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Method for a 3-in-1 multi-step boat design to enable three packaging form factors using the same boat with a test handler

IP.com Disclosure Number: IPCOM000008393D
Publication Date: 2002-Jun-11
Document File: 6 page(s) / 623K

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is a method for a 3-in-1 multi-step boat design to enable three packaging form factors using the same boat with a test handler. Benefits include improved functionality, improved test environment, and improved productivity.

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Method for a 3-in-1 multi-step boat design to enable three packaging form factors using the same boat with a test handler

              Disclosed is a method for a 3-in-1 multi-step boat design to enable three packaging form factors using the same boat with a test handler. Benefits include improved functionality, improved test environment, and improved productivity. 

Background

      The conventional type of test-handler kit design can only support a single package form factor. To use another form factor, a kit must be purchased. With high volume manufacturing driving multiple package form factors in the testing environment, frequent kit conversion or equipment dedication is unavoidable. An average of 6 hours are required for each conversion. Frequent package form-factor conversion or equipment dedication on a single form factor severely limits testing throughput.

General description

              The disclosed method is a test handler kit design that includes three processor-package form factors in one boat design. This solution eliminates the conventional requirement for a dedicated kit per package form factor.

              The key element of the method is a multi-step boat pocket with a 45-degree optimum-chamfering angle to support 3 different package form factors with a single boat.

Advantages

              The technical advantages of the disclosed method include:

·        Eliminate the test-handler kit conversion to run one different package form-factor

·        Eliminate and avoid machine dedication per package form-factor

·        Save approximately 5.7 hours conversion time per kit

Detailed description

              The disclosed method includes an adapter kit to support three processor package form factors in one tester boat (see Figure 1). As product under test travels through the test cell, the tester and the handler work together. The tester runs test programs. The handler is an accompanying material-handling system designed to move the device under test (DUT) between the test site (socket) and the material handling/transport media (such as trays).

                    Based on the test-pocket design rule, the tangent Xº is less than or equal to 1 where the device is able to self-align when a drop occurs from pick-and-place picker of the test handler.   

                    The chamfering angle design is at 45º to support the 0.166 maximum pocket depth required on the pick-and-place picker. If the chamfering angle < 45º, the multi-step pocket depth is >0.166, which is outside the maximum pocket-depth requirement.

      The following steps outline the class test operation (s...