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IPC standarder 2
Generel anvendelse af IPC standarder 3
IPC-A-600H-2010 Workmanship IPC-A-600 Design IPC-7351 2220-KIT Specifications IPC-6010 series Laminates IPC-4101 Documentation IPC-2510 IPC-2581 IPC-D-325 Surface Finish Fx IPC-4552 (NiAu) Solder Mask SM-840 4
Default Requirements 5
Borekvalitet 6
Laminat- kvalitet Bore- / pletteringsproblem Fugtfølsomhed / Delaminering 7
Ikke acceptabel pletteringskvalitet (Ustresset PCB) 8
Annularringsbrud 9
Delaminering Fugtfølsomhed: IPC-1601 10
Eksempel på presseparametre (Isola) 11
Pad lifting relateret til CTE Pad lifting Brud 12
IPC-4101 Laminat specifikation 13
IPC-4101 Laminat specifikation Prepreg eksempel IPC-4101/25 14
IPC-4101 Laminat specifikation (Eksempel: Type 126) 15
IPC-4101 Laminat specifikation (Eksempel: Type 126) 16
Base material UL - approval Product safety may require that the base materials withstand tests performed by a product safety agency Ex. Underwriters Laboratories. Tests include: Flame retardance (UL 94) Printed board construction (UL 796) Base material (UL746). 17
ANSI/UL Type Materials may be classified based on generic material type and tests conducted in accordance with ANSI/UL 746E, "Polymeric Materials - Industrial Laminates, Filament Wound Tubing, Vulcanized Fibre, and Materials Used in Printed-Wiring Boards." ANSI/UL Type Resin Reinforcement Material X Phenolic Paper XP Phenolic Paper XPC Phenolic Paper XX Phenolic Paper XXP Phenolic Paper XXX Phenolic Paper XXXP Phenolic Paper XXXPC Phenolic Paper C Phenolic Cotton fabric CE Phenolic Cotton fabric L Phenolic Cotton fabric LE Phenolic Cotton fabric G-3 Phenolic Continuous-filament-woven glass fabric FR-4 Epoxy Continuous-filament-woven glass fabric G-5 Melamine Continuous-filament-woven glass fabric G-7 Silicone Continuous-filament-woven glass fabric G-9 Melamine Continuous-filament-woven glass fabric G-10 Epoxy Continuous-filament-woven glass fabric G-11 Epoxy Continuous-filament-woven glass fabric FR-1 Phenolic Paper FR-2 Phenolic Paper FR-3 Epoxy Paper FR-4 Epoxy Continuous-filament-woven glass fabric FR-5 Epoxy Continuous-filament-woven glass fabric CEM-1 Epoxy Continuous-filament-woven glass fabric surfaces, cellulose paper core CEM-3 Epoxy Continuous-filament-woven glass fabric surfaces, nonwoven glass core GPO-2 Polyester Random-laid material of glass fibers GPO-3 Polyester Random-laid material of glass fibers FR-6 Polyester Random-laid material of glass fibers GPY Polyimide Continuous-filament-woven glass fabric 18
Eksempel på uddrag af datablad for PCB (Isola 370 HR) 19
Eksempel på uddrag af oversigt for laminater (Isola) 20
Z-axis expansion CTE og Tg CTE Z Post Tg CTE Z Pre Tg Tg CTE xy Pre/Post Tg Copper expansion rate Temperature 21
Tg : 120 C CTE Z Pre Tg : 59 ppm/ C CTE Z Post Tg : 301 ppm/ C IPC-4101/21 (Standard laminate) 22
Tg : 168 C CTE Z Pre Tg : 64 ppm/ C CTE Z Post Tg : 253 ppm/ C IPC-4101/24 (High Tg laminate) 23
Tg : 258 C CTE Z Pre Tg : 62 ppm/ C CTE Z Post Tg : 184 ppm/ C IPC-4101/40 (Polyimide) 24
Polyimide PCB after stress test 288 C/10 sec. 25
Komponenter vs PCB CTE Z CTE kobber vs CTE laminat PCB build-up!! 26
Revner i fx keramiske kondensatorer 27
Specifikation Eksempel PCB data Single sided, double sided, multi layer PCB size L= mm / W= mm / tolerance Laminat tykkelse / tolerance Panelstørrelse Laminat / prepreg type / f.eks. IPC-4101/24 Tg>130 C, CTE post Tg Z <300ppm/ C Warp and twist Antal opvarmninger RoHS? 28
PCB pålidelighed 2013 Anvendelses miljø for produkt Analyser og definer slutbruger miljø Definer produkt krav Temperatur cycling Vibration Shock Design for manufacturing (DfM) Levetid Pålidelighed PCB specifikation Specificer klart og tydeligt!! IPC-A-600H-2010 IPC-6010 Serie Klassifikation!!!!! Type laminat Specificer klart og tydeligt!! IPC-4101 IPC-4202 Fokus på relevante elementer for pålidelighed!!! Godkendt producent 29