Stabilant 22 Contact Enhancer Application Notes from R.A.L. Audio
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Stabilant 22 Contact Enhancer Application Notes

App. Note 37 - Eliminating Environmentally Unsafe Solvents

What are the Stabilants?

The Stabilants are used on contacts to provide a resident, long-life, contact-enhancement treatment which does not involve the use of any CFC's, or any other ozone depleting solvents. Classed as "Z-axis conductors", they conduct by quantum-tunneling effects when used in thin films on electromechanical contacts. This generally results in the reliability of a soldered joint without formation of a physical bond. Because they themselves are environmentally safe, and are a one-application, resident treatment, a small amount can replace many, many times their volume of cleaning solvents with a consequent major improvement in a manufacturer's environmental burden.

Stabilant 22 itself is not an ODC (Ozone Depleting Chemical as are CFC's, and to lesser degree, HCFC's), nor are any ODC's used in the manufacture of Stabilant. We do not supply Stabilants diluted by or propelled using any CFC's or HCFC's an they are not available in pressurized spray cans.

What is their life expectancy?

Having a very low vapor pressure and a resistance to cross-linking effects caused b the presence of curing agents or accelerants in both elastomers and thermoset plastics used in electronics, the Stabilants will generally last longer than the design life of the electronic equipment on which they are used.

How safe are they?

The concentrate, Stabilant 22, is considered as non-toxic; the isopropanol-dilute form, Stabilant 22A, has a very low toxicity. This also applies to Stabilant 22E, which is diluted with ethanol In the quantities used in electronic manufacture and/or servicing within a room having normal ventilation it is extremely doubtful that even an minor-irritant concentration of the isopropanol could b reached unless very large quantities of the material were spilled. As it is usually applied from a 5 mL, 15mL or 50 mL dropper bottle, the amount of alcohol available for vaporization is so small as to be a non-hazard.

What other desirable attributes do the Stabilants possess?

They have excellent lubricating properties making them ideal for use in such applications as switches, potentiometers, slip-rings, and tunable-microwave-cavities. The Stabilants, when applied, retain an ability to lift both corrosion by-products as we as contaminant materials off the metal contact surfaces. Thus they make low-level electronic connectors much less susceptible to thin-film rectification effects and can significantly cut RF demodulation in poorly shielded contacts.

Because of their broad temperature tolerance (from -70° C to +220° C) they have found wide application in electronic equipment used in severe temperature environments.

What has been their history of use?

The Stabilants were developed in 1977 and went several years of experimental use before being adopted by the Canadian Armed Forces in 1983 after which they were issued with a NATO reference. They were also introduced into the non-military market in 1983, and were initially employed in consumer-electronics. After several successful years in the consumer field they were used in biomedical electronics and commercial computing applications, and are now employed in electronic equipment ranging from Air-traffic Control applications to Agricultural Machinery.

Is their apparent cost justified in actual use?

Yes, many times we have been told of how a small amount of Stabilant has saved a customer thousands of dollars. Because they only have to be used once, they provide a long-term limit on the degradation of an electronic contact that is far-more reliable and much less expensive than that provided by repeated disconnection and cleaning. And because they do not short out between adjacent contacts, they can be used without regards for wetting-down of the connector's insulation. Stabilant 22 does not affect plastics used in electronics.

Because Stabilants are very simple to use in the field, the bulk of connector-related problems can be cured in-situ, and this ability has significantly reduced the "board-float" needed to keep systems functioning.

In numerous instances, Stabilants have been able to restore electronic equipment/systems, which were considered unserviceable, to many additional years of useful life.

Revision 11


Stabilants are a product of Dayton Wright research & development and are made in Canada

NSCM/Cage Code - NATO Supply Code 38948

15 mL of S22A has NATO Part # 5999-21-900-6937


The Stabilants are patented in Canada - 1987; US Patent number 4696832. World-wide patents pending. Because the patents cover contacts treated with the material, a Point-of-sale License is granted with each sale of the material.

MATERIAL SAFETY DATA SHEETS ARE AVAILABLE ON REQUEST


Stabilant, Stabilant 22, and product type variations thereof are Trade Marks of D.W. Electrochemicals Ltd.

Copyright 2003 - D.W. Electrochemicals Ltd. This note may be reproduced or copied, provided its content is not altered. The term "contact enhancer", 1983 Wright Electroacoustics.


NOTICE: This Application Note is based on customer-supplied information, and D.W. Electrochemicals is publishing it for information purposes only. In the event of a conflict between the instructions supplied by the manufacturer of the equipment on which the Stabilant material was used, and the service procedure employed by our customer, we recommend that the manufacturer be contacted to make sure that warranties will not be voided by the procedures.

While to our knowledge the information is accurate, prospective users of the material should determine the suitability of the Stabilant materials for their application by running their own tests. Neither D.W. Electrochemicals Ltd., their distributors, or their dealers assume any responsibility or liability for damages to equipment and/or any consequent damages, howsoever caused, based on the use of this information.

Stabilant, Stabilant 22, and product type variations thereof are Trade Marks of D.W Electrochemicals Ltd.

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Stabilant
Stabilant 22 Contact Enhancer

Stabilant 22 Contact Enhancer

We carry the complete line of Stabilant products. Looking for something not listed here? Please contact us.
Stabilant 22
APPLICATION NOTES
1. Electronic Equipment
2. Computer cards
3. Schadow switches
4. Mic connectors
5. RTS & Dual plug patch bays
6. Biomedical Electronics
7. Computing & Peripherals
8. Cable TV
9. Robotics
10. Environmental Impact
11. Recording studios
12. Broadcast equipment
13. Mobile Radio
14. Educational computing
15. Stereo systems
16. Aid to IC insertion
17. Navigational equipment
18. Card edge conn. problems
19. Complex process control
20. Automotive service
21. Gold plating/solder alloy
22. Very high humidity
23. High current thermal runaway
24. Car stereo systems
25. Plastic element pots.
26. Farm machinery & trucks
27. Model & hobby
28. RF case seals
29. Outdoor environments
30. Computer crashes
31. Relays & switches
32. Silicone problems
33. Tin-plated contacts
34. Solder flux & resin residue
35. Post application color tinting
36. Aircraft connectors w/ flurosilicones
37. Avoiding unsafe solvents
38. S22 R&D Design Goals
39. Stabilant use on PLCC's
40. Sensor problem solution
41. Repair of flood damage
42. Marine electrical & electronics
43. All Cameras & Video Equipment
44. SCSI removable SCA drives, caddies & connections
45. Home Theater & Computer Connectors

Some of these application notes are repetitive of material in other application notes. We realize this. But some were written as a reference to a contact problem in a particular field or application.

NOTICE: This data has been supplied for information purposes only. While to our knowledge it is accurate, users should determine the suitability of the material for their application by running their own tests. Neither R.A.L. Audio Services, D.W. Electrochemicals Ltd., their distributors, or their dealers assume any responsibility or liability for damages to equipment and/or consequent damages, howsoever caused, based on the use of this information.
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Stabilant 22
REVIEWS
Over the years, Stabilant 22 has been highly parsed in publications that target a wide range of electronics applications including:
* Andrew Marshall's Audio Ideas Guide
* BYTE Magazine (7 articles)
* Windows Magazine
* Q.S.T. Amateur Radio
* Model Railroads (2 articles)
* Motor Magazine
Stabilant 22
TECHNICAL NOTES
1. MSDS - Stabilant 22
2. General Information
4. MSDS - Stabilant 22A
5. MSDS - Stabilant 22E
9. MSDS - Stabilant 22L
20. Military Applications
21. Elastomer Compatibility
22. Effectiveness of Stabilants
24. Connector Harmonic Distortion
39. Signal rise time

There are gaps in the sequence numbers below because some Technical Note s were written by the manufacturer for specific companies and are confidential.

NOTICE: This data has been supplied for information purposes only. While to our knowledge it is accurate, users should determine the suitability of the material for their application by running their own tests. Neither R.A.L. Audio Services, D.W. Electrochemicals Ltd., their distributors, or their dealers assume any responsibility or liability for damages to equipment and/or consequent damages, howsoever caused, based on the use of this information.
Stabilant
Stabilant 22 Contact Enhancer

Stabilant 22 Contact Enhancer

We carry the complete line of Stabilant products. Looking for something not listed here? Please contact us.

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