SP400-0.007-00-1212 - Bergquist Company

www.bergquistcompany.com

All statements, technical information and recommendations herein are based on tests we believe to be reliable, and

THE FOLLOWING IS MADE IN LIEU OF ALL WARRANTIES, EXPRESSED OR IMPLIED,INCLUDING THE IMPLIED

WARRANTIES OF MARKETABILITY AND FITNESS FOR PURPOSE.Sellers’ and manufacturer s’ only obligation shall be to

replace such quantity of the product proved to be defective. Before using, user shall determine the suitability of the product

for its intended use, and the user assumes all r isks and liability whatsoever in connection therewith. NEITHER SELLER NOR

MANUFACTURER SHALL BE LIABLE EITHER IN TORT OR IN CONTRACT FOR ANY LOSS OR DAMAGE,DIRECT,

INCIDENTAL, OR CONSEQUENTIAL,INCLUDING LOSS OF PROFITS OR REVENUE ARISING OUT OF THE USE OR

THE INABILITY TO USE A PRODUCT. No statement, purchase order or recommendations by seller or purchaser not

contained herein shall have any force or effect unless in an agreement signed by the officers of the seller and manufacturer.

PDS_SP_400_12.08

The Bergquist Company -

North American Headquarters

18930 West 78th Street

Chanhassen, MN 55317

Phone: 800-347-4572

Fax: 952-835-0430

The Bergquist Company -

European Headquarters

Bramenber g 9a, 3755 BT Eemnes

Netherlands

Phone: 31-35-5380684

Fax: 31-35-5380295

The Bergquist Company - Asia

Room 15,8/F W ah Wai Industrial Centre

No.38-40,Au Pui Wan Street

Fotan, Shatin, N.T. Hong Kong

Ph: 852.2690.9296

Fax: 852.2690.2344

Sil-Pad

400

The Or iginal Sil-Pad Material

Features and Benefits

• Thermal impedance:

1.13°C-in2/W (@50 psi)

• Original Sil-Pad mater ial

• Excellent mechanical and physical

characteristics

• Flame retardant

Sil-Pad 400 is a composite of silicone rubber

and fiberglass.The material is flame retardant

and is specially formulated for use as a

ther mally conductive insulator.The primary

use for Sil-Pad 400 is to electr ically isolate

power sources from heat sinks.

Sil-Pad 400 has excellent mechanical and

physical character istics. Surfaces are pliable

and allow complete surface contact with

excellent heat dissipation.Sil-Pad 400 actually

improves its thermal resistance with age.

The reinforcing fiber glass provides excellent

cut-through resistance . In addition,Sil-Pad 400

is non-toxic and resists damage from

cleaning agents.

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

Building a Part Number Standard Options

Sil-Pad®U.S. Patents 4,574,879; 4,602,125; 4,602,678; 4,685,987; 4,842,911 and others

Section A

Section B

Section C

Section D

Section E

NA = Selected standard option. If not selecting a standard

option, insert company name, drawing number, and

revision level.

SP400 = Sil-Pad 400 Material

SP400 0.007 AC 12/250 NA

Note: To build a part number, visit our website at www.bergquistcompany.com.

Standard thicknesses available: 0.007", 0.009"

AC = Adhesive, one side; AC2 = Adhesive, two sides; or

00 = no adhesive

_ _ _ = Standard configuration dash number,

1212 = 12" x 12" sheets, 12/250 = 12" x 250' rolls, or

00 = custom configuration

––––

TYPICAL PROPERTIES OF SIL-PAD 400

PROPERTY IMPERIAL VALUE METRIC VALUE TEST METHOD

Color Gray Gray Visual

Reinforcement Carr ier 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 (%45° to Warp andFill) 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) 1011 1011 ASTM D257

Flame Rating V-O V-O U.L. 94

THERMAL

Thermal Conductivity (W/m-K) 0.9 0.9 ASTM D5470

THERMAL PERFORMANCE vs PRESSURE

Pressure (psi) 10 25 50 100 200

TO-220 Ther mal Performance (°C/W) 0.007" 6.62 5.93 5.14 4.38 3.61

TO-220 Ther mal Performance (°C/W) 0.009" 8.51 7.62 6.61 5.63 4.64

Thermal Impedance (°C-in2/W) 0.007" (1) 1.82 1.42 1.13 0.82 0.54

Thermal Impedance (°C-in2/W) 0.009" (1) 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 perfor mance is directly related to the surface roughness, flatness and pressure applied.