3M

™ Thermally Conductive Adhesive Tapes 8940 / 8943

2/4

Typical Properties

and Performance

Characteristics

Note: The following technical information for 3M

Tape 8940 / 8943 should be considered representative or typical only and

should not be used for specification purposes.

Thermal Properties

Test

Unit

Value

Test Method

Thermal Conductivity at 25 °C

W/m*K

0,9

ASTM D 5470

Coefficient of Thermal Expansion

(-40 to 150°C)

mm/°C

140 E -06

TMA

Electrical

Properties

Test

Unit

Value

8940

8943

Test Method

Breakdown Voltage typical value *

kV

10.3

9.8

IEC 60243-1

Dielectric Strength typical value *

kV/mm

55

52

IEC 60243-1

Volume Resistivity

Ω*cm

2,5 x 10

13

ASTM D257

* Average value (not for specification purposes)

Mechanical

Properties

Test

Unit

Value

Test Method

20 min dwell time at room temp.

N/cm

5,0

AFERA 5001

24 h dwell time room temp.

N/cm

6,0

AFERA 5001

at 150 °C

N/cm

4,9

AFERA 5001

90° Peel Adhesion to

Aluminium Substrate

at 180 °C

N/cm

2,4

AFERA 5001

Overlap Shear

20 min dwell time at room temp.

MPa

5,3

ASTM D 1002

24 h dwell time room temp.

MPa

9,0

ASTM D 1002

After 24 h @ 150 °C

MPa

6,8

ASTM D 1002

After 24 h @ - 40 °C

MPa

9,0

ASTM D 1002

Holding Power

1000 g load @ room temp.

Minutes

10000+

AFERA 4012

500 g load @ 70 °C

Minutes

10000+

AFERA 4012

Tensile strength

Tensile Strength

N/mm²

6-7

EN ISO 527-2

Elongation at break

%

80-120

EN ISO 527-2

Liner properties

Liner release

cN/25,4

mm

15

FINAT TM3

Thermal Stability

225 °C Dwell @ 60 min

(Tape was applied between a glass

and an aluminium panel)

Visual

No Change

3M

Temperature

Performance

Solder Reflow process according

to JEDEC J-STD-020C (Level 1)

Visual

Test in

process

3M

Continuous Operating Temperature

Range

°C

- 40 up to

150

3M