WG 6 - TC 91/WG 6

IEC TR 62878-2-9:2022(E) comprises the long-term discussion among Jisso International Council (JIC) members during 1999 and 2005, when the interim agreement among all JIC members about the “concept of Jisso” as well as the “Jisso product level” for the common understanding on IEC TC 91 (electronic assembly technology) activities was reached. Further discussion on “Jisso Product Level” could be needed among the current JIC members to finalize it in the near future based on this technical report.

IEC TR 62878-2-8:2021(E) describes a warpage control of active device embedded substrate along with parameters for determining warpage, which are useful during package assembly. Warpage results are explained using warpage driving force, resistance and neutral axis, for typical die embedded substrate, where the discrete active dies are placed in the core of substrate and interconnected to the substrate by direct Cu bonding. The same principles are applicable in other device embedded substrates. Even though the detailed structure of other device embedded substrates might be different, the origin and determination of the parameters of warpage are the same and thus the purpose of this report is to help engineers improve the warpage behaviours of their products by applying this principle.

IEC 62878-2-602:2021 specifies the requirements and evaluation methods of electrical connectivity. It is applicable to stacked electronic modules.

IEC 62878-1:2019 specifies the generic requirements and test methods for device-embedded substrates. The basic test methods for printed board substrate materials and substrates themselves are specified in IEC 61189-3.
This part of IEC 62878 is applicable to device-embedded substrates fabricated by use of organic base material, which includes, for example, active or passive devices, discrete components formed in the fabrication process of electronic printed boards, and sheet-formed components.
The IEC 62878 series applies neither to the re-distribution layer (RDL) nor to electronic modules defined in IEC 62421.

IEC 62878-2-5:2019 specifies requirements based on XML schema that represents a design data format for device embedded substrate, which is a board comprising embedded active and passive devices whose electrical connections are made by means of a via, electroplating, conductive paste or printing of conductive material.
This data format is to be used for simulation (e.g. stress, thermal, EMC), tooling, manufacturing, assembly, and inspection requirements. Furthermore, the data format is used for transferring information among printed board designers, printed board simulation engineer, manufacturers, and assemblers.
IEC 62878-2-5:2019 applies to substrates using organic material. It neither applies to the re-distribution layer (RDL) nor to the electronic modules defined as M-type business model in IEC 62421.

IEC TR 62878-2-7:2019 (E) describes the accelerated stress testing of passive embedded circuit boards. It can be used for screening finished boards, including multilayer and high-density interconnection (HDI) boards. These boards are mainly for mobile devices.

IEC TR 62878-2-2:2015 describes the necessary information on electrical testing for device embedded substrate. This includes the interconnection open- and short-circuit tests as well as the device functional test. It also provides guidelines by demonstrating the electrical test for device embedded substrate.

IEC 62878-1-1:2015 specifies the test methods of passive and active device embedded substrates. The basic test methods of printed wiring substrate materials and substrates themselves are specified in IEC 61189-3. This part of IEC 62878 is applicable to device embedded substrates fabricated by use of organic base material, which include for example active or passive devices, discrete components formed in the fabrication process of electronic wiring board, and sheet formed components.

IEC TS 62878-2-1:2015 describes the basics of device embedding substrate. It is applicable to device embedded substrates fabricated by use of organic base material, which include for example active or passive devices, discrete components formed in the fabrication process of electronic wiring board, and sheet formed components.

IEC TS 62878-2-3:2015 describes the design guide of device embedded substrates. The design guide of device embedded substrate is essentially the same as that of various electronic circuit boards. This part of IEC 62878 enables a thorough understanding of circuit design, structure design, board design, board manufacturing, jisso (assembly processes) and tests of products. It is applicable to device embedded substrates fabricated by use of organic base material, which include for example active or passive devices, discrete components formed in the fabrication process of electronic wiring board, and sheet formed components.

IEC TS 62878-2-4:2015 describes the test element group devices useful when measuring basic properties of device embedded substrates. It is applicable to device embedded substrates fabricated by use of organic base material, which include for example active or passive devices, discrete components formed in the fabrication process of electronic wiring board, and sheet formed components.