Table 2 Overview of conducted interviews... | Emerald Publishing

Table 2

Overview of conducted interviews and other data sources

Data types	Data sources	Contribution to the data
4x Interviews with senior engineers (interviewee code “T” for technical department) with 10–20 years of experience in automotive electronics and who participated in the OEMs’ selection of MCUs	R&D • OEM1-T1 • OEM1-T2 • OEM2-T1 • OEM3-T1	R&D’s perspective of the sourcing work towards the supply network Reasons for selection of MCUs Names of suppliers of ECUs and MCUs Changes in the supply network Validation of network maps
5x Interviews with senior procurement (interview code “P”) and supplier quality management (interview code “SQM”) professionals with more than 15 years of experience in the procurement of electronics	Procurement • OEM1-P1 (2x), OEM1-P2, OEM1-P3, OEM1-P4 • OEM1-SQM1 (2x), OEM1-SQM2 • OEM2-P1. OEM2-P2 • OEM3-P1	Procurement focus and its motivation Validation of network maps Changes in the supply network
1 Interview with logistics coordinator (interview code “L”)	Logistics • OEM1-L1	Responsibilities of procurement and logistics to secure component supply
3x Interviews with professionals with 10+ years in the semiconductor industry	Semiconductor industry • SEC expert SE-1 • SEC expert SE-2 • Business development • semiconductor supplier SS1	The semiconductor industry’s perspective on OEMs’ sourcing strategy Impacts of OEMs’ procurement focus for the network
Secondary data on network from OEM1	Schematics of OEM1’s E/E architecture containing all ECUs used in the years 1996, 2005, 2015, 2020 and 2023	List of ECUs purchased by OEM1 in each year: each schematic drawing showed all ECUs used in OEM1’s vehicles for a given year
Secondary data on network from OEM1	• Excel document with the Tier 1 and MCU suppliers per ECU • Sourcing documents	Names of Tier 1 and semiconductor suppliers: for each ECU, the list provided names of suppliers involved For years 2015, 2020, and 2023, names of suppliers were obtained from existing OEM1’s supplier lists For years 1996 and 2005, names of suppliers were obtained through interviews
Secondary data on the network	15 news articles containing complementary or confirmatory information to collected data	Validation and complementation of interview data
Participatory observation	Two years of participation by one of the authors in the procurement team responsible for ECUs at one of the OEMs	Names of Tier 1 and semiconductor suppliers

Data types	Data sources	Contribution to the data
4x Interviews with senior engineers (interviewee code “T” for technical department) with 10–20 years of experience in automotive electronics and who participated in the OEMs’ selection of MCUs	R&D• OEM1-T1 • OEM1-T2 • OEM2-T1 • OEM3-T1	R&D’s perspective of the sourcing work towards the supply networkReasons for selection of MCUsNames of suppliers of ECUs and MCUsChanges in the supply networkValidation of network maps
5x Interviews with senior procurement (interview code “P”) and supplier quality management (interview code “SQM”) professionals with more than 15 years of experience in the procurement of electronics	Procurement• OEM1-P1 (2x), OEM1-P2, OEM1-P3, OEM1-P4 • OEM1-SQM1 (2x), OEM1-SQM2 • OEM2-P1. OEM2-P2 • OEM3-P1	Procurement focus and its motivationValidation of network mapsChanges in the supply network
1 Interview with logistics coordinator (interview code “L”)	Logistics• OEM1-L1	Responsibilities of procurement and logistics to secure component supply
3x Interviews with professionals with 10+ years in the semiconductor industry	Semiconductor industry• SEC expert SE-1 • SEC expert SE-2 • Business development • semiconductor supplier SS1	The semiconductor industry’s perspective on OEMs’ sourcing strategyImpacts of OEMs’ procurement focus for the network
Secondary data on network from OEM1	Schematics of OEM1’s E/E architecture containing all ECUs used in the years 1996, 2005, 2015, 2020 and 2023	List of ECUs purchased by OEM1 in each year: each schematic drawing showed all ECUs used in OEM1’s vehicles for a given year
Secondary data on network from OEM1	• Excel document with the Tier 1 and MCU suppliers per ECU • Sourcing documents	Names of Tier 1 and semiconductor suppliers: for each ECU, the list provided names of suppliers involvedFor years 2015, 2020, and 2023, names of suppliers were obtained from existing OEM1’s supplier listsFor years 1996 and 2005, names of suppliers were obtained through interviews
Secondary data on the network	15 news articles containing complementary or confirmatory information to collected data	Validation and complementation of interview data
Participatory observation	Two years of participation by one of the authors in the procurement team responsible for ECUs at one of the OEMs	Names of Tier 1 and semiconductor suppliers

Source(s): Created by the authors