Underfill Encapsulant Supplier Malaysia
- Also known as
- Semiconductor Underfill
- Electronic Underfill Material
Underfill encapsulant is a filled thermosetting material placed beneath electronic components to improve mechanical support and reliability. It is widely evaluated for flip-chip, BGA, CSP and other package constructions exposed to thermal and mechanical stress.
The main commercial types are capillary-flow, no-flow and reworkable underfills. Selection depends on package gap, filler size, viscosity, dispense equipment, flow distance, cure window, adhesion, thermal expansion and the reliability tests defined by the assembler.
Underfill is used in semiconductor packaging, consumer electronics, industrial modules and qualified automotive assemblies. It is not epoxy moulding compound, die-attach film, conformal coating or ordinary potting resin, even though all can be epoxy-based electronic materials.
Send the package geometry, assembly process, cure limits, reliability target, required quantity and dispensing format. The quotation confirms the candidate formulation, storage conditions, documents, packing and delivery schedule.
- Grade
- capillary flow, no-flow, reworkable, low-temperature cure
- Appearance
- black, grey or translucent filled liquid or paste depending on grade
Underfill Encapsulant grades and forms
We supply several forms to suit different formulating and dosing setups. If you need a size that is not listed, ask us.
| Grade | Form | Assay | Typical use | Packing |
|---|---|---|---|---|
| Capillary-flow underfill | low-viscosity filled liquid | Viscosity, filler size, flow distance, cure profile and reliability targets matched to package geometry | Post-reflow filling beneath flip-chip, BGA and similar packages by capillary action. | Cartridge, syringe or pail presentation is confirmed with the quotation. |
| No-flow underfill | dispensable filled liquid or paste | Flux compatibility, placement behaviour, cure profile and void control confirmed for the assembly process | Pre-applied underfill for compatible component placement and reflow assembly routes. | Cartridge or syringe packing is confirmed with the offer. |
| Reworkable underfill | controlled-viscosity liquid or paste | Adhesion, cure, thermal performance and rework window matched to the device and board | Electronic assemblies where removal and replacement may be required during manufacturing or repair. | Cartridge or syringe format is confirmed with the quotation. |
How to buy underfill encapsulant from ChemTrade
Request a quote for underfill encapsulant
Use the form below to request a quotation. You can also email sales@chemtrademalaysia.com or send us a message on WhatsApp.
Specifications
| Parameter | Value | Method |
|---|---|---|
| Product type | filled thermosetting electronic encapsulant system | — |
| Flow selection | capillary-flow, no-flow or controlled-dispense grade | — |
| Processing controls | viscosity, filler size, dispense behaviour, cure profile and voiding | — |
| Reliability controls | adhesion, glass transition, thermal expansion and moisture performance evaluated by application | — |
| Appearance and colour | black, grey or translucent system depending on inspection and formulation needs | — |
Underfill Encapsulant applications
Safety and handling
Store sealed within the temperature range stated for the quoted formulation. Control thawing, conditioning, contamination and working time according to the product information.
Common questions about underfill encapsulant
What does an underfill encapsulant do?
Underfill fills the space beneath an electronic package, supporting stress distribution, adhesion and reliability during thermal cycling, vibration and mechanical loading.
Is underfill encapsulant the same as epoxy moulding compound?
No. Underfill is dispensed beneath mounted components, while epoxy moulding compound encapsulates semiconductor devices through a different transfer or compression moulding process.
What is the difference between capillary and no-flow underfill?
Capillary underfill is dispensed after attachment and flows into the gap, while no-flow material is placed before component mounting and reflow.
When is reworkable underfill selected?
Reworkable grades are considered when package removal may be needed, but the rework window must be balanced against adhesion, cure and reliability requirements.
What information is needed to select an underfill encapsulant?
Provide package dimensions, gap, substrate, dispense process, cure temperature, reliability tests, inspection needs and intended cartridge or syringe equipment.