Single-sided Pyralux® AC Features Excellent Dimensional Stability
DuPont™ Pyralux® AC is an all polyimide single sided copper clad laminate ideal for applications that require thin, light and high density circuitry along with chip-on-flex attachment.
• Excellent dimensional stability
• Low moisture absorption
• High modulus for reliable COF wire bonding
• High flexural endurance
• Excellent thermal resistance
• UL 94 V-0 flammability rating
• Certified to IPC 4204A/11
• UL maximum operating temperature (MOT) 155C
• Available in roll widths of 250, 500, and 610 millimeters
• Available in polyimide thicknesses of 12, 20, 25, and 45 microns
• Available in copper thicknesses of 9, 12, 18, 35, and 79 microns
• Available in copper types RA and ED
• Available in standard roll length of 100 linear meters
Product Data Sheets (1)
Additional Information (1)
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INFORMATION & IDEAS
The purpose of the fillet is to prevent conductors from being cracked when the circuit is flexed during installation.
This process is used on double sided (Type 2) circuits where maximum flexibility is desired.
Even though flex circuits are very pliable and flexible, there are limits to their flexibility.
Preventing isolated stress conditions critical to ensure no premature falilure will occur in flexibile circuit
During soldering or assembly operations any stress to the conductor/pad interface can cause a fracture of the conductor.
Design options for covercoated pad hold down for single-sided and double-sided flex circuit applications