Theses›Automotive & mobility›Sintered silver die attach

Sintered silver die attach

Sintered-metal die-attach: power-electronics workhorse, and the AI-migration question

  • Bear
  • Shut
  • $362M by 2035

The callSintered silver is the qualified bond in power modules and probably never reaches AI chips; the market is small and the chemistry houses hold it.

D1D2R1R2R3C1foragainst D1D2R1R2R3C1foragainst
Fig. 1The balance. Drivers and catalysts against restraints, each block sized by its weight; catalysts hang dashed because they have not happened yet, sized by their odds. It tips toward the restraints.
  1. D1AI accelerators pass 1kW and HBM stacks get taller, so the bond between die and package becomes a place heat gets stuck, and sinter conducts far better than solder.
  2. D2Silicon carbide and gallium nitride power modules for EV inverters and fast chargers grow, and they already use sinter.
  3. R1Sinter is in none of the AI or HBM bonding paths: accelerators use solder bumps and copper pillars, HBM uses films moving to hybrid bonding, nobody has qualified it.
  4. R2Rising power-module demand helps the chemistry houses that already own the paste and the customer qualifications, and qualification cycles take years.
  5. R3A new entrant's slice is about $6M today, and only one non-incumbent chemistry exists, Elephantech in Japan.
  6. C1The EU RoHS exemption for high-lead solder die attach expires, forcing a move to sintered paste in the modules it covers.Dec 2027
Rests onthe beliefs underneath
Supported by · confidence
What would prove itdated tests, open and resolved
202720282029today1234predictionswatch 202720282029today1234predictionswatch
Fig. 2Each ring is a dated test: dashed while open, struck through when overdue, ticked or crossed once resolved.
  1. 1No AI-accelerator or HBM package is publicly disclosed with sintered silver or copper die-attach between 6 Nov 2026 and 31 Jan 2027.Jan 2027 · open
  2. 2Sintered-metal (Ag or Cu) die-attach is qualified into at least one high-TDP AI accelerator or HBM-stack package by end-2028.Dec 2028 · open
  3. 3Sintered metal qualified into at least one shipping AI accelerator above 1kW or an HBM stack.Dec 2028 · open
  4. 4A packaging house offers sinter as a standard package option, which would change the call.Dec 2028 · open
Expressionslisted, private, technologies
Private · 4 private companies, 2 of them in China; none in continental Europe.

Elephantech · Indium Corporation · Shenzhen Xinyuan New Materials · QLsemi (Beijing Qinglian Technology)

1 more private company tracked, not shown

Technologies
Who has already bet on itprivate rounds, from public sources

raised by 2 companies. Wave building: Money is arriving: recent rounds and tier-1 funds are in, but no runaway leader yet.

Backed by a top-tier venture firm: QLsemi (Beijing Qinglian Technology). Backed by a strategic investor: Shenzhen Xinyuan New Materials, QLsemi (Beijing Qinglian Technology).

Reading
Show the reading