FR406N
No-Flo® and Lo-Flo® Specialty Prepreg
Isola offers a FR406N family of no-flow and low-flow prepregs consisting of proprietary resin systems specifically formulated for optimal performance in bonding applications requiring minimal resin flow and consistency in lamination.
Thermal Performance
Tg:
170°C
Td: 300°C
Td: 300°C
Electrical Performance
Dk:
4.3
Df: 0.025
Df: 0.025
FR406 No-Flo and FR406 Lo-Flo® products bring the fabricator specific thermal characteristics appropriate for use in multilayer rigid-flex applications.
Attributes
Markets
Product Features
- Industry Recognition
- UL File Number: E41625
- RoHS Compliant
- Processing Advantages
- Machinable by steel rule die or punch
- Consistent dielectric spacing
- Complete encapsulation of non-planar surfaces
- Cure and form bond at low temperatures
- Allows for lamination at non-uniform pressures
- 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 Asia, North America, Europe
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) | |||
| Pressed Thickness |
A. 106 B. 1080
|
0.043 ±0.0008 (1.7 ±0.3) 0.069 ±0.0008 (2.7 ±0.3)
|
mm (mil) | — |
| Resin Content |
A. 106 B. 1080
|
65 ±1.5 | % | — |
| Resin Flow Testing |
A. 106 B. 1080
|
R&R | — |
2.3.17
|
| Modified Circle Flow |
A. 106 B. 1080
|
0.050-0.120 | — | — |
| Glass Transition Temperature (Tg) by DSC | 170 | °C | 2.4.25C | |
| Cure Temperature Recommended for Full Cure | 185 | °C | — | |
| Min. for Functional Bonding | 165 | °C | — | |
| Z-Axis CTE | Pre-Tg | 75 | ppm/°C | 2.4.24C |
| X/Y-Axis CTE | Pre-Tg | 17/20 | ppm/°C | 2.4.24C |
| Thermal Conductivity | .30 | W/m·K | ASTM E1952 | |
| Thermal Stress 10 sec @ 288ºC (550.4ºF) |
A. Unetched B. Etched
|
Pass | Pass Visual | 2.4.13.1 |
| Electric Strength (Laminate & laminated prepreg) | 70 (1750) | kV/mm (V/mil) | 2.5.6.2A | |
| Peel Strength | Standard profile copper >>> After thermal stress | 1.75 (10.0) | N/mm (lb/inch) | 2.4.8C |
| Flammability (Laminate & laminated prepreg) | V-0 | Rating | UL 94 | |
| 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
Revisions:
A: Initial release - 4/17
B: Added SI units to Electrical Strength and Peel Strength - 3/22
C: corrected z-Axis CTE value to Pre-Tg - 05/23
| Resource Title & Summary | Date Updated |
|---|---|
| FR406N Prepreg Supplemental | 03/20/2024 |
| Isola Laminate Outgassing Data Properties | 03/22/2024 |
| FR406N Processing Guide | 06/23/2020 |
| FR406N Prepreg Safety Data Sheet | 01/22/2024 |
| FR406N Prepreg RoHS Declaration | 03/20/2024 |