Datasheet
Page 1
FRE
Freezer Spray
FRE is a powerful non-corrosive refrigerant for use as a rapid and safe method of cooling small components,
particularly in electrical and electronic equipment. It can also be used for the testing of thermostats and other
thermosensitive components and to detect faulty soldered joints and overheating components.
Cools rapidly down to at least -50°C; extension tube aids access to concealed components
Prevents component damage due to overheating during soldering
Non-flammable; can be used to find faulty solder joints and overheating components
Compatible with most conformal coatings
Approvals NATO Stock Numbers: 6850-99-225-3691 (FRE200D)
1045-99-282-1231 (FRE400D)
Typical Properties
Form Colourless Gas
Density (g/ml) 1.17
Flashpoint (°C) None
Boiling Point (°C) -26.5
Ozone Depleting Potential Zero
GWP (vs. CO
2
, 100yr ITH) 6
Description Packaging Order Code Shelf Life
Freezer Spray 200ml Aerosol FRE200D 48 Months
400ml Aerosol FRE400D 48 Months
Directions for Use
Switch on and set up equipment so that the fault conditions caused by the 'dry' joint exist. Spray each joint in the
circuit with the end of the extension tube approximately one inch from the joint. Spraying should continue until a
layer of 'frost' appears on the joint, usually about 2 seconds. When the 'dry' joint is frozen, the fault condition will
disappear but will return as the temperature of the joint returns to normal ambient. A similar procedure is adopted
for tracing faulty components that are overheating.
An alternative test method is to spray suspected faulty components until a good level of frost has been formed.
The component which “defrosts” the most rapidly is the component which is overheating or faulty. If it is necessary
to cool a component for any length of time, a piece of plastic foam should be wrapped around the component and
then saturated with FRE. If the foam is periodically re-saturated the temperature of the component may be held
below 0°C as long as required.
Fractured copper tracks on PCBs can be located by spraying over the suspect area and the fracture will appear
as the copper tracks contract and part.
Revision 2: Aug 2017