Editing Deep Space 2 (section)

==New Technologies: High Impact and Low Temperature Electronics==
Custom electronics and batteries were designed for the Deep Space 2 probes to survive extremely high accelerations on impact with the surface of Mars and the cold temperatures that it would experience once in operation. Both the electronics and the custom cells were required to survive an impact on the order of 80,000 g and operational temperatures as low at -80&nbsp;°C.<ref>{{Cite conference |last1=Russell |first1=P.G. |last2=Carmen |first2=D. |last3=Marsh |first3=C. |last4=Reddy |first4=T.B. |last5=Bugga |first5=R. |last6=Deligiannis |first6=F. |last7=Frank |first7=H.A. |title=Development of a lithium/thionyl chloride battery for the Mars Microprobe Program |editor1=Harvey A Frank |editor2=Eddie T Seo |book-title=Thirteenth Annual Battery Conference on Applications and Advances  |year=1998 |pages=341–346 |publisher=IEEE |doi=10.1109/bcaa.1998.653891 |isbn=0-7803-4098-1 |s2cid=93199878}}</ref> Additionally, as much as a 30,000 g difference in acceleration was possible between the forebody and aftbody.<ref name=":3">{{Cite journal |last1=Rutnakumar |first1=B. |last2=Frank |first2=H. |last3=Kindler |first3=A. |last4=Deligiannis |first4=F. |last5=Davies |first5=E. |last6=Blakevoort |first6=J. |last7=Surampudi |first7=S. |date=1998-10-27 |title=DS2 Mars Microprobe Battery |url=https://trs.jpl.nasa.gov/handle/2014/20612 |website=Jet Propulsion Laboratory |language=en-US |hdl=2014/20612 |hdl-access=free}}</ref>

'''Batteries'''

Together with Yardney Technical Products, JPL designed a battery with two non-rechargeable 6-14V cells using Lithium-Thionyl Chloride (LI-SOCl2) chemistry to survive the expected conditions. The batteries were impact tested and also thermally cycled during development.<ref name=":3" />

'''Electronics Packaging'''

Due to the probe's form factor and the harsh survivability conditions, JPL used novel techniques to secure the onboard electronics. The techniques included chip-on-board (COB) technology to improve packing density.<ref name=":4">{{Cite conference |last1=Arakaki |first1=G. |last2=D'Agostino |first2=S. |date=March 1999 |title=New Millennium DS2 electronic packaging an advanced electronic packaging "sandbox" |book-title=1999 IEEE Aerospace Conference. Proceedings |id=Cat. No.99TH8403 |volume=2 |pages=205–213 |doi=10.1109/AERO.1999.793162 |bibcode=1999aero....2..205A |isbn=0-7803-5425-7 |s2cid=96712180}}</ref> It also used a 1-meter flexible umbilical cable to connect the forebody penetrator that would be displaced upon impact. Mechanical (non-functioning) models were impact tested before launch to determine if the structures would survive.<ref name=":4" />