double-sided chip resistors dsc series www.bitechnologies.com www.irctt.com www.welwyn-tt.com 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 11.12 two parallel resistance elements in a single chip excellent pulse withstand performance laser trimmed up to 0.5% tolerance enhanced working voltage enhanced power rating pb-free terminations anti-sulphur version available. 2 1 5 2 0 1 0 2 6 0 2 1 5 . 1 5 7 . 0 3 3 . 0 s t t a w c 0 7 @ r e w o p 4 . 9 7 . 4 1 . 2 s t t a w c 5 2 @ r e w o p d a o l r e v o d n o c e s 2 s h p a r g e e s e c n a m r o f r e p e s l u p t r o h s 7 m 4 o t 0 r 1 s m h o e g n a r e c n a t s i s e r 5 , 1 : s e u l a v l l a , 5 . 0 : m 1 o t r 0 1 % e c n a r e l o t 0 0 5 0 0 4 0 0 2 s t l o v v e l 0 0 1 : r 0 1 > 0 0 2 : r 0 1 < c / m p p r c t 5 5 1 + o t 5 5 - c e r u t a r e p m e t g n i t a r e p o 0 0 5 s t l o v e g a t l o v d n a t s h t i w c i r t c e l e i d 0 5 0 8 0 6 1 w / c e c n a d e p m i l a m r e h t pad & trace ar ea for rated power* mm 2 0 0 1 0 6 0 5 0805 0.25 1.6 1r0 to 1m0 210 150 40 r e d r o l a i c e p s o t s e u l a v r e h t o - d e r r e f e r p 6 9 r o 4 2 e s e u l a v double-side d chip resistor s d s c s e rie s t wo parallel r esistance elements in a single chip excellent pulse withstand performance laser trimmed up to 0.5% tolerance enhanced working voltage enhanced power rating pb-fr ee terminations general note w elwyn components r eserves the right to make changes in pr oduct specification without notice or liability . all information is subject to w elwyn? s own data and is consider ed accurate at time of going to print. ? w elwyn components limited bedlington, northumberland ne22 7aa, uk t elephone: +44 (0) 1670 822181 facsimile: +44 (0) 1670 829465 email: info@welwyn-tt.com w ebsite: www .welwyn-tt.com e lectrica l d a t a 04. 08 a subsidiary of tt electr onics plc w el wyn components dimensions (mm) & w eight (g) l w t max a b min c wt. 1206 3.20.4 1.60.2 0.7 0.40.2 1.7 0.40.15 0.020 0805 2.00.3 1.250.2 0.7 0.30.15 0.9 0.30.15 0.012 2010 5.10.3 2.50.2 0.8 0.60.3 3.0 0.60.25 0.036 2512 6.50.3 3.20.2 0.8 0.60.3 4.4 0.60.25 0.055 physica l d a t a _ * recommended minimum pad & adjacent trace ar ea for each termination for rated power dissipation on fr4 pcb construction thick film r esistor material, overglaze and organic pr otection ar e scr een printed on a 96% alumina substrate. w rap-ar ound termi nations have an electr oplated nickel barrier and pb-fr ee solderable coating, this ensur es excellent ?leach? r esistance pr operties and s olderability . marking components ar e not marked. reels ar e marked with type, value, tolerance, date code and quantity . solvent resistance the body pr otection is r esistant to all normal industrial cleaning solvents suitable for printed cir cuits. t w a a b l w rap-ar ound terminations (3 faces) c
double sided chip resistors dsc series www.bitechnologies.com www.irctt.com www.welwyn-tt.com 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 11.12 double s i ded c hip r e s i sto r s d s c s e rie s ? w elwyn components limited bedlington, northumberland ne22 7aa, uk t elephone: +44 (0) 1670 822181 facsimile: +44 (0) 1670 829465 email: info@welwyn-tt.com w ebsite: www .welwyn-tt.com 07. 08 w el wyn components p e rform ance d a t a pulse p e rform anc e d a t a lightning surge resistors are tested in accor dance with iec 60 115-1 using both 1.2/50s and 10/700s pulse shapes. 10 pulses are applied. the limit of acceptance is a shift in resistance of less than 1% from the initial value. 1 0 100 1 , 000 10, 000 1 1 0 100 1 , 000 10, 000 100, 000 1 , 000, 0 0 0 10, 000, 0 0 0 p e a k v ol t a g e ( v ) v a lue ( o h ms) 1 . 2 / 50s l i g h t n i n g s u r g e 0 8 0 5 1 2 0 6 2 0 1 0 2 5 1 2 1 0 100 1 , 000 10, 000 1 0 100 1 , 000 10, 000 100, 000 1 , 000, 0 0 0 10, 000, 0 0 0 p ea k v ol t a g e ( v ) v a lue ( oh m s ) 10/ 700s l i ght n i ng s u r g e 0 8 0 5 1 2 0 6 2 0 1 0 2 5 1 2 maximum typical load at rated power: 1000 hours at 70c r% 1 0.25 derating from rated power at 70c r% zero at 155c overload: 6.25 x rated power for 2 seconds 1 0.1 shelf life test: 12 months at room temperature r% 0.1 0.02 dry heat: 1000 hours at 155c r% 1 0.2 long term damp heat r% 1 0.25 temperature rapid change r% 0.25 0.05 resistance to sulphur-bearing gas (as version only): astm-b-809 0.25 0.05 resistance to solder heat r% 0.25 0.05 note: a 0.01 ohm addition to be added to the performance of all resistors <10 ohms.
double sided chip resistors dsc series www.bitechnologies.com www.irctt.com www.welwyn-tt.com 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 11.12 d ouble side d c hip resistor s d s c s e rie s ? w elwyn components limited bedlington, northumberland ne22 7aa, uk t elephone: +44 (0) 1670 822181 facsimile: +44 (0) 1670 829465 email: info@welwyn-tt.com w ebsite: www .welwyn-tt.com 07.08 single pulse the single impulse graph is the r esult of 50 impulses of r ectangular shape applied at one-minute intervals. the limit of acceptance was a shift in r esistance of less than 1% fr om the initial value. continuous load due to repetitive pulses the continuous load graph was obtained by applying r epetitive r ectangular pulses wher e the pulse period was adjusted so that the average power dissipated in the r esistor was equal to its rated power at 70c. again the limit of acceptance was a shift in r esistance of less than 1% fr om the initial value. 100 1 , 000 10, 000 1 1 0 100 1 , 000 10, 000 100, 000 1 , 000, 0 0 0 10, 000, 0 0 0 p ea k v o l t a g e ( v ) v a lue ( oh m s ) d s c2 512 - bel l c o r e g r1 089 l i g h t n i n g sur g e 2 / 1 0 s 1 0 / 1 0 0 0 s 1 1 0 100 1000 0 . 0001 0 . 001 0 . 0 1 0 . 1 1 p e a k p o w e r ( w ) p u l s e d u r a t ion ( s ) s i n g l e pu l s e 0 8 0 5 1 2 0 6 2 0 1 0 2 5 1 2 0 . 1 1 1 0 100 1000 0 . 0001 0 . 001 0 . 0 1 0 . 1 1 p e a k p o w e r ( w ) p u l s e d u r a t ion ( s ) co n t i nuo u s pu l s es 0 8 0 5 1 2 0 6 2 0 1 0 2 5 1 2
double sided chip resistors dsc series www.bitechnologies.com www.irctt.com www.welwyn-tt.com 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 11.12 double s i ded c hip r e s i sto r s d s c s e rie s ? w elwyn components limited bedlington, northumberland ne22 7aa, uk t elephone: +44 (0) 1670 822181 facsimile: +44 (0) 1670 829465 email: info@welwyn-tt.com w ebsite: www .welwyn-tt.com 07. 08 w el wyn components t herma l perfo rma nce dat a ambient t emperatur e/ c % of rated power 125 100 75 50 25 0 -15 70 155 t emperatur e derating curve p ackagi n g 0805 and1206 dsc series r esistors ar e supplied on 8mm carrier tape and 7 inch r eels as per iec 286-3, quantity per r eel; 3000. 2010 and 2512 dsc series r esistors ar e supplied on 12mm carrier tape and 7 inch r eels as per iec 286-3, quantity per r eel; 2010 : 3000pcs; 2512 : 1800pcs. reels of 1000pcs ar e available on r equest. 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 0 0 . 5 1 1 . 5 t e m p e r a t u r e r i s e ( c ) p ow e r d i ssipa t i on ( w ) t e mp e r a t u r e ris e cu r v e s 0 8 0 5 1 2 0 6 2 0 1 0 2 5 1 2
double sided chip resistors dsc series www.bitechnologies.com www.irctt.com www.welwyn-tt.com 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 11.12 t ype dsc 2512 - 10k f t 1 8 size termination v alue (use iec62 code) t olerance (use iec62 code) packing d 0.5% f 1% j 5% t3 t ape 0805, 1206 or 2010 0805, 1206, 2010 or 2512 3000/r eel standar d t18 t1 2512 1800/r eel 1000/r eel o rderi n g p r oce d u re double s i ded c hip r e s i sto r s d s c s e rie s ? w elwyn components limited bedlington, northumberland ne22 7aa, uk t elephone: +44 (0) 1670 822181 facsimile: +44 (0) 1670 829465 email: info@welwyn-tt.com w ebsite: www .welwyn-tt.com 07. 08 w el wyn components appl i c ati o n n o t e s dsc r esistors ar e ideally suited for handling by automatic methods due to their r ectangular shape and the small dimensional tolerances. electrical connection to a ceramic substrate or to a printed cir cuit boar d can be made by r eflow or wave soldering of wrap-ar ound terminations. w rap-ar ound terminations pr ovide good leach pr operties and ensur e r eliable contact. due to the r obust construction, the dsc can be immersed in the solder bath for 30 seconds at 260c. this enables the r esistor to be mounted on one side specify type r efer ence etc as shown in this example of DSC2512 10k ohms 1%. of a printed cir cuit boar d and wir e-leaded components applied on the other side. dsc is compatible with typical pb-fr ee soldering materials and temperatur e pr ofiles dsc r esistors themselves can operate at a maximum temperatur e of 155 c. for solder ed r esistors, the joint temperatur e should not exceed 110c. this condition is met when the stated power levels at 70 c and r ecommended pad and trace ar eas ar e used. allowance should be made if smaller ar eas of copper ar e used. as standard terminations anti-sulphur terminations
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