Five Shocking Facts About Hast Test Chamber.

HAST (Highly hast test chamber ) chambers minimize the time it takes to complete humidity testing for semiconductors. By raising temperature levels above 100 ° C and increasing the pressure, simulation of regular humidity tests can be made while preserving the exact same failure systems.

Automatic humidity filling up & door lock systems
A round work space, permitting wider example boards to be filled
Convenient, hermetic power-pin system for predisposition testing
We currently offer an “Air HAST” modification for faster testing of lead-free solder hair resistance to humidity.
Internal cyndrical tube as well as door guard protect samplings from dew condensation
Interior is round for maximum item loading
Two stainless steel shelves
Set of casters for simple activity of the chamber (except double devices).

What is a HAST test?

Today, normal humidity testing can take hundreds of hrs to get appreciable results. The quality of Integrated Circuits (ICs) is such that they are not vulnerable to failing throughout humidity tests. Failings are triggered by moisture vapor permeating the packaging of the actual silicon circuit. In order to accelerate the penetration of moisture, Highly accelerated cardiovascular test approach was founded.

HAST (Highly hast test chambers) chambers Safety and security Features:.
Overheat & over-pressure protectors.
Door lock safety system to stop opening of the door while the chamber is pressurized.
Specimen power control incurable: shuts down the product power in case of an alarm system.

HAST Testing Standards:.

Allthough, time is not the only distinction in between the two tests: as an example, the THB testing holds a 85 ° C/85 %R.h. condition, as the samples go through Prejudice lots. Nonetheless this has come to be less appropriate today, as a result of the brand-new modern technology made use of for product packaging as well as passivation materials.

If components are tested with power on, in a lot of cases the test is performed with 85% RH. These environmental parameters supply an accelerated method of component reliability testing, that promptly discovers faults as well as problems that could emerge throughout long-term use.

There are several standards for HAST tests chamber from the IEC, JESD, JIS and JEITA, all suggesting various mixes of temperature and RH, and are made use of for various situations. One of the most common are:.
IEC 60068-2-66 – Used for hermetically secured small electronic parts.
IEC 60749-4 – Utilized generally for semiconductors.
JESD020C– Reflow soldering.
JESD22-A104D– Temperature Cycling testing to cover component and also solder interconnection testing.
JESD22-B102E– Tests for accelerated wetness resistance, unbiased autoclave.
JESD22-A108B– High Temperature Operating Life (HTOL) test.
UTILIZED JESD22-A102C.– Used for accelerated humidity resistance testing of non-hermetically secured semiconductor-based gadgets.
UTILIZED JESD22-A110C.– Made use of for non-hermetically secured semiconductor-based devices, while powered, to examine reliability.
JESD22-A118– Evaluates the reliability of unpowered non-hermetically secured semiconductor-based tools.
JIS C60068-2-66– For testing small electronic parts.
JEITA ED-4701/ 100 103 Method– Tests the toughness of semiconductors that are stored or utilized within high temperature as well as humidity-based atmospheres.

Benefits of Wewon’s HAST (Highly Accelerated Cardiovascular test) chambers:.

One of the most vital elements of HAST testing is the cool-down process. If the chamber is cooled to quickly, or pressure is released too soon, there is a risk of condensation or pressure shock on the examples, destroying the test.

Common decreases of test time to 1/50th of a common humidity test are typical. By using HALT (Highly Accelerated Life Test) techniques of fast temperature cycling and also arbitrary vibration, they hope to intensify mistakes in components so that when they do a HAST test chamber, the humidity can penetrate much better.

hast test chamber

The highly hast test chamber has been primarily created to perform prejudice testing which uses constant voltage and also signals.

A HAST chamber is utilized to execute highly hast test chamber, or HAST, in test applications that call for extreme pressure as well as temperature levels over 100 ° C. Highly hast chamber chambers permit drivers to complete humidity resistance testing in days instead of weeks, an important function for test engineers measuring the environmental resistance of semiconductors as well as other electronic components. Leading HAST chamber producers like Espec use chambers with attributes like automated humidity filing, automated door locks, a streamlined hermetic power-pin system for prejudice tests.

What is Hast Testing?

As the need for electronic elements, specifically semiconductors, continues to proliferate, among the difficulties that industry faces, is working with the moment required to test those parts.

Commonly, Temperature Humidity-Bias testing (THB) has been the remedy. It is an extremely valid one, but taking 1000 hours to be completed, it stands for today a substantial delay for modern commercial processes.

This is where HAST testing, Highly Accelerated Temperature and also Humidity Stress Test, offers substantial benefits.

Taking between 96 and 100 hrs per test, and also sometimes even less, the HAST test chamber provides considerable time saving, that can have a wonderful influence on any type of service.

Therefore, the test has quickly end up being one of the most dominant of the endurance test techniques for semiconductor gadgets. While primarily connected with semiconductor testing, HAST testing is utilized on a variety of both hermetically secured as well as unsealed compact electronic elements, to give fast testing results for numerous circumstances as well as needs.

How to Perform HAST Test chamber with a Climatic Chamber.

The highly hast test chamber, likewise known as HAST, is carried out with details testing chambers, created to fulfill all needs from the test. As pointed out over, these chambers are suggested to change existing THB test chambers, which utilize wet/dry light bulb systems to manage humidity. The HAST chamber, that takes care of temperature and also humidity, is crucial to providing faster cause all problems.

HAST testing is particularly valuable during product changes where changes could possibly accelerate metal corrosion, with outcomes being obtainable way much faster than with other remedies, having then substantial influence on development times. The HAST test chamber is the very best choice for testing any type of type of wetness driven corrosion.

It additionally supplies total test results of all components based on degeneration, of general performance, consisting of performance of secured plastic components in a range of conditions, consisting of a vibration test. The HAST strategy provides the genuine effect test, which provides an introduction of product efficiencies.


With its adaptability supplying a range of test leads to a short time, HAST testing is crucial for the modern industrial production cycle. The HAST testing process enables both saturated as well as unsaturated testing of parts within the test cycle, for plastic sealed components or for others made to be ecologically secured.

Whatever testing standards are used, the capacity to have actually tests completed in days, rather than months, produces new opportunities for product growth. By securing testing processes, firms are able to supply faster responses to always changing production demands, thus boosting efficiencies and also customer fulfillment.

HAST (Highly hast test chambers) lower the time it takes to finish humidity testing for semiconductors. If elements are evaluated with power on, in most instances the test is performed with 85% RH. Normal decreases of test time to 1/50th of a standard humidity test are normal. By making use of STOP (Highly Accelerated Life Test) methods of fast temperature cycling and random vibration, they really hope to intensify faults in components so that when they do a HAST test, the humidity can permeate far better.

The highly hast test chamber, likewise understood as HAST, is carried out with certain testing chambers, created to satisfy all demands from the test.