Silver Nanoparticle Bonding Material Paste – FlowMetal™ for Die Attach
A silver paste for die-attach bonding which can be bonded at low temperatures by applying the technology of low-temperature sintering type silver nanoparticle ink.
APPLICATION
Dies bonding, dies touch applications
- A bonding material using our unique silver nanoparticles
We manufacture silver paste for bonding materials using silver nanoparticles synthesized by our company.
Higher silver particle concentration (85-97wt%) is possible.
Lead-free. - Low bonding temperature and excellent heat resistance, electrical conductivity, thermal conductivity.
By applying the low temperature sintering technology of low temperature sinterable silver nanoparticle ink, sinter bonding at low temperature is possible.It is known that silver nanoparticles sinter at low temperature due to the size effect, and the melting point of the sintered silver is similar to that of bulk silver (962℃).Typical bonding material, like solder melts again when exposed to high operating temperature. Those power semiconductors (SiC, GaN, etc.) which need to be used at high operating temperature cannot adopt ordinary solder.Silver nano paste using silver nanoparticles is a new bonding material that solves the above problems.
Although the sintered body of silver nanoparticles is dense, it contains a small number of holes, so it is inferior to the intrinsic value of silver, but shows low electrical resistance, high thermal conductivity, and high bonding strength*.
- Bonding without pressure
Non-pressure bonding may not be suitable depending on the surface treatment and bonding conditions of the electrodes.Depending on the bonding conditions, pressureless bonding may not be suitable. There is also a lineup that enables pressure welding.
■ Surface Required*
Gold, silver, copper
■ Printing Method
Capable of dispenser, metal mask (stencil) printing, and pin transfer.
■ Application Fields/Uses
Dies bonding, dies touch application.
It is useful for bonding high frequency devices (RF) that operate at high temperatures, bonding in power semiconductor chips, light emitting diodes (LEDs), dies in semiconductor lasers (LDs), submounts, and packages.
