PCB Material List - F4B-1/2 Teflon pcb glass fabric copper-clad laminates

Types

F4B255

F4B265

Dielectric Constant

2.55

2.65

Dimension(mm)

300*250 380*350 440*550 500*500 460*610 600*500

840*840 1200*1000 1500*1000

For special dimension,customized laminates is available.

Copper thickness

0.035μm,0.018μm

Thickness and Tolerance(mm)

Laminate thickness

0.17, 0.25

0.5, 0.8, 1.0

1.5, 2.0

3.0, 4.0, 5.0

Tolerance

±0.025

±0.05

±0.05

±0.09

The laminate thickness includes the copper thickness. For special dimension,customized laminates is available.

Mechanical Strength

Warp

Thickness(mm)

Maximum Warp

Original board

Single side

Double side

0.25～0.5

0.030

0.050

0.025

0.8～1.0

0.025

0.030

0.020

1.5～2.0

0.020

0.025

0.015

3.0～5.0

0.015

0.020

0.010

Cutting/punching

Strength

Thickness1mm,no burrs after cutting,minimum space between two punching holes is 0.55mm,no delamination.

Thickness1mm,no burrs after cutting,minimum space between two punching holes is 1.10mm,no delamination.

Peel strength(1oz copper)

Normal state:≥15N/cm;No bubble, delamination, peel strength≥12N/cm(in the constant humidity and temperature, and keep in the melting solder of 260 degree Celsius±2 degree Celsius for 20 seconds).

Chemical Property

According to the properties of laminate,the chemical etching method for PCB can be used. The dielectric properties of laminate are not changed. The plating through hole can be done,but the sodium treatment or the plasma treatment must be used.

Electrical Property

Name

Test condition

Unit

Value

Density

Normal state

g/ cm3

2.2～2.3

Moisture Absorption

Dip in the distilled water of 20±2 degree Celsius for24 hours

%

≤0.1

Operating Temperature

High-low temperature chamber

degree Celsius

-50 degree Celsius～+260 degree Celsius

Thermal Conductivity

W/m/k

0.3

CTE

(typical)

0～100 degree Celsius

ppm/ degree Celsius

16(x)

21(y)

186(z)

Shrinkage Factor

2 hours in boiling water

%

 0.0002

Surface Resistivity

500V

DC

Normal state

M·Ω

≥1*104

Constant humidity and temperature

≥5*103

Volume Resistivity

Normal state

MΩ.cm

≥1*106

Constant humidity and temperature

≥9*104

Pin Resistance

500VDC

Normal state

MΩ

≥5*104

Constant humidity and temperature

≥5*102

Surface dielectric strength

Normal state

d=1mm(Kv/mm)

≥1.2

Constant humidity and temperature

≥1.1

Dielectric Constant

10GHZ

εr

2.55,2.65

(±2%)

Dissipation Factor

10GHZ

tgδ

≤1*10-3