HIST-500, HIST-100 is black oxide and reduction process chemicals for multilayerPWB.
It attains good adhesion between resin and copper by minute roughening form of metal copper, and realize high reliable PWBs without haloing.

Features

• High peel strength and high heat-resistance by the minute form of roughening the metal copper.
• By using this process, PWB can have high reliability without haloing occurrence.

Items	Conditions	Units	Black Oxide	Reduction
Treated Surface	−	−	Oxide Copper	Metal Copper
Peel Strength	Cu35μm/FR-4	kN/m	0.8~1.4	0.8~1.3
Haloing	18%HCl, 3h Dip	−	Occuring	None
Thermal Stress Test	260ºC/20s, Solder Dip	−	Pass	Pass
	288ºC/10s, 3cycles, Solder Dip	−	Pass	Pass

	Forms of copper surface after reduction
	Haloing

Applications

• Inner layer copper surface roughening for Multilayer PWBs