Temptronic ThermoStream TP04100A - Insulation: Minimizing Heat Conductivity; Temperature Extreme Protection

Rev A: 0611 5/98
CQRPORATION
Preparation for Use
TP04100A Interface
& Applications
2-15.4 Temperature Extreme Protection
2-1 5.4.1 Insulation: Minimizing Heat Conductivity
Before the testing of devices is initiated, at either elevated andlor reduced temperatures, the DUT site should
be carefully prepared by inserting insulation materials to minimize undesired paths of heat transfer and to
reduce moisture inflows to the DUT site:
1. Minimize heat transfer by thermal conductivity from the DUT socket site (within the thermal cap)
to the external test equipment to increase efficiency (and reduce moisture infiltration).
2. Protect components on the tester board in the vicinity of the DUT from the temperature extremes of
the ThermoStream air flow.
Utilizing a thermal shroud confines the temperature controlled air within the immediate area around the DUT
and socket (see "Thermal Cap and Thermal Shroud Attachment," Section 0).
Temperature transition times, however, are dependent on mass, specific heat characteristics and the thermal
coupling and thermal conduction paths to the DUT, test socket, test leads, and other fixturing features. To
minimize conductivity, fit and seal insulation materials as given below.
2-15.4.2 Insulation Kits: Fitting and Sealing
Each TP04100A is supplied with a standard insulation kit (P/N ZAK10 1890) which contains a sheet !A inch
thick of 12-inch square silicone foam material.
The silicone material combines the property of low thermal conductivity, and resistance to temperature
extremes, and has the added feature of elasticity. It can be cut to fit snugly around a given component
configuration, thereby forming a seal to minimize heat transfer.
See Figure 2-10 and Figure 2-1 1 for a typical test site installation of the insulation material.
Should more insulation material be required, an optional insulation kit
(P/N SA22450) contains three sheets
(US-, 114, and 112-inch thick) of 18-inch square silicone foam material.
Both of these optional kits come with RTV adhesive. For convenience, pieces and sheets of the silicone foam
may be cemented together with
an RTV adhesive. For separate pieces of available foam material and
adhesive, contact the Temptronic Service Department.
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