Pulse Transformers

Part Number	Description / PDF	Quantity
TTER09-0478S1 Mentech Technology USA Inc.	POWER TRANSFORMER	0
G2405CG Mentech Technology USA Inc.	SINGLE LAN XFMR 1000 BASE-T	400
G2497CG Mentech Technology USA Inc.	SINGLE LAN XFMR 1000 BASE-T	400
TTER09-0568S1 Mentech Technology USA Inc.	POWER TRANSFORMER	0
H1201DG Mentech Technology USA Inc.	SINGLE LAN XFMR 10/100 BASE-T	25
H1605DG Mentech Technology USA Inc.	SINGLE LAN XFMR 10/100 BASE-T	20
TTER09-0458S1 Mentech Technology USA Inc.	POWER TRANSFORMER	0
CL4532A-201 Mentech Technology USA Inc.	CHIP LAN XFMR 10/100/1000 BASE-T	0
TTER09-0586S1 Mentech Technology USA Inc.	POWER TRANSFORMER	500
H1631CG Mentech Technology USA Inc.	SINGLE LAN XFMR 10/100 BASE-T	1400
G4818CG Mentech Technology USA Inc.	DUAL LAN XFMR 1000 BASE-T	180
G4802CG Mentech Technology USA Inc.	DUAL LAN XFMR 1000 BASE-T	300
G2488CE Mentech Technology USA Inc.	SINGLE LAN XFMR 1000 BASE-T	400
G1801DG Mentech Technology USA Inc.	SINGLE LAN XFMR 1000 BASE-T	30
H4001CG Mentech Technology USA Inc.	QUAD LAN XFMR 10/100 BASE-T	400
GJ2042Q Mentech Technology USA Inc.	LAN XFMR 10/100/1000 BASE-T	400
H4807CG Mentech Technology USA Inc.	QUAD LAN XFMR 10/100 BASE-T	300
TOEP13-0155S1 Mentech Technology USA Inc.	POE TRANSFORMER	0
H2002DG Mentech Technology USA Inc.	DUAL LAN XFMR 10/100 BASE-T	24
H2052DG Mentech Technology USA Inc.	DUAL LAN XFMR 10/100 BASE-T	24

Pulse Transformers

1. Overview

Pulse transformers are specialized electromagnetic devices designed to transfer electrical pulse signals between circuits while maintaining galvanic isolation. They play a critical role in modern electronics by enabling efficient signal transmission, voltage level conversion, and noise suppression. Their unique ability to handle fast transient signals makes them essential in power electronics, telecommunications, and industrial control systems.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
Signal Pulse Transformer	High bandwidth, fast rise time (ns level), low distortion	Digital communication interfaces (RS485, Ethernet)
Power Pulse Transformer	High voltage isolation (>1kV), high efficiency (>90%)	Switch-mode power supplies (SMPS), motor drives
High-Voltage Pulse Transformer	Multi-kV insulation, partial discharge resistance	X-ray generators, radar systems
Wideband Pulse Transformer	Frequency range: 100kHz-100MHz, flat response curve	RF amplifiers, test equipment

3. Structure and Components

Typical construction includes:

Primary/secondary windings: Enamelled copper wire with precise turn ratio
Magnetic core: Ferrite (high permeability), powdered iron (high saturation)
Insulation system: Multi-layer dielectric barriers, vacuum pressure impregnation
Termination: Surface-mount pads or through-hole pins

Advanced designs use planar transformers with PCB-integrated windings for improved thermal management.

4. Key Technical Parameters

Parameter	Typical Range	Importance
Turns Ratio	1:1 to 1:100	Voltage scaling accuracy
Frequency Range	100kHz-10MHz	Signal integrity maintenance
Isolation Voltage	500V-30kV	Safety compliance (UL/IEC)
Pulse Rise Time	1ns-50ns	Digital signal fidelity
Leakage Inductance	<1 H	Efficiency optimization

5. Application Fields

Power Electronics: Isolated gate drivers for IGBT/MOSFET
Telecommunications: DSL line interface units
Medical Equipment: Patient-isolated monitoring systems
Industrial Control: PLC signal transmission
Automotive: EV battery management system (BMS) isolation

Case Study: In electric vehicle chargers, pulse transformers enable 1500V isolation between grid and battery systems while maintaining 98% signal integrity at 2MHz switching frequency.

6. Leading Manufacturers

Manufacturer	Key Product Series	Specifications
Coilcraft	Pulse-Hi Series	1:1.4 ratio, 25kV isolation, 100MHz bandwidth
Pulse Electronics	PA1538NL	1:16 ratio, 3kV isolation, 100ns rise time
TDK-Lambda	CUT100	2.5kV isolation, 2MHz frequency, SMD package

7. Selection Guidelines

Key considerations:

Match turns ratio with driver/receiver voltage requirements
Verify insulation class against system safety standards
Check frequency response vs. signal bandwidth requirements
Consider thermal rating for continuous power operation
Evaluate PCB footprint constraints (through-hole vs SMD)

8. Industry Trends

Current development directions include:

Miniaturization through nanocrystalline core materials
Integration with EMI filtering components
Increased operating frequencies (>10MHz) for 5G infrastructure
SiC/GaN compatible designs for wide bandgap power devices
Automotive-grade models for 800V EV systems