Senior Package Substrate Design Engineer

3 weeks ago


Milpitas, United States ATR International Full time

The Package substrate design focuses on signal and power integrities analyses as well as routing analyses.



This position requires a broad knowledge of package technology and design. Successful candidates will have a deep understanding and experience in the following areas: high performance build-up substrates, flip chip assembly or 2.5D packaging.


Knowledge and experience in extracting/simulating package designs for Signal and Power integrities using tools such as HFSS, and/or ADS tools.


Education

  • Bachelor’s degree in Electrical Engineering, or other semiconductor packaging related discipline - MS is preferred
  • 8 to 10 years of experience in semiconductor packaging design, modeling, and simulations
  • Good experience with signal and power integrity tools (SI/PI tools) for package level extraction/simulation
  • Ability to work with Package Layout engineers
  • Strong presentation and communication skills


Preferred

  • Hands on package design; high-speed SI and PI, die and package decoupling caps optimizations, package and PCB SI and PI Characterizations, impedance verification, high frequency s-parameters extraction, Hspice model, package Hspice and RLC model extraction and designs
  • Hands on high-speed package and PCB design: high-speed Serdes 112 Gbps, PCIeX5 and 6, LPDDR4,5, Ethernet 25 GBps, power aware SI/PI analysis, up to 40 GHZ s-parameters extraction and verification
  • Packaging high-speed interconnections timing analyses, eye-diagram and jitter budgeting calculation following the LPDDR JEDEC spec, or other highs-speed frequency domain s-parameters extraction following the base Spec of high-speed interconnect
  • Hands on PCB design; SI, PI analyses, decoupling caps optimizations, SI and PI Characterization and extractions, impedance verification, s-parameters verifications with lab measurements, Hspice model, PCB RLC model extraction and designs
  • Routing analyst, chip bumps analyses and package ball analyses
  • Package material characterization frequency dependent model; skin effects, smoothness, roughness, dielectric loss and dielectric constant
  • PCB material characterization frequency dependent; routing degree of freedom
  • Time domain analyses and jitter budgeting for PCIe2/3/4/5, Serdes 112 GBps, Ethernet 25 Gbps, LPDDR4/5X MIPI, high-speed frequency signaling
  • Time domain analyses and budgeting model for LPDDR 3/4/5, LPDDRX 3/4/5/6
  • Bathtub curve and BER analyses of high speed signaling
  • DDR frequency and time domains model and jitter analyses and path findings to improve package and PCB layout and improve high-speed interconnections
  • Clock jitter analyses, routing, clock tree analyses
  • Simulating multi-physics electro-thermal analysis
  • Collateral packaging manufacturing and assembly rules
  • Chip and package Reliability analyses
  • Die+Pkg+pcb PDN model time and frequency, Impedance profile, AC droop, DC drop DC, etc.
  • IR drop, and CPM (chip power model) die model using Redhawk and other tolls



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