Kapton® Polyimide films

Kapton® EN-A, EN-C, EN-Y, EN-Z

 
 
 

Kapton® EN-A, EN-C, EN-Y, EN-Z, where surface quality and CTE control are important

DuPont™ DuPont™ Kapton® EN-A, EN-C, EN-Y, and EN-Z are the premium performance polyimide films for use as a dielectric substrate for chip on film, flexible printed circuits   and high density interconnects. These polyimide films show superior surface quality, high modulus, and excellent CTE control, which makes them preferred dielectric films   or very fine pitch circuity and next generation IC packaging application.

Applications include:

  • Chip on Film (COF)
  • Metallized FPC
  • Semiconductor
  • Package TFT

Typical Properties for DuPont™ Kapton® EN Polyimide Films

PROPERTY

UNIT

DIRECTION

150EN-C​

normal CTE ​

isotropic​

150EN-A​

low CTE ​

anisotropic​

100EN-Y​

Ultra low CTE ​

anisotropic​

140EN-Z​

Ultra low CTE ​

isotropic​

Test Method​

Thickness

µm​

-​

37.5

37.5

25

35

JIS K 7130

Tensile Strength

MPa

MD
TD

375

400

375

430

440

450

385

450

JIS K 7161

Elongation ​

%

MD
TD

80

65

85

60

70

65

70

55

JIS K 7161

Modulus​

GPa

MD
TD

5.3

5.8

5.7

7

7.4

7.7

6.9

8.5

JIS K 7161

CTE (50-200 degC)​

ppm/degC

MD
TD

16
13

12
5

5
4

7

2

JIS K 7197

Surface roughness (Ra)​

µm

-

0.01~0.03

0.01~0.03

0.01~0.03

0.01~0.03

JIS B 0601