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Best QualityPolyimide Coverlay
Best QualityPolyimide Coverlay
Supplier Info
[China Supplier]
Contact Person : Mr. Zhang Ming
Tel : 86-571-61701018
Fax : 86-571-63103530
Product Detail
Polyimide Coverlay for the Flexible Printed Circuits

Polyimide Coverlay

Constructions

Coverlay is available in a variety of film and adhesive thicknesses. See table 1:

Models

Unit

CI-01

CI-02

CI-03

CI-05

Typical Thickness

mm±10%

0.05

0.075

0.10

0.15

Film Thickness

mm

0.025(1 mil)

0.050(2 mil)

0.075(3 mil)

0.125(5mil)

Adhesive thickness

mm

0.025

0.025

0.025

0.025

Nominal Weight(Film and adhesive)

g/m2±10%

60

100

130

200

Supply Size and Packaging

Supplied on 610mm wide by 100m(or 150m) long rolls, on nominal 3 in (76mm) cores.

Supplied on 520mm wide by 100m long rolls, on nominal 3 in (76mm) cores.

Remark: Other widths or thickness are also available by special order.

*Certified to IPC-4203/1: "Adhesive Coated Dielectric Films Use as Cover Sheets for Flexible Printed Circuitry and Flexible Adhesive Bonding Films."

Storage Conditions/Shelf Life

Polyimide coverlay composites will retain their original properties for one year when stored in the original packaging at temperatures between 4–30°C and below 90% humidity. Keep the material clean and well protected.

Coverlay should not be automatically discarded if storage conditions have deviated from these limits. We recommend that material that has not stored in these conditions be examined in a practical test before putting into production

Typical Data

All the polyimide coverlay is certified to IPC specifications and tested according to IPC Test Method TM-650. See Table 2.

Property to be tested

Unit

IPC Specification

Typical value

1. Peel Strength

-As normal conditions

-After soldering

-After aging test

N/m –width

(lb/in width)

≥1400 [7.9942]

≥1225 [6.9949]

1520 [8.6794]

1400 [7.9942]

2. Dimensional Stability

%

≤0.20

0.10

3. Resin Flow

mil/mil(adhesive thickness)

≤5:1

4.3:1

4. Volatile Content

%

≤4.0

3.6

5. Solder float

288°C/10sec.

Pass

Pass

6. Moisture Absorption

%

≤4.0

2.3

7. Dielectric strength

KV/mm

≥78.84

130

8. Chemical resistance

%

≥80

90

9. Dielectric constant

-----

≤4.0

3.5

10.Dissipation factor

-----

≤0.040

0.02

11. Volume resistivity

MΩ-cm (Damp heat)

≥106

108

12. Surface resistivity

MΩ(Damp heat)

≥105

106

A Certificate of Analysis is available with every batch. Complete material and manufacturing records for each lot, with samples of finished laminate, are retained for reference purpose.

Best QualityPolyimide Coverlay

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