TU-742 HF

Halogen Free Laminate and Prepreg
Core: TU-742 HF; Prepreg: TU-74P HF

TU-742 HF/TU-74P HF halogen free materials are made of epoxy resin and E-glass fabric. Unlike conventional FR-4 material using brominated resin as flame retardant, TU-742 HF/TU-74P HF achieve flammability class of UL94V-0 by incorporating nitrogen compounds in the materials. The materials are compatible with the AOI process and exhibit the UV-block characteristic. TU-74P HF is designed for use with TU-742 HF for making multilayer printed wire boards. TU-742 HF is also available for single/double sided application. This series of green materials are designed to eliminate the use of halogenated resins due to the potential hazardous effects from the environmental concerns. TU-742 HF laminates also exhibit superior chemical resistance, thermal stability and CAF resistance.

Main Applications
NB, PC, consumer
Server, workstation
Mobile Communication
Key Features
Halogen, antimony, and red phosphorous free
Environmental friendly materials
Compatible to PCB processes
Low coefficient of thermal expansion
Anti-CAF capability
Property Typical Values
Tg (TMA) 150°C
Td (TGA) 370°C
CTE z-axis (50 to 260 °C) 3.1%
T-260/ T288 >60 min/ >60 min
Permittivity (RC 50%) @1GHz 4.4
Loss Tangent (RC 50%) @1GHz 0.010
Industry Approvals
IPC-4101 Type Designation : /127, /128
UL Designation - ANSI Grade: FR-4.1
UL File Number: E189572
Flammability Rating: 94V-0
Maximum Operating Temperature: 130°C
Standard Availability
Thickness: 0.002”[0.05mm] to 0.062”[1.58mm], available in sheet or panel form
Copper Foil Cladding: 1/3 to 5oz (HTE) for built-up; 1/3 to 3 oz (HTE) for double sides and H to 2 oz (MLS)
Prepregs: Available in roll or panel form
Glass Styles: 106, 1080, 2113, 2116, 1506 and 7628 etc.