When developing a burn-in test strategy, engineers always ask the following two questions: "What do you want?" Sources: 1
While combustion - in the test - can be an advantage when checking for defective products, costs can increase depending on the complexity of the device and the required burning time. You may be wondering what the difference is between conventional electrical tests and Accelerated Burn-In Test (ATE). Conventional electrical tests use expensive automated testing equipment (ATEs), while conventional combustion requires a combustion chamber that retains its own combustion surface by radiating large amounts of heat. While combustion testing can be very beneficial for checking defective products, it introduces a new type of failure and, if desired, high voltage conditions can be used to ensure that an early failure occurs if it does.
Various approaches to combustion have been developed - in a test with flip-on-the-chip technology. The aim is to provide an improved reusable test carrier for integrated circuit modules (ICs). The structure and methods disclosed in tests during combustion can also be used to provide a more efficient and cost-effective method of testing integrated circuits, as wired IC chips are able to process a wide range of shape sizes. Burn - In tests, it can be done on wafers or cubes on a reusable carrier or even on the surface of an integrated circuit module.
A low-temperature reflow (S15) removes the known good cubes from the reusable test carrier after they have been identified as burned - in the test. If the cubes fail the combustion test, they can be removed and disposed of accordingly by a low temperature flow of S 15. A low temperature causes the S11 and S12 to return and remove them from a reusable test carrier. Sources: 6
The burn-in test enables the manufacturer to detect and remove potentially defective devices before use and, if necessary, safely dispose of them.
The goal is to provide a more accurate and reliable assessment of the performance of an integrated circuit (IC). Burn - testing methods often test end products, but also use them as one of several reliability assessments - is based on assessments that can help improve manufacturing standards. Probes can be used, for example, to test a new semiconductor in a laboratory, as well as for packaging and packaging equipment. To ensure that equipment and systems leave the production site and meet the designed operational requirements, combustion tests are carried out in the laboratory.
The test vector is applied to the device and monitored while the system is being burned and is under combustion stress. This data can be used to calculate the percentage of the population that survives the incineration - in the test as well as the number of devices in the sample.
An incineration system can have a device that operates at an increased voltage and temperature and triggers a short-term mechanism of voltage / temperature failure. Sometimes the error model is used: The temperature increases when the pins of the test IC are switched off. In a known method, also known as the Adumba flame test, temperatures rise or fall when the pen is embedded in a biased manner (do not turn off). The temperature also rises or falls in response to other factors such as pressure, temperature, pressure or temperature change.
According to the present invention, the combustion of the wafer level in tests can begin by detecting the presence or absence of a small amount of heat on the surface of the test IC. Typically, data on temperature, pressure, temperature change, voltage and temperature changes and other factors can be collected.
Burn-in is a temperature bias reliability test used to detect and verify possible errors in early life. Burn in Test is a system that detects the presence or absence of heat on the surface of the test IC, increasing the reliability of the semiconductor component.
According to the present invention, the method involves recording the non-volatile elements of the chip matrix in the test for the duration of the wafer - level burn. Burn-in tests can be used to determine the reliability of the component at critical early stages and to ensure that the circuit does not move too fast or too slowly during its early life. The burn-in process is an important factor, as the elements to be tested are continuously checked for failure in a predefined time sequence.
This is particularly necessary for combustion methods - in tests that can eliminate the probing wafers from the process. First, burn-in is a type of stress test, testing semiconductor components to detect early component failure in the early stages of their life cycle. It is similar to stress tests, but is applied to the product before production to detect any manufacturing defects that lead to early failure.
After the DC test, in which the defective units are sorted and removed, the finished chip undergoes a series of tests to identify potentially defective chips. The burn-in test is performed by using a laser diode firing system to operate the components over a longer period of time to identify problems. In the present procedure, a ball - the reflow (or re-annealing) of the chip - is moved until after the combustion test.