Kapton® Polyimide films

Kapton® EN-A, EN-C, & EN-Z

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

DuPont™ DuPont™ Kapton® EN-A, EN-C, 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	140EN-Z Ultra low CTE isotropic	Test Method
Thickness	µm	-	37.5	37.5	35	JIS K 7130
Tensile Strength	MPa	MD TD	375 400	375 430	385 450	JIS K 7161
Elongation	%	MD TD	80 65	85 60	70 55	JIS K 7161
Modulus	GPa	MD TD	5.3 5.8	5.7 7	6.9 8.5	JIS K 7161
CTE (50-200 degC)	ppm/degC	MD TD	16 13	12 5	7 2	JIS K 7197
Surface roughness (Ra)	µm	-	0.01～0.03	0.01～0.03	0.01～0.03	JIS B 0601