Atec Espec-ESX Series - Manual (Page 20)

HAST
Highly Accelerated Stress Test chambers
reduce humidity test times
Reduce test time by a factor of 50!
One of the most common tests for IC chips, 85
°
C/85%, has become
less useful in recent years due to increased packaging quality.
Today, reliability tests can run thousands of hours in order to get
useful results.
The Highly Accelerated Stress Test (HAST) was devised to decrease the
test time needed to get useful results. This test uses high temperature
(over 100
°
C) with high humidity and high pressure conditions. It has
also become known as the Autoclave or Pressure Cooker test. By using
extreme conditions, old test requirements can be accelerated by a
factor of 50 or more.
Each system includes specimen power terminals that allow easy wiring
to test samples despite the pressurized chamber design. Ten programs
can be stored in memory, allowing full control of the test profile,
especially the critical cool-down phase.
These systems are capable of two different operation modes: saturated
humidity and unsaturated humidity. With our M-instrumentation
option, you can control humidity via a wet-bulb sensor, eliminating the
risk of condensation on samples over the entire test, in full compliance
with published industry standards.
Systems with two bays allow twice as much testing with the
same footprint.
Nominal Interior Temperature, Humidity,
Model Interior Volume WxDxH and Pressure Range
EHS-211 18 L 25x32x25 cm
(0.64 cu. ft.) (10x12.5x10 in)
EHS-211D 18 L each 25x32x25 cm each
Two bays (0.64 cu. ft.) (10x12.5x10 in)
EHS-221 46 L 35x43x35 cm
(1.62 cu. ft.) (14x16.8x14 in)
EHS-221D 46 L each 35x43x35 cm each
Two bays (1.62 cu. ft.) (14x16.8x14 in)
EHS-411 18 L 25x32x25 cm
(0.64 cu. ft.) (10x12.5x10 in)
EHS-411D 18 L each 25x32x25 cm each
Two bays (0.64 cu. ft.) (10x12.5x10 in)
TPC-432ZM 130 L 55x55 cm (22x22 in)
(4.6 cu. ft.) diameter x depth
• See our website for articles and links on HAST testing
• Catalog available
Temperature:
105 to 162 ° C
(221 to 324
°
F)
Humidity:
75 to 100%RH
Pressure:
0.2 to 2.0 kg/cm 2 G
(0.19 to 1.94 atm)
Temperature:
105 to 143
°
C
(221 to 289
°
F)
Humidity:
75 to 100%RH
Pressure:
0.2 to 4.0 kg/cm 2 G
(0.19 to 3.87 atm)
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