| |
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|
TirasLam ÌI7222 |
| Parameters |
Test conditions |
Guarant. values |
Typical values |
| Temperature |
| Glass transition temperarure, Òg, o C |
|
|
135± 5 |
| CTE (40 o - 120 o C), mm/ o C |
T<Tg
|
|
|
|
on Õ
|
|
8,2 x 10-6 |
|
on Y
|
|
8,2 x 10-6 |
|
on Z
|
|
8,2 x 10-6 |
Electrical |
| Permittivity at 1MHz |
Ñ - 40/23/50 |
4,8 |
4,8 |
| Dissipation Factor at 1MHz |
Ñ - 40/23/50 |
0,020 |
0,020 |
| Surface Resistivity (megaOhms), not less than |
Å - 24/125 |
7,0 x 105 |
7,0 x 105 |
| Volume Resistivity (megaOhms), not less than |
Å - 24/125 |
1,0 x 105 |
1,0 x 105 |
| Dielectric breakdown (kV) |
D - 48/50 |
45 |
45 |
Physical |
| Peel Strength, N/mm, not less than |
normal conditions |
1,8 |
1,8 |
| after heat shock (260 o Ñ/30 sec) |
1,8 |
1,8 |
| Å - 1/125 |
1,4 |
1,4 |
| Solder Float, sec, not less than |
260 o Ñ |
>60 |
>60 |
| 288 o Ñ |
>60 |
>60 |
| Bow/twist, %, not less than |
normal conditions |
<0,7 |
<0,7 |
| Moisture absorption, not more than |
D - 24/23 |
<0,1 |
<0,1 |
| Flexural Strenght, N/sm2, not less then |
normal conditions |
390 |
390 |
| tensile strength, not less than |
normal conditions |
290 |
290 |
| Flammability UL 94 |
normal conditions |
V0 |
V0 |
| punching |
|
1,0 |
1,0 |
| Sheet sizes, mm |
|
1010õ890,
1220õ1020 |
1010õ890,
1220õ1020 |
| Thickness, mm |
|
0,8-3,0 |
0,8-3,0 |
| Identification symbol |
 |
|
|
| ÌÈ 7222 is applied to production
of relief printed-circuit-boards. The conformity to his(its) type FR-4
guarantees high glass transition, incombustibility, under distorting,
that allows to use the given materials for production of printed-circuit-boards
of a high class of precision, surface mounting. The printed-circuit-board,
made on this material, differs by very high reliability. |