EMI Shielding Film for High-Speed FPCs
(Wrapping Type)

WILMINA®
SF-PC®4300-Z2-C

UL 94 VTM-0 (when combined with Kapton® 50H)
* Kapton® is a registered trademark of an affiliate of Qnity Electronics, Inc.

Product Overview

This shielding film for high-speed transmission FPCs can be applied to both sides of an FPC and wrapped around its edge to suppress radiated noise from the FPC edge. One method of shielding FPC edges is to connect GND through THs (through holes), but this can make the board more rigid and reduce the inherent flexibility of the FPC. By using SF-PC4300-Z2-C, radiated noise from the FPC edge can be suppressed while maintaining FPC flexibility.

Features

Edge shielding by wrapping

A polyimide protection layer provides the mechanical strength required for wrapping, enabling effective noise suppression at FPC edges.
Conformability to steps up to 200 µm

A thicker adhesive layer and isotropic conductive adhesive provide excellent conformability to steps up to 200 µm while maintaining stable connection resistance.

EMI Shielding Film for High-Speed FPCs<br> (Wrapping Type)

Main specifications

Item		SF-PC®4300-Z2-C
Transfer film thickness		54 µm
Product thickness (after pressing)		40 µm
Structure thickness (after pressing)	Protection layer thickness	17.5 µm
	Shielding layer thickness	2 µm
	Isotropic conductive adhesive layer thickness	20 µm
Adhesion strength	Adherend: Polyimide	3.0 N/cm or more
Shelf life (refrigerated)		6 months

Examples of Use

Suppression of noise from FPC edges
Shielding effectiveness by simulation

Wrapping the shielding film around the FPC edges suppresses radiated noise from the edges.