Component - Plastics		E121855
Guide Information
FORMEX, DIV OF ILLINOIS TOOL WORKS INC
425 N GARY AVE, CAROL STREAM IL 60188-1823
Formex N3-(b)(e)(k)(L)(w)(f2)
Polycarbonate (PC), furnished as Multiple Layers of Sheets

Color	Min. Thk (mm)	Flame Class	HWI	HAI	RTI Elec (°C)	RTI Imp (°C)	RTI Str (°C)
NC, BK	0.05	VTM-0	4	4	120	-	120
	0.16	VTM-0	4	1	130	-	130
	0.19	VTM-0	4	1	130	-	130
	0.25	VTM-0	4	1	130	-	130
BK	0.25	V-0	4	1	130	-	130
	0.43	V-0	4	0	130	-	130

Comparative Tracking Index (CTI):	3	Inclined Plane Tracking (IPT) kV:	-
Dielectric Strength (kV/mm):	1.5	Volume Resistivity (10x ohm-cm):	1
High-Voltage Arc Tracking Rate (HVTR):	42	Surface Resistivity (10x ohms/square):	-
Dimensional Change (%):	-	High Volt, Low Current Arc Resis (D495):	16

(L) -	Meets the requirements for Reinforced Insulation and Supplementary Insulation requirements in IEC60950-1 , IEC62368-1, IEC61558-1, IEC60065 and IEC61347-1 at thicknesses between 0.16 mm and 0.25 mm inclusive
(b) -	May have additional suffix letter(s) indicating color.
(e) -	Meets the requirements for IEC 60950-1, IEC 61558-1 Mandrel Test at 0.16 mm, 0.19 mm and 0.25 mm thickness at 7KvAC
(f2) -	Subjected to one or more of the following tests: Ultraviolet Light, Water Exposure or Immersion in accordance with UL 746C, where the acceptability for outdoor use is to be determined by UL.
(k) -	Complies with the IEC 60695-11-5, 12 mm Flame Test (60 Sec flame duration).
NOTE -	HVTR, CTI and D495 are not dependent on thickness
w -	Elevated RTI for flammabiity applies only to thicknesses at and below 0.25mm
ANSI/UL 94 small-scale test data does not pertain to building materials, furnishings and related contents. ANSI/UL 94 small-scale test data is intended solely for determining the flammability of plastic materials used in the components and parts of end-product devices and appliances, where the acceptability of the combination is determined by UL.

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Last Revised:	2026-08-18