mcr18 resistors rev . b 1/5 thick film rect angular mcr18 (1206 size: 1 / 4w) z f eatu r es 1) pow e r rating of 1 / 4w 2) highly reliable chip resistor ruthenium oxide diel ectric of fers superior resist ance to the element s. 3) electrodes not corroded by soldering t h ick film makes the electrodes very strong. 4) leading the w o rld in development and mass production. s i n c e st art of p r o d u cti o n i n 19 7 6 (f irst i n t he w o l d ), t h i s c o m p o n ent h a s estab l i s h e d a s o li d r e putati on as a general?purpose chip resistor . 5) rohm resistors have appr oved iso?9001 cert ification. d e s i gn an d s p ec ific at io ns are sub j ect t o ch a n g e w i t h o u t n o t i ce. ca ref u ll y ch eck t h e sp ec ifi c at io n sh e e t b e f o re us ing or ordering it. z ra tings 0.25w (1 / 4w) ? 55 c to + 155 c 200v at 70 c item conditions specifications rated power rated voltage operating temperature nominal resistance see table 1. limiting element voltage power must be derated according to the power derating curve in figure 1 when ambient temperature exceeds 70 c . the voltage rating is calculated by the following equation. if the value obtained exceeds the limiting element voltage, the voltage rating is equal to the maximum operating voltage. e: rated voltage (v) p: rated power (w) r: nominal resistance ( ? ) e = p r 0 20 40 60 80 100 ? 55 0 7 0 100 155 ambient temperat ure ( c) power load (%) fig.1
mcr18 resistors rev . b 2/5 max. 50m ? 2a ? 55 c to + 155 c resistance rated current operating temperature jumper type table 1 resistance tolerance resistance range ( ? ) resistance temperature coefficient (ppm / c ) f ( 1%) j ( 5%) 10 r 10m 10 r 2.2m (e24,96) (e24) (e24) (e24) 100 200 2.2 r < 10 500 1.0 r < 2.2 500 350 z before using component s in circuit s w here they w ill be ex posed to transient s such as pulse loads (short?duration, high?lev el lo ads), be cert ain to ev aluate the component in the mounted st ate. in addi tion, the reliability and performance of th is component cannot be guaranteed if it is used w i th a steady st ate v o lt age that is greater than it s rated v o lt age. z ch aracteristics item test conditions (jis c 5201-1) resistor type guaranteed value jumper type 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 resistance to solvent resistance to soldering heat overload (2.0% + 0.1 ? ) max. 50m ? (1.0% + 0.05 ? ) (3.0% + 0.1 ? ) max. 50m ? max. 100m ? j : 5% f : 1% 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 mechanical damage such as breaks. max. 50m ? jis c 5201-1 4.5 jis c 5201-1 4.8 measurement : ? 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 : 1,000h to 1,048h (3.0% + 0.1 ? ) (3.0% + 0.1 ? ) (1.0% + 0.05 ? ) (1.0% + 0.05 ? ) (1.0% + 0.05 ? ) max. 100m ? max. 100m ? max. 50m ? max. 50m ? max. 50m ? jis c 5201-1 4.25.1 rated voltage (current), 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 5 c , immersion cleaning, 5 0.5min. 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 rosinethanol (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. maximum overload voltage : 400v
mcr18 resistors rev . b 3/5 z ex te rna l dime ns ions (unit : mm) 0.5 0.25 1.6 0.15 0.55 0.1 0.5 0.25 3.2 0.15 no. material resistive element (oxide metal thick film) silver thick film electrode nickel electrode sn electrode alumina substrate overcoating 1 2 3 4 5 6 1 2 4 5 6 3 z packag in g 0 2 0 4 0 6 0 8 0 2 0 4 0 6 0 8 c ab d ab c d p 0 p 2 p 2 e f w t 2 d 2 a 2 b 2 label eiaj et-7200b compliant thick paper mount (underside paper tape) chip resistor square punchout hole heat crimp cover/tape 180 0 ? 1.5 60 +1 0 9 +1.0 0 13 0.2 4.0 0.1 4.0 0.1 2.0 0.05 max. 1.1 1.5 +0.1 0 8.0 0.3 3.5 0.05 1.75 0.1 1.95 + 0.1 ? 0.05 3.5 + 0.15 ? 0.05 (unit: mm) (unit: mm) wf e a 2 b 2 d 2 p 2 p 2 p 2 t 2 reel taping
mcr18 resistors rev . b 4/5 z ma k e up of the p a rt numbe r packaging specifications code part no. mc 8 1 re resistance tolerance zh j nominal resistance ezh paper tape (4mm pitch) 180mm (7in.) 5 , 000 mcr18 j 5% f 1% j is also used for jumper reel ( 180) : jeita et-7200b : standard product part no. resistance tolerance code packaging specifications reel basic ordering unit (pcs) j( 5%) f( 1%) f j : : 4 digits 3 digits resistance code, 3 or 4 digits. 000 denotes jumper type. resistance tolerance resistance code z dime ns ions 3.00 2.95 3.05 3.10 3.20 3.15 3.25 3.30 3.35 3.40 3.45 resistance ( ) length (mm) jis c 5201-1 4.4.2 sample size : n = 20pcs micrometer 0.1 1 1 0 100 1k 10k 100k 1m 10m fig.2 dimensions (length) 0.1 1 1 0 100 1k 10k 100k 1m 10m resistance ( ) width (mm) jis c 5201-1 4.4.2 sample size : n = 20pcs micrometer 1.40 1.45 1.50 1.55 1.60 1.65 1.70 1.75 1.80 fig.3 dimensions (width) 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 jis c 5201-1 4.4.2 sample size : n = 20pcs micrometer 0.1 1 10 100 1k 10k 100k 1m 10m resistance ( ) thickness (mm) fig.4 dimensions (thickness) z electrical ch aracteristics resistance ( ) dc resistance (%) 0.1 1 1 0 100 1k 10k 100k 1m 10m jis c 5201-1 4.5 sample size : n = 20pcs 20 c 65%rh ? 8.0 ? 6.0 ? 4.0 ? 2.0 0.0 2.0 4.0 6.0 8.0 fig.5 resistance jis c 5201-1 4.8 sample size : n = 10pcs 25 c / ? 55 c 25 c / 125 c ? 900 ? 700 ? 500 ? 300 ? 100 100 300 500 700 900 temperature coefficient (ppm/ c) resistance ( ) 0.1 1 1 0 100 1k 10k 100k 1m 10m fig.6 variation resistance with temperature ? 4.0 ? 3.0 ? 2.0 ? 1.0 0.0 1.0 2.0 3.0 4.0 resistance ( ) r/r (%) 0.1 1 1 0 100 1k 10k 100k 1m 10m jis c 5201-1 4.13 sample size : n = 10pcs rated voltage 2.5times : 2s maximum overload voltage : 400v fig.7 overload
mcr18 resistors rev . b 5/5 ? 2.0 ? 1.5 ? 1.0 ? 0.5 0 0.5 1.0 1.5 2.0 resistance change (%) resistance ( ? ) jis c 5201-1 4.18 sample size : n = 10pcs soldering condition : 260 c 10s 0.1 1 1 0 100 1k 10k 100k 1m 10m fig.8 resistance to soldering heat ? 2.0 ? 1.5 ? 1.0 ? 0.5 0.0 0.5 1.0 1.5 2.0 0.1 1 1 0 100 1k 10k 100k 1m 10m resistance ( ? ) jis c 5201-1 4.19 sample size : n = 10pcs ? 55 c / 125 c 5cyc ? r/r (%) fig.9 rapid change of temperature fig.10 damp heat, steady state ? 4.0 ? 3.0 ? 2.0 ? 1.0 0 1.0 2.0 3.0 4.0 resistance change (%) resistance ( ? ) jis c 5201-1 4.24 sample size : n = 10pcs 40 c 93%rh with no load 1,000h 0.1 1 1 0 100 1k 10k 100k 1m 10m resistance ( ? ) 0.1 1 1 0 100 1k 10k 100k 1m 10m jis c 5201-1 4.25.1 sample size : n = 10pcs 70 c 1,000h overload : the rated voltage ? 4.0 ? 3.0 ? 2.0 ? 1.0 0 1.0 2.0 3.0 4.0 resistance change (%) fig.11 endurance (at 70 c) ? 4.0 ? 3.0 ? 2.0 ? 1.0 1.0 2.0 3.0 4.0 resistance change (%) resistance ( ? ) 0.1 1 1 0 100 1k 10k 100k 1m 10m jis c 5201-1 4.25.3 sample size : n = 10pcs 155 c with no load 1,000h 0 fig.12 endurance jis c 5201-1 4.29 sample size : n = 10pcs ipa, 5min. ? 2.0 ? 1.5 ? 1.0 ? 0.5 0.0 0.5 1.0 1.5 2.0 resistance ( ? ) ? r/r (%) 0.1 1 1 0 100 1k 10k 100k 1m 10m fig.13 resistance to solvents ? 2.0 ? 1.5 ? 1.0 ? 0.5 0 0.5 1.0 1.5 2.0 resistance change (%) resistance ( ? ) 0.1 1 1 0 100 1k 10k 100k 1m 10m jis c 5201-1 4.33 sample size : n = 10pcs endurance with 90mm width fig.14 bend strength of the end face plating
appendix appendix1-rev1.1 the products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. notes no technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of rohm co.,ltd. the contents described herein are subject to change without notice. the specifications for the product described in this document are for reference only. upon actual use, therefore, please request that specifications to be separately delivered. application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. rohm co.,ltd. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by rohm co., ltd. is granted to any such buyer. products listed in this document are no antiradiation design. about export control order in japan products described herein are the objects of controlled goods in annex 1 (item 16) of export trade control order in japan. in case of export from japan, please confirm if it applies to "objective" criteria or an "informed" (by miti clause) on the basis of "catch all controls for non-proliferation of weapons of mass destruction.
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