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Stabilant 22 Contact Enhancer Application Notes

App. Note 16 - Aids to IC insertion

General:

While Stabilant 22/22A/22E isknown primarily for its property of providing the reliability of a soldered joint without forming a physical bond, it is becoming increasingly used in a dual role: not only for the reliability increase, but as an insertion aid for both machine and hand-insertion of IC's!

How does it assist in the insertion of IC's?

Quite often, when an IC is inserted in a socket, one or more of the pins will buckle and bend-under. Sometimes this is not detected until the system is powered-up, and it shows a fault. In some cases, it might not be detected until some program does not run properly! Because of the large number of IC's used in many computers, the job of locating a single bent-under pin is often very difficult. And when a number of boards are being hand-stuffed with "socketed" IC's, there is an excellent chance that this problem will occur.

When Stabilant 22 is used on the IC pins, its lubricating qualities reduce the insertion forces on the individual pins, making it much less likely that any pin will be bent-under.

How can Stabilant 22 be applied to IC pins?

An applicator can be made by using a rectangle of the conductive foam used to transport static-sensitive IC's. Using five-minute epoxy, glue this material on the bottom of a container,-such as a petri-dish or a shallow tin. Stabilant 22 (as the concentrate) is then poured over the foam pad.

To use, the IC is picked out of the dispenser with a standard tool, and its pins thrust into the pad in order to wet them with the Stabilant. (While a small amount will b left on the bottom of the IC this will not affect its performance.) The IC is then inserted into its socket in the usual fashion. It will be noticed that there is less insertion resistance.

The use of Stabilant 22 is not a substitute for having the pins of the IC properly lined up or aligned in properly spaced parallel rows.

While hand insertion of IC's without the use of a tool is made much easier when Stabilant 22 is used as a lubricant, we suggest that a tool be used wherever possible.

Can Stabilant 22 be diluted?

The lubricating quality will, of course, be reduced as the Stabilant is diluted. If it is necessary to dilute it, we would suggest that a small amount of isopropyl alcohol be used - no more than 1 part of isopropyl alcohol to 3 parts of Stabilant 22 by volume.

Can Stabilant 22A be used in this application?

Yes, but as Stabilant 22A is diluted 4:1 with isopropyl alcohol, much more will have to be applied to the pins and its lubricating qualities will be realized only after the alcohol evaporates. This could slow down the process of IC insertion.

Revision 4


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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