【正文】 m e a n M T B F m e a n M T B F m e a nf i t h o u r s y e a r st o t a l 3 . 5 6 3 2 8 0 . 6 9 8 3 2 , 0T u : 4 0 176。 C m e a n c o m p o n e n t a m b i e n t t e m p e r a t u r eZ f : C o n t i n u o u s o p e r a t i o n 8 7 6 0 h p e r y e a r1 f i t e q u a l s o n e f a i l u r e p e r 1 0 ^ 9 c o m p o n e n t h o u r sF a i l u r e r a t e s f o r p o s i t i o n s o f t h e Q u a l i t y l i s t :J u n c t i o n S N 2 9 5 0 0 M e a n J u n c t i o n F R s i n g l e F R t o t a lQ u a n t . C o m p o n e n t T y p e C o m p l e x i t y T e m p . r e f S t r e s s r e f F R r e f πT πS c u r c u i t T e m p .o r P i n c o u n t 176。C f i t 1 = r e f s t r e s s 176。C f i t f i t6 I C l o g i c 1 / 1 0 g 45 π T = 1 4 0 , 8 5 1 41 3 , 4 0 7 2 0 , 46 I C a n a l o g 1 / 3 0 t 55 π T = 1 。V u v = 0 ,7 3 0 , 7 7 1 4 8 , 6 2 , 3 2 2 1 3 , 96 I C T e l e c o m 1 0 0 / 1 K g 55 20 0 , 6 7 T e i = 5 45 1 3 , 4 8 0 , 41 E E P R O M 1 6 K b 55 π T = 1 30 0 , 5 5 T e i = 5 45 1 6 , 6 3 8 1 6 , 61 E P L D 5 K g 80 60 0 , 2 9 T e i = 1 0 50 1 7 , 6 8 1 1 7 , 7278 R e s i s t o r M e t a l f i l m 55 π T = 1 0 , 2 55 0 , 2 5 5 , 62 N T C T e r m i s t o r 40 π T = 1 3 40 3 6 , 0214 C a p a c i t o r C e r a m i c X 7 R 40 π T = 1 。V u v = 0 ,5 2 0 , 4 5 V u e = . 3 40 0 , 8 9 9 1 9 2 , 48 H F I n d u c t o r 55 5 55 5 4 0 , 010 I n d u c t o r f o r E M C 60 1 , 5 60 1 , 5 1 5 , 012 U n i v e r s a l D i o d e 55 1 55 1 1 2 , 010 U n i v e r s a l T r a n s i s t o r 55 π T = 1 。V u v = 0 ,5 5 55 5 5 0 , 05 P N P T r a n s i s t o r A r r a y 2 v 55 π T = 1 。V u v = 0 ,5 15 0 , 8 2 0 , 9 9 T e i = 1 0 , U b = 1 5 50 1 2 , 2 1 1 6 1 , 15 N C h a n n e l M O S F E T 55 π T = 1 。V u v = 0 ,5 5 2 , 7 8 0 , 9 9 N m w = 1 0 0 0 , U b = 5 80 1 3 , 8 1 2 6 9 , 11 L E D 45 V i v = 0 , 5 2 1 45 2 2 , 05 D u a l O p t o c o u p l e r 2 v 55 π T = 1 15 0 , 7 6 T e i = 1 0 50 2 2 , 8 1 3 1 1 4 , 1| | | | | | | | | | | |2 C o n n e c t o r m u l t i b l e c o n t . P i n 7 2 v 40 0 , 0 5 40 3 , 6 7 , 23 C o n n e c t o r s i n g l e c o n t . p i n 5 0 v 40 0 , 5 V f i = 4 0 40 20 6 0 , 02 C o n n e c t o r h i g h e l e c t r . l o a d e d 1 v 40 1 40 1 2 , 06 4 2 6 * ) S o l d e r i n g p o i n t m a c h i n e 40 0 , 0 3 40 0 , 0 3 1 9 2 , 8* ) a l l t h e p i n o f q u a n t i t y o f c o m p o n e n t s p i n c o u n t a r e a d d e d S u m 3 . 5 6 3V u v = V o l t a g e r a t i o r e f . 。 V u e = V o l t a g e r a t i o a c t . 。 U b v = S u p p l y V o l t a g e r e f . U b = S u p p l y V o l t a g e 。 V i v = C u r r e n t r a t i o 。 T e i = s e l f h e a t i n g J u n c t i o n 。 N m w = P o w e r c o n s u m p t i o n 。 V f i = U s e d E l e m e n t s o f d e v i c eC o m p o n e n tR e f e r e n c e s f r o m S N 2 9 5 0 0 / I E C 6 1 7 0 9 T y p i c a l s t r e s s p e r c o m p o n e n t d a t ao r c i r c u i t d e p e n d a n tR e s u l t sInformation and Communication Networks 9,82 5,46 1,08 7,64 10,91 6,00 0,00 8,00 Siemens Reliability Process Overview Optical Components: ? EDFA ? VOA ? GTC ? Passives Negotiations with suppliers: ? Modelling ? Field experience ? Supplier parison Electrical Components: ? Resistors ? Capacitors ? Transistors ? ICs ? etc. Standards: ? SN 29500 ? IEC 61709 Mechanical Components: ? Connectors ? Boards ? etc. Standards: ? SN 29500 ? IEC 61709 Card FIT Rate ? Feedback from Field Return Rate Information and Communication Networks 9,82 5,46 1,08 7,64 10,91 6,00 0,00 8,00 Reliability Calculation of OLI Standard Assumptions New Calculation Components with negligible power dissipation: 40176。 C temperature Calculation done for 40176。 C (approx. 30176。 C environment) Components with higher power dissipation: typ. power dissipation acc. data sheet or 75% max. load, if no typical value given Actual estimated power dissipation used For ponents with multiple units in a package: all units are used Only units considered, which are used Updated FIT rates for optical ponents used Information and Communication Networks 9,82 5,46 1,08 7,64 10,91 6,00 0,00 8,00 FIT Rates Improvements FIT (previous) FIT (today) RR (previous) [%/yr] RR (today) [%/yr] Standard OLI S42024L5087C423 10700 8537* Basic OLI S42024L5087C463 9600 5205 Calculation with respect to following conditions: ? 80 ch load ? 40 deg C board temperature * New OLI type in will reduce FIT rate further by approx. 15 % FIT decreases by additional 15 % at 30 deg C (board temp.)