Polyimide
POLYIMIDE - VERY HIGH TG LAMINATE (TG 250)
Polyimide laminates are resin laminates used for circuit boards designed to operate in high temperature environments.
These laminates are suitable for all kind of applicatons that require high temperature resistance.
For prototypes and small series production within its factory, Safe proposes the following standard Polyimide laminate reference :
Standard very high TG polyimide
VENTEC VT 901 - Thickness : 0,25 .. 2,0 mm
Other laminates and thicknesses : on deman
TG (Transition Glass): Temperature at which the molecular structure of the material changes.
| Unit | IPC TM-650 | SH260 | VT901 | |
|---|---|---|---|---|
| TG | °C | 2.4.25 | 250 | 250 |
| Cte-z | ppm/°C | 2.4.24 | 45 | 50 |
| Dielectric constant | etched@1MHZ | 2.5.5.2 | 4.12 | 4,5 |
| Electrical stregth | KV/mm | 2.5.6.2 | 85 | 54 |
| Dieletric breakdown | KV | 2.5.6 | 40 | 60 |
| Surface resistivity | MO | 2.5.17.1 | 4.8*10^8 | 5*10^8 |
| Tracking resistance CTI | V | 2.4.24 | - | PLC4 |
| Td260 | min | 2.4.24.1 | - | >60 |
| Td288 | min | 2.4.24.1 | - | >60 |
| Td value | °C | 2.4.24.6 | 429 | 390 |
| Flammability | Grade | UL94 | UL94-V0 | UL94-V0 |
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