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Liqui-Form 3500

Features & Benefits

  • Thermal Conductivity: 3.5 W/m-K
  • Dispensable pre-cured gel
  • Stable viscosity in storage and in the application
  • Excellent chemical stability and mechanical stability

Description

Liqui-Form® 3500 is a high conductivity gel thermal interface material designed for demanding applications that require a balance between dispensability and low component stress during assembly and also in the application. Liqui-Form® 3500 is a one-part, highly conformable gel with thixotropic properties. The material is precured and requires no curing, mixing or refrigeration. It’s unique formulation assures excellent thermal performance, low applied stress and reliable long-term performance. Liqui-Form® 3500 is thixotropic with a natural tack ensuring it will stay in place within the application.

Typical Applications include

  • Handheld devices
  • Bare die to heat spreader lid
  • Filling various gaps between heat-generating devices to heat sinks and housings
  • Devices requiring low assembly pressure
  • High value assemblies with rework
  • BGA, PGA, PPGA

Properties

Typical properties of Liqui-Form 3500
Properties Imperial Value Metric Value Test Method
Color Gray Gray Visual
Density (Bulk Rubber) (g/cc) 3.1 3.1 ASTM D792
Typical Use Temp (°F) / (°C) -76 to 392 -60 to 200 ***
Shelf Life @ 25ºC (months) 6 6 ***
Dispense Rate (Grams/min ) (1) 40 40 Henkel Test
Volumetric Expansion (25 to 2 75° C), ppm/K 40 40 Henkel Test
Outgassing, % Total Mass Loss 200 200 ASTM E228 modified
Carrier Thickness (inch) / (mm) 250 10,000 ASTM D149
Viscosity, High Shear (Pa-s) 0.07 0.07 0.06
Typical properties of Liqui-Form 3500
Electrical Imperial Value Metric Value Test Method
Dielectric Constant (1000 Hz) 8.1 8.1 ASTM D150
Volume Resistivity (Ohm-meter) 10^11 10^11 ASTM D257
Flame Rating V-O V-O U.L. 94
Dielectric Strength (V/mil)/(V/mm) 0.14 0.14 ASTM E595
Typical properties of Liqui-Form 3500
Thermal Imperial Value Metric Value Test Method
Thermal Conductivity (W/m-K) 3.5 3.5 ASTM D5470
  • (1) 30cc syringe, 90 psi (621 kPa), 0.100" orifice no attachment.

Downloads

Data Sheet

Gap Filler

Data Sheet

Liqui-Form 3500

RoHS Certificate

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RoHS Certificate

Liqui-Form 3500

Halogen Testing Report

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Halogen Testing Report

Liqui-Form 3500

Safety Data Sheet (SDS)

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Safety Data Sheet (SDS)

Liqui-Form 3500
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