Name: 100mm x 100mm - Kapton® 300FN929 - A0 - 0.0762mm | DuPont™
SKU: 93136
Price: 5.988 GBP
Availability: InStock

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Description

Kapton® 300FN929 is a premium-grade, heat-sealable polyimide film engineered by DuPont. This versatile material combines the exceptional thermal, electrical, and mechanical properties of Kapton® HN with the advanced capabilities of FEP fluorocarbon resin. Its unique three-layer construction—comprising a Kapton® HN core sandwiched between two FEP layers—makes it ideal for demanding industrial and aerospace applications.

This high-performance film delivers consistent results for advanced engineering needs, making Kapton® 300FN929 the top choice for applications requiring heat sealing, chemical resistance, and reliability under extreme conditions.

Benefits

Heat Sealability: The FEP layers enable easy bonding and sealing for precision assemblies.
Thermal Stability: Performs reliably across a broad temperature range, maintaining dimensional and physical integrity.
Chemical Resistance: Withstands exposure to harsh chemicals, ensuring long-term performance in challenging environments.
Versatility: Offers superior performance for electrical insulation, flexible printed circuits, and high-temperature sealed enclosures.

Features

Recommended Uses

Kapton® 300FN929 is widely used in electrical insulation for motors and transformers, flexible printed circuits, and heat-sealed enclosures in aerospace, electronics, and industrial sectors.

Table 1 – DuPont™ Kapton® FN Polyimide Film Types

Designation	FEP mil (µm)	HN mil (µm)	FEP mil (µm)
120FN616	0.10 (1.5)	1.00 (25.4)	0.10 (2.5)
150FN019	0.50 (12.7)	1.00 (25.4)	-
200FN919	0.50 (12.7)	1.00 (25.4)	0.50 (12.7)
200FN011	-	1.00 (25.4)	1.00 (25.4)
250FN029	-	2.00 (50.8)	0.50 (12.7)
300FN021	-	2.00 (50.8)	1.00 (25.4)
300FN929	0.50 (12.7)	2.00 (50.8)	0.50 (12.7)
400FN022	-	2.00 (50.8)	2.00 (50.8)
500FN131	1.00 (25.4)	3.00 (76.2)	1.00 (25.4)

Table 2 – Mechanical Properties of DuPont™ Kapton® HN polyimide film

Property	0.50 (12.7)*	1.00 (25.4)*	2.00 (50.8)*	3.00 (76.2)*	5.00 (127)*	Method
Tensile Strength, psi (MPa) at 23°C (73°F). Machine Direction (MD) and Transverse Direction (TD), min.	20,000 (138)	24,000 (165)	24,000 (165)	24,000 (165)	24,000 (165)	ASTM D-882-91, Method A, using an Instron Tensite Tester (specimen size: 1/2” x 6” [12.7 mm x 152 mm]; jaw separation: 4” [102 mm]; jaw speed: 2”/min [51 mm/min]). Calculate the average of five specimens based on original measured thickness.
Elongation, %, MD and TD, min.	35	40	45	50	50	Same as above.
Shrinkage, %, MD and TD at 200°C (392°F), max.	-	0.3	0.35	0.35	0.35	The percent shrinkage is obtained for either the MD or TD using the average of three measurements in either direction before and after conditioning. Prior to measurement, the 12” x 12” (305 mm x 305 mm) specimen is conditioned by freely suspending it for 2 hr** in an oven controlled to 200°C (392°F).
Moisture Absorption, %, max.	4.0	4.0	4.0	4.0	4.0	ASTM D-570-92, using 24-hr immersion at 23°C (73°F). Average of three specimens.

Table 3 – Electrical Properties of DuPont™ Kapton® HN polyimide film

Property	0.50 (12.7)*	1.00 (25.4)*	2.00 (50.8)*	3.00 (76.2)*	5.00 (127)*	Method
Dielectric Strength, AC V/mil (kV/mm), min.	3,000 (118)	6,000 (236)	5,000 (197)	4,500 (177)	3,000 (118)	ASTM D-149-97 (Average of ten specimens.) Flat sheets in air placed between 1/4” (6 mm) diameter brass electrodes with 1/32” (0.8 mm) edge radius subjected to 60 cycles AC voltage at 500 V/sec rate of rise to the breakdown voltage.
Volume Resistivity, ohm-cm at 200°C (392°F), min.	10¹²	10¹²	10¹²	10¹²	10¹²	ASTM D-257-93
Dielectric Constant at 1 kHz, max.	3.4	3.4	3.4	3.5	3.5	ASTM D-150-94. Use conducting silver paint electrodes, two-terminal system of measurement at standard conditions. Results are based on an average of five tests using measured thickness of specimens.
Dissipation Factor at 1 kHz, max.	0.0050	0.0036	0.0036	0.0036	0.0036	Same as above.

Table 4 – Dielectric Strength of DuPont™ Kapton® FN polyimide film

Gauge Construction	Minimum Breakdown V/mil (kV/mm)
120FN616	4,200 (165)
150FN019	3,700 (146)
200FN919	3,200 (126)
200FN011	3,200 (126)
250FN029	2,750 (108)
300FN021	2,700 (106)
300FN929	2,700 (106)
400FN022	2,200 (87)
500FN131	2,200 (87)

Table 5 – Shrinkage of DuPont™ Kapton® HPP-ST polyimide film

Property	0.50 (12.7) mil (µm)	1.00 (25.4) mil (µm)	2.00 (50.8) mil (µm)	3.00 (76.2) mil (µm)	5.00 (127) mil (µm)
Shrinkage, %, MD and TD at 200°C (392°F), max.	0.10	0.10	0.10	0.10	0.10

Kapton FN Datasheet

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Shipment Order No.	Shipment Date	Shipment Quantity
#56534	1/1/2025	1000
#56534	15/2/2025	1000
#56534	12/3/2025	1000

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Kapton® 300FN929 – A0 – 0.0762mm | DuPont™

Thermally Conductive Subsrate Polyimide Film

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Kapton FN Datasheet

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