ASM-SMT-Technical Conditions of Order and Deliveries (TCOD).pdf - 第24页
24 www.asm-smt.com • Evide nce of compliance w ith UL requirements. • Evide nce on ROHS compliance if required • Pa ckaging proposal for serial pr oduction shipment 9.3. Cables, lines and wiring 9.3.1. Applicable regulat…
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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.
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The verification for the process capability of the stripping and crimping process must take place according to the
definitions and standards defined in the requirements.
The setup of the stripping devices must be examined and tested. These examinations make the production of the cables
both within the range of the material condition of the isolation, as well as the dimensions necessary before each stripping a
new load.
9.3.3.3. Visual / measuring inspections
Test of cable type (based on order documentation):
• Number of inner conductors
• Colors of conductors (e.g. with respect to connector pin assignment)
• Overall shield, filler cord wire (if available)
• Numbering / coding of conductors
• Check of cord structure:
• Cross-sections of individual conductors
• Shield, filler cord wire (if available)
• Implementation of protective and heat-shrink tubing depending on place of use or type of installation and
based on the state of the art
• Verification of cable dimensions against indications in drawings:
• Total length
• Stripped length (for round cable)
• Splicing length (for ribbon cable)
• Shield.
Check of the surface quality of the cable jack for damage.
Check of the jack stripping / splicing length and the insulation stripping for damage.
Check for cables and lines fitted with connectors:
• Check of the connector type and the connecting elements against the order documentation
• Check of the assembly connector and strain relief or armored conduit union
• Attachment of cable on connector housing (e.g. that the cable jack has been sufficiently inserted through
the armored conduit union and attached)
• Check of the proper mechanical assembly of connector housings (e.g. it must be ensured that the crimp
contact is fixed and locked in the connector housing)
• Check of the identity and identification of the prefabricated cable / line including connector designations.
• Regular examination of the pins and connectors of the testing set on mechanical damage according to
the permissible number of plugging of the used connector of the testing set. Exchange of pins and
connectors of the testing set when recognizable damages are visible, not to damage the test items.
Take up the Check into regular calibration proceeding.
Check of the position of the labeling against the requirements.
For cables with screwed-on connectors, the extraction forces (VDE 0611) as well as the tightening torques (IEC
60947-1 Table 4) must be checked and documented. The relevant processing guidelines of the manufacturers must be
observed.