Inaasahan 4/30/2026
Min.: 1
Mult.: 1

Isolation Transformers Module SMD/SMT 1.2 mH 1.5 kV 0 C + 70 C Dual, Quad T1/E1 Line Interface SMD-20 15.62 mm 7.11 mm 6.35 mm SMD-T1 Tube
HALO Electronics Audio Transformers / Signal Transformers T1/E1 Duet ISO MOD SMD 24P Dual Port
Datasheet
416Inoorder
Min.: 1
Mult.: 1
Isolation Transformers Module SMD/SMT 500 nH 1.5 kV Dual T1/E1 Interface SMD-24 17.78 mm 12.19 mm 5.84 mm SMD-T1 Tube
HALO Electronics Audio Transformers / Signal Transformers DIP ISOLATION MODULE T3/E3 Single StdTemp
Datasheet
Hindi Naka-stock
Min.: 558
Mult.: 62
Isolation Transformers Module Through Hole 200 kHz to 340 MHz 40 uH 1.5 kV 0 C + 70 C Single T3/DS3/E3/STS-1 Interface DIP-6 8.13 mm 7.11 mm 5.33 mm TD-T3 Tube
HALO Electronics Audio Transformers / Signal Transformers DIP ISOLATION MODULE T3/E3 Single ExtTemp
Datasheet
Hindi Naka-stock
Min.: 558
Mult.: 62
Isolation Transformers Module Single T3/DS3/E3/STS-1 Isolation TD-T3 Tube
HALO Electronics Audio Transformers / Signal Transformers T1/E1 ISO MOD THT 6P Single Ch StdTemp
Datasheet
Hindi Naka-stock
Min.: 1
Mult.: 1

Isolation Transformers Module Through Hole 1.2 mH 1.5 kV 0 C + 70 C Single T1/E1 Line Interface DIP-6 12.7 mm 8.89 mm 6.35 mm TD-T1 Tube
HALO Electronics Audio Transformers / Signal Transformers T3/E3/DS3/STS-1 6P ISO MOD THT Single
Datasheet
Hindi Naka-stock
Min.: 558
Mult.: 62
Isolation Transformers Module Single T3/DS3/E3/STS-1 Isolation TD-T3 Tube