SBOA344A July   2019  – September 2022 LMX2694-SEP , SN55HVD233-SEP , SN65C1168E-SEP , TL7700-SEP , TLV1704-SEP , TPS73801-SEP , TPS7H1111-SEP , TPS7H1210-SEP , TPS7H2140-SEP , TPS7H2201-SEP , TPS7H2211-SEP , TPS7H2221-SEP , TPS7H3302-SEP , TPS7H4003-SEP , TPS7H4010-SEP , TPS7H5005-SEP , TPS7H5006-SEP , TPS7H5007-SEP , TPS7H5008-SEP

 

  1.   Abstract
  2.   Trademarks
  3. 1 Radiation Challenges
  4. 2 Temperature Range
  5. 3 Tin Whiskers
  6. 4 Cu Wire Risks
  7. 5 Plastic Outgassing and Moisture Absorption
  8. 6 Harsh Environment Qualification
  9. 7 Multiple Manufacturing Sites
  10. 8 Long Life Cycles
  11. 9 VID - Vendor Item Drawing
  12. 10Conclusions
  13. 11Revision History

6 Harsh Environment Qualification

COTs and automotive products are not tested or qualified for the harsh conditions of space flight, such as the high G-forces during a launch or the temperature cycling to the temperature extremes experienced several times per day in a LEO mission.

Every TI Space EP assembly lot goes through an extended qualification. Assembly lot qualification tests include the highly accelerated stress test (HAST) at 130°C and 85% humidity for 192 hours, temperature cycling between –65°C to +150°C for 500 cycles and the moisture level sensitivity (MSL) preconditioning test followed by acoustic microscopy (CSAM). Sample inspections to ensure proper packaging include visual inspection after wire bonding prior to the mold process and visual and X-ray inspections post packaging.

After packaging, every Space EP unit receives temperature cycling (20 cycles) or a similar reflow stress prior to electrical testing. This extended qualification is to ensure the performance and reliability of the device in the harsh environments of space going beyond the qualification of typical commercial and automotive components.