Prodotti Prodotti per la gestione termica

FlowMetal™ Nano silver paste for sintering

Nano silver paste for die attach process which can be bonded at low temperatures

Typical bonding materials like solder, re-melts when exposed to high temperature.

Thus, typical solder is unusable for power semiconductors such as SiC and GaN which are used in high temperature environment.
FlowMetal™ nano silver paste is designed as a new bonding material to solve the problem.

Although the sintered body of silver nanoparticles is dense with small number of pores in the structure, it retains low electrical resistance and high thermal conductivity almost as the same as silver.

FlowMetal™ Nano silver paste for sintering

Caratteristiche

・A bonding material designed using our exclusive silver nanoparticles.
FlowMetal™ nano silver paste is manufactured using silver nanoparticles synthesized by our company.
Specifications with higher silver particle concentration (85-97wt%) are available.
The product is lead-free.

・Low bonding temperature with excellent heat resistance, electrical conductivity, thermal conductivity.
Production technology of low-temperature sintering type silver nanoparticle enables sinter bonding of the nano silver paste at low temperatures.
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℃).

・Pressure-less sintering
 In spite of being pressure-less, the low-temperature sintering process provides high bonding strength through diffusion reactions between the nanoparticles and the substrate metal.
Pressure-free sintering may not be suitable depending on the conditions. There is also specifications for sintering with pressure.

Metodo di stampa

Dispenser, metal mask (stencil) printing, or pin transfer process are available.

Applicable Surfaces

Oro, Argento, Rame

Product Specifications

Modello SR9200

Numero di modello: SR9870

(Under development)

Numero di modello: SR9950

Caratteristiche

Bassa temperatura di sinterizzazione.

Pressure-less sintering to bare Cu surface

Bassa temperatura di sinterizzazione.

Medium die size

Applicazioni LED, LED UV, LD

Power semiconductor (Si、SiC)

Power semiconductor (Si、SiC)

Piccole fustelle

(~1,5 mm × 1,5 mm)

Grandi stampi

(~10mm×10mm)

Medium Dies

(~5mm×5mm)

Applicable Surface Ag, Au Ag, Au, Cu Ag, Au

Processi

Conditions

Metodo di stampa

Distributore

Pin transfer process

Stampa di maschere metalliche Distributore

Sinterizzazione

Atmosphere

Aria

Nitrogen or Air

Aria

Sinterizzazione

Temperature (ºC)

150 275 200

Sintering Time

(minuto)

120 30 60
Sintering Pressure Pressure-less Pressure-less Pressure-less

Proprietà

Dopo

Sinterizzazione

Shear Strength

(MPa)

>70

(1 mm × 1 mm)

>90

(2,5 mm × 2,5 mm)

>120

(3mm×3mm)

Termico

Conductivity

(W/mK)

140 300 215

Electric Resistivity

(μΩcm)

5 2 3

I valori nella tabella sono valori rappresentativi. Le specifiche sono soggette a modifica senza preavviso.

Applicazioni

Esempio di stampa su un dado semiconduttore

Sito speciale "Gestione termica" di Bando Chemical

"Gestione termica" di Bando Chemical
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