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Welcome to the on-line version of the “ The Potentiometer Handbook” originally 
published  in hard cover by McGraw-Hill Book Company. 

We have made only a few changes to the original in the area of Industry Standards and 
Military Specifications.  

The technology represented in this  handbook has had no significant change in years and
remains as viable today as it was when this volume was published. 

To use this version you can scroll down page by page or you can go to the Table of Contents
to select a specific subject or chapter and click on the title or page number to go directly 
to the section you selected. 
To return to the previous view simply right click your mouse and select “Previous View” 
from the pop up window. 

In order for these functions to operate properly you must use Acrobat Reader 8 or higher. 
If you need to download Acrobat for free, use the Acrobat icon below. 

For more information you can also go to the Bourns web site at 

www.bourns.com

 , select applications 

information under the “About Us” button then selecting the “Library button”. 

You may also want to review applciaction information from the “Trimmer Primer” by using link below: 

http://www.bourns.com/pdfs/trmrpmr.pdf

Copyright 1975, 2008 

Adobe

 and 

Adobe Reader

 are registered trade-

marks of Adobe Systems Incorporated.

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VRCI (VariableResistance Components Institute) is  now known   
        as VECI (Variable Electronic Components Institute). 

 

                                             

 

 
 

  The Link to the VECI Standards below is provided for the convenience of the user.  
 

http://www.veci-vrci.com/standards.htm

 

 

 

VRCI-P-100A 
 

Wirewound and Non-wirewound Precision Potentiometers

  

 

VRCI-T-110B 
 

Wirewound and Non-wirewound Trimming Potentiometers

  

 

VRCI-C-120 
 

Wirewound and Non-wirewound Industrial Grade Panel Potentiometers

  

 

VRCI-S-400 
 

Potentiometer Mounted Switches

  

 

VRCI-SMT-300

 

 
Surface Mount, Sealed, 5MM Square Single-turn Trimming Potentiometer

  

Mechanical Outlines and Land Patterns

  

 

VRCI-SMT-400

 

 
Surface mount, Sealed, 3MM Single-turn Trimming Potentiometer

  

Mechanical Outlines and Land Patterns

  

 

VRCI-SMT-600

 

 
Surface Mount, Sealed, 6MM Square (1/4") Multi-turn Trimming Potentiometer

  

Mechanical Outlines and Land Patterns

  

 

VRCI-SMT-800

 
Surface Mount, Sealed, 4MM Square Multi-turn Trimming Potentiometer

  

Mechanical Outlines and Land Patterns

  

 

 

 
 

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Various potentiometers are described by military specifications. In most cases , 
potentiometers qualified to these speicifations are available from several manufacturers. 
These specifications are used by non-military as well as military users because they are 
often a convenient  standard or reference. Some component or standards engineers 
modify or use complete sections of military speicifications in establishing their own 
potentiometer requirements. 
Since these specification are revised from time to time we have included only the links to 
them below. 
The specifications, standards and handbooks are found on the DSCC (Defence Supply 
Center Columbus) web site along with many other related documents. 

 

DSCC Home page.  

http://www.dscc.dla.mil/

 

 

Specifications.

 

 

Basic Type 

Description

 

 
Mil-PRF-12934 

 RR 

 Wirewound 

Precision 

http://www.dscc.dla.mil/Programs/MilSpec/ListDocs.asp?BasicDoc=MIL-PRF-12934

 

 
Mil-PRF-19 

 

RA 

 

Wirewound (Low Operating Temperature) 

http://www.dscc.dla.mil/Programs/MilSpec/ListDocs.asp?BasicDoc=MIL-PRF-19

 

 
Mil-PRF-22097 

 RJ 

 Non-Wirewound (Adjustment Type) 

http://www.dscc.dla.mil/Programs/MilSpec/ListDocs.asp?BasicDoc=MIL-PRF-22097

 

 
Mil_PRF-23285 

 RVC 

 Non-Wirewound 

(Panel 

Cpntrol) 

http://www.dscc.dla.mil/Programs/MilSpec/ListDocs.asp?BasicDoc=MIL-PRF-23285

 

 
Mil-PRF-27208 

 RT 

 Wirewound 

(Adjustment 

Type) 

http://www.dscc.dla.mil/Programs/MilSpec/ListDocs.asp?BasicDoc=MIL-PRF-27208

 

 
Mil-PRF-39015 

 RTR 

 Wirewound 

(Lead 

Screw 

Actuated), Established Reliability 

http://www.dscc.dla.mil/Programs/MilSpec/ListDocs.asp?BasicDoc=MIL-PRF-39015

 

 
Mil-PRF-39023 

 RQ 

 Non-Wirewound 

Precision 

http://www.dscc.dla.mil/Programs/MilSpec/ListDocs.asp?BasicDoc=MIL-PRF-39023

 

 
Mil-PRF-39035 

 RJR 

 Non_Wirewound 

(Adjustment), Established Reliability 

http://www.dscc.dla.mil/Programs/MilSpec/ListDocs.asp?BasicDoc=MIL-PRF-39035

 

 
Mil-PRF-94 

 RV 

 Composition 

http://www.dscc.dla.mil/Programs/MilSpec/ListDocs.asp?BasicDoc=MIL-PRF-94

 

 

Standards 

 
Mil-STD-202 Detailed 

specification 

of test methods for electronic and mechanical component  parts 

http://www.dscc.dla.mil/Programs/MilSpec/ListDocs.asp?BasicDoc=MIL-STD-202

 

 
Mil-STD-690 

Sampling plans and procedures for determing failure rates of established reliability devices 

http://www.dscc.dla.mil/Programs/MilSpec/ListDocs.asp?BasicDoc=MIL-STD-690

 

 
Mil0STD-790 

Reliability Assurance program for electronic parts and specifications 

http://www.dscc.dla.mil/Programs/MilSpec/ListDocs.asp?BasicDoc=MIL-STD-790

 

 
 

Handbook 
 

Mil_HDBK-199 

Resistors, Selection and use of. 

http://www.dscc.dla.mil/Programs/MilSpec/ListDocs.asp?BasicDoc=MIL-HDBK-199

 

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