Photosensitive dry film "PHOTOCAST"

HM series were developed for electro-forming such as metal mask.They have an excellent resolution which contributes fine pattern thick plating.

Features

• Thick resist layer becomes possible by repeating lamination with good adhesion and resolution.
• Smooth sidewall of plated line due to the smooth resist profile.

Photo characteristics

Item	Unit	HM-4056	HM-4075	HM-40112
Thickness	μm	56	75	112
Exposure energy*	mJ/cm2	85	130	270
Adhesion*	μm	22	35	32
Resolution*	μm	27	35	50

*:Exposed by collimated light type, Hitachi Test Pattern No.G2, No.3. (PET type)

Physical Properties

Item	Condition		HM-4075	Sample A
Surface hardness	*1 Pencil hardness	Plastic deformation	HB	B
		Cohesive fracture	4H	3H
Resistance of soldering	260°C/30 sec.		Good	Good
	X°C/10 sec.		280°C	280°C
Resistance to dipping in acid agents	2H-H2 SO4/15min.		Good	Good
	23°C
Resistanse to dipping in orgaic solvent	IPA/15min./23°C		Good	Good
	MEK/23°C/X sec.		570	120

*:JIS K5600-5-4

Resist profile