EN 62421:2007 – Electronics assembly technology – Electronic modules
1 Scope and object
This International Standard provides a generic standard of electronic modules on which their sectional standards are based.
This standard provides a definition, business model, interface between the trading partners,and related areas of standardization of electronic modules. In addition a generic set of test
method is provided.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60068 (all parts), Environmental testing
IEC 60068-1 :1 988, Environmental testing – Part 1: General and guidance
IEC 60068-2-1 : Environmental Testing – Part 2-1: Tests – Test A: Cold
IEC 60068-2-2: Environmental testing – Part 2-2: Tests – Tests B: Dry heat
IEC 60068-2-6: Environmental testing – Part 2-6: Tests – Test Fc: Vibration (sinusoidal)
IEC 60068-2-1 4: Environmental testing – Part 2-14: Tests – Test N: Change of temperature
IEC 60068-2-20: Environmental testing – Part 2-20: Tests – Test T: Soldering
IEC 60068-2-21 : Environmental testing – Part 2-21: Tests – Test U: Robustness of terminations and integral mounting devices
IEC 60068-2-27: Environmental testing – Part 2-27: Tests – Test Ea and guidance: Shock
IEC 60068-2-45: Environmental testing – Part 2-45: Tests – Test XA and guidance: Immersion in cleaning solvents
IEC 60068-2-58: Environmental testing – Part 2-58: Tests – Test Td: Test methods for solderability, resistance to dissolution of metallization and to soldering heat of surface mounting devices (SMD)
IEC 60068-2-78: Environmental testing – Part 2-78: Tests – Test Cab: Damp heat, steady state
ISO 3: Preferred numbers – Series of preferred numbers
3 Terms and definitions
For the purposes of this document, the terms and definitions given in the IEC 60068 series, as well as the following, apply.
3.1
electronic module
functional block which contains individual electronic elements and /or electronic packages, to be used in a next level assembly NOTE An individual module having an application-specific function, including electronic, optoelectronic,mechanical or other elements. The module typically provides protection of its elements and packages to assure the required level of reliability.
Electronic modules may be categorized by signal interface, for example:
– wired module: a module which has only electrical interfaces (majority of present day modules)
– wireless module: a module which has a wireless interface
– opto-electronic module: a module which has an optoelectronic interface
– sensor module: a module which can input physical information
– actuator module: a module which could output physical information
3.2
coplanarity
distance in height between the lowest and highest leads or terminals when the module is in its seating plane
3.3
operating temperature range
range of the ambient temperature at which an electronic module may be used continuously
3.4
storage temperature range
range of the ambient temperature at which an electronic module may be stored continuously
3.5
rated voltage
maximum d.c. voltage or the root-mean square value of an a.c. voltage which may be applied continuously to an electronic module at any temperature within the operating temperature range
EN 62421:2007 – Electronics assembly technology – Electronic modules