features ? compared with three past in the chip resistor use, reduction in mounting costs and process, save pcb space how to order atc 1a 2 c h series size (1a: 1.0 1.0mm) attenuation (1 digit numbering) 1: 1db, 2: 2db, 3: 3db, 4: 4db, 5: 5db 6: 6db, 7: 7db, 8: 8db, 9: 9db, a: 10db attenuation tolerance c 0.3db d 0.5db packaging code form material packing unit h taping paper 10000 pcs./ reel * 2mm pitch taping rohs compliant dimensions (unit: mm) 1 2 4 3 w d t c e1 p l unbalanced circuit circuit diagram rating chip attenuators item rating impedance 50 w attenuation 1db, 2db, 3db, 4db, 5db 6db, 7db, 8db, 9db, 10db attenuation 0.3db: 1db to 5db tolerance 0.5db: 6db to 10db rated power 40mw/ package applicable frequency dc to 2ghz vswr 1.3 max. working temperature ? 55 to + 125 c code l w t p c dimensions 1.00 0.10 1.00 0.10 0.35 0.05 0.65 typ. 0.20 0.15 code d e1 dimensions 0.20 0.15 0.33 0.10 chip attenuators atc1a series
circuit design 1) once application and assembly environments have been checked, the resistors may be used in conformance with the catalog and the specifcations. 2) please consult the manufacturer in advance when the resistors is used in devices such as: devices which deal with human life, i.e. medical devices; devices which are highy public orientated; and devices which demand a high standerd of liability. 3) please use the resistors in conformance with the operating temperature provided in both the catalog and the specifcations. 4) please keep voltage under the rated voltage which is applied to the resistor. 5) do not use the resistor in an environment where it might easily exceed the respective provisions concerning shock and vibration specifed in the catalog and specifcations. 6) please do not use the resistor in the following environments. state that water, oil, and solvent hang in resistor state where poisonous gas (sulfur and chlorine, etc.) exists state that direct sunshine, radiation, and ultraviolet, etc. are irradiated 7) there is a thing that resistance changes according to the stuff of the resin when the coating with the resin is given. please use resin coating after confrming the characteristic. 8) there is a thing that resistance changes according to fux and cleaner. please use fux and cleaner after confrming the characteristic. 9) please consult about a lead free products. storage 1) keep storage place temperature + 5 to + 35 c, humidity 45 to 75% rh. 2) please keep parts out of poisonous gas such as sulfur or chlorine in the air and out of salty moisture, or they may cause rust of terminal and poor solderability. please consider the above- mentioned item after mounting. 3) soldering iron temperature soldering iron 300 5 c * time 3 sec. max. * *do not place the soldering iron on the chip. soldering iron is 30w max. soldering method 1) recommendable temperature profle r e f l o w 4 e m p o # s e c s e c s e c m a x 4 i m e t o o # - o r e t h a n o # s e c m a x p r e h e a t 2) recommendable temperature profle # a u t i o n # o o l i n g a f t e r s o l d e r i n g s h o u l d b e a s s l o w a s p o s s i b l e % n s u r e t h a t t h e c h i p 2 e s i s t o r i s p r e h e a t e d a d e q u a t e l y % n s u r e t h a t t h e t e m p e r a t u r e d i f f e r e n c e ? 4 d o e s n o t e x c e e d # w a v e 4 e m p # t o s e c s e c m a x 4 i m e t o # ? 4 p r e h e a t 3) pb-free recommendable temperature profle r e f l o w 4 e m p o # s e c 4 i m e 0 e a k t e m p e r a t u r e o # o # t o s e c m a x - o r e t h a n o # s e c m a x t o o # s e c t o o # p r e h e a t precautions
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