QFN test socket Celsius

elastomeric contact

Overview
Celsius test sockets feature a wiping contact technology ideal for QFN testing. The elastomer is utilized for load-board compliance only and allows the contact to be cycled in temperature extremes with no change in contact force or reliability. Proprietary contact design provides wiping action at the device pad to ensure consistent contact resistance with minimal scrub action to the PCB pad.

Features & Benefits
Smiths Interconnect's Celsius contact takes advantage of a slightly longer signal path to offer significant advantages in compliance, temperature handling, and current carrying capacity. A self-contained contact, Celsius uses an elastomer only for compliance to the load board and is not repeatedly cycled, enabling use at much higher and lower temperatures with no change in contact force or reliability. Celsius also provides spring probe–like compliance, which can be an advantage in multi-site applications where nest-to-nest discoplanarity causes yield disparities between sites.

• Wiping contact technology to ensure consistent contact resistance
• Elastomer used for load-board compliance only (not repeatedly cycled)
• Operates reliably across extreme temperatures
• Spring probe-like compliance for improved multi-site yield
• Minimal scrub to PCB pad
• Suitable for QFN testing

Applications

• QFN device testing
• Multi-site strip and peripheral test handlers
• High/low temperature functional and reliability testing (-50 to 170 °C environments)

Technical specifications

• Model / Series: Celsius Series
• Contact type: proprietary wiping contact design (self-contained contact)
• Load compliance: elastomer used for load-board compliance only
• Current carrying capacity: 5 A continuous
• Operational temperature range: capable of -50 °C to 170 °C test environment
• Performance: consistent contact resistance through thermal cycling
• Mechanical: minimal scrub action to PCB pad
• Advantages: longer signal path for better compliance, temperature handling and current capacity; spring probe–like compliance for multi-site applications