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Durable digital communication transformers including PULSE TX1089NL for T1 CEPT ISDN PRI applications

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Durable digital communication transformers including PULSE TX1089NL for T1 CEPT ISDN PRI applications

Inductance : 1.2mH

Operating Temperature : -40℃~+85℃

Turns Ratio : 1CT:1CT

Description : 1CT:1CT Pulse Transformers RoHS

Mfr. Part # : TX1089NL

Model Number : TX1089NL

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Pulse Electronics T1/CEPT/ISDN-PRI Transformers

Product Overview

Pulse Electronics T1/CEPT/ISDN-PRI Transformers are designed for high-speed digital communication interfaces, including T1 (1.544 Mbps), CEPT (2.048 Mbps), and ISDN Primary Rate (PRI) applications. These transformers are engineered to meet stringent industry standards such as ITU-T G.703 and provide essential signal integrity for line interface transceiver ICs. Available in various package types including Surface Mount (SMT) and Through Hole, they offer isolation voltages up to 1500 Vrms (with some models featuring 3 kVrms reinforced insulation). The series also includes common mode chokes for EMI reduction.

Product Attributes

Brand: Pulse Electronics
Certifications: UL recognized (File E133523 (S)), TUV, EN60 950/EN 41003 (for reinforced insulation models)
RoHS Compliance: RoHS-6 Compliant
Peak Reflow Temperature Rating: 245C
Flammability: UL94-VO approved materials, meet IEC 695-2-2 (Needle Flame Test)

Technical Specifications

General Specifications:

Feature	Specification
Isolation Voltage	1500 Vrms (100% tested), 3 kVrms (Reinforced Insulation)
Operating Temperature (Standard)	0C to +70C
Operating Temperature (Extended)	-40C to +85C
ET Product	10 V-sec minimum
Common Mode Rejection Ratio (CMRR)	> 50 dB at 1 MHz
Crosstalk Attenuation (Dual Packages)	Typically 50 dB or better (100 kHz to 10 MHz)
Return Loss	Compliant with ITU-T G.703 and European national regulatory documents
Surge Voltage Capability	Meets stringent regulatory documents with proper suppression devices

Model Specific Data (Selected Examples):

Part Number	Package Type	Turns Ratio (Pri:Sec %)	OCL (mH MIN)	L (H MAX)	DCR Pri ( MAX)	DCR Sec ( MAX)	Primary Pins
PE-68841NL	AN/2 (SMT)	1CT:2CT & 1CT:2CT	1.20 & 1.20	0.80 & 0.80	1.00 & 1.00	1.70 & 1.70	12-10, 4-6
PE-68822NL	AN/1 (SMT)	1CT:2CT & 1:1.36CT	1.60 & 1.60	1.00 & 0.80	1.70 & 1.70	2.00 & 1.70	12-10, 4-6
PE-68828NL	AN/2 (SMT)	1CT:1CT & 1CT:1CT	1.20 & 1.20	0.80 & 0.80	1.00 & 1.00	1.00 & 1.00	1-3, 4-6
PE-68646NL	IS/4 (Through Hole)	1:1.58/2	1.50	0.70	0.70	1.20	10-6
PE-64952NL	HD/2 (Through Hole)	1:2CT & 1:1.36	1.20 & 1.20	0.50 & 0.80	0.80 & 0.80	1.20 & 1.00	14-12, 5-7

Mechanical Data (Examples):

Package Type	Weight	Tape & Reel	Tube
AN (SMT)	4.0 grams	250/reel	30/tube
BH (SMT)	1.0 grams	600/reel	40/tube
IS (Through Hole)	4 grams	N/A	35/tube
HC (Through Hole)	2 grams	N/A	60/tube

Common Mode Chokes:

Part Number	Package Type	OCL (H MIN)	Weight	Tape & Reel	Tube
PE-65554NL	IN/1 (Through Hole)	24.0	2 grams	250/reel	30/tube
PE-65854NL	SH/1 (Surface Mount)	47.0	2.5 grams	N/A	35/tube

2411272243_PULSE-TX1089NL_C6901979.pdf

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