1/3 www.rohm.com c 2011 rohm co., ltd. all rights reserved. 2011.03 - rev.d ultra low ohmic resistors for current detection pmr03 ? features 1) metal-plate, which is an excellent material in view of electr ical characteristics, is employed as resistive element by rohm? s unique production method. 2) 0.25w is achieved; the industry?s first for 0603 sized metal-plate type. 3) 0 to +150ppm/ ? c of tcr (temperature coefficient of resistanc e) is realized at ultra-low resistance of 10m ? 4) completely pb free product ? rating 0.25w (1/4w) ? 55 c to + 155 c at 70 c for resistors operated at the ambient temperature in excess of 70 c , the load shall be derated in accordance with fig.1 item conditions specifications rated power rated voltage and current are determined from the following. e: rated voltage (v) i : rated current (a) p: rated power (w) r: resistance ( ) rated voltage rated current operating temperature nominal resistance see table 1. e = p r e = p / r 10 u f ( 1%) j ( 5%) 0 to +150 resistance (m ) tolerance temperature coefficient (ppm / ?c) table.1 special code 0 20 40 60 80 100 ? 55 0 70 100 125 155 ambient temperature ( c) power load (%) fig.1
2/3 www.rohm.com c 2011 rohm co., ltd. all rights reserved. 2011.03 - rev.d data sheet pmr03 ? characteristics item test conditions (jis c 5201-1) resistor type guaranteed value resistance variation of resistance with temperature solderability damp heat, steady state endurance at 70 c endurance rapid change of temperature bend strength of the end face plating component solvent resistance resistance to soldering heat overload (2.0%+0.0005 ) (1.0%+0.0005 ) (3.0%+0.0005 ) f : 1% j : 5% see table.1 no remarkable abnormality on the appearance. a new uniform coating of minimum of 95% of the surface being immersed and no soldering damage. without open. jis c 5201-1 4.5 measuring method : measure under terminations by 4 probes. jis c 5201-1 4.8 measurement : 25 / -55 / + 25 / + 125 c jis c 5201-1 4.18 soldering condition : 260 5 c duration of immersion : 10 1s. jis c 5201-1 4.24 40 c, 93%rh test time : 56days (3.0%+0.0005 ) (3.0%+0.0005 ) (0.5%+0.0005 ) (1.0%+0.0005 ) jis c 5201-1 4.25.1 rated power, 70 c 1.5h : on ? 0.5h : off test time : 1,000h to 1,048h jis c 5201-1 4.25.3 155 c test time : 1,000h to 1,048h jis c 5201-1 4.29 23 c 5 c solvent : 2-propanol jis c 5201-1 4.19 test temp. : ? 55 c to + 125 c 5cyc jis c 5201-1 4.33 jis c 5201-1 4.17 rosin?thanol (25%wt) soldering condition : 235 5 c duration of immersion : 2.0 0.5s. jis c 5201-1 4.13 rated voltage (current) 2.5, 2s. fig.2 (under terminations) probes
3/3 www.rohm.com c 2011 rohm co., ltd. all rights reserved. 2011.03 - rev.d data sheet pmr03 ? dimensions&construction no. material t resistive metal element (ni-cu/ni-cr alloy) primary electrode(cu) external electrode(sn) overcoat (resin : black) resistance measure l?.15 w?.15 t?.10 a?.15 10m 1.60 0.80 0.25 0.35 (unit:mm) l w a (the surface) (the back) (the cross section) ? product designation special part number p ackaging specifications code part no. pm 0 r nominal resistance ezp part no. resistance tolerance j ( 5%) f ( 1%) code embossed tape (4mm pitch) 180mm (7inch) packaging specifications reel 5 , 000 basic ordering unit (pcs) r eel ( 180) : compatible with jeita standard "eiaj et-7200b" : standard product 3 e z p j u resistance tolerance 5% j 1% f 10 m u pmr03 j : 3 digits resistance tolerance resistance value jf resistance code resistance code, 3 or 4 digits. 10m 10l 10l0 l f : 4 digits 1 0 ? packaging p 0 p 2 p 1 e f w t 2 d 0 a 0 b 0 base paper (bottom tape) components cavity top tape 8.0 0.3 3.5 0.05 1.75 0.1 0.95 0.1 1.75 0.1 4.0 0.1 4.0 0.1 2.0 0.05 max. 1.1 1.5 +0.1 0 (unit : mm) wf ea 0 b 0 d 0 p 0 p 1 p 2 t 2 0 2 0 4 0 6 0 8 0 2 0 4 0 6 0 8 c abd label abcd reel taping eiaj et-7200b compliant (unit : mm) 180 0 ? 1.5 60 +1 0 9 +1.0 0 13 0.2
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