IT3/IT5
Connector System
PWB
A
SSEMBLY
N
OTES
Document Number:
ETAD-F0458
Revision 3.10
Page
39
of
73
8.4 Cleanliness Testing
Ionic cleanliness
cannot
be confirmed visually. The absence of visible residues
does not
indicate complete cleanliness. Ionograph or ion chromatography tests must be used to verify
cleanliness and fitness for use.
The
ionograph
measures
total
ionic contamination over the
entire surface
of the PWB, and is
typically used as a process indicator to monitor cleaning processes in production
environments.
Ion chromatography
measures
localized
ionic contamination in
specific areas
of the PWB, and
is typically used during development efforts to verify the cleanability of a soldering product,
the effectiveness of a cleaning agent, or process compatibility of a new component or device.
For more information on cleaning, refer to IPC-CH-65
, Guidelines for Cleaning of Printed
Boards and Assemblies
.
Nov.1.2022 Copyright 2022 HIROSE ELECTRIC CO., LTD. All Rights Reserved.
