Sn10Pb90 Solder Balls: The High-Temperature, High-Reliability Solution
Engineered for extreme environments, Sn10Pb90 solder balls deliver unmatched thermal stability and mechanical strength for the most demanding electronic assemblies. This high-lead alloy is the trusted choice where standard solders fail.
Product Overview
Sn10Pb90 solder balls represent a specialized high-temperature, high-lead alloy solution, composed of 90% Lead (Pb) and 10% Tin (Sn). This unique composition results in a melting point range of approximately 268°C to 302°C, significantly higher than common eutectic solders. They are manufactured as precise spherical solids with a bright, silver appearance, designed specifically for applications where component weight or extreme thermal conditions exceed the capabilities of standard lead-free or Sn63Pb37 alloys.
Their primary function is to provide a robust, non-collapsible interconnection in advanced packaging technologies. Unlike typical solder balls that melt completely during reflow, Sn10Pb90 balls remain solid, acting as a structural pillar to support heavier components. This makes them indispensable for Ceramic Ball Grid Array (CBGA) packages and other area-array components where reliability under thermal and mechanical stress is non-negotiable.
Core Properties & Advantages
The exceptional performance of Sn10Pb90 stems from its fundamental material properties. The high lead content grants superior resistance to thermal fatigue and creep, which are critical failure modes in environments with large temperature swings, such as under-the-hood automotive electronics or high-power industrial systems.
Key Technical Specifications
High-Temperature Integrity
With a melting point above 268°C, Sn10Pb10 balls maintain their structural form during standard reflow processes (typically peaking around 220-245°C). This non-collapsible characteristic prevents components from sinking and ensures consistent stand-off height and joint reliability.
Superior Mechanical Strength
The alloy offers excellent resistance to vibration and mechanical shock. Its strength supports the weight of large, heavy components like ceramic lids or heat spreaders that would cause conventional solder joints to collapse or fail over time.
Proven Long-Term Reliability
Decades of use in military, aerospace, and high-reliability computing have proven Sn10Pb90's performance in harsh conditions. It is a mature, well-understood material with predictable behavior under thermal cycling stress.
Primary Applications
Sn10Pb90 solder balls are not a general-purpose solution but a targeted material for specific, high-demand scenarios. Their use is dictated by application requirements that prioritize long-term reliability over lead-free compliance.
Ceramic Ball Grid Arrays (CBGAs)
The quintessential application. The ceramic substrate's weight and coefficient of thermal expansion (CTE) mismatch with the PCB necessitate a solder ball that won't collapse, ensuring electrical connection and mechanical stability.
Automotive & Industrial Electronics
Used in engine control units (ECUs), power modules, and sensors located near heat sources where operating temperatures can routinely exceed 150°C.
High-Power & RF Modules
Essential in packages for power semiconductors and RF devices where thermal management and structural integrity under power cycling are critical.
Hot Tags: high-pb, China high-pb manufacturers, suppliers, factory, Standard SAC 0 65mm, Sn63Pb37 0 4mm, High-Pb, High Ag SAC, Standard SAC 0 4mm, Sn63Pb37 0 65mm
