TLPS

Low temperature soldering, high temperature service

TLPS(Transient Liquid Phase Soldering)

Transient Liquid Phase Soldering (TLPS) preforms utilize a unique composite structure, using the same processes and equipment as conventional soft solder to create lead-free solder joints with a high melting point (>400°C). Their soldering reliability rivals that of silver sintering. TLPS preforms offer low cost and high-temperature resistance, resolving the industry's pain points with high-temperature interconnect materials and are the best choice for leading customers.

Advantages of TLPS preforms:

  1. Lower soldering temperature, minimizing damage to micro-components and reducing thermal stress on hybrid joints;
  2. Offer higher reliability than soft solder and comparable reliability to silver sintering;
  3. Compatible with lead-free soldering;
  4. No flux required;
  5. The solder joint is a high-melting-point intermetallic compound, allowing for a higher service temperature.

Microstructure of TLPS solder joint with full IMC

Shear strength of TLPS solder joints at different temperatures

Comparison of thermal resistance of various solders

Chip soldering for various backside metallization types and die sizes (1)

Chip soldering for various backside metallization types and die sizes (2)

Chip soldering for various backside metallization types and die sizes (3)