What counts

Anniversary webinar: what counts
Webinar March 01, 2016, 11:00 a.m. CET
01.03.2016
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Speaker: Andreas Schilpp
www.we-online.com
Approach to the topic
01.03.2016
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Approach to the topic
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value chain
PCP product creation process
Design Chain
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Approach to the topic
01.03.2016
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Design Chain of the development of electronic equipment
source: ZVEI
01.03.2016
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Design Chain of the development of electronic equipment
Project management
01.03.2016
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Design Chain of the development of electronic equipment
Project management
01.03.2016
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www.we-online.com
24 points which might be important for your succes
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Ongoing Information Aquisition and Training about Technologies,
Components, Tools etc.
Fairs, Webinars, Design Conferences, Design Guides, technical articles, Internet
01.03.2016
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www.we-online.com
24 points which might be important for your succes
 Information source Designguides
01.03.2016
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www.we-online.com
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Product idea, Concept and Technology Choice
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Target market, ramp-up
Modular ApproachIntegrated Approach
Availability, 2nd source
01.03.2016
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Modular Approach  Integrated Approach
01.03.2016
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24 points which might be important for your succes
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Functional Specifications for Mechanics & Elektronics & Software, Size
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Requirements for the PCB derived from the System
Start-up may be only „DIN-A4 page“  high risk of late engineering changes!
01.03.2016
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Standards und Legal Regulations
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Impact from the System onto the PCB
01.03.2016
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Mission profile, Reliability Requirements, Life Span
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Impact on Components and PCB
01.03.2016
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www.we-online.com
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Design specifikation, Mechatronics und Miniaturisation
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Thickness of the PCB – Definitions and Tolerances
Approach for Miniaturisation of the PCB
01.03.2016
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different Definitions of PCB thicknesses
Tolerances:
typical 10% after
Lamination
01.03.2016
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Project plan
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Estimation of needed Time for Layout and Production of the PCB bare board
01.03.2016
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www.we-online.com
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Mechanics, Assembly and Fastening of the PCB, Shock and Vibration
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Options of Fixation
01.03.2016
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Mechanics: Fastening of a PCB – Shock and Vibration
source: Projekt Hotel
Fixing with 9 screws:
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Mechanics: Fastening of a PCB – Shock and Vibration
NO fixation of one rigid area
… leads to resonance
and destruction even
with Rigid-Flex!
01.03.2016
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www.we-online.com
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EMC: interfaces
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Proof of Concept regarding emission and interference (less is better)
01.03.2016
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www.we-online.com
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Signal integrity
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Simulation, Documentation (also for a „simple“ Multilayer)
01.03.2016
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www.we-online.com
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Ampacity
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According to IPC-2152
Options Thick copper technology  partial Thick copper technology
01.03.2016
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www.we-online.com
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Thermal Design
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Simulation based on Gerber data, Adaption of PCB Technology
01.03.2016
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Simulation thermal Design - Variants
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Simulation heat dissipation of Polymer Resistors
01.03.2016
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System cost
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Ball park quotes, System cost estimations
01.03.2016
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www.we-online.com
System cost comparison: modular - integrated
€ 57,40
€ 94,00
01.03.2016
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System cost comparison: modular - integrated
rigid pcbs
with cables and connectors
Semiflexible pcb

balance sheet
100 pcs
1.000 pcs
100 pcs
1.000 pcs
Remarks
a) pcb price
58,50 €
40,50 €
55,90 €
45,50 €
pcbs from Europe
b) FFC cables, ZIF connectors
30,00 €
13,00 €
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EMS Sweden
c) for this SMD assembly AOI
2,00 €
1,50 €
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EMS Sweden
d) final assembly
2,00 €
1,50 €
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EMS Sweden
e) final test
1,50 €
1,00 €
1,50 €
1,00 €
EMS Sweden
94,00 €
57,50 €
57,40 €
46,50 €
-39%
-19%
sum of BoM and processing
cost saving
additional cost factors:
5 pcbs
1 pcb
17 components + 5 stencils
1 component + 2 stencils
h) assembly expenditure
5x
1x
i) test expenditure
6x
1x
k) stock / logistics
22 positions
3 positions
312 ZIF-contacts + 312 solder joints
integrated Semiflex connection
f) design for
g) inventory control
l) Pin- and solder connections
01.03.2016
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Reliability
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Circuit diagram, Choice of Components
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Impact on PCB Technology!
01.03.2016
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Component with highest density determins PCB technology
Excerpts out of our HDI Designguide:
01.03.2016
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Option: printed Components
01.03.2016
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Material Choice for the PCB bare board
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Requirements derived from the System
01.03.2016
page 33
www.we-online.com
Recommendations for the usage of base material FR4
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layer count
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4
2
Halogen-free FR4
TG 150°C
higher copper thicknesses
filled buried vias
more than 3 solder processes
page 34
with fillers
Standard FR4
TG 135°C
up to 3
lead-free solder
processes
1
01.03.2016
Halogen-free FR4
TG 170°C
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board thickness [mm]
4
www.we-online.com
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Qualification und Test Strategy
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Qualification of the pcb technology and ensuring of the serial quality
01.03.2016
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Traceability
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Content and area needed for markings
01.03.2016
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Marking: Must, may and Should
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Must: Producer, Datecode
Should: Lot number
UL-Marking
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Must: compay name or file number
Must: UL-Type designation
May: Factory identification
May: UR-Logo
May: burning test classification
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PCB Layout
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DfM, Design Rules, Annular Ring
01.03.2016
page 38
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Why do we need annular rings?
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Layout / Screen:
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Real life
01.03.2016
page 39
IPC-A-600H:
www.we-online.com
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Data post processing and Design of delivery panel
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Recommendation: Format 3.4 metric
01.03.2016
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Order documents for the pcb bare board
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Gerber data, stack-up plan, drawings, Spezifications
01.03.2016
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Production PCB bare board
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Rush service, Logistics solutions of Würth Elektronik, Shop WEdirekt
01.03.2016
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www.we-online.com
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Delivery documents
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from delivery note to PPAP (Production Part Approval Process)
01.03.2016
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Further processing of the PCBs
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Download „Drying recommendations“
01.03.2016
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Panel separation
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Which capabilities does your production have? Side cutter ?
01.03.2016
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Panel Separation - examples
several processes are in use:
1.Tab remover (i.e. Hektor) for
cutting single tabs
2.cutting knife for V-cut panels
(Rolling or fixed knifes)
3.Laser up to 0,8mm pcb thickness
4.Routing (expensive but good!)
5.Stamping or Sawing (for big
volumes)
6.Cracking of predetermined
breaking points
01.03.2016
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Ritznutzen / V-cut panels
Entfernung von Stegen / tab removal
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Panel Separation by stamping - Transport
Quelle: Fa. acd

01.03.2016
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Summary
the development of an electronic system
 could be very complex
 needs a lot of different technical disciplines
 needs networking and communication very much
 WE like to support you in a project
 You are already in a redesign or improvement loop?
We are pleased to help you!
 Please contact us as soon as possible!
01.03.2016
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Thank you very much for your attention!
this Webinar was presented by
01.03.2016
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