Microprocessor Programmable Constant Rapid Change Temperature
Cyclic Test Chamber
Rapid change temperature testing specifies a test sample temperature variation rate of 15°C/minute
or less, which is the biggest difference between this method and
thermal shock testing. Since rapid change temperature testing
achieves highly repeatable test results, it is used for compliance
testing for standards such as JEDEC (JESD 22-A104B).
Rapid change temperature testing is a type of thermal cycling tests
developed to improve the failure repeatability of thermal shock
tests.
With the ongoing rise in issues affecting the reliability of
electronic devices and circuit boards, a better-suited evaluation
testing method is needed to respond to issues such as higher device
operation temperatures resulting from greater semiconductor
integration, changes in device mounting methods such as BGA and
CSP, and the use of lead-free solder.
Choose a Correct Chamber Dimension:
Choosing a correct chamber size depends on the application and your
available floor space. The suggested ratio is about 1:3 between
product volume and the working volume of the chamber.
⅓ product to ⅔ empty space around the product ensures adequate
airflow to the test sample and makes sure your test is conducted
properly. Items that allow for airflow (such as a computer chassis
with plenty of air vents) can take up a larger percentage of the
test volume.
Features:
1, Available internal chamber volumes: 150L, 225L, 416L, 800L and
1000L;
2, To preset different heating and cooling rate: 5℃/min, 10℃/min,
15℃/min;
3, Support rapid change temperature test, condensation test, high
temperature/humidity test, temperature/humidity loop test, etc.
4, Complete real time curve display;
5, Conform but not limited standards: MIL-STD-2164, MIL-344A-4-16,
GJB-1032-90, GJB/Z34-5.1.6, etc.
Technical Specifications:
| Model | Temp Range | Internal Dimension(mm) | Exterior Dimension (mm) |
| QTH-150KB | -20℃～﹢150℃ | 500 x 600 x 500 | 800 x 1450 x 1120 |
| QTH-225KB | 500 x 750 x 600 | 800 x 1620 x 1320 |
| QTH-416KB | 700 x 850 x 700 | 980 x 1860 x 1600 |
| QTH-800KB | 1000 x 1000 x 800 | 1350 x 1980 x 1700 |
| QTH-1000KB | 1000 x 1000 x 1000 | 1350 x 1980 x 1800 |
| QTH-150KC | -40℃～﹢150℃ | 500 x 600 x 500 | 800 x 1450 x 1120 |
| QTH-225KC | 500 x 750 x 600 | 800 x 1620 x 1320 |
| QTH-416KC | 700 x 850 x 700 | 980 x 1860 x 1600 |
| QTH-800KC | 1000 x 1000 x 800 | 1350 x 1980 x 1700 |
| QTH-1000KC | 1000 x 1000 x 1000 | 1350 x 1980 x 1800 |
| QTH-150KD | -70℃～﹢150℃ | 500 x 600 x 500 | 800 x 1450 x 1120 |
| QTH-225KD | 500 x 750 x 600 | 800 x 1620 x 1320 |
| QTH-416KD | 700 x 850 x 700 | 980 x 1860 x 1600 |
| QTH-800KD | 1000 x 1000 x 800 | 1350 x 1980 x 1700 |
| QTH-1000KD | 1000 x 1000 x 1000 | 1350 x 1980 x 1800 |
| Temperature fluctuation | ±0.5℃ |
| Temperature uniformity | ±2.0℃ |
| Heating/Cooling Rate | 3℃/min, 5℃/min, 10℃/min, 15℃/min, 20℃/min (optional) |
| Temperature slope | Linearity or Average |
| Control system | Large LCD touch screen controller, data can be displayed directly |
| Inner materials | SUS#304 Stainless steel |
| Outer materials | Cold rolled steel sheet powder baking paint |
| Insulation material | Rigid polyurethane foam |
| Cooling mode | 1, Cooling system (No consumables, suitable for long-term high
frequency test) 2, Liquid nitrogen assist in cooling (Liquid nitrogen is a material
used for short and low frequency test) |
| Safety devices | Electric leakage protection , Short circuit protection, Overheat
protection ,Water shortage protection , Dry burn protection switch
alarm device |
| Power Supply | AC220/380V, 50/60HZ, |
| Note | 1, The performance values are no specimen inside the test area.
2, At 20ºC ambient temperature, relative humidity 65%RH, rated
voltage |
