DK140F/DK140FP

■ Tg 135±5 ℃, lead-free compatible FR-4.0 sheet
■ Low water absorption, UV-blocking and AOI compatible, flame retardant up to UL 94V-0
■Excellent heat resistance, low thermal expansion coefficient, good resistance to CAF
■ Comply with the specification requirements of IPC-4101/101.

Application

Automotive electronics, instrumentation, communication equipment, power supply, etc.

Tg

135

Td

350

CTE

3.5

Details

Test Item Unit Treatment conditions Typical value Specification value
Tg °C DSC 135 ≥ 130
Z-axis CTE ppm/°C <Tg 49 60
ppm/°C >Tg 262 300
% 50-260°C 3.5 4.0
surface resistivity After moisture resistance 2.6X10E8 ≥ 10E4
E-24/125 3.1X10E5 ≥ 10E3
volume resistivity MΩ· cm After moisture resistance 2.0X10E9 ≥ 10E6
E-24/125 3.3X10E6 ≥ 10E3
Dielectric constant 1MHz - C- 24/23/50 4.6 ≤ 5.4
Dielectric loss 1MHz - C- 24/23/50 0.015 ≤ 0.035
Arc resistance sec D-48/50 D-0.5/23 140 ≥ 60
breakdown voltage KV D-48/50 D-0.5/23 45 KV,NB ≥ 40
water absorption % D-24/23 0.12 ≤ 0.5
Flame resistance - C- 48/23/50 94V-0 94V-0
Peel strength (HTE 1OZ) N/mm 125°C 1.4 ≥ 0.7
Float288 °C/10Sec 1.7 ≥ 1.05
    After Process Solutioin 1.2 ≥ 0.8
thermal stress unetched Sec Float288 °C/10Sec >240 ≥ 10
Etched
Td thermal decomposition temperature °C 10°C/MIN, N2, 5%Wt Loss 350 >310
T288 min TMA >30 >5
T260 min TMA >60 >30
bending strength Length Direction N/mm2 A 650 ≥ 415
Cross Direction N/mm2 A 525 ≥ 345
Compared to the electrical tracking index V IEC60112Method PLC 3 -

 

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