Description

3M™ Thermally Conductive Acrylic Interface Pad 5500H is a conformable thermal interface material designed to efficiently transfer heat from heat-generating components to cooling devices, enhancing device reliability and longevity. Composed of a slightly tacky acrylic elastomer filled with thermally conductive ceramic particles, this pad provides excellent thermal conductivity and electrical insulation properties. Its softness and conformability allow it to fill gaps and accommodate non-flat surfaces, ensuring effective heat dissipation. Notably, it does not contain intentionally added silicone, eliminating concerns related to siloxane VOCs or oil bleeding. The pad is UL94 V-0 listed, indicating its flame-retardant properties. Typical applications include battery cooling, power electronics, and human-machine interface (HMI) displays.

Benefits

Efficient Heat Transfer
Soft and Conformable
Silicone-Free and Flame Retardant

Features

High Thermal Conductivity

Offers a thermal conductivity of 1.96 W/m-K (minimum 1.70 W/m-K), ensuring efficient heat transfer from heat-generating components to heat sinks or other cooling devices.

Conformable and Flexible

The pad is soft and conformable, allowing it to fill gaps and adapt to non-flat surfaces, improving thermal contact and minimizing thermal resistance.

Flame Retardant

UL94 V-0 listed, providing enhanced fire safety for applications where flame resistance is critical.

Silicone-Free

Contains no intentionally added silicone, making it ideal for applications sensitive to siloxane outgassing and oil bleeding.

Pressure-Sensitive Adhesive

Features a slightly tacky surface that aids in easy placement and assembly without the need for additional adhesives.

Electrical Insulation

Offers electrical insulation properties, making it suitable for use in sensitive electronic applications where dielectric protection is required.

Recommended Uses

Used in electric vehicle (EV) battery packs and other battery systems to manage heat and improve performance and lifespan.
Applied in power supplies, inverters, and semiconductor devices to efficiently transfer heat away from high-power components.
Used in touchscreen displays, control panels, and other HMI devices to dissipate heat generated by the electronics.
Ideal for LED modules and lighting systems, where effective thermal management is necessary to enhance light output and prevent overheating.
Found in laptops, gaming consoles, and smartphones to manage heat dissipation and maintain optimal performance in compact electronic devices.
Used in automotive ECUs, sensors, and powertrain components to ensure reliable operation under high-temperature conditions.
Applied in high-performance industrial machinery, robotics, and automation systems, helping to manage heat in critical components.

Product Construction

Colour	White with light gray dots
Base resin	Acrylic
Pad thickness	0.5, 1.0, 1.5, 2.0 (thicker pads available upon request)
Primary filler type	Ceramic
Product liner	PET film

Physical Properties

Property	Method	Typical Value
Thermal conductivity (W/mK)b	3M method* 1	3.0
Thermal conductivity (W/mK)	ASTM 5470	2.0
Hardness (Shore 00)	Asker C	40
Hardness (Shore 00)	Shore 00	65
Flammability*2	UL94	V-0
Dielectric Strength (kV/mm)	ASTM D149	18
Volume Resistivity (Ω-cm)	ASTM D149	15 x 1012
Operating Temperature Range	3M test method	110-130°C

Heat Resistance

3M™ Thermal Conductive Acrylic Interface Pad 5500H has a high temperature (130°C durability). Samples that are aged for 2,000 hours at 130°C ambient temperature show no significant change in thermal conductivity or hardness.

3M 5500 Datasheet

Materials Direct

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Ben Horton

11:33 03 Jan 25

I have been searching for a company to help me out with a complex heat transfer material and I cannot recommend Materials Direct enough.

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18:37 04 Nov 24

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L Ly

11:04 01 Nov 24

⭐☆☆☆☆

I am beyond disappointed with the lack of transparency and poor service from Materials Direct. I placed an order in October 2024 and only received two of the smaller items. The rest were refunded, yet I was still charged more than the original delivery cost of £77.50 – even though the larger items justifying that cost were not delivered. Shockingly, the delivery charge was greater than the value of the items I actually received.

There is a complete lack of clear terms and conditions addressing delivery charges in cases of partial fulfillment, which leaves customers like me paying excessive fees with no justification. This experience was frustrating and inconvenient, and I expected far better service and transparency from a company of this scale. Materials Direct needs to review its policies and ensure customers aren’t unfairly charged in cases where orders are not fully delivered.

Martin Umney

18:26 11 Jul 24

Materials direct wwre very helpful and prompt with the deliveries.
I will be using again

Katie Harper-Penman

10:19 22 Nov 23

Quick service

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15:41 10 Aug 23

Excellent service and a great range of products

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05:17 31 Jul 23

Karen Giles

16:12 02 Jul 23

Really good quality parts, great price and arrived early, couldn't ask for more.

Ross Gentry

09:40 22 Nov 22

Great to find a fast and competitively priced UK company, who can support all scales of product development.

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Amazing quality products perfectly cut to size. Express delivery (a bit expensive but on time )

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08:02 13 Sep 21

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15:25 05 Feb 20

very fast reply, very good order following and delvery in 24H. to recap a verry good experience with Materials Direct for a verry urgent need. I recommand a lot

Kiran Rabadiya

11:59 11 Sep 19

Lead Time	Discount
24Hrs (working day)	N/A
48Hrs - 4 days	1.5% discount
5 days - 6 days	2% discount
7 days - 11 days	2.5% discount
12 days - 13 days	3% discount
14 days - 29 days	3.5% discount
30 days - 34 days	4% discount
35 days+	5% discount

Despatch	Total number of parts	Add Manufacturers COFC	Add First Article Inspection Report	Add Materials Direct COFC	Actions

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Order Total	Discount
£1 - £500	N/A
£501 - £1000	1% discount
£1001 - £2500	2% discount
£2501 - £5000	3% discount
£5001 - £10000	4% discount
£10001 - £25000	5% discount
£25001 - £50000	7.5% discount
£50001+	10% discount

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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Description