Reliability screening of semiconductor devices for quality inspection of electronic products

Date：2022-12-09 14:41:06 Views：867

With the development of electronic technology, the number of electronic components used in equipment is gradually increasing, and the reliability of electronic components is also put forward higher and higher requirements. Electronic components are the basis of electronic equipment and the basic resources to ensure the high reliability of electronic equipment. Their reliability directly affects the full play of the working efficiency of equipment. In order to help you understand, the following contents are organized by the Core Creation Testing Network for your reference.

Definition of reliability screening:

Reliability screening is a series of inspections and tests conducted to select products with certain characteristics or eliminate products with early failure.

Reliability screening purpose:

1： Pick out the products that meet the requirements.

2： Remove products that fail early.

Significance of reliability screening:

The reliability level of a batch of components can be improved because the early failure products are eliminated through screening. Under normal circumstances, the failure rate can be reduced by half to one order of magnitude, and even two orders of magnitude for individual cases.

Reliability screening features:

(1) It is a non-destructive test for products without defects but with good performance, and it should be able to induce failure for products with potential defects.

(2) Reliability screening is 100% testing, not sampling inspection.After screening test, new failure modes and mechanisms shall not be added to batch products.

(3) Reliability screening cannot improve the inherent reliability of products. But it can improve the reliability of batch products.

(4) Reliability screening generally consists of multiple reliability test items.

Classification of reliability screening:

Reliability screening can be divided into conventional screening and special environmental screening.

The products used under general environmental conditions only need to be subject to regular screening, while the products used under special environmental conditions need to be subject to special environmental screening in addition to regular screening.

The selection of actual screening is mainly based on the failure mode and mechanism of the product, different quality levels, reliability requirements or actual use conditions, and process structure.

General screening is classified by screening nature:

① Examination and screening: microscopic examination and screening; Infrared non-destructive screening; PIND； X-ray non-destructive screening.

② Sealing screening: liquid immersion leak detection screening; Helium mass spectrometer leak detection screening; Radioactive tracer leak detection screening; Humidity test screening.

③ Environmental stress screening: vibration, impact, centrifugal acceleration screening; Temperature shock screening.

④ Life screening: high temperature storage screening; Power aging screening.

Screening under special use conditions - secondary screening

The screening of components is divided into "primary screening" and "secondary screening".

The screening conducted by the component manufacturer according to the product specifications (general specifications, detailed specifications) of components before delivery to users is called "one-time screening".

The re screening conducted by the component user according to the use requirements after procurement is called "secondary screening".

The purpose of secondary screening is to select components that meet the user's requirements through inspection or test.

Scope of application (secondary screening)

The component manufacturer has not conducted "primary screening", or the user has no specific understanding of the "primary screening" items and stresses

The component manufacturer has conducted "primary screening", but the "primary screening" items or stresses cannot meet the user's requirements for component quality;

Special screening items that are not specified in the component specification and the component manufacturer does not have screening conditions

Components that need to be verified if the component manufacturer has conducted "primary screening" according to the contract or specification requirements or if the effectiveness of the manufacturer's "primary screening" is in doubt

Screening under special use conditions - secondary screening

The "secondary screening" test items can refer to the primary screening test items and be appropriately tailored.

The principles for determining the sequence of secondary screening items are:

(1) The test items with low cost should be ranked first. Because this can reduce the number of devices for high cost testing, thereby reducing the cost.

(2) The screening items arranged before shall be conducive to the exposure of defects of components in the next screening item.

(3) The sealing test and the final electrical test should be considered carefully. Devices that pass the electrical test may also fail due to electrostatic damage and other reasons after the sealing test. If the electrostatic protection measures during the sealing test are appropriate, the sealing test should be put at the end.

The above is the relevant content of the "reliability screening of electronic products" brought about by the core creation test. I hope it can help you, and we will bring more wonderful content later. The company's testing services cover: testing and verification of electronic components, IC authenticity identification, product design material selection, failure analysis, functional testing, factory incoming material inspection, tape weaving and other test items. Welcome to call Chuangxin Testing, we will serve you wholeheartedly.