Thermal Conductive Polyimide Film

Description

Harnawa Insulations Private Limited is a manufacturer of thermal conductive polyimide film (MT Series) in India, supplying this speciality kapton-type PI film to LED module manufacturers, power electronics OEMs, EV battery system suppliers and industrial electronics companies across India and internationally. Thermal conductive polyimide film provides thermal conductivity of >0.36 W/m·K — more than twice that of standard kapton polyimide film (0.12–0.15 W/m·K) — while maintaining full electrical insulation and the same extreme temperature range of -269°C to 400°C.

When you need a thermally conductive insulating film that also provides electrical isolation — for LED heat spreading, EV battery cell separation, IGBT module insulation or flexible heater substrates — Harnawa’s MT Series provides the answer in 25–125 μm thicknesses with custom slit widths available.

What is Thermal Conductive Polyimide Film?

Thermal conductive polyimide film (MT Series) is a speciality modification of kapton-type polyimide film where thermally conductive fillers are incorporated into the PMDA-ODA polymer to enhance thermal conductivity without compromising electrical insulation. Standard polyimide film has thermal conductivity of 0.12–0.15 W/m·K; MT Series achieves >0.36 W/m·K — enabling significantly better heat dissipation from electronics components while the film continues to provide full electrical isolation.

This combination is critical in modern power electronics, where components must dissipate heat rapidly but also remain electrically isolated from heat sinks, chassis and adjacent components.

Base Material	Kapton-type polyimide film with thermally conductive fillers
Thermal Conductivity	>0.36 W/m·K — vs 0.12–0.15 W/m·K for standard PI film
Electrical Insulation Retained	Breakdown strength 100–160 MV/m — full electrical isolation
Temperature Range	-269°C to +400°C
Flame Retardancy	UL 94 V-0, halogen-free, RoHS/REACH compliant

Polyimide Film Types & Grades — Full Range

Harnawa manufactures the complete range of kapton-type polyimide film grades. Thermal-Conductive MT Series (highlighted below) is engineered for heat dissipation with full electrical insulation:

Grade / Series	Type Code	Description & Key Use
HN Series	Standard	Standard kapton-type polyimide film, 0.5–10 mil.
FEP Coated Film	FH / FHF	FEP coated polyimide film — heat sealable.
Black PI Film	BX / BY / BL	Opaque black polyimide film, 13–125 μm.
ESD PI Film	Functional	Anti-static polyimide film for PCB protection.
Aluminized PI Film	Functional	Sputtered aluminium polyimide film for EMI shielding.
CR Film	CR / FCR / FCRF	Corona resistant polyimide film, ≥80 hr. For VFD motors.
Thermal-Conductive — This Product	MT Series	Kapton-type polyimide film with thermal conductivity >0.36 W/m·K. 25–125 μm. Breakdown 100–160 MV/m. For LED modules, power electronics and EV batteries.
NHN Composite	Laminate	Non-woven/polyimide film/non-woven. Breakdown: 8–10 kV.
Colourful PI Film	Specialty	Red, Green and Transparent polyimide film.
Voice Coil Film	Specialty	High stability polyimide film for voice coil formers.

Typical Applications of Thermal Conductive Polyimide Film

Power Electronics

IGBT module insulation
Power module substrate
Inverter insulation film
Heat sink interface layer
Power supply insulation

LED & Lighting

High-power LED modules
LED heat spreader film
Thermal interface material
LED strip substrate
Automotive lighting modules

Electric Vehicles

Battery thermal management
Motor winding insulation
EV power module film
Battery cell separator
Inverter thermal film

Electronics

5G base station cooling
Flexible heater substrates
PCB thermal management
Aerospace electronics
Medical device electronics

MT Series kapton type thermal conductive PI film for EV and electronics India

Key Features & Benefits

High Thermal Conductivity: >0.36 W/m·K — more than 2× standard kapton polyimide film (0.12–0.15 W/m·K)
Electrical Insulation Retained: Breakdown strength 100–160 MV/m despite enhanced thermal conductivity
Wide Thickness Range: 25–125 μm — suitable for a wide range of power electronics applications
High Tensile Strength: ≥130 MPa (MD) / ≥90 MPa (TD)
Same Temperature Range as Kapton: -269°C to +400°C continuous operation
RoHS / REACH Compliant: Safe for export to EU, USA and global markets

Technical Specifications — MT Series Thermal Conductive Polyimide Film

Series	MT Series — Thermal Conductive Polyimide Film
Thickness Range	25–125 μm
Density	1.42 ± 0.2 g/cm³
Tensile Strength MD/TD	≥130 / ≥90 MPa
Elongation	≥30%
Breakdown Strength	100–160 MV/m
Thermal Conductivity	>0.36 W/m·K (vs 0.12–0.15 for standard kapton PI film)
Standard Width	520 mm (custom available)

Certifications & Compliance

SAFETY

CE ListedEuropean Conformity — required for all EU market sales

MILITARY

Mil-P-46123Type 1, Item A — US Military performance specification

ENVIRONMENT

RoHS CompliantRestriction of Hazardous Substances — EU directive

CHEMICAL

REACH CompliantEU Chemical Safety regulation for export markets

FLAME

UL 94 V-0Highest flame retardancy rating — self-extinguishing

QUALITY

ISO 9001International quality management system certification

ENVIRONMENT

ISO 14001Environmental management system certification

SAFETY

Halogen-FreeNo chlorine, fluorine or bromine — safe for all markets

Why Buy Thermal Conductive Polyimide Film from Harnawa Insulations?

Manufacturer — Not a Trader

We manufacture thermal conductive polyimide film directly — better pricing and faster lead times.

Full Thickness Range

25–125 μm MT Series in stock. Custom thicknesses and slit widths on request.

Pan-India Supply

Fast dispatch from Bhiwandi to all major electronics and EV manufacturing cities across India.

Export Ready

Exporting to USA, UK, UAE, Germany, Singapore, Malaysia and more.

Supply & Packaging

Standard Width: 520 mm | Custom slit widths available
Roll Length: 1500 m standard | Custom lengths available
Storage: 15°C–30°C, 40%–70% RH, away from sunlight
Shelf Life: 24 months from manufacture date
Lead Time: 2–5 working days (standard) | 7–14 days (custom)

Related Polyimide Film Products

HN Polyimide Film — Standard kapton-type PI film
Aluminized Polyimide Film — Metallized PI film for EMI shielding and thermal spreading
Corona Resistant Polyimide Film — For inverter duty motors
NHN Polyimide Composite Film — Motor slot insulation laminate

Frequently Asked Questions — Thermal Conductive Polyimide Film

What is thermal conductive polyimide film used for?

Thermal conductive polyimide film (MT Series) is used wherever both heat dissipation and electrical insulation are needed simultaneously — including IGBT and power module insulation, LED module heat spreading, EV battery thermal management, flexible heater substrates and aerospace electronics cooling.

How does MT Series compare to standard kapton polyimide film in thermal conductivity?

Standard kapton-type polyimide film has thermal conductivity of 0.12–0.15 W/m·K. MT Series thermal conductive polyimide film achieves >0.36 W/m·K — more than 2× better heat dissipation while maintaining full electrical insulation (breakdown strength 100–160 MV/m).

What is the price of thermal conductive polyimide film in India?

Price depends on thickness, width and order quantity. Contact us at enquiry@harnawainc.com or WhatsApp +91 7276671876 for pricing on MT Series thermal conductive polyimide film in India.

About Harnawa Insulations Private Limited

Harnawa Insulations Private Limited is a manufacturer of polyimide films and polyimide products based in Bhiwandi, Maharashtra, India. We supply the complete range of kapton-type PI films across India and internationally. polyimidefilms.com is owned and maintained by Harnawa Insulations Private Limited. Contact enquiry@harnawainc.com or visit harnawainc.com.