rubber and fiberglass. The material is

flame retardant and is specially formulated

for use as a thermally conductive insulator.

electrically isolate power sources from

heat sinks.

and physical characteristics. Surfaces are

pliable and allow complete surface contact

with excellent heat dissipation.

resistance with age. The reinforcing

fiberglass provides excellent cut-through

non-toxic and resists damage from

cleaning agents.

Note: To build a part number, visit our

website at www.bergquistcompany.com.

TYPICAL APPLICATIONS INCLUDE

• Power supplies

• Automotive electronics

• Power semiconductors

• Motor controls

CONFIGURATIONS AVAILABLE

• Sheet form, die-cut parts and roll form; with or without

pressure sensitive adhesive

PDS_SP_400_0115

FEATURES AND BENEFITS

(@50 psi)

• Original Sil-Pad material

• Excellent mechanical and physical

characteristics

• Flame retardant

PRODUCT DESCRIPTION

January 2015

PROPERTY

IMPERIAL VALUE

METRIC VALUE

TEST METHOD

Color

Gray

Gray

Visual

Reinforcement Carrier

Fiberglass

Fiberglass

—

Thickness (inch) / (mm)

0.007, 0.009

0.178, 0.229

ASTM D374

Hardness (Shore A)

85

85

ASTM D2240

Breaking Strength (lbs/inch) / (kN/m)

30

5

ASTM D1458

Elongation (% at 45º to Warp and Fill)

54

54

ASTM D412

Tensile Strength (psi) / (MPa)

3000

20

ASTM D412

Continuous Use Temp (°F) / (°C)

-76 to 356

-60 to 180

—

ELECTRICAL

Dielectric Breakdown Voltage (Vac)

3500, 4500

3500, 4500

ASTM D149

Dielectric Constant (1000 Hz)

5.5

5.5

ASTM D150

Volume Resistivity (Ohm-meter)

ASTM D257

Flame Rating

V-O

V-O

U.L. 94

THERMAL

Thermal Conductivity (W/m-K)0.9

0.9ASTM D5470

THERMAL PERFORMANCE vs PRESSURE

Pressure (psi)

10

25

50

100

200

TO-220 Thermal Performance (°C/W) 0.007"

6.62

5.93

5.14

4.38

3.61

TO-220 Thermal Performance (°C/W) 0.009"

8.51

7.62

6.61

5.63

4.64

1.82

1.42

1.13

0.82

0.54

2.34

1.83

1.45

1.05

0.69

1) The ASTM D5470 test fixture was used. The recorded value includes interfacial thermal resistance. These values are provided for

reference only. Actual application performance is directly related to the surface roughness, flatness and pressure applied.

TYPICAL PROPERTIES OF SIL-PAD 400