1 Introduction............................................................................................................................3
1.1 Abstract...........................................................................................................................3
1.2 Application......................................................................................................................3
1.3 Purpose ............................................................................................................................3
1.4 Reading suggestions .........................................................................................................3
2 Ericsson Procured Material Quality Assurance.........................................................................4
2.1 The Procured Material Quality Assurance Organisation ....................................................4
2.2 The PMQA Organisation within Research and Development ............................................4
2.3 The roles at Ericsson regarding the requirements on a component .....................................5
2.4 The Ericsson Supplier Academy .......................................................................................6
2.5 Supplier Improvement Program (SIP) ...............................................................................6
3 Ericsson Quality Targets..........................................................................................................7
3.1 PPM levels .......................................................................................................................7
3.2 Yield levels ......................................................................................................................7
3.3 Capability levels ...............................................................................................................8
4 Supplier Quality Assurance Plan (SQAP) ................................................................................9
4.1 Purpose ............................................................................................................................9
4.2 Level and amount of work required...................................................................................9
4.3 Quality Requirements Planning.......................................................................................11
4.4 SQAP Requirements.......................................................................................................12
4.5 Execution and submission of the individual steps in the SQAP........................................13
5 PMQA and supplier processes in a typical high-volume project .............................................14
5.1 Milestone 1.....................................................................................................................14
5.2 Milestone 2.....................................................................................................................15
5.3 Milestone 3.....................................................................................................................16
5.4 Milestone 4.....................................................................................................................17
5.5 Milestone 5.....................................................................................................................18
5.6 Milestone 6.....................................................................................................................19
5.7 Milestone 7.....................................................................................................................20
5.8 After milestone 7 ............................................................................................................21
6 The 10 steps in the SQAP ......................................................................................................22
6.1 Design Producibility Review (DPR) ...............................................................................22
6.2 Process Failure Mode and Effect Analysis (Process FMEA)............................................24
6.3 Design of Experiments ...................................................................................................26
6.4 SPC and Inspection Plan.................................................................................................29
6.5 Preparation for the Serial Process Verification Run (Preparation SPVR) .........................32
6.6 Quality Plan for Sub-suppliers ........................................................................................36
6.7 Gauge Repeatability and Reproducibility ........................................................................38
6.8 Capability Studies...........................................................................................................42
6.9 Process Sample Approval (PSA).....................................................................................44
6.9.1 Dimensional check of Process Samples....................................................................45
6.9.2 Functionality and Reliability of Process Samples .....................................................46
6.9.3 Cosmetics of Process Samples .................................................................................47
6.10 Serial Process Verification Run (SPVR) .........................................................................48
6.10.1 The process capability study ....................................................................................49
6.10.2 The capacity verification..........................................................................................52
7 SPVR results and actions .......................................................................................................57
7.1 General requirements......................................................................................................57
7.2 Possible scenarios and recommended actions ..................................................................58
SUPPLIER QUALITY ASSURANCE PLAN
GUIDELINE 2(62)
Uppgjord - Prepared Nr - No.
LD/ECS/CI/LM Cai Remitz CI/LQ-98:2656
Dokansv/Godkänd - Doc respons/Approved Kontr - Checked Datum - Date Rev File
LD/ECS/CI/LPC Nicklas Jonsson 99-02-18 C
7.2.1 State of Chaos..........................................................................................................58
7.2.2 Brink of Chaos ........................................................................................................59
7.2.3 Threshold State........................................................................................................59
7.2.4 Ideal State................................................................................................................60
8 Abbreviations