surface mount sense resistors oars, oars-xp, oarsz series flexible leads for thermal expansion open-air design reduces pcb heatng values down to 1milliohm element tcr 20ppm/c zero-ohm 65a jumper version su rf a c e m o u n t se n s e r e s i s t o r s a o r s , o a r s - x p , o a r s z s e r i e s f l e x i b l e l e a d s f o r t h e r m a l e x p a n s i o n o p e n - a i r d e s i g n r e d u c e s p c b h e a t i n g v a l u e s d o w n t o 1 m e l e m e n t t c r 2 0 p p m / o c z e r o - o h m 6 5 a j u m p e r v e r s i o n r o h s c o m p l i a n t e l e c t r i c a l d a t a o a r s 1/3 o a r s - x p po w e r ra t i n g a t 2 5 o c w a t t s 2 4 po w e r ra t i n g a t 85o c w a t t s 1 2 r e s i s t a n ce rang e o h m s r00 2 t o r05 0 r00 1 t o r02 5 r e s i s t a n ce t o l e ra n ce % r00 2 : 5 , > r00 2 : 1 , 5 st and a rd va l u e s (en q u i r e f o r u n l i s t e d v a l u e s ) mi l l i o h m s 2 , 3 , 4 , 5 , 1 0 , 1 5 , 2 0 , 2 2 , 2 5 , 3 0 , 4 0 , 5 0 1 , 2 , 2 . 5 , 5 , 7 . 5 , 1 0 , 2 0 , 2 5 i n d u ct a n ce n h < 1 0 a m b i e n t t e m p e ra t u re rang e c -5 5 t o + 1 6 0 o a r s - 1 z c o m m e n t s c u rre n t ra t i n g a t 2 5 o c a m p s 6 5 c u rre n t ra t i n g a t 8 5 o c a m p s 4 6 a m b i e n t t e m p e ra t u re rang e c -5 5 t o + 1 6 0 z e ro -o h m j u m p e r p h y s i c a l d a t a d i m e n s i o n s (mm) a n d re co mm ende d s o l d e r pad s t yp e l h t d w a n o m . b n o m . c n o m . d n o m . o a r s1/3 > r00 3 , o a r s-1 z 3 . 0 5 0 . 7 6 o a r s1/3 - r00 3 1 1 . 1 8 0 . 3 8 4 . 8 3 0 . 7 6 3 . 1 8 0 . 3 8 4 . 0 7 o a r s1/3 - r00 2 1 1 . 5 6 0 . 3 8 3 . 5 1 0 . 7 6 4 . 7 0 . 7 6 3 . 5 6 0 . 3 8 4 . 4 5 9 . 3 7 3 . 0 7 o a r s-xp 1 0 . 7 t o 1 2 . 0 * 2 . 2 8 t o 4 . 5 7 * 2 . 3 6 0 . 2 5 4 . 8 3 0 . 7 6 6 . 3 5 0 . 3 8 7 . 2 4 9 . 5 8 3 . 1 8 3 . 2 3 * d e p e n d e n t o n o h m i c v a l u e a b d c c 07.11 e l ect ri cal d a t a o a r s 1 o a r s 3 o a r s - x p p o w e r r a ti ng a t 7 0 c a m b i ent , o r 140 c t e r m i nal t e m per a t u r e wa tts 2 3 5 re s i s tanc e r ang e ohm s r002 to r 050 r002 to r 015 r001 to r 025 re s i s tanc e t o l e r anc e % r002: 5 , > r0 02: 1 , 5 s ta n dar d v a l u e s ( e nqui r e f o r unl i s t e d v a l ues ) m illiohm s 2 , 3 , 4 , 5 , 10, 15, 2 0 , 22, 2 5 , 3 0 , 4 0 , 5 0 2 , 3 , 4 , 5 , 10, 1 5 induc ta n c e n h < 1 0 a m b i ent te m per a tu r e r a n g e c - 55 to + 1 6 0 o a r s - 1 z c omme nt s cu rrent r a t i n g a t 2 5 c a m b i e n t a m p s 6 5 z e r o- ohm j u m per max r e s i d ual r e s i s tanc e m illiohm s 0 . 3 a m b i ent te m per a tu r e r a n g e c - 55 to + 1 6 0 t e m p e r a t u r e d e r a t i n g oa rs z oa rs 1 /3/ x p n o t e : fo r o ar s1 / 3 / x p t h i s r e l a t e s t o p o w e r ra t i ng, f o r o ar s z i t re l a t e s t o c u rr ent r a t i n g . 1, 2, 2.5, 5, 7.5, 12.5, 10, 20, 25 su rf a c e m o u n t se n s e r e s i s t o r s a o r s , o a r s - x p , o a r s z s e r i e s f l e x i b l e l e a d s f o r t h e r m a l e x p a n s i o n o p e n - a i r d e s i g n r e d u c e s p c b h e a t i n g v a l u e s d o w n t o 1 m e l e m e n t t c r 2 0 p p m / o c z e r o - o h m 6 5 a j u m p e r v e r s i o n r o h s c o m p l i a n t e l e c t r i c a l d a t a o a r s 1/3 o a r s - x p po w e r ra t i n g a t 2 5 o c w a t t s 2 4 po w e r ra t i n g a t 85o c w a t t s 1 2 r e s i s t a n ce rang e o h m s r00 2 t o r05 0 r00 1 t o r02 5 r e s i s t a n ce t o l e ra n ce % r00 2 : 5 , > r00 2 : 1 , 5 st and a rd va l u e s (en q u i r e f o r u n l i s t e d v a l u e s ) mi l l i o h m s 2 , 3 , 4 , 5 , 1 0 , 1 5 , 2 0 , 2 2 , 2 5 , 3 0 , 4 0 , 5 0 1 , 2 , 2 . 5 , 5 , 7 . 5 , 1 0 , 2 0 , 2 5 i n d u ct a n ce n h < 1 0 a m b i e n t t e m p e ra t u re rang e c -5 5 t o + 1 6 0 o a r s - 1 z c o m m e n t s c u rre n t ra t i n g a t 2 5 o c a m p s 6 5 c u rre n t ra t i n g a t 8 5 o c a m p s 4 6 a m b i e n t t e m p e ra t u re rang e c -5 5 t o + 1 6 0 z e ro -o h m j u m p e r p h y s i c a l d a t a d i m e n s i o n s (mm) a n d re co mm ende d s o l d e r pad s t yp e l h t d w a n o m . b n o m . c n o m . d n o m . o a r s1/3 > r00 3 , o a r s-1 z 3 . 0 5 0 . 7 6 o a r s1/3 - r00 3 1 1 . 1 8 0 . 3 8 4 . 8 3 0 . 7 6 3 . 1 8 0 . 3 8 4 . 0 7 o a r s1/3 - r00 2 1 1 . 5 6 0 . 3 8 3 . 5 1 0 . 7 6 4 . 7 0 . 7 6 3 . 5 6 0 . 3 8 4 . 4 5 9 . 3 7 3 . 0 7 o a r s-xp 1 0 . 7 t o 1 2 . 0 * 2 . 2 8 t o 4 . 5 7 * 2 . 3 6 0 . 2 5 4 . 8 3 0 . 7 6 6 . 3 5 0 . 3 8 7 . 2 4 9 . 5 8 3 . 1 8 3 . 2 3 * d e p e n d e n t o n o h m i c v a l u e a b d c c 07.11 resistors all parts are pb-free and comply with eu directve 2011/65/eu (rohs2) 11.16 general note tt electronics reserves the right to make changes in product specifcation without notice or liability. all information is subject to tt electronics own data and is considered accurate at time of going to print. ? tt electronics plc http://www.ttelectronics.com/resistors bi technologies irc welwyn
surface mount sense resistors oars, oars-xp, oarsz series s u r f a ce m o u n t s e n s e r e si st o r s o a r s , o a r s - x p , o a r s z s e r i e s p e r f o r m a n c e d a t a ( a e c - q 2 0 0 ) o a r s1/3 < r00 4 r00 4 to r01 5 > r01 5 o a r s-xp < r00 2 r00 2 to r00 7 > r00 7 t c r (-5 5 t o 125o c ) p p m / o c 2 4 0 4 0 4 0 t h e r m a l sh o ck ? r % 0 . 7 5 0 . 7 5 0 . 7 5 h i g h t e m p . e x p o s u re (125o c ) ? r % 1 . 7 5 0 . 5 1 t e m p . c y cl i n g (-4 0 t o 125o c ) ? r % 1 1 0 . 7 5 o p e ra t i o n a l l i f e ? r % 2 1 1 bi a s e d h u mi d i t y ? r % 0 . 7 5 0 . 5 0 . 5 me ch a n i ca l sh o ck ? r % 1 . 5 1 1 vi b ra t i o n ? r % 1 1 1 t e r mi n a l st re n g t h me e t s ji s-c -642 9 so l v e n t r e s i s t a n ce me e t s mi l -st d -0 0 2 me t h o d 2 1 5 so l d e ra b i l i t y me e t s j-st d -0 0 2 me t h o d b n o t e : t e m p e r a t u r e ri s e d a t a a r e g i v e n h e r e f o r t y p i c a l m o u n t i n g c o n d i t i o n s . ac t u a l f i g u r e s d e p e n d o n pc b c o p p e r w e i g h t , m o u n t i n g p a d s i z e , t r a c k w i d t h a n d s u b s t r a t e t y p e . al s o , t h e o p e n a i r f o r m a t r e s p o n d s b e t t e r t o f o rc e d a i r c o o l i n g t h a n c h i p f o r m a t r e s i s t o rs . f o r v a l u e s b e l o w 5 m i l l i o h m s a l l o w a n c e s h o u l d b e m a d e f o r h e a t g e n e r a t e d i n t h e c o p p e r t r a c k s t h e m s e l v e s . ap p l i c a t i o n -s p e c i f i c g u i d a n c e i s a v a i l a b l e o n r e q u e s t . t e m p e r a t u r e d e r a t i n g 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 0 2 5 5 0 7 5 1 0 0 1 2 5 1 5 0 1 7 5 a m b i e n t t e m p e r a t u r e ( d e g c ) % o f r a t e d p o w e r p u l s e e n e r g y r a t i n g 0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 1 1 0 1 0 0 v a l u e ( m i l l i o h m s ) e n e r g y ( j ) o a r s 1/3 o a r s - x p n o t e : f o r o ar s-1 z t h e a b o v e d e r a t i n g g r a p h m a y b e a p p l i e d t o t h e s q u a r e o f t h e c u rr e n t r a t i n g . n o t e : t h i s g r a p h r e l a t e s t o s i n g l e p u l s e s o f s h o rt d u r a t i o n ( 1 0 0 m s ). h i g h e r e n e r g y l i m i t s a p p l y f o r l o n g e r p u l s e s a n d o v e rl o a d s h o t s p o t t e m p e r a t u r e r i s e 7 .6 m m x 7 .6 m m p a d s , 2 o z c o p p e r o n f r 4 , s t ill a ir 0 5 0 1 0 0 1 5 0 2 0 0 2 5 0 3 0 0 2 5 % 5 0 % 7 5 % 1 0 0 % p r o p o r t i o n o f r a t e d po w e r t e m p e r a t u r e r i s e ( k ) 5 0 / 2 5 3 0 / 1 5 1 0 / 5 5 / - v a lu e in m illio h m s o ar s 1/3 / o a r s - x p j o i n t t e m p e r a t u r e r i s e 7 . 6 m m x 7 . 6 m m p a d s , 2 o z c o p p e r o n f r 4 , s t i l l a i r 0 2 0 4 0 6 0 8 0 1 0 0 2 5 % 5 0 % 7 5 % 1 0 0 % p r o p o r t i o n o f r a t e d p o we r t e m p e r a tu r e r i s e ( k ) 5 / - 1 0 / 5 3 0 / 1 5 5 0 / 2 5 v a l u e i n m ill i o h m s o a r s 1/3 / o a r s - x p 07.11 e l ect ri cal d a t a o a r s 1 o a r s 3 o a r s - x p p o w e r r a ti ng a t 7 0 c a m b i ent , o r 140 c t e r m i nal t e m per a t u r e wa tts 2 3 5 re s i s tanc e r ang e ohm s r002 to r 050 r002 to r 015 r001 to r 025 re s i s tanc e t o l e r anc e % r002: 5 , > r0 02: 1 , 5 s ta n dar d v a l u e s ( e nqui r e f o r unl i s t e d v a l ues ) m illiohm s 2 , 3 , 4 , 5 , 10, 15, 2 0 , 22, 2 5 , 3 0 , 4 0 , 5 0 2 , 3 , 4 , 5 , 10, 1 5 induc ta n c e n h < 1 0 a m b i ent te m per a tu r e r a n g e c - 55 to + 1 6 0 o a r s - 1 z c omme nt s cu rrent r a t i n g a t 2 5 c a m b i e n t a m p s 6 5 z e r o- ohm j u m per max r e s i d ual r e s i s tanc e m illiohm s 0 . 3 a m b i ent te m per a tu r e r a n g e c - 55 to + 1 6 0 t e m p e r a t u r e d e r a t i n g oa rs z oa rs 1 /3/ x p n o t e : fo r o ar s1 / 3 / x p t h i s r e l a t e s t o p o w e r ra t i ng, f o r o ar s z i t re l a t e s t o c u rr ent r a t i n g . 1, 2, 2.5, 5, 7.5, 12.5, 10, 20, 25 11.16 general note tt electronics reserves the right to make changes in product specifcation without notice or liability. all information is subject to tt electronics own data and is considered accurate at time of going to print. ? tt electronics plc http://www.ttelectronics.com/resistors bi technologies irc welwyn
t h e rma l p e r f o rma n c e e xam p l e s t hese t h e rma l i m a g e s w e r e t a k en unde r a m b i ent condi t i ons o f st ill a i r a t 2 5 c w i t h t he co m ponen t s m ount e d on h o r i z ont a l st andar d t e st boar d s a s d e f i ned bel o w . j e de c s t and a r d c i r c u i t b o a r d : 2 ? ( 50.8 m m ) s quar e f r4 2 out e r p o we r p l a n e s , 2 o u n c e ( 70 ) cu 1 ? ( 25.4 m m ) s quar e e x pos e d 2 i n ner s i gna l p l a n e s , 1 oun c e ( 35 ) cu ( cont i nuous p l anes) i n co n t r a s t t o t h e f l a t ch i p f o rma t , t h e o a r s f o r m a t k eeps t he h o t sp o t t h e rma lly d i st ant f r o m t h e so l der j o i n t s and r edu ce s undesi r abl e hea t deliv e r y i n t o t h e p c b . f u r t h e r t herma l i m a g e s f o r o t h e r ohm i c v a l ues and pow e r d i ssi pat i ons a r e a v a ilabl e on r e q uest . k e l v i n ( 4 t e r m i n a l ) m o unt i n g f o r h i g h p r e ci si on applica t i ons a k e l v i n ( 4 t e r m i nal ) m oun t i ng m e t h od i s r e co m m ended . a n e x a m p l e t o illu st r a t e t h e desi g n p r i n ci p l e i s show n . h i g h cu rre n t connect i ons a r e m ade t o t h e t w o pai r s o f l a r g e r pads , w h ilst th e v o l t a g e sense connect i ons a r e m ade t o t h e t w o sm a lle r cent r a l pad s. oa rs 1 - r 0 0 5 at 2 w oa rs x p - r0 0 2 5 a t 5 w surface mount sense resistors oars, oars-xp, oarsz series 11.16 general note tt electronics reserves the right to make changes in product specifcation without notice or liability. all information is subject to tt electronics own data and is considered accurate at time of going to print. ? tt electronics plc http://www.ttelectronics.com/resistors bi technologies irc welwyn
s u r f a ce m o u n t s e n s e r e si st o r s o a r s , o a r s - x p , o a r s z s e r i e s f l amm construction a b i l i ty t h e re s i s t o r w i l l n o t b u rn o r e mi t i n cand e s ce n t p a rt i c l e s und e r a n y co n d i t i o n o f app l i e d t e m p e ra t u re o r o v e r l o a d . ma r k i n g t h e p a rt s a re l egen d m a rke d w i t h copper terminations are welded to resistance alloy strip which is then formed. value adjustment is achieved by control of width, without the need for subsequent abrasion or notch trimming. pb-free termination finish is 96% sn / 4% ag alloy. o h mi c v a l u e a n d t o l e ra n ce co d e . p ack a g i n g d a t a d i m e n s i o n s (mm) t yp e a b c d e f g o a r s1/3 , o a r s-1 z 4 . 3 2 0 . 0 8 1 1 . 7 0 . 0 8 8 0 . 1 o a r s-xp-r00 1 1 1 . 9 4 0 . 1 o a r s-xp > r00 1 7 . 2 1 0 . 1 1 1 . 5 6 0 . 1 2 4 0 . 3 1 1 . 5 0 . 1 1 . 7 5 0 . 1 1 2 0 . 1 4 0 . 1 07.11 surface mount sense resistors oars, oars-xp, oarsz series standard 4 - terminal probe positions for measuring unmounted parts 0.79 6.35 1.27 ? 0.7 6 7.94 all dimensions in mm standard 4 - terminal probe positions for measuring unmounted parts 0.79 6.35 1.27 ? 0.7 6 7.94 all dimensions in mm 11.16 general note tt electronics reserves the right to make changes in product specifcation without notice or liability. all information is subject to tt electronics own data and is considered accurate at time of going to print. ? tt electronics plc http://www.ttelectronics.com/resistors bi technologies irc welwyn
ordering procedure o r d e r ing pr o cedur e t h i s p ro d u c t h a s t w o v a lid p a rt num bers : e u r opean ( w e lw y n ) p a r t nu m b e rs : o a r s 1 - r0 1ji ( o a rs 1 , 1 0 m illiohm s 5 % , p b - f r ee) o a r s - 1 z ( o a r s - 1 z , p b - f r ee) o a r s 1 - r 0 1 j i 1 2 3 4 o a r s - 1 z 1 us a ( irc) p a r t nu m b e r s : o a r s 1 r 010 j l f ( o a r s 1 , 1 0 m illi ohm s 5% , p b - f r ee) o a r s - 1 zlf ( o a r s - 1 z , p b - f r ee) o a r s 1 r 0 1 0 j l f 1 2 3 4 o a r s - 1 z l f 1 2 1 2 3 4 t y p e va lue tole r a n c e t e r m ina ti on & pa c k ing o ar s1 3 -5 c hara c t e r s see el e c t ri c a l d a t a r = ohm s f = 1 % i = pb - f re e , t ape & r e e l o ar s3 j = 5 % o ar s1 , o ar s3 1900/ r eel o ar s - x p o ar s - x p 1200/ r eel 1 t y p e o ar s - 1 z n o v a l ue o r t o l e ra n c e a ppl i e s . t e rm i nat i on i s pb - f ree. p a c k i n g i s t ape & r e e l , 1 9 00/ re e l . 1 2 3 4 t y p e va lue tole r a n c e t e r m ina ti on & pa c k ing o ar s1 4 / 5 c hara c t e r s see el e c t ri c a l d a t a r = ohm s f = 1 % l f = pb - f r e e o ar s3 j = 5 % o ar s1 , o ar s3 1900/ r eel o ar s - x p o ar s - x p 1200/ r eel 1 2 t y p e t e r m ina ti on & pa c k ing o ar s - 1 z n o v a l ue o r t o l e ra n c e a ppl i e s . l f = pb - f r ee, t ape & r eel , 1 9 00/ re e l . surface mount sense resistors oars, oars-xp, oarsz series 11.16 general note tt electronics reserves the right to make changes in product specifcation without notice or liability. all information is subject to tt electronics own data and is considered accurate at time of going to print. ? tt electronics plc http://www.ttelectronics.com/resistors bi technologies irc welwyn
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