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LOCTITE® 3629C – Adhesive – Surface Mount Adhesive for PCB Assembly

Item Name: LOCTITE® 3629C
Manufacturer: Henkel
Technologies: Epoxy
Color: Red
Cure Type: Heat cure
Package Size: Contact to Techniq VN for details.
Shelf Life: Contact to Techniq VN for details.

1. Product Overview

LOCTITE® 3629C is a red, one-component epoxy designed for surface mount adhesive applications in PCB assembly. It is halogen-free, fast-curing, and offers high thermal mechanical strength. It is optimized for high-speed dispensing.

2. Applications

  • Bonding surface-mounted devices (SMDs) to PCBs before wave soldering
  • Suitable for high-speed dispensing with controlled dot size and shape

3. Typical Properties

Uncured Properties

Property Value
Yield point (25°C), Pa·s 165
Specific gravity 1.38
Flash point See SDS
Pot life (25°C) 7 days

Curing Performance

  • Minimum 150 sec at 120°C or 90 sec at 150°C
  • Final strength depends on PCB type, ramp-up temperature, and residence time

Cured Properties

Property Value
Coefficient of Thermal Expansion (CTE) (ppm/°C) Below Tg: 45, Above Tg: 144
Glass Transition Temperature (Tg) (°C) ≥118
Density (g/cm³) 1.4
DSC Onset (°C) 82
DSC Peak (°C) 120

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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