VT-441 Laminate/Prepreg

UL Approval: E214381 Version: B5 11/09/2017 /127/128

General Information

  • Phenolic Cured System
  • Halogen free & Mid-Tg FR4.1
  • UV Blocking
  • CAF Resistance
  • Low Z-CTE
  • Excellent Thermal Reliability

Application

Mobile Phone, Smart Phone, Computer, Instrumentation, Communication Equipment, Electronic Game Machine, VCR, etc.

Availability

  • Core Thickness: 0.002” (0.05mm) to 0.200” (5mm), available in sheet or panel form
  • Copper Foil: 1/4oz to 12oz
  • Prepregs are available in roll or panel form
  • E-Glass styles: 7628, 1506, 1500, 2113, 2313, 3313, 2116, 1080, 1086, 1078, 106 & 1067, etc.

Note: For cores ≤ 0.005”, it is recommended to use the reverse treated copper due to the low profile. The peel strength for RT foil is ≈1-2lbs/in (0.35Kg/m) less than standard foil.

Properties Prepreg Laminate
Storage Condition Temperature Below 23°C (73°F) Below 5°C (41°F) Room
Relative humidity Below 55% RH / /
Shelf Life 3 months 6 months 24 months (airproof)

The prepreg exceeding shelf life should be retested.

Properties Sheet IPC-4101E /127 /128

Properties Test Method Units Specification Typical Value
Thermal Properties
Tg DSC IPC-TM-650 2.4.25 °C - 152
TMA IPC-TM-650 2.4.24 °C 145 minimum 158
Td ASTM D3850 °C 325 minimum 385
T260 IPC-TM-650 2.4.24.1 Minute 30 minimum >60
T288 IPC-TM-650 2.4.24.1 Minute 5 minimum >30
Thermal Stress @ 288°C IPC-TM-650 2.4.13.1 Second Pass 10s >600
Z-axis CTE Before Tg IPC-TM-650 2.4.24 ppm/°C 60 maximum 38
After Tg IPC-TM-650 2.4.24 ppm/°C 300 maximum 190
Total Expansion (50~260°C) IPC-TM-650 2.4.24 % 3.5 maximum 2.2
MOT UL 94 °C - 130
Electrical Properties
DK @ 1GHz RC 50% IPC-TM-650 2.5.5.9 - 5.4 maximum 4.4
DF @ 1GHz RC 50% IPC-TM-650 2.5.5.9 - 0.035 maximum 0.014
Volume Resistivity After Moisture Resistance IPC-TM-650 2.4.17.1 MΩ-cm 1.0E+4 minimum 5.0E+8
E-24/125 IPC-TM-650 2.4.17.1 MΩ-cm 1.0E+3 minimum 5.0E+6
Surface Resistivity After Moisture Resistance IPC-TM-650 2.4.17.1 1.0E+4 minimum 5.0E+7
E-24/125 IPC-TM-650 2.4.17.1 1.0E+3 minimum 5.0E+6
Electrical Strength IPC-TM-650 2.5.6.2 Volt/mil (KV/mm) 762 (30) minimum 1200~1400 (54)
Dielectric Breakdown IPC-TM-650 2.5.6 KV 40 minimum 60
Comparative Tracking Index (CTI) ASTM D3638 Rating (Volt) - Grade 3 (175~250)
Arc Resistance ASTM D495 Second - 187
Mechanical Properties
Peel Strength (1oz) As received IPC-TM-650 2.4.8 lb/in (N/mm) - 7~9 (1.2~1.6)
After thermal stress IPC-TM-650 2.4.8 lb/in (N/mm) 6 (1.05) minimum 7~9 (1.2~1.6)
Flexural Strength Warp IPC-TM-650 2.4.4 KPsi (MPa) 60 (415) minimum 72 (500)
Fill IPC-TM-650 2.4.4 KPsi (MPa) 50 (345) minimum 58 (400)
Physical Properties
Moisture Absorption IPC-TM-650 2.6.2.1 % 0.80 maximum 0.18
Flammability UL-94 Rating V0 minimum V0

All test data provided are typical values and not intended to be specification values.

Published on: 11/09/2017

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