P25N
Polyimide UL HB No-Flo® Specialty Prepreg
Isola offers a P25N product line of polyimide-based no flow prepreg materials for high temperature printed circuit applications.
Thermal Performance |
Electrical Performance |
Industry Approvals |
Tg:
250°C
Td: 383°C |
Dk:
3.67
Df: 0.018 |
IPC-4101 /42
UL - File Number E41625
|
Thermal Performance
Td: 383°C
Electrical Performance
Df: 0.018
Industry Approvals
These products consist of a polyimide resin system suitable for military, commercial or industrial electronic applications requiring superior performance and the utmost in thermal properties. These products utilize a polyimide and thermoplastic blend resin, fully cured without the use of Methylenedianiline (MDA). This results in a polymer with a high Tg without the characteristic difficulties of brittleness and low initial bond strength associated with traditional thermoset polyimides.
Product Features
- Industry Recognition
- UL File Number: E41625
- RoHS Compliant
- Performance Attributes
- Lead-free assembly compatible
- Processing Advantages
- Minimal, uniform resin flow
- No-flow Prepreg
- Adhesion to wide range of materials
- Flex films – (Mylar®, Kapton®, etc.)
- Treated or untreated copper
- Plated metals (tin, solder, nickel, etc.)
- Conventional laminate surfaces
Production & Manufacturing
Currently manufactured in North America
Product Availability
- Standard Material Offering: Prepreg
- Roll or panel form
- Tooling of prepreg panels
- Glass Fabric Availability
- E-glass
Property | Typical Value | Units | Test Method | |
---|---|---|---|---|
Metric (English) | IPC-TM-650 (or as noted) | |||
Glass Transition Temperature (Tg) by DSC | 250 | °C | 2.4.25C | |
Decomposition Temperature (Td) by TGA @ 5% weight loss | 383 | °C | 2.4.24.6 | |
Time to Delaminate by TMA (Copper removed) |
A. T260 B. T288
|
60 | Minutes | 2.4.24.1 |
Z-Axis CTE |
A. Pre-Tg B. Post-Tg C. 50 to 260°C, (Total Expansion)
|
55 TBD --
|
ppm/°C ppm/°C %
|
2.4.24C |
X/Y-Axis CTE | Pre-Tg | 13/14 | ppm/°C | 2.4.24C |
Thermal Conductivity | 0.4 | W/m·K | ASTM E1952 | |
Thermal Stress 10 sec @ 288ºC (550.4ºF) |
A. Unetched B. Etched
|
Pass | Pass Visual | 2.4.13.1 |
Dk, Permittivity |
A. @ 100 MHz B. @ 500 MHz C. @ 1 GHz D. @ 2 GHz
|
3.75 3.72 3.70 3.67
|
— |
2.5.5.9 2.5.5.9 2.5.5.9 Bereskin Stripline
|
Df, Loss Tangent |
A. @ 100 MHz B. @ 500 MHz C. @ 1 GHz D. @ 2 GHz
|
0.0140 0.0157 0.0180 0.0198
|
— |
2.5.5.9 2.5.5.9 2.5.5.9 Bereskin Stripline
|
Volume Resistivity |
A. After moisture resistance B. At elevated temperature
|
3.0 x 108 7.0 x 108
|
MΩ-cm | 2.5.17.1 |
Surface Resistivity |
A. After moisture resistance B. At elevated temperature
|
3.0 x 106 2.0 x 108
|
MΩ | 2.5.17.1 |
Dielectric Breakdown | >55 | kV | 2.5.6B | |
Arc Resistance | 130 | Seconds | 2.5.1B | |
Electric Strength (Laminate & laminated prepreg) | 44 (1100) | kV/mm (V/mil) | 2.5.6.2A | |
Comparative Tracking Index (CTI) | 4 (100-174) | Class (Volts) |
UL 746A ASTM D3638 |
|
Flexural Strength |
A. Length direction B. Cross direction
|
576 (83.6) 383 (55.5)
|
MPa (kpsi) | 2.4.4B |
Tensile Strength |
A. Length direction B. Cross direction
|
383 (55.0) 238 (35.4)
|
MPa (kpsi) | ASTM D3039 |
Moisture Absorption | 0.5 | % | 2.6.2.1A | |
Flammability (Laminate & laminated prepreg) | HB | Rating | UL 94 | |
Max Operating Temperature | 140 | °C | UL 796 | |
The data, while believed to be accurate and based on analytical methods considered to be reliable, is for information purposes only. Any sales of these products will be governed by the terms and conditions of the agreement under which they are sold. |
NOTE
Visit our site http://www.isola-group.com for more details.
Revisions:
A: Original
B: Corrected units for Flexural and Tensile Strength 10/18
C: Corrected product availability. No foil is offered for P25N 6/20
Resource Title & Summary | Date Updated |
---|---|
P25 Prepreg Supplemental | 03/20/2024 |
P25 Prepreg RoHS Declaration | 03/20/2024 |
P25N Processing Guide | 06/30/2020 |