Material Properties
We attach the table with the materials approved to Lab Circuits.
Note: values given by the manufacturers.
(*) LAB Circuits UL approved
| FR4 low Tg | FR4 mid Tg | FR4 high Tg | Enhanced Epoxy resin high Tg | Hydrocarbon / Ceramic | Hydrocarbon / Ceramic | Hydrocarbon / Ceramic | PolyImide | PolyImide Coverlay | Units | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Industry Approvals |  |
IPC 4101/21 | IPC 4101/97/98/99/101 | IPC 4101/98/99/101/126 | IPC4103/17
IPC4101/102 |
IPC 4103/10 | IPC 4103/11 | IPC 4103/11 | IPC 4204/11 | IPC 4203/1 | - |
| Dielectric Constant (Dk) | |
4.37 @1 GHz | 4.55 @1 GHz | 4.17 @1 GHz | 3.45 @10GHz | 3.38±0.05 @10 GHz | 3.48±0.05 @10 GHz | 3.54±0.05 @10 GHz | 3.4 @1 MHz | 3.6 @1 MHz | - |
| Dielectric Constant (DK) for impedance calculation | |
4.0 @ 1 GHz | 4.0 @ 1 GHz | 4.0 @ 1 GHz | 3.45 @10GHz | 3.55 @ 10 GHz | 3.55 @ 10 GHz | 3.55 @ 10 GHz | 3.4 @ 1 MHz | 3.6 @ 1 MHz | - |
| Dissipation Factor (Df) | |
0.0195 @ 1 GHz | 0.0160 @ 1 GHz | 0.0195 @ 1 GHz | 0.0031 @10GHz | 0.0027 @10 GHz | 0.0037 @10 GHz | 0.004 @10 GHz | 0.002 @1 MHz | 0.02 @1 MHz | - |
| Dielectric Strength | |
990 | 1370 | 1350 | 1133 | 780 | 780 | 1000 | 6500 | 6500 | V/mil |
| Glass Transition Temperature (Tg) | |
135 | 155 | 180 | 200 | >280 | >280 | >280 | 220 | 220 | ºC |
| Decomposition Temperature (Td) | |
- | 345 | 340 | 360 | 425 | 390 | 390 | 390 | 390 | ºC |
| Time to delamination@260ºC (T260) | |
- | 75 | >60 | >60 | >60 | >60 | >60 | - | - | s |
| Time to delamination@288ºC (T288) | |
>10 | 25 | >10 | >60 | >10 | >10 | >10 | >10 | - | s |
| CTE X | |
17 | - | 13 | 12 | 11 | 14 | 19 | - | - | ppm/ºC |
| CTE Y | |
12 | - | 14 | 12 | 14 | 16 | 17 | - | - | ppm/ºC |
| CTE Z | |
45 | 40 | 45 | 55 | 46 | 35 | 50 | 25 | - | ppm/ºC |
| CTE Z after Tg | |
208 | 190 | 225 | 290 | - | - | - | 40 | - | ppm/ºC |
| Moisture Absortion | |
0.16 | 0.13 | 0.15 | 0.1 | 0.06 | 0.06 | 0.05 | 0.8 | - | % |
| CTI | |
175-250 | 175-250 | 175-250 | 175-249 | - | - | - | 100-174 (4) | - | V |
| Flammability | |
V-0 (*) | V-0 (*) | V-0 (*) | V-0 | N/A | V-0 | V-0 | V-0 (*) | V-0 (*) | class |
| Remark | |
- | CAF low CTE | CAF Resistant | CAF Resistant | High Frequency | High Frequency | High Frequency | Adhesivless
/ Rigiflex |
Acrylic adhesive
/ Rigiflex |
- |
| Product | |
NP-140 / VT-42 | VT-481 | PCL 370HR | I-Tera® MT40 | RO4003C | RO4350B | RO4450F Prepreg | Pyralux AP (UL-V0)
Taiflex 2FP |
FR110/FR210 (UL-V0)
LF110/LF210 |
- |
| Manufacturer | |
NAN YA / Ventec | Ventec | Isola | Isola | Rogers Corporation | Rogers Corporation | Rogers Corporation | Dupont / Taiflex | DuPont | - |
Last update: 21-06-2023
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