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Solving Microelectronic Obsolescence Through Die Reclamation, Re-Assembly & Test. A Proven Solution to Provide Management Support for Diminishing Manufacturing Sources and Material Shortages (DMSMS) or the adaptation of COTS product re-packaged for High Temp use. Overview.
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Solving Microelectronic Obsolescence Through Die Reclamation, Re-Assembly & Test A Proven Solution to Provide Management Support for Diminishing Manufacturing Sources and Material Shortages (DMSMS) or the adaptation of COTS product re-packaged for High Temp use.
Overview - Causes for Obsolete Components - How Force’s Die Extraction and Reassembly Service Supports “Parts Substitution” - Die Extraction and Reassembly Photos- Die Extraction Identical Quality and Improved Component Reliability - Die Extraction and Reassembly Benefits for Solving Component Obsolescence Issues - Summary - Contacts for Additional Information
Causes for Obsolete Components - Commercial system lifetimes are often 2 to 3 years. - Military system lifetimes are often 20-30 years. Many commercial components used in these systems are obsolete the day that the military systems are introduced and new commercial replacement ICs are already obsolete. - DoD Requirement to use Commercial Off The Shelf (COTS) solution wherever possible for military systems creates a demand that is not supported by commercial manufacturers - Heavy systems usage in ongoing conflicts increase wear-out ◦ Current inventory status of components used in a Legacy Avionics Program (27%) ◦ In 1996, obsolescence ranged from 10%-20% ◦ In 2005, obsolescence ranged from 20%-30% Source: i2 TACTRAC (03/28/05) Source: ARINC (06/28/06)
How Die Reclamation and Reassembly Service Supports “Part Substitution” - Remove die from plastic or ceramic packages without damaging the die in any manner - Die can then be reassembled into ANY available Ceramic or plastic packages (multiple package footprint varieties) - Create Multi-Chip Modules (Hybrids) from available components - Reassemble extracted die from any packages into hermetically sealed ceramic packages - Extends component (MTBF) reliability necessary for rugged and/or high temperature environments - Utilise commercially available IC’s in plastic packages to replicate discontinued ICs in ceramic packages ◦ Potential Service for Management of Diminishing Manufacturing Sources and Material Shortages (DMSMS)
Example of Bond Pads from an Extracted Die - Extraction Technology Has Been Used For Many Years in the Commercial Industry - Relies on Chemical and Mechanical Processes Which Are No More Aggressive Than Those Used During Wafer Fabrication - Clean bond pad and original gold ball bond - No inadvertent etching - Clean and uncontaminated die surface
SEM Photo of Re-bonded Ball Bond - Original Gold Wires are Removed at the Top of the Original Ball Bonds - Clean, Uncontaminated Gold Surface is Used for the New, High-Adhesion Wire Connection, or Compound Bond - New Gold Ball Formation is made to Original, Pristine Bond New Bond Original Bond
Ball Bond Qualification Data - The New Compound Bond Adheres Extremely Well to the Existing Original Gold Ball Bond has Identical Quality - Bond Pull Data is Indistinguishable for Pre and Post Die Extraction - Bond Pull Data of Re-Assembled Device Meets or Exceeds MIL-STD-883H Criteria Mean – 3 Sigma OEM Gold1 = 4.374 FTL Gold1 = 5.075gFTL Gold2 = 4.342 g MIL-STD-883H Lower Spec Limit = 3.0 g
Identical Quality - New Die Attach Adherence Identical to the New Package substrate/Cavity - Die Shear Data is Indistinguishable for Pre and Post Die Extraction (Typical 2X Standard Minimum MIL-STD-883H Die Shear Requirements) - As previously outlined new Bonding meets or exceeds Mil-Std-883H bond pull requirements
Improved Reliability • Accelerated Life Test Data (250C) Comparison Study - Semiconductor Reliability is Determined by the Arrhenius Equation: k = Ae -Ea/RT - A Popular Commercial Plastic IC Survived Only 6 Hours at 250C - Die from Those ICs which were Extracted and then Re- Assembled Into a Ceramic, Hermetic Package Survived 1500+ Hours at 250C with Materials and Processing Techniques • This is a 250X Lifetime Improvement Under Identical Condition • Ideal for High Temp applications.
Benefits of using Die Reclamation and Reassembly for IC •Process Scales Well for Volume Manufacturing - High Volume, Cost-Effective Extraction of Plastic Components has been Achieved - Functional, Extracted Die can be Re- assembled Using Low-Cost, High-Volume IC assembly Facilities - Added Benefit of Providing Inspected, genuine OCM Silicon To Eliminate the possibility of Counterfeit Devices
Benefits of using Die Reclamation and Reassembly for IC - Many more commercial component sources are available to fill need for obsolete microelectronics - Reduces engineering cost/time to locate/research obsolete components - Repackage plastic packages into otherwise unavailable ceramic components for military/Oli/Gas systems requiring rugged or high temperature/vibration component survivability • Added Benefit -Reduces potential need to buy full wafer for prototype Hybrid development if pre packaged commercial components are readily available for die extraction
Summary - Die Extraction and Re-Assembly is an Excellent Solution to IC Component obsolescence within Military Systems –Problem Solved - Military Systems have 20 –30 Year Life Cycles - Commercial ICs have 2 –3 Year Life Cycles - Increased COTS Component Content in Military Systems Exacerbates Obsolescence Issues - Die can be Removed from ANY Plastic or Ceramic Package Without Damaging the Die While Maintaining FULL-Functionality - Functional Extracted Die can be Re-Assembled Into ANY Plastic or Ceramic Package or Hybrid Module - This Technology has been Proven in the Commercial Industry - The Chemical and Mechanical Processes Used are no More Aggressive than those Utilised in Wafer Fabrication
Summary (Continued) - This Process can be Applied in High Volumes –Thousands to Millions of units - This Technique Insures Genuine OCM Silicon to Eliminate the Possibility of Counterfeiting - Quality Achieved is Identical or Better Than the original Plastic Packaged IC - Die Shear and Bond Pull Data are Identical for Pre Extraction and Re- Assembled IC’s - Accelerated Life Test Data of Plastic to Ceramic Shows Improved Product Lifetimes at High Temps - This Technology is a Proven Production Solution for Obsolescence Problems