Atec Espec-ESX Series - Manual (Page 18)

Fast temperature changes find latent defects in electronics
Dense loading using standardized fixtures
Environmental Stress Screening (ESS) validates product quality by subjecting products to the
stress of repeated rapid thermal changes. Typical screening profiles include thermal cycling
of 5 to 20
°
C per minute over a 100
°
C span (e.g. 85 to -20
°
C). ESS chambers allow for dense
loading of products such as PC boards and provide excellent stress on each unit.
Our ESS85 models have set the industry standard for performance, throughput, and flexibility.
This cart-based system allows faster loading/unloading and inexpensive changeover to new
products. The high-volume, horizontal airflow provides maximum product change rates.
These models are commonly found at major electronic contract manufacturers.
ESPEC offers smaller systems for applications such as pre-qualification, troubleshooting,
and small-scale ESS programs. These models accommodate the same fixturing trays from
our standard ESS systems.
• Less products per pass of air, for better product uniformity
• Programmable control for product-change or
air-change available
• Automatic coupling of product power speeds loading
• Liquid nitrogen cooling is available for even
faster change rates
• Custom systems to meet exact needs are also possible
ESS85 (9'w x 5'd x 8.5'h exterior plus refrigeration)
Environmental Stress Screening
Custom model for ESS
of telecom rack systems
Interior Dimensions
Model Interior Volume WxDxH Typical Loading
ESS5 140 L (5 cu. ft.) 56x68x38 cm (22x27x15 in) 10 kg (25 lb.)
ESS11 310 L (11 cu. ft.) 56x68x76 cm (22x27x30 in) 40 kg (90 lb.)
ESS22 620 L (22 cu. ft.) 61x81x122 cm (24x32x48 in) 90 kg (200 lb.)
ESS35 990 L (35 cu. ft.) 61x132x122 cm (24x52x48 in) 180 kg (400 lb.)
ESS85 2400 L (85 cu. ft.) 122x127x152 cm (48x50x60 in) 220 kg (500 lb.)
Typical change rates of 5 to 20 ° C/min. depend on the cooling and heating sub-systems selected,
as well as the specific product and fixturing. Contact ESPEC to discuss options for your load
and desired performance.
• Catalog available
17 Go ESPEC: www.espec.com