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Product Bulletin - PB172E
G1859 – Flexbase ™ Copper/Polyester Laminates
 

FEATURES

  • Dielectric: Stabilized PET film.
  • Adhesive: Modified polyester epoxy.
  • Available Coppers: Rolled-Annealed (RA), Electro-Deposited High-Ductility (EDHD) or As-Rolled Untreated (ARNT). EDHD foils are suited for general use and flex to install applications. RA foils are suitable for dynamic flexing applications. ARNT foils are valuable for high frequency applications that require a smooth copper surface on both sides.
  • Constructions: Contact Sheldahl Customer Support for available constructions. Custom constructions may be ordered for high volume opportunities.
  • Processing: High quality flexible circuits can be produced using standard manufacturing procedures.
  • Preferred Storage: Material should be stored in dry, ambient temperature. Excessive exposure to heat and moisture may cause copper oxidation.
  • Shelf Life: Typical expected shelf life is 12 months when stored as recommended.

 

PROPERTY TO BE TESTED

TEST METHOD
(IPC-TM-650 unless noted)

SHELDAHL TYPICAL MEAN VALUE

Peel strength, minimum, lb./in. - width
Method 2.4.9
Method B as received
Method F temp cycling
10.0
9.0
Tensile strength, minimum, lb./in.2

Method 2.4.19

22,000

Elongation, minimum percent

Method 2.4.19

90%

Flexural endurance, minimum cycles (< 2 mil)

Method 2.4.3

1,000

Dimensional Stability, maximum, percentage
Method 2.2.4
Method B
Method C
0.07
0.40
Dielectric constant, maximum (at 1 MHz)

Method 2.5.5.3

3.5

Chemical Resistance percentage

Method 2.3.2, Method A

90%

Dissipation factor, maximum (at 1 MHz)

Method 2.5.5.3

0.015

Volume Resistivity, minimum megohm-cm

Method 2.5.17

106

Surface resistance minimum, megohms

Method 2.5.17

104

Dielectric strength, minimum volts/mil

ASTM-D-149

3,500

Moisture and Insulation Resistance, minimum, megohms

Method 2.6.3.2

104

Moisture Absorption, maximum, percent

Method 2.6.2

0.5%

  • Based on 3 mil film x 1 oz treated copper. Flexural Endurance data is based on 2 mil PET x 1 oz treated copper.
  • Sheldahl does not guarantee, nor will it accept obligation or liability based on the use of this data. Values may vary dependent upon material construction. All data subject to change without notice.

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