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BERGQUIST LIQUI FORM TLF 3800LVO – Low Viscosity Liquid Thermal Gap Filler – Electronics and Power Modules

  • Item Name: BERGQUIST LIQUI FORM TLF 3800LVO
  • Manufacturer: Henkel
  • Product Category: Thermal Interface Material (TIM)
  • Technologies: One-part, dispensable, pre-cured silicone gel
  • Applications: Handheld devices, BGA/PGA/PPGA, heat spreaders, heat sinks, low-assembly-pressure devices, high-value assemblies with rework
  • Color: Gray
  • Cure Type: Pre-cured gel (no curing required)
  • Package Size: Cartridges (30cc, 150cc, 300cc, 600cc), Pail (1 gallon, 4.3 gallons)
  • Shelf Life: 12 months

1. Product Overview

BERGQUIST LIQUI FORM TLF 3800LVO is a high-performance, thermally conductive, one-part liquid formable gel material designed for thermal management applications. It is a pre-cured, dispensable gel with low volatility, making it suitable for silicone-sensitive applications.

  • Technology: Silicone-based
  • Appearance: Gray paste
  • Cure: Pre-cured gel (no curing required)
  • Operating Temperature Range: -60°C to 200°C
  • Thermal Conductivity: 3.8 W/m-K
  • UL Flammability Rating: UL 94 V-0

2. Applications

  • Thermal interface material (TIM) for heat dissipation
  • Handheld electronic devices
  • Bare die to heat spreader lid applications
  • Filling gaps between heat-generating components and heat sinks/housings
  • Low assembly pressure applications
  • High-value assemblies requiring rework
  • BGA, PGA, PPGA packages

3. Typical Properties

Uncured Material

Property Test Method Value
Density ASTM D792 3.1 g/cc
Shelf Life @ 25°C 365 days

Cured Material

Physical Properties

Property Test Method Value
Dispense Rate (30cc syringe, 90 psi, 0.100″ orifice) 25 g/min
Siloxane Content (ΣD4-D10) ASTM F2466 <100 ppm
Heat Capacity ASTM D2169 0.74 J/g-°C
Low Shear Viscosity (@ 1.0 s⁻¹) ASTM D2196 1,200 Pa·s
High Shear Viscosity (@ 100 s⁻¹) ASTM D5099 300 Pa·s

Electrical Properties

Property Test Method Value
Dielectric Strength ASTM D149 10,000 V/mm
Dielectric Constant (@ 1,000Hz) ASTM D150 8
Volume Resistivity ASTM D257 1×10¹⁰ Ω·m

Thermal Properties

Property Test Method Value
Thermal Conductivity ASTM D5470 3.8 W/m-K

BERGQUIST microTIM mTIM 1028 Thermal Interface Coating High performance thermal management solution for nickel finished heat sinks, optical transceivers, and data center liquid cooling systems

BERGQUIST microTIM mTIM 1028 is purpose built for riding cage assemblies in servers, switches, and routers, interfacing with electroless nickel plated copper or aluminum heat sinks. It ensures stable operation in high power transceiver modules while also extending applicability to liquid cooling components, heat pipes, and fin based dissipative structures.

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