ASM-SMT-Technical Conditions of Order and Deliveries (TCOD).pdf - 第23页
23 www.asm-smt.com Electronic assemblies (printed boards) from ASM AS shall meet the requirements of Class 2 products for general Industrial electronic equipment as defined by ANSI/IPC-A-610 and J-STD- 001. Exceptions fr…
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9.2. Electrical / electronic assemblies (printed circuit boards)
9.2.1. Applicable regulations, guidelines and standards
The standards listed below shall be applied in their latest version.
General
IPC-9191 General Guidelines for Implementation of Statistical Process Control (SPC)
EN 61010-1 Safety requirements for electrical equipment for measurement, control and laboratory
use – Part 1: General requirements
Assemblies
ANSI-IPC-A-610 Acceptability of Electronic Assemblies, Class 2 in general, exceptions vide among
chapter 9.2.2
J-STD-001 Requirements for Soldered Electrical and Electronic Assemblies Class 2 in general
IPC-7711/7721 Rework of Electronic Assemblies Class 2 in general
IPC-CC-830 Qualification and Performance of Electrical Insulating Compound for Printed Wiring
Assemblies
Printed Boards
IPC-A-600 Acceptability of Printed Boards, Class 2 in general
IPC-6011 Generic Performance Specification for Printed Boards, Class 2 in general
IPC-6012 Qualification and Performance Specification for Rigid Printed Boards, Class 2 in
general
IPC-6013 Qualification and Performance Specification for Flexible Printed Boards, Class 2 in
general
Design:
IPC-SM-782 Surface Mount Design and Land Pattern Standard, Class 2 in general, End-Use
Application (1.2.1) chapter 5
IPC-2152 Standard for Determining Current-Carrying Capacity in Printed Board Design
UL 94 Test for Flammability of Plastic Materials for Parts in Devices and Appliances
IEC 60825-1 Safety of laser products; part 1: equipment classification, requirements and user’s
guide
Handling:
IEC 61340-5-1 Electrostatics - Part 5-1: Protection of electronic devices from electrostatic
phenomena - General requirements
IEC 61340-5-3 Electrostatics - Part 5-3: Protection of electronic devices from electrostatic
phenomena - Properties and requirements classification for packaging intended for
electrostatic discharge sensitive devices
9.2.2. Requirements
The requirements of the guidelines and standards listed in Subsection 9.2.1 must be met to the extent that they are
applicable.
For reasons of environmental protection, the manufacturing of printed circuit board shall always be based on the “no
clean process”
On printed circuit boards, only display LED`s (e.g. Power ON / OFF etc.) may be used which do not fall in the scope of the
laser protection class according to IEC 60825-1:(2014).
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Electronic assemblies (printed boards) from ASM AS shall meet the requirements of Class 2 products for general
Industrial electronic equipment as defined by ANSI/IPC-A-610 and J-STD-001.
Exceptions from this rule include:
1. Residual wire lengths on the soldering side of printed boards. The maximum permissible cut lead length is 2mm;
more accurate values shall be specified in the documentation of the printed boards.
2. Population with components: ANSI/IPC-A-610, vertical - radial leads
3. Soldered connections: ANSI/IPC-A-610, solder fillet (various chapters)
Items 2. and 3. are subject to the Class 3 requirements for power electronics.
The acceptance at ASM AS occurs according to ANSI/IPC-A-610.
The printed circuit boards used must meet the UL requirements UL 94 V0. The UR logo, the manufacturer’s logo, the
board type and the flame resistance class according to UL 94 shall be etched into the board as part of the layout. The
supplier shall furnish evidence of the manufacturer’s UL approval during the First article testing of the assemblies.
9.2.3. Monitoring of manufacturing processes
For the statistical monitoring of the manufacturing processes, the application of the IPC-9191 “General Guidelines for
Implementation of Statistical Process Control (SPC)” is recommended.
9.2.4. Repair, rework and modification
Employees, who perform repair, rework and modification operations on printed circuit boards must be qualified at the
“Expert” skill level according to IPC-7721. Appropriate training certifications shall be provided. The required level of
conformance is the highest level according to IPC 7711.
9.2.5. Tests on electrical / electronic assemblies (printed boards)
9.2.5.1. Incoming inspections
The purchased components, printed circuit boards and manufacturing equipment must be subjected to a defined quality
test (e.g. solderability test) prior to their use.
9.2.5.2. Intermediate inspections
Suitable quality records and quality metrics must be maintained for each quality-relevant manufacturing step (solder
application, assembly and soldering process). These must record the fault and rework rates as well as the initiated
corrective and preventive measures for each type of assembly.
9.2.5.3. Final inspection and testing
Every printed board shall be subjected to functional testing according to the test instructions. The results shall be
recorded as First Pass Yield.
The contents of the inspection shall be defined in test instructions, usually by the supplier, and released by ASM AS. The
test instructions shall define the test methods, the test attributes, the test equipment, the test markings and the
documentation of results.
The rework / repairs that are performed on failed assemblies shall be recorded and evaluated by fault attributes.
9.2.5.4. First article inspection on electrical / electronic assemblies (printed boards)
Test features:
• Documentation of all set point and actual values from the design specifications of the printed boards
• Use of components according to bill of materials
• Quality of workmanship and soldered joints in compliance with ANSI/IPC-A-610
• Labeling and identification of the printed boards according to requirements and design specifications
• Functional test including test set-up according to test instructions, including a listing of the actual values of the
attributes to be tested
• Preparation and release of work and test plans
• Compliance with the requirements with respect to packaging and the labeling of packaging
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• Evidence of compliance with UL requirements.
• Evidence on ROHS compliance if required
• Packaging proposal for serial production shipment
9.3. Cables, lines and wiring
9.3.1. Applicable regulations, guidelines and standards
IEC 60204-1 Safety of machinery – Electrical equipment of machines – Part 1: General
requirements
IEC 60352-1 Solder less connections – Part 1: Wrapped connections
IEC 60352-2 Solder less electrical connections – Part 2: Crimped connections
IEC 60352-3 Solder less electrical connections – Part 3: Solder less accessible insulation
displacement connections
IEC 60352-4 Solder less electrical connections – Part 4: Solder less non-accessible insulation
displacement connections
IEC 60998-2 Part 1 – 4 Requirements for connecting devices as separate entities with screw-type
and screw less-type clamping
IPC-A-620 Requirements and Acceptance for Cable and Wire Harness Assemblies
UL 94 Test for Flammability of Plastic Materials for Parts in Devices and Appliances
VDE 0100 Erection of power installations with rated voltages below 100V
VDE 0611-3:2010-03 Part 7-2: Ancillary equipment – Protective conductor terminal blocks for copper
conductors
IEC 60947-1 Table 4 Tightening torque for the proof of the mechanical stability of screw connections/-
terminals
9.3.2. Requirements
The requirements of the guidelines and standards that are listed in Subsection 9.3.1 (1.1.1) must be met to the extent that
they are applicable.
Crimped designs (burrs, cracking, asymmetry and distortion) as well as gas-tightness (all individual wires must be
deformed into polygons and distributed evenly), extraction forces and crimping heights must comply with the relevant
design specifications.
Insulation crimping connections shall meet the relevant design specifications.
The contacts to be used are specified in the bills of materials.
The use of ring lugs on current-carrying cables and wires must be avoided!
9.3.3. Tests on prefabricated cables and lines
9.3.3.1. Electrical test
Scope of test: 100%
Cables and lines with fitted connectors shall be tested for continuity of the individual conductors and for short-circuits
between conductors. The connectors shall be included in the testing. The test must detect incorrect or missing connector
pin assignments and coding.
For cables fitted with wire end ferrules, each conductor shall be tested for continuity. For shielded cables, the shield shall
be treated as another conductor in the test.
9.3.3.2. Process protection of crimping quality
In order to receive a process-safe functioning crimping connection, a clean stripping must be ensured.