Multitest Atlas Contactor Brings Advanced Electrical and Mechanical Performance to WLCSP Testing

Atlas 0.3 mm pitch spring probe for reduced cost of test

Multitest’s Atlas contactor with 0.3 mm pitch responds to challenging requirements in WLCSP testing. The Atlas 030 high performance WLCSP test contactors are designed to meet the electrical requirements of today’s testing environment, without sacrificing mechanical performance. Long probe life, combined with improved first pass yields and easy WLCSP probe replacement in test fixtures and probe heads, significantly contributes to a lower cost of test.

The Atlas 030 contact profile is critically important to achieving high bandwidth, low contact resistance, long life and high reliability. The Atlas 030 offers a shorter electrical path, lower capacitance and inductance, and increased tip rigidity with a much greater immunity to breakage than traditional WLCSP probes used in earlier-generation test sockets. The Atlas 030 has 0.310 mm of compliance for bump structures that requires a larger compliance window for reliable contacting in high parallel test applications.

The Atlas 030 contactors are designed to meet standard sizes and footprints. This makes Atlas 030 an efficient and easy to install solution for replacing other WLCSP test sockets in a variety of applications. Atlas 030 supports both manual and automated contacting of WLCSPs. The Atlas 030 combines Multitest’s proprietary precision manufacturing process for producing smooth sub-micron features with an innovative cruciform tip design for optimum electrical and mechanical performance.

Bert Brost, Product Managers, explains: “Spring probes are emerging as the wafer-level chip scale package (WLCSP) contacting technology of choice. Spring probe WLCSP contactors and probe heads provide high bandwidth, low and repeatable contact resistance, with increased compliance and are easily maintained by our customers. The Atlas 030 is our response to the need of our customers for improving mechanical and electrical performance in WLCSP testing without increasing the cost of the interface.”

To learn more about the Multitest Atlas contactor visit http://multitest.com/atlas