Field failure analysis in the electronics supply chain

Dean88

Table of contents
1. Target and background of the audit standard 4
2. Definition of terms 5
3. Questionnaire for the electronics supply chain in accordance with VDA 6
3.1 Planning the field failure analysis 6
3.1.1 Field failure analysis process 6
3.1.1.1 Process description 6
3.1.1.2 Implementation in the organisation 6
3.1 Planning of the field failure analysis 7
3.1.2.1 Diagnosis scope 7
3.1.2.2 Diagnosis in the supply chain 8
3.1.2.3 Triggering criteria for the NTF process 8
3.1.2.4 Test specification 8
3.1.2.5 Destructive tests 9
3.2 Diagnosis of the field failure part 9
3.2.1 Testing and documentation 9
3.2.1.1 Incoming goods 9
3.2.1.2 Logistics 9
3.2.2 Parts analysis process 10
3.2.3 Resources 10
3.2.3.1 Staff resources 10
3.2.3.2 Material resources 11
3.2.4 Efficiency of the diagnosis 11
3.2.4.1 Key performance indicators (KPI) 11
3.2.4.2 Effectiveness 11
3.2.4.3 Result of the diagnosis 11
3.3 NTF process 12
3.3.1 NTF guideline 12
3.3.2 NTF investigation 14
3.4 Problem analysis 14
4. Case studies 15
4.1 Standard component in the diagnosis for Tier N 15
4.2 Delamination of an IR diode 15
4.3 Moisture level 15
4.4 Oxygen sensor not functioning 16
4.5 Randomly occurring spikes on output 16
4.6 Line failure at low temperature test with a high vout signal 16
4.7 Functional defects in the engine's gas and air supply system 17
5. List of abbreviations 17
6. Appendix 1 – Case studies as NTF report 17 ff

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