217Plus TM Integrated Circuit Failure Rate Models

Transcription

1 T h I AC 27Plu s T M i n t g at d c i c u i t a n d i n d u c to Fa i lu at M o d l s David Nicholls, IAC (Quantion Solutions Incoatd) In a pvious issu o th IAC Jounal [nc ], w povidd a highlvl intoduction to th 27Plus TM componnt ailu at pdiction modls, and in th last dition [nc 2] w psntd th 27Plus TM capacito and diod ailu at modls. In this issu, w psnt th Intgatd Cicuit and Inducto componnt modls in thi ntity. A i xampl will povidd at th nd o th aticl. 27Plus TM Intgatd Cicuit Failu at Modls This sction contains modls o oth nonhmtic and hmtically sald intgatd cicuits. Th om o th two modls is asically th sam (dincs will highlightd), ut th tal lookup paamt valus di. p Failu at multipli o tmpatu, ating: Ea. d 867 T T 273 Activation ngy, ating. Function o intgatd cicuit typ (s Tal ). Th junction tmpatu is aov th amint ating tmpatu ( ). Th junction tmpatu is tho. Th can dtmind in sval ways: Dault tmpatu is (s Tal ) Actual (masud) tmpatu is, i known np Th ailu at quation o nonhmtic intgatd cicuits [nc 3] is: m m m m m m P G _ OB O EB N HT TCB i SJB SJ IND wh, Pdictd ailu at, ailus p million calnda hous liaility gowth ailu at multipli: _ G ^Y 993hi Gowth constant. Function o intgatd cicuit typ (s Tal ) Bas ailu at, ating. Function o intgatd cicuit typ (s Tal ) p O Failu at multipli o duty cycl, ating: O Constant. Function o intgatd cicuit typ (s Tal ) Θ JA * P wh Θ JA is th junctiontoamint thmal impdanc and P is th pow dissipatd y th intgatd cicuit Θ JC * P wh Θ JC is th junctiontocas thmal impdanc and P is th pow dissipatd y th intgatd cicuit I this tion is usd, thn should placd y T C, th componnt cas tmpatu, in th quation o p Bas ailu at, nvionmntal (s Tal ) THE JOUNAL OF THE ELIABILITY INFOMATION ANALYSIS CENTE THID QUATE 27

2 l N Failu at multipli, duty cycl nonating: N non non Constant. Function o intgatd cicuit typ (s Tal ) l HT Failu at multipli, tmpatu humidity: HT Eanon 867 A c H m 5 Activation ngy, nonating. Function o intgatd cicuit typ (s Tal ) Bas ailu at, tmpatu cycling (s Tal ) p Failu at multipli, cycling at: Constant. Function o intgatd cicuit typ (s Tal ) p Failu at multipli, dlta tmpatu: p Constant. Function o intgatd cicuit typ (s Tal ) 4 3 Bas ailu at, sold joint (s Tal ) p SJ Failu at multipli, sold joint dlta tmpatu: SJ d n Failu at, lctical ovstss (s Tal ) NOTE: Envionmnttyp and quipmntdpndnt dault valus o,, T and w pviously psntd in nc, wh, Duty cycl (th pcnt o calnda tim that th systm in which th componnt is ating is in an ational stat) Amint tmpatu, ating (in dgs C) T Amint tmpatu, nonating (in dgs C) Cycling at (th num o pow cycls pya to which th systm is xposd). In this cas, it is assumd that th systm tansitions om a nonating nvionmnt to an ating nvionmnt at th sam tim that th pow is applid. Tal : Intgatd Cicuit, Nonhmtic Paamts Pat Typ non Digital, Nonhmtic Lina, Nonhmtic Mmoy/Micocsso, Nonhmtic continud on nxt pag 23

3 th IAC 27Plus TM intgatd cicuit and inducto Failu at Modls continud om pag 23 Th ailu at quation o hmtic intgatd cicuits [nc 3] is: m m m m m m P G ` OB O EB N TE TCB j SJB SJ IND Wh all vaials a as dind o th nonhmtic intgatd cicuit modl, xcpt: p TE placs p HT in th nonating ailu at calculation, and p TE is calculatd as: TE wh Eanon. 867 Th quation o p is: As dind aov p 4. 8 All lookup tal valus a om Tal 2: 27Plus TM Inducto Failu at Modl Th ailu at quation o inductos [nc 3] is: m `m m m j m P G OB O EB N TE TCB IND Pdictd ailu at, ailus p million calnda hous liaility gowth ailu at multipli: G _ ^Y 993hi Gowth constant. Function o inducto typ (s Tal 3). Bas ailu at, ating (s Tal 3) p O Failu at multipli o duty cycl, ating: O Constant. Function o inducto typ (s Tal 3) p Failu at multipli o tmpatu, ating: Ea. 867 T Activation ngy, ating. Function o inducto typ (s Tal 3) Th junction tmpatu is aov th amint ating tmpatu ( ). Th junction tmpatu is, tho,. Th can calculatd in sval ways: Dault tmpatu is (s Tal 3) Actual tmpatu is, i known Bas ailu at, nvionmntal (s Tal 3) p N Failu at multipli, duty cycl nonating: N non non Constant. Function o inducto typ (s Tal 3) Tal 2: Intgatd Cicuit, Hmtic Paamts Pat Typ non Digital, Hmtic Lina, Hmtic Mmoy/Micocsso, Hmtic THE JOUNAL OF THE ELIABILITY INFOMATION ANALYSIS CENTE THID QUATE 27

4 Tal 3: Inducto Paamts Pat Typ non Chok Gnal p TE Failu at multipli, tmpatu nvionmnt: TE Eanon. 867 Activation ngy, nonating Function o inducto typ (s Tal 3) Bas ailu at, tmpatu cycling (s Tal 3) p Failu at multipli, cycling at: Constant. Function o inducto typ (s Tal 3) p Failu at multipli, dlta tmpatu: p Constant. Function o inducto typ (s Tal 3) Failu at, inducd (s Tal 3) As with th Intgatd Cicuit modls, th nvionmnttyp and quipmntdpndnt dault valus o,, T and w pviously psntd in nc. Exampl Calculation What is th pdictd ailu at o a digital, nonhmtic intgatd cicuit manuactud in 26. Th IC ats in a Gound, Moil, Havywhld vhicl with an assumd ating tmpatu o 55 C, a domant tmpatu o 4 C and a lativ humidity o 4%. Th actual tmpatu is o th dvic is not known. Th ating poil o th quipmnt is typical o militay gound quipmnt, with a duty cycl o 45% and a cycling at o 263 cycls p ya. 2 Th ailu at quation o a nonhmtic intgatd cicuit [nc 3] is: m m m m m m P G ` OB O EB N HT TCB j SJB SJ IND wh, ( (Y993) (om Tal ) and Y 26 (givn) 7 (om Tal ) O (givn as 45%) 28 (om Tal ) Ea 867 T (om Tal ) 55 (givn) 3 (om Tal ) 385 (om Tal ) N HT non Eanon (givn as 45%) non 72 (om Tal ) H c m (om Tal ) T 4 (givn) H 4% (givn) 249 (om Tal ) (givn) 4846 (om Tal ) continud on nxt pag 25

5 th IAC 27Plus TM intgatd cicuit and inducto Failu at Modls continud om pag 25 p (givn) 3 (om Tal ) T 4 (givn) 26.5 (om Tal ) 485 (om Tal ) SJ d n (givn) 3 (om Tal ) T 4 (givn) 263 (om Tal ). 589 m P 7^ h ^ h ^ h ^ h ^ h ^ h ^ h ^ h ^ ha ^ 485h ^. 589h ^ 263h 7976 / 6 calnda hous Nxt Issu Th nxt issu o th IAC Jounal (4th Quat 27) will psnt th 27Plus TM tansom and tolctonic dvics ailu at modls in mo dtail. ncs An Intoduction to th IAC 27Plus TM Componnt Failu at Modls, Jounal o th liaility Inomation Analysis Cnt, Fist Quat 27, availal o PDF download om th IAC at Th 27Plus TM Capacito and Diod Failu at Modls, Jounal o th liaility Inomation Analysis Cnt, Scond Quat 27, availal o PDF download om th IAC at Dnson, W.K., Handook o 27PlusTM liaility Pdiction Modls, liaility Inomation Analysis Cnt (IAC), 26 May 26, ISBN X An Ovviw o th 27Plus TM Systm liaility Assssmnt Mthodology, Jounal o th liaility Inomation Analysis Cnt, Fouth Quat 26, availal o PDF download om th IAC at THE JOUNAL OF THE ELIABILITY INFOMATION ANALYSIS CENTE THID QUATE 27