| An example of a Seminar
Tutorial Outline
I. ESD
Basics, Materials and ESD Test Methods
A. Triboelectrification-Charge Separation
B. Humidity Effect on Charge Generation and Surface
Resistance
C. Triboelectric Series Relationship with Materials
1. Amount or Amplitude
of Charge
2. Charges on Material
Types at Low RH
3. Demonstration of Charge
Removal on Conductors and Insulators
II. Damage Models Relationship
to Materials and Packaging
A. HBM (Human Body Model)
B. MM (Machine Model)
C. CDM-FIM (Charge Device Model – Field
Induced Model)
1. Field Induced
Model Hazard Examples
2. Resistance Target
Ranges to Minimize Sparking
III. ESD Control in the Workplace
for ANSI/ESD S20.20-1999 & S541-2003
A. Storage Considerations
B. Transport Design Considerations outside
the ESD Protective Area
IV. ESD Monitoring in the Workplace
A. Wriststraps
B. Workstation
C. Ionization
D. Garments
V. Ionization
A. Types
1. AC
2. Pulse DC
3. Steady State
DC
4. Alpha Particle
5. X-Ray
B. Standard Test Methods to ANSI/STM3.1-2000
& ESD SP3.3-2000
C. Ionization Monitoring
D. Ionization Feedback Controllers
VI. Cleanrooms
A. What is a Cleanroom?
B. Classification or Types
1. ISO 14644-1
2. FED STD 209E
C. Class Definitions
D. Typical Priority of ESD Control
E. Garment Resistance Values
F. ESA (Electrostatic Attraction)
1. Bonding Force
2. Damage Types
VII. Material
Qualification Sequence, How to Qualify Material from Suppliers?
A. Corporate Qualification Manual
1. ESD Program
Manual
2. ANSI/ESD
S20.20-1999 & ESD S541-2003 Guidelines
3. ESD Industry
Packaging Methods
B. Review of Technical Data
1. Vendor
Specifications
2. In House
Testing
3. 3rd Party
Testing
C. Certification Process
1. Chemical
2. ESD (Electrical)
3. Physical
(ISTA…)
VII. What Should a Specification
Sheet Contain?
A. ESD Standard Reference
B. Results Found
C. ESDA Testing Methods
VIII. Review of ANSI/ESD S541-2003
and Resistance Classifications
A. Test Methods for Categories
B. Ranges for Acceptance
C. What to consider for inside and
outside the EPA
IX. Packaging Materials Selection
A. Products that Prevent Charge,
but do not Provide Static Shielding Barriers
1. Kraft
Boxes with Antistatic Foam
2. Static
Dissipative Totes
3. Open Static
Shielding Bags
4. Open Bin
Boxes
5. Overslotting
in Conductive Boxes
6. Poor Storage
Practices
7. Poor Designs
that Result in Poor Shielding
a. A Package that does not provide a barrier to Current Flow
8. Staples
(Stitching) for the Manufacturer Joint
X. Static Shielding Packaging Illustrations
with Examples
A. ESD Foil Type I Moisture Barrier Bags
B. Static Shielding Totes
C. Static Shielding Bags
D. Carbon Loaded Hinged Static Shielding
Boxes
E. Aluminum or Carbon Loaded Attaché
Cases
F. Static Shielding ESD Corrugated Paperboard
Boxes
G. Field Service
\XI. Value of Certification to
ANSI/ESD S541-2003 Requirements
A. ANSI/ESD STM11.11-2001 Example
for Products
B. Recommended Testing Protocols
for Verification of Materials & Packaging
XII. A Study of ESD Paperboard
A. Technologies and Their Structures
B. ESD Electrical Testing per Material
Types
C. Static Shielding Barrier Verification
with Results
D. Surface Resistance and Relative
Humidity
E. Charge Generation
F. Particle Generation
G. Repulpability
XIII. ESD
Control for MR Head Handling and Safeguards (Al Wallash, PhD)
A. Hard Disk Technology Overview
B. The ESD MR Head Safety Formula
C. How MR Heads are Damaged
D. Traditional ESD Control
Measures
E. Spark Free ESD Control (CDM
Safety)
F. Demonstration of ESD Discharges
for Hand Tools
G. Spark Free Approach to MR
Head Control
H. Spark Free Processing
I. Methods of Contact for MR
Heads to Conductive or Dissipative Surfaces
J. Solutions to Floating Devices
K. Metal vs. Ceramics or Static Dissipative
Substrates
L. Traditional and Extreme (MR Head)
Auditing Practices
M. Other Mechanisms for ESD Damage
N. Head Disk Breakdown
O. Ionization for MR Head Safety
XIV. ESD Preventative Measures
and Verification Techniques at the Machine
A. Pick and Place Issues
with
1. Charge by Induction
2. Contact Separation
B. Equipment
1. Material Verification
a. Suction Cups, Hoses, JEDEC Trays, Covers,
Plated Tracks Teflon Stops etc…
C. Continuity Checks
to Ground
D. Ionization Verification
Practices
1. Types Used
2. Application of Ionization in Equipment
3. Demonstration of Measurements
4. When and Why Ionization?
E. Static Voltage Detection
Techniques
F. Measuring and Tracking
ESD Events
XV. ESD POLYMERS
A. Overview of Types and Usage
B. Antistats for non cleanroom
use
1. Application(s)
2. Ranges of Conductivity
3. Target for Acceptance
C. Carbon Loaded Materials
1. Application(s)
2. Conductivity
3. Target for CDM Safety
D. Conductive Loaded
Polymers
1. Carbon Filled
2. Other Conductive Element Loading
E. Inherently Conductive
Polymers
1. Applications in the Cleanroom
2. Conductivity Ranges
a. Transparency with Conductivity
3. Target for CDM Safety
XVI. Conductivity Properties
A. Static Dissipative
B. Conductive
C. Insulative
XVII. Surface and Volume Resistance
Expectation for Polymer Type
A. Coating
1. Antistats
2. Carbon
3. Inherently Conductive Polymers
B. Loaded or Admixture
in a Master Batch
1. Antistats
2. Carbon
3. Inherently Conductive Polymers
XVIII. Thermoforming Considerations
for Achieving Excellent ESD Properties
A. Definition
B. Pros and
Cons
C. The Process
D. Design
Guidelines to Maximize Electrical Conductivity
1. Thinning Considerations for ESD Properties
2. Draft Angles for ESD Properties
3. Percentage of Elongation or Draw for ESD Properties
4. Negative and Positive Corners for ESD Properties
5. Product Features for ESD Properties
E. Considerations
inside and outside the Cleanroom
F. Cleaning
Mechanisms and Practices that Influence ESD Performance
G. One way
or Multiple Repeat Use Considerations for ESD Performance
XIX. ESD Testing Methods for Material
and Packaging Design Structures
A. ESD Measurement Tools
1. ESD Association Guidance for Instrument Ranges
B. ANSI/ESD STM11.11-2001
Surface Resistance Measurements
1. Resistance Classification per ANSI/ESD S541-2003
2. Instrument Description
a. Meter
b. Concentric Ring-Insulative Test Bed
c. Ranges of Measurements and ESDA Recommendation
1) >1.0E+06 ohms @ 100 volts
2) <1.0E+06 ohms @ 10 volts
3. Field Measurements with Illustrations and Ranges
a. Polystyrene
b. Polyurethane
c. Gel Packaging
4. In Chamber Measurements 12%+/-3% RH @ 730F+/-50F-48-72 Hrs
a. Planar Polymer
b. Inside the ESD Shielding Bag
c. PE Foam
C. ANSI/ESD STM11.12-2000
(Volume Resistance)
a. Measurement for Homogeneous or Loaded Products
b. Measurement on a Grounded Test Bed
D. ANSI/ESD
STM11.13-2004 (Two Point Measurements)
a. Verification Reference
b. Material Types for Non Planar Materials
1) Vacuum formed trays
2) Small Profile Measurements
3) Instrumentation
E.
ANSI/ESD DSTM11.14 (WIP) for Loose Fill
a. Illustration of Proposed Test Method
b. Instrumentation and Fixturing
F.
FLOORING (ANSI/ESD STM7.1-2001)
H.
WORKSTATION ANSI/ESD S4.1-1997 & STM4.2-1998
I. GARMENT PER ANSI/ESD STM2.1-1997
J.
SEATING PER ANSI/ESD STM12.1-1997
K.
WRIST STRAP MEASUREMENTS PER ANSI/ESD S1.1-1998
L.
ESD DS9.2-2003 FOR BOOTIES
M.
ANSI/ESD STM9.1- 2001 FOOTWEAR
N.
ANSI/ESD S6.1-1999: GROUNDING
O.
Use of Field Meters and Non Contact Volt Meters with Demonstration
a. Examples of Industry Practice
1) Work carriers
2) Profiles in Vacuum Formed
Trays
3) Packaging Practices
P. ESD Adv11.2-1995 Advisories for Faraday Cup Measurements
a. Planar Materials
b. Dip Tubes
c. Small Profile Materials
Q. Tribocharge Measurements Employed in the Industry and Problems
a. Incline Plane
b. NASA Test
R. Bellcore or ASTM D 5264-92 for Particle Generation
1. Sutherland Rub Tester with 4-lb weight
2. New Method to Measure Density of Particles
Removed
S. EIA 541 Decay Practice and Limitation with Demonstration
1. Problems with Complex Material Constructions
a. Not for Conductive
Materials
2. Use for Static Dissipative Planar Materials
3. Industry Practices
a. Non Planar Materials
1. Vacuum formed trays
2. Reels
3. Totes
T. Static Shielding Bag Tests
1. ANSI/ESD STM11.31-2001
U. Static Shielding Practices for ESD Polymers and Corrugated
1. Methods in Use and Problems
V. ANSI/ESD S8.1 Acceptable Symbols
1. On the Manufacturing Floor
2. Outside Packaging Shipment to Customers
W.
Summary of ESD Test Protocols per Material Categories
X. ANSI/ESD STM3.1-2000 Disk Drive
Ionization Measurements & Test Methods
XXI. Conclusion with Questions
and Answers
1. Reference Standards
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