Technical Data
January 2015
3M
™
Thermally Conductive Acrylic Interface Pad
5590H
Product Description
3M™ Thermally Conductive Acrylic Interface Pad 5590H is a soft acrylic based pad designed to provide a preferential
heat transfer path away from heat generating components. Because of its softness, 3M Interface Pad 5590H can
decrease the load to integrated circuit chips during compression, and provides good tack to many surfaces. These
properties lead to a high performance non-silicone based thermal pad. 3M Interface Pad 5590H is a higher thermal
conductivity and somewhat firmer acrylic thermal pad, versus 3M Interface Pad 5589H.
• Good softness and conformability to non-flat surfaces.
• Excellent compressive stress relaxation.
• High thermal conductivity.
• UL94 V-O certified (File No. E176845).
• Good surface tack leads to low thermal resistance at surface.
• Non-silicone acrylic elastomer.
• Good dielectric performance.
• Excellent durability for long term thermal conductivity and electric insulation stability.
Product Construction
Film liner (Roll type: Film on firm layer)
Thermally conductive firm acrylic elastomer (very low tack) surface
Thermally conductive soft acrylic elastomer (low tack) core
Dielectric Data
100MHz
Dielectric
constant
5590H
500MHz
Dielectric
constant
Dielectric
tangent
tan
d
0.024
Dielectric
constant
1GHz
Dielectric
tangent
tan
d
0.024
Dielectric
tangent
tan
d
0.03
e
5.7
e
5.5
e
5.4
1.0mm t
3M
™
Thermally Conductive Acrylic Interface Pad 5590H
Typical Physical Properties and Performance Characteristics
Note:
The following technical information and data should be considered representative or typical only and should not be used for
specification purposes.
Property
Color
Thickness (mm)**
Thermal Conductivity (W/m-K)
Flammability
Density (g/cm
3
, @ 25°C)
Hardness
Volume Resistivity (Ω-cm)
Dielectric Strength (kV/mm)
Method
—
5 mm dia. dial gauge
3M method
UL94
JIS K6249
Asker C
Shore 00*
JIS K6249
JIS K6249
Value
3M™ Thermally Conductive Acrylic Interface Pad 5590H
Light grey / White
0.5 / 1.0 / 1.5
3.0
V-O
2.1
30 (data for conformable layer)
60
2.7 x 10
12
33
Note: *
Shore 00 test method results are based on a 6mm thick sample. Results will vary with sample thickness. Sample tested to soft layer side of the pad.
**Tolerances
of 1 mm and 1.5 mm = +/-10%, 0.5 mm +/- 0.1 mm.
3M™ Thermally Conductive Acrylic Interface Pad 5590H
Heat Stability
Duration (hrs)
Thermal Conductivity (W/m-K)
Hardness (Asker C)
Appearance
Aged at 110°C in high temperature chamber.
Initial
3.0
30
—
500
3.0
33
No effect
1000
3.0
33
No effect
2000
3.0
34
No effect
3M™ Thermally Conductive Acrylic Interface Pad 5590H
UL Rating
In Service Temperature Resistance
Short Term
(Hours-Days)
110-130°C
Long Term
(Weeks-Months)
90-100°C
UL94 V-0
(2)
3M
™
Thermally Conductive Acrylic Interface Pad 5590H
Shelf Life
3M™ Thermally Conductive Acrylic Interface Pad 5590H shelf life is 12 months from date of manufacture when stored
at room temperature conditions (20-25°C & 50%RH ) and in the products original packaging.
An attribute of the product that can vary with storage is the cosmetic appearance of the material. Slight yellowing may
occur and is considered normal for these type of products. Within the shelf life period, liner release can gradually change
and should be considered to ensure robust end use and processing. Gradual liner release changes that are within the liner
release specification for the shelf life period noted are typical for these products.
Technical Information
The technical information, recommendations and other statements contained in this document are based upon tests or
experience that 3M believes are reliable, but the accuracy or completeness of such information is not guaranteed.
Product Use
Many factors beyond 3M’s control and uniquely within user’s knowledge and control can affect the use and performance
of a 3M product in a particular application. Given the variety of factors that can affect the use and performance of a 3M
product, user is solely responsible for evaluating the 3M product and determining whether it is fit for a particular purpose
and suitable for user’s method of application.
Warranty, Limited Remedy, and Disclaimer
Unless an additional warranty is specifically stated on the applicable 3M product packaging or product literature,
3M warrants that each 3M product meets the applicable 3M product specification at the time 3M ships the product.
3M MAKES NO OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY
IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED
WARRANTY OR CONDITION ARISING OUT OF A COURSE OF DEALING, CUSTOM OR USAGE OF TRADE. If the 3M product
does not conform to this warranty, then the sole and exclusive remedy is, at 3M’s option, replacement of the 3M product
or refund of the purchase price.
Limitation of Liability
Except where prohibited by law, 3M will not be liable for any loss or damage arising from the 3M product, whether
direct, indirect, special, incidental or consequential, regardless of the legal theory asserted, including warranty, contract,
negligence or strict liability.
Electronics Materials Solutions Division
3M Center, Building 225-3S-06
St. Paul, MN 55144-1000
1-800-251-8634 phone
651-778-4244 fax
www.3M.com/electronics
3M is a trademark of 3M Company.
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