Cart (0)
  • No items in cart.
Subtotal
$0
There is a technical issue about last added item. You can click "Report to us" button to let us know and we resolve the issue and return back to you or you can continue without last item via click to continue button.
Search book title
Enter keywords for book title search
Search book content
Enter keywords for book content search
Filters:
FORMAT
BOOKS
PACKAGES
EDITION
to
PUBLISHER
(1)
(316)
(569)
(43)
(234)
(969)
(643)
(1935)
(64)
(91921)
(54)
(535)
(117)
(28)
(20)
(19)
(92193)
(3)
(17)
(1)
(351)
(298)
(6023)
(239)
(16)
(5)
(1619)
(16)
(18)
(28)
(4)
 
(6)
(7)
(115)
(3)
(57)
(5)
(5)
(1)
(1)
(2)
(23)
(26)
(27)
(13)
(61)
(24)
(22)
(7)
(8)
(20)
(1)
(3)
(50)
(6)
(31)
CONTENT TYPE
 Act
 Admin Code
 Announcements
 Bill
 Book
 CADD File
 CAN
 CEU
 Charter
 Checklist
 City Code
 Code
 Commentary
 Comprehensive Plan
 Conference Paper
 County Code
 Course
 DHS Documents
 Document
 Errata
 Executive Regulation
 Federal Guideline
 Firm Content
 Guideline
 Handbook
 Interpretation
 Journal
 Land Use and Development
 Law
 Legislative Rule
 Local Amendment
 Local Code
 Local Document
 Local Regulation
 Local Standards
 Manual
 Model Code
 Model Standard
 Notice
 Ordinance
 Other
 Paperback
 PASS
 Periodicals
 PIN
 Plan
 Policy
 Product
 Program
 Provisions
 Requirements
 Revisions
 Rules & Regulations
 Standards
 State Amendment
 State Code
 State Manual
 State Plan
 State Standards
 Statute
 Study Guide
 Supplement
 Technical Bulletin
 All
  • ASTM
    F1681-07a Standard Test Method for Determining Current Carrying Capacity of a Conductor as Part of a Membrane Switch Circuit
    Edition: 2007
    $82.37
    Unlimited Users per year

Description of ASTM-F1681 2007

ASTM F1681 - 07a

Standard Test Method for Determining Current Carrying Capacity of a Conductor as Part of a Membrane Switch Circuit

Active Standard ASTM F1681 | Developed by Subcommittee: F01.18

Book of Standards Volume: 10.04




ASTM F1681

Significance and Use

p>Current carrying capacity is used by designers and manufacturers of electronic interface circuitry to ensure that the membrane switch can reliably handle the loads occurring in normal use and under extreme circumstances. A thorough understanding of CCC allows manufacturers to take it into account when developing design rules for membrane switches.

Failures due to exceeding the CCC of a circuit may take the form of a significant change in conductor resistance, insulation breakdown (shorts), or conductor breakdown (opens).

Since a number of design parameters, such as trace width, ink film thickness, etc. affect the final test results, any conclusions should only be applied to specific designs, rather than to a general combination of materials.

Current carrying capacity tests may be destructive and units that have been tested should be considered unreliable for future use.

Current carrying capacity may be significantly different for static loads and dynamic (that is, cycling) loads. Failure modes are also generally different.

The use of a thermocouple to monitor the temperature of the UUT may be helpful to monitor the progress of the test.

Initial expected starting current should be calculated in advance to prevent damage to test equipment.

1. Scope

1.1 This test method covers the determination of the current carrying capacity of a conductor as part of a membrane switch.

1.2 This test method may be used to test a circuit to destruction, that is, to determine its maximum current carrying capacity, or it may be used to test the ability of a circuit to withstand a desired current level.

1.3 This test method applies only to static conditions, and does not apply to contact closure cycling of a membrane switch under current load (test method forthcoming).

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

F1578 Test Method for Contact Closure Cycling of a Membrane Switch

F1680 Test Method for Determining Circuit Resistance of a Membrane Switch


Keywords

circuit resistance; current carrying capacity; membrane switch; power capacity;


ICS Code

ICS Number Code 19.080 (Electrical and electronic testing); 29.120.40 (Switches)


DOI: 10.1520/F1681-07A

ASTM International is a member of CrossRef.

ASTM F1681

This book also exists in the following packages...

Year Publisher Title Annual Price
VAR
ASTM
[+] $971.23 Buy
VAR
ASTM
[+] $2,452.26 Buy

Subscription Information

MADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.

 

Some features of MADCAD.com ASTM Standards Subscriptions are:

- Online access: With MADCAD.com’ s web based subscription service no downloads or installations are required. Access ASTM Standards from any browser on your computer, tablet or smart phone.

- Immediate Access: As soon as the transaction is completed, your ASTM Standards Subscription will be ready for access.

 

For any further information on MADCAD.com ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.

 

About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.

X