ESD指导标准.ppt

ESD Introduction
ESD ponent Introduction
Solution Provider
Application vs Products
LITEON ESD Products
Q&A
Presentation by Ricky Chien
Agent
ESD Introduction
What is ESD (Electrostatic Discharge)?
Table of Typical Generated Electrostatic Voltages
Examples of Static Generation Typical Voltage Levels
Means of Generation
10-25% RH
65-90% RH
Walking across carpet
35,000V
1,500V
Walking across vinyl tile
12,000V
250V
Worker at bench
6,000V
100V
Poly bag picked up from bench
20,000V
1,200V
Chair with urethane foam
18,000V
1,500V
Implications of ESD on IC industry
Major reliability threat in IC industry :
-Cause of approximately 1/3 of IC failures
ESD protection is very challenging against rapidly changing technologies
Standard model is used to characterize ESD :
- Human Body Model (HBM)
- Machine Model (MM)
- Charged Device Model (CDM)
ESD control is indispensable throughout devices’ life :
- Eliminating static charges from the workplaces
- Proper handling from manufacturing, shipping and field handling
- On-chip protection (clamp input voltage and bypass ESD current)
HUMAN BODY MODEL (HBM)
MACHINE MODEL (MM)
Electrostatic Discharge (ESD) IEC 61000-4-2
ESD REQUIREMENTS (.)
Human Body Model
+/- 2 kV Required by most customers Waivers given at 1 KV in some cases
+/- 4 kV Delco (Auto Manufacturer)
+/- 8 kV On Special Automotive Pins (Power Outputs)
Machine Model
No Standard for reliable testing Waivers given to 100 V in some cases
ESD Regulation