Properties of the basic materials

 

 

 The table shows the most important and most frequently observed values ​​of basic materials for the production of printed circuit boards. Other values ​​can be found in our own technical specifications for individual materials. Description of the variables is provided below the table.

 

Type of material / Value (unit) Tg (°C) T260 (min) T288 (min) TD (°C) CTE (ppm/K) CTI (V) ε (F/m) DB (kV) TST IPC-4101
Isola E-Cu quality 104 135 60 - 310 53 175-250 4,37 45 NO IPC-4101-/21
Isola E-Cu quality 104 KF 135 60 - 310 53 400 4,37 45 NO IPC-4101-/21
Isola IS400 140-150 >60 5 330 40-45 175-250 4,8 49 YES IPC-4101-/97/98/99/101
Isola PCL370HR 180 >60 10 340 35-40 175-250 4,37 44 YES IPC-4101-/98/99/101/126
ITEQ-140 135 60 2 310 55 175-250 4,6 60 NO IPC-4101-/21
ITEQ-158 150 >60 >30 310 40 175-250 4,0-4,4 60 NO IPC-4101-/99
ASTRA MT77 190 >60 >60 360 50-70 175-250 3,0 45,4 NO IPC-4103-/17
I-Tera MT40 200 >60 >60 360 55 175-250 3,45 45,4 NO IPC-4103-/17
Rogers RO4350B 280 > 60 > 10 390 46-50 > 600 3,48 31 YES IPC-4103-/11
VENTEC VT-901 260 >60 >60 390 50 100-175 4,15 60 NO IPC-4101-/40/41/42
Pyralux AP 195-220 60 > 10 390 25 175 3,4 150 NO IPC-4204-/11
Epoflex 220 - - 390 25 175 3,5 - NO IPC-4202-/2

 

Tg (°C) : glass transition temperature
T260 (min) : time to delamination at 260 °C
T288 (min) : time to delamination at 288 °C
TD (°C) : thermal decomposition temperature
CTE (ppm/K): Coefficient of Thermal Expansion in the z-axis
CTI (V) : Comparative Tracking Index
ε (F/m): Permittivity
DB (kV): Dielectric Breakdown
TST: Thermal Stress Test
IPC-4101: material category

 

 

 examples of the use of basic materials

Isola E-Cu quality 104 : standard industrial and consumer electronics used in non-aggressive environment.
Isola E-Cu quality 104KF : for products in a highly humid to wet environments, such as washing dishes or cleaning machines. Wherever resistance is required creeping currents.
Isola IS400 : ideal for multi-layer PCB; the automotive industry; fine structure; environment with a higher temperature
Isola PCL370HR : combines high thermal resistance and low expansion in the "Z". Ideal for multi-layer PCB with fine structures
NANYA UV BLOCK FR-4-86 : standard industrial and consumer electronics used in non-aggressive environment.
Rogers RO4350B : high-frequency material (up to 10 GHz) for the production of sensitive equipment (satellite broadcasting, ERS amplifiers, antennas ...)
VENTEC VT-901 : highly heat resistant material for testing and test equipment, military industry, commercial or industrial electronics applications that require high reliability at high temperatures
Pyralux AP : this material is ideal for multilayer flex and rigid-flex applications that require special demands on flexibility, thermal resistance and high reliability.
Epoflex : similar to using a Pyralux AP.

 

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