New ASTM D2000-12 released, Standard Classification System for Rubber Products in Automotive Applications

ASTM International has just released the new 2012 Edition for ASTM D2000, “Standard Classification System for Rubber Products in Automotive Applications.”  One of Document Center‘s best sellers from ASTM, the new 53 page revision provides a classification system that covers the properties of vulcanized rubber materials (natural rubber, reclaimed rubber, synthetic rubbers, alone or in combination).  It’s intended for use in rubber products for automotive applications.  However, it may serve many of the needs of other industries in much the same manner as SAE numbered steels.

This classification system is based on the premise that the properties of all rubber products can be arranged into characteristic material designations. These designations are determined by types, based on resistance to heat aging, and classes, based on resistance to swelling in oil. Basic levels are thus established which, together with values describing additional requirements, permit complete description of the quality of all elastomeric materials.

When the rubber product is to be used for purposes where the requirements are too specific to be completely prescribed by this classification system, it is necessary for the purchaser to consult the supplier in advance, to establish the appropriate properties, test methods, and specification test limits.

Over the years, ASTM D2000 has replaced two U.S. government documents — A-A-1719, Rubber, Sheet, Solid and MIL-R-3065, Rubber, Fabricated Products — both of which are now obsolete.

ASTM D2000-12 and the other ASTM standards may all be purchased from Document Center Inc. through our website, www.document-center.com.  They can be purchased in paper or pdf format, and many have redline editions available as well.  For more information, contact us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com).  We happy to assist you with all your standards questions and issues.

New MIL-STD-1472 Revision G, “Human Engineering”

There’s a new Revision G for a long time favorite Department of Defense Design Criteria Standard here at Document Center  — MIL-STD-1472, “Human Engineering.”  No, this is not a cloning manual!  This 381-page standard establishes general human engineering (aka human factors engineering) design criteria for military systems, subsystems, equipment, and facilities.

The purpose of this standard is to present human engineering design criteria, principles, and practices to optimize system performance.  The new revision makes full consideration of inherent human capabilities and limitations as part of the total system design trade space to more effectively integrate the human as part of the system, subsystems, equipment, and facilities to achieve mission success.

Human engineering is one of seven domains of Human-systems integration (as defined in the DoD 5000 series). The purpose of this standard is to present human engineering design criteria, principles, and practices to be applied in the design of systems, equipment, and facilities in order to:

a. Achieve required performance by operator, control, and maintenance personnel.

b. Achieve required manpower readiness for system performance.

c. Achieve required reliability of personnel-equipment combinations.

d. Foster design standardization within and among systems.

This standard does not alter requirements for system development participation of human engineering specialists to interpret and implement these practices and to provide solutions to human engineering problems which arise and which are not specifically covered by the document.

MIL-STD-1472 has not had a thorough technical review since the late 1980s. MIL-STD-1472D was promulgated in March 1989 and addressed the level of technology that existed through 1988 or possibly 1987. The “E” revision, released in 1996, was mostly cosmetic; the text was changed to a non-proportional font in order to reduce white space. The “F” revision from 1999 consisted mainly of moving the anthropometric data from MIL-STD-1472 to MIL-HDBK-759, but little else. As a result, requirements and design criteria contained in previous versions of MIL-STD-1472 may no longer be applicable to today’s technology. The operational benefits of emerging technologies may be limited due to the out-of-date design criteria.

The changes made in the Revision G over the previous version are substantial. The organizational structure of the standard was revamped to group similar material in the same section of the document. Obsolete provisions (e.g., reference to dot-matrix printers) were deleted, out-of-date provisions were updated to reflect the latest research, and new provisions were added to address emerging technologies.  There is a section (6.4) where the changes are summarized.

Tomorrow’s systems will depend on greater cognitive processing on the part of the human operator, maintainer, and support personnel. Portable or wearable computers are likely to be commonplace. New display concepts such as virtual reality, haptic (touch sensing), and three-dimensional are receiving a great deal of interest, as are voice, pointing, gesture, and eye-blink control systems.

Technology, if misapplied, will impose human performance requirements that cannot be satisfied. Many technologies are evolving rapidly; the human is not. The benefits of new technologies may not be realized if one fails to consider human capabilities and limitations.

The new MIL-STD-1472 and all publicly distributed Department of Defense documents are all available from Document Center Inc.  You can order on our website, www.document-center.com, or by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com).  We provide additional services including auditing, monitoring and reporting on standards collections.

New MIL-HDBK-780 Revision D with Change 1 released for Standard Microcircuit Drawings

MIL-HDBK-780 has just been revised.  The new Revision D with Change Notice 1 interfiled is titled “Standard Microcircuit Drawings.”   This 47-page handbook provides guidance on standard microcircuit drawings (SMD’s) and is available now from Document Center Inc.

The purpose of the SMD program is to minimize the proliferation of specification and source control drawings within the Department of Defense (DoD).  The use of one SMD for an item of supply in use by DoD Departments and Agencies is the objective of this program.

A DoD handbook is a guidance document that is not enforceable in a military contract.  This particular handbook moves through the format of the SMD drawing section by section, providing definitions, parameters and other clarification for each one.  There is even a sample SMD at the end of the document.

Here’s a summary of MIL-HDBK-780D Change 1 modifications:
1. References to MIL-HDBK-512 has been changed to MIL-STD-3018, which supersedes it.
2. References to MIL-STD-1835 and SD-19 have been added.
3. References to ASME Y14.5M has been changed to ASME Y14.5, which supersedes it.
4. The organization notated as ASME has been changed from American Society of Mechanical Engineers to ASME International to reflect the current name.
5. Section 2, and throughout, the web address for acquiring government specifications and standards has been changed to the current address for the Assist online services.
6. Section 4.2.5.5, Classification of conformance inspections has been edited to include Group E which was missing.
7. In various locations, Defense Supply Center Columbus has been changed to DLA Land Maritime to reflect the current name.
8. Figures 1-6 has been changed to reflect current boiler plates.
9. Where applicable, changes were made to comply with MIL-STD-967 for preparation of a military handbook.

These changes are marked in the left margins by asterisks to assist the user of the handbook.

The MIL-HDBK-780 and all publicly distributed DoD documents are available in paper or pdf format from Document Center Inc.  Use our website, www.document-center.com, or contact us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com).  Don’t hesitate to ask us any questions you may have about these documents.  We routinely help our customers with all sorts of issues regarding the standards they use.

New JESD-46 Revision D, Customer Notification of Product/Process Changes by Solid-State Suppliers

Based in Silicon Valley, Document Center Inc. has been selling standards and services to the Semiconductor Industry since our founding in 1982.  One of our top-selling standards to this niche is the JESD 46, “Customer Notification of Product/Process Changes by Solid-State Suppliers.”  The standard has just been updated by the release of Revision D, the new 12-page edition of this document.

This document covers solid-state products (labeled semiconductor products in the previous editions) and their associated processes.  It establishes procedures to notify customers of changes to solid-state products and associated processes.

JESD46D covers the basics of a PCN (Product – or Process – Change Notification) including the criteria or methodology used to classify the changes and elements to be included in the procedure.

It also includes minimum content to be included in the PCN, and examples of major changes that may require notification (Annex A).  Annex B reviews the differences between JESD46D and the previous edition, JESD46C.

All JEDEC standards are available from Document Center Inc. in both paper and pdf format.  Use our website, www.document-center.com, or phone us (650-591-7600), fax us (650-591-7617) or send us an email (info@document-center.com).  Thousands of customers rely on us to provide them with documentation and updating services.  You should too!

New Editions released for 3 Best-selling ASTM standards: ASTM A240, ASTM A370, and ASTM A480

I’ve blogged about all 3 of these ASTM standards before, since they are some of the most frequently requested standards Document Center sells.   We want to keep you posted when new issues are released, so here is the latest information on ASTM A240, ASTM A370, and ASTM A480.

ASTM A240/A240M-11b, “Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications.”  This is the third revision for 2011, and replaces the A240/A240M-11 and A240/A240M-11a editions.

ASTM A370-11a, “Standard Test Methods and Definitions for Mechanical Testing of Steel Products.”  The second revision for 2011, replacing A370-11.

ASTM A480/A480M-11b, “Standard Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip.”  The third revision for 2011, superseding the A480/480M-11 and A480/A480M-11a editions.

These ASTM standards are available from Document Center Inc.  in red-line editions.  These are a quick and easy way to compare all of the changes between the current, active standard and the previous version.  You get copies both of the new edition and the previous edition with the markup visible to show you additions, deletions and other changes to the old text to create the new.  There is a slight increase in the price of the standard to cover the cost of this service.

Just order on Document Center’s website, www.document-center.com, and request the redline edition in your order notes.  Or contact us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com).  Not all ASTM’s have redline editions, but when they are available they can save you a lot of time and money.

New NAS 1638 Revision 4 released, Cleanliness Requirements of Parts Used in Hydraulic Systems

NAS 1638, “Cleanliness Requirements of Parts Used in Hydraulic Systems,” has just be issued as the new Revision 4.  The 3 page National Aerospace Standard remains inactive for new design and is available for purchase from Document Center Inc.  Replacement documents are AS-4059, “Aerospace Fluid Power – Cleanliness Classification for Hydraulic Fluids,” and NAS-380, “NAS Documents, Preparation And Maintenance, In The Inch System Of Units.”

NAS 1638 was first issued in 1964 to provide a means to control the amount of contamination delivered in aircraft hydraulic components.   The standard contains a series of 14 classes covering very clean to very dirty levels, where the interval between each class is double the contamination level. This principle is a feature of many of the classes in more recently developed standards, such as the AS 4059 (adopted as ISO 11218).

The replacement AS 4059 defines cleanliness classes for particulate contamination of hydraulic fluids and includes methods of reporting related data.  Conversion from NAS 1638 cleanliness class specifications to AS4059 class specifications is defined and the differences explained.  This document is preferred because of the versatility in identifying a maximum class in multiple size ranges, the total number of particles larger than a specific size or designating a class for each size.  FYI: NAS 1638 classes based on weight of particles are not applicable to either of these classes and are not included.

There has been a move to the use of Automatic Particle Counters over the years, which is another reason the NAS 1638 is now inactive for new design.  ISO 11171, “Hydraulic fluid power — Calibration of automatic particle counters for liquids,” is the primary standard used for this.

However, NAS 1638 can be used for existing systems where correlation with earlier data is necessary.

All NAS standards are available from Document Center Inc.  Use our website, www.document-center.com, or contact us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com).  We can assist you with all your standards and compliance questions and requirements.

New JESD 625 Revision B available on Requirements for Handling Electrostatic-Discharge-Sensitive (ESDS) Devices

JEDEC has just revised JESD625, “Requirements for Handling Electrostatic-Discharge-Sensitive (ESDS) Devices,” and the new Revision B is now available for purchase from Document Center Inc. in either paper or pdf format.  The new 31 page JESD 625 replaces the previous JESD625a from December 1999.

The passage of a static charge through an electrostatic-discharge-sensitive (ESDS) device can result in catastrophic failure or performance degradation of the part.  This standard establishes the minimum requirements for Electrostatic Discharge (ESD) control methods and materials used to protect electronic devices that are susceptible to damage or degradation from electrostatic discharge (ESD).

Device sensitivity to ESD is determined by test methods for Human-Body Model (ANSI/ESDA-JEDEC JS-001, “Joint Standard for Electrostatic Discharge Sensitivity Testing – Human Body Model (HBM) – Component Level”) and Charged-Device Model (JESD22-C101 “Field-Induced Charged-Device Model Test Method for Electrostatic Discharge Withstand Thresholds of Microelectronic Components”).  ESDS devices with HBM or CDM sensitivities of less than ±200 volts may need additional protective measures beyond those specified in this standard.

The device types for which these requirements are applicable include, but are not limited to, ESD sensitive discrete and integrated circuit semiconductors, multi-chip modules, optoelectronic devices, and thin film passive devices.

JESD 625b is directed at two user groups:

Semiconductor Manufacturers – from wafer electrical probe through shipment of finished devices.  However, the requirements of this standard are not imposed prior to probe. Prior to probe, the manufacturer should take appropriate ESD precautions to minimize damage to devices.

Semiconductor Processing/Testing Facilities – from receipt through shipment of finished devices.  ESDS Device Distributors and users may use this standard or ANSI/ESD S20.20 “Protection of Electrical and Electronic Parts, Assemblies and Equipment (Excluding Electrically Initiated Explosive Devices).”

All ESDS devices shall be handled in accordance with this document until they are considered scrap.

For your convenience, JEDEC has included a two page Annex B with information on the differences between JESD 625a and JESD 625b.

All JEDEC standards, including this new JESD 625, are available for purchase via UPS or download from Document Center Inc.  Use our website, www.document-center.com, or phone us at 650-591-7600, fax us at 650-591-7617, or email us at info@document-center.com.  We can help you with all your standards requirements, including document purchases, monitoring, auditing, and reporting.

New MIL-STD-750 Revision F changes format to this Popular Standard for Test Methods for Semiconductor Devices

The new MIL-STD-750 Revision F, “Test Methods for Semiconductor Devices,” has just been released.  Not only is this a new revision level for this standard, but the format has also changed with the addition of five new parts.  This is one of the most frequently ordered Military Standards here at Document Center Inc. — a real staple of the Semiconductor Industry.

This standard establishes uniform methods and procedures for testing semiconductor devices suitable for use within Military and Aerospace electronic systems. The methods and procedures in the various parts of this standard cover basic environmental, physical, and electrical tests to determine resistance to deleterious effects of natural elements and conditions surrounding military and space operations.

For the purpose of MIL-STD-750F, the term “devices” includes such items as transistors, diodes, voltage regulators, rectifiers, tunnel diodes, and other related parts. This standard is intended to apply only to semiconductor devices. The test methods and procedures described in the various parts of this multipart test method standard have been prepared to serve several purposes:

a. To specify suitable conditions obtainable in the laboratory that give test results equivalent to the actual service conditions existing in the field and to obtain reproducibility of the results of tests. The test methods described by this standard are not to be interpreted as an exact and conclusive representation of actual service operation in any one geographic location since it is known that the only true test for operation in a specific location is an actual service test at that point.

b. To describe, in a series of standards, all of the test methods of a similar character which now appear in the various joint-services semiconductor device specifications so that these test methods may be kept uniform and thus result in conservation of equipment, man-hours, and testing facilities. In achieving this objective, it is necessary to make each of the general test methods adaptable to a broad range of devices.

c. The test methods described by this standard for environmental, physical, and electrical testing of semiconductor devices shall also apply, when applicable, to parts not covered by an approved military sheet-form standard, specification sheet, or drawing.

MIL-STD-750 is now divided into 6 parts:

MIL-STD-750, Revision F, “Test Methods for Semiconductor Devices,” an overview document.

MIL-STD-750-1, Environmental Test Methods for Semiconductor Devices Part 1: Test Methods 1000 through 1999,

MIL-STD-750-2, Mechanical Test Methods for Semiconductor Devices Part 2: Test Methods 2001 through 2999

MIL-STD-750-3, Transistor Electrical Test Methods for Semiconductor Devices Part 3: Test Methods 3000 through 3999

MIL-STD-750-4, Diode Electrical Test Methods for Semiconductor Devices Part 4: Test Methods 4000 through 4999

MIL-STD-750-5, High Reliability Space Application Test Methods for Semiconductor Devices Part 5: Test Methods 5000 through 5999

Documentation and process conversion necessary to comply with this revision shall be completed by 3 July 2012.  The margins of the standard are marked with vertical lines to indicate where changes from the previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations.

MIL-STD-750, including all the new revisions plus obsolete editions as well, is available for purchase from Document Center Inc.  Use our website, www.document-center.com, or phone us (650-591-7600), fax us (650-591-7617) or email us (info@document-center.com).  We can help you keep up with the rapidly changing world of compliance information.

New ASTM B488 2011 Edition released on Electrodeposited Coatings of Gold for Engineering Uses

The new ASTM B488-11 Edition has just been released.  The 8 page standard is titled “Standard Specification for Electrodeposited Coatings of Gold for Engineering Uses.”   This specification covers requirements for electrodeposited gold coatings that contain not less than 99.00 mass % gold and that are used for engineering applications.  It is one of Document Center Inc.’s all-time best selling ASTM standards.

This specification does not cover gold coatings produced from autocatalytic, immersion, and vapor deposition.

Gold coatings conforming to ASTM B488 are employed for their corrosion and tarnish resistance (including resistance to fretting corrosion and catalytic polymerization), bondability, low and stable contact resistance, solderability, and infrared reflectivity. Several types of coatings, differing in gold purity and hardness, are covered by this specification.

Coatings are classified into types, which characterize minimum purity, and codes, which designate Knoop hardness. They can be sampled, tested and conform to specified requirements as to purity, hardness, appearance, thickness, mass per unit area, ductility, adhesion (assessed by either bend, heat, or cutting test), and integrity (including gross defects, mechanical damage, and porosity).

There are 6 Appendixes at the end of the specification, which include non-manditory information only.

Purchase ASTM A488-11 from Document Center Inc., which is celebrating it’s 30th year in business in 2012.  You can use our website, www.document-center.com, or contact us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com).  We have both current and obsolete editions of the ASTM standards available in both paper an pdf format for immediate delivery.

New ARP 6178 released on Fraudulent/Counterfeit Electronic Parts; Tool for Risk Assessment of Distributors

Today we’re going to follow up on our previous blog on AS 5553, “Counterfeit Electronic Parts; Avoidance, Detection, Mitigation, and Disposition.”  SAE has just released a new Aerospace Recommended Practice ARP 6178, “Fraudulent/Counterfeit Electronic Parts; Tool for Risk Assessment of Distributors.”

Dated 12/19/2011, it’s applicable to all organizations that procure electronic components from sources other than the original component manufacturer.  ARP6178 is especially useful for assessing distributors that sell electronic components without contractual authorization from the original component manufacturer.

With the obvious dangers inherent in using counterfeit electronic components, manufacturers need any and all tools at their disposal for identifying and avoiding the use of non-compliant parts.  SAE has been actively working with industry on this topic for a number of years now and these new documents are the result of those efforts.

All current SAE standards, and many obsolete ones, are available from Document Center Inc. via our website, www.document-center.com.  Or consider contacting us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com).  Our staff can assist you in identifying, purchasing, and maintaining the standards you need to protect your business from the liabilities associated with non-conformance to best practices and current standards.