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Rich Katz, Grunt Engineer NASA Office of Logic Design

RTAX-S FPGA DPA’s. Rich Katz, Grunt Engineer NASA Office of Logic Design. Purpose. First early DPA look at RTAX-S FPGAs Die Types RTAX250S RTAX1000S RTAX2000S Packages Flat packs only Early missions flying flat packs This presentation will present highlights from the DPA reports.

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Rich Katz, Grunt Engineer NASA Office of Logic Design

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  1. RTAX-S FPGA DPA’s Rich Katz, Grunt Engineer NASA Office of Logic Design

  2. Purpose • First early DPA look at RTAX-S FPGAs • Die Types • RTAX250S • RTAX1000S • RTAX2000S • Packages • Flat packs only • Early missions flying flat packs • This presentation will present highlights from the DPA reports. • More info at: http://klabs.org/richcontent/fpga_content/pages/notes/fpga_reliability.htm#dpa_rtax-s

  3. Summary Summary:  Six RTAX-S FPGAs were sent to Hi-Rel Laboratories for a destructive physical analysis (DPA). The testing was performed in accordance with GSFC S-311-M-70, MIL-STD-1580B REQ. 16.1, MIL-STD-883 Method 5009, and applicable military standards. Part Number: RTAX250S RTAX1000S RTAX2000S Package: CQ208E CQ352 CQ352 Grade: E B E Lot Date Code: 0507 0444 0509 Wafer Date Code: D1H381 D1GAH1 D1KHN1 S/N: 72529, 72589 61287 73802, 73857

  4. RTAX250S Note: Ceramic bottom, no exposed heat sink.

  5. RTAX250S

  6. RTAX1000S Note: Ceramic bottom, no exposed heat sink.

  7. RTAX2000S Note: Ceramic bottom, no exposed heat sink.

  8. RTAX2000S

  9. Analyses Performed • External Visual Inspection • Prohibited Materials Analysis of the External Surfaces • Radiographic Examination • Particle Impact Noise Detection (PIND) • Hermeticity Testing • Residual Gas Analysis (RGA) • Internal Visual Inspection of the Delidded Devices • Prohibited Materials Analysis of the Internal Surfaces • Bond Pull Testing • Die Shear Testing

  10. Analyses Not Performed Scanning Electron Microscopy (SEM) Inspection of the metallization was not performed in accordance with MIL-STD-883F, Method 2018, paragraph 1. The metallization was of CMP planar oxide construction.

  11. Anomalies • RTAX1000S Samples • Low bond pull strength • Bond pull failures • Additional samples from multiple lots now in process of being analyzed.

  12. RTAX1000S Anomaly

  13. RTAX1000S Anomaly

  14. RTAX1000S Anomaly

  15. RTAX1000S Anomaly

  16. Additional Bond Pull Samples RTAX1000S Lot Date/Code 0546 Three samples, all passed.

  17. SEM Sample, LDC 0546 Sample 1 of 3

  18. SEM Sample, LDC 0546 Sample 2 of 3

  19. SEM Sample, LDC 0546 Sample 3 of 3

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