MCR25 resistors thick film rectangular MCR25 (3225 size: 1 / 4w) ! features 1) made of same material as the general purpose chip resistors (mcr10 / 18). 2) highly reliable chip resistor ruthenium oxide resistive material offers superior resistance to the elements. 3) electrodes not corroded by soldering suitable for re-flow soldering. 4) rohm resistors have approved iso-9001 certification. design and specifications are subject to change without notice. carefully check the specification sheet before using or ordering it. ! ! ! ! ratings 0.25w (1 / 4w) e = p r ? 55 c to + 125 c 200v at 7 0 c item conditions specifications rated power rated voltage operating temperature nominal resistance see table 1. limiting element voltage 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. power must be derated according to the power derating curve in figure 1 when ambient temperature exceeds 70 c. e: rated voltage (v) p: rated power (w) r: nominal resistance ( ? ) 0 20 40 60 80 100 -55 0 70 100 125 ambient temperature (?c) power load (%) fig.1 max. 50m ? 2a ? 55 c to + 125 c resistance rated current operating temperature jumper type f ( 1%) j ( 5%) 0.1 r < 10 (e24) 0.1 r < 1 (e24) (e24) (e24) (e24) 250 250 10 r 1m (e24,96) 200 2.2 r < 5.6 500 1.0 r < 2.2 500 350 200 5.6 r 3.3m table 1 resistance tolerance resistance range ( ? ) resistance temperature coefficient (ppm/ c) ? ? ? ? before using components in circuits where they will be exposed to transients such as pulse loads (short-duration, high-level lo ads), be certain to evaluate the component in the mounted state. in addition, the reliability and performance of this component cannot be guaranteed if it is u sed with a steady state voltage that is greater than its rated voltage.
MCR25 resistors ! characteristics 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~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~1,048h jis c 5201-1 4.25.3 125 c test time : 1,000h~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 ~ + 125 c 5cyc jis c 5201-1 4.33 jis c 5201-1 4.17 rosin ethanol (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. limiting element voltage 2 : 400v ! external dimensions (units : mm) no. material resistive element (qxide metal thick film) silver palladium thick film electrode nickel electrode sn/pb or sn electrode alumina substrate overcoating (glass) 1 2 3 4 5 6 0.5 0.25 2.5 0.15 0.55 0.15 0.5 0.25 3.2 0.15 1 2 4 5 6 3
MCR25 resistors ! packaging 0 2 0 4 0 6 0 8 0 2 0 4 0 6 0 8 c abd abcd a 0 p 1 p 0 p 2 b 0 f w k e d 0 13 0.3 180 0 ? 3 60 +1 0 13 0.2 1.5 + 0.1 0 (units: mm) (units: mm) wf ea 0 b 0 d 0 p 0 p 1 p 2 k 8.0 0.3 3.5 0.05 1.75 0.1 3.0 0.1 3.5 0.1 4.0 0.1 4.0 0.1 2.0 0.05 max. 1.1 label eiaj et-7200a compliant reel taping ! makeup of the part number MCR25 jzh 4,000 f 1% 5% j 10 ? or more (f class) 1 ? or more (j class) blank up to 10 ? (f class) up to 1 ? (j class) l packaging / processing specifications resistance tolerance special part number nominal resistance part no. 3-digit or 4-digit iec coding system part no. paper tape code packaging standard ordering unit(pcs) specify "j" for jumper also. ! dimensions 0.1 1 10 100 1k 10k 100k1m 3.3m 2.80 2.90 3.00 3.10 3.20 3.30 3.40 3.50 3.60 resistance ( ? ) length (mm) jis c 5201-1 4.4.2 sample size : n = 20pcs micrometer fig.2 dimensions (length) 2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 resistance ( ? ) width (mm) 0.1 1 10 100 1k 10k 100k 1m 3.3m jis c 5201-1 4.4.2 sample size : n = 20pcs micrometer fig.3 dimensions (width) 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 resistance ( ? ) thickness (mm) jis c 5201-1 4.4.2 sample size : n = 20pcs micrometer 0.1 1 10 100 1k 10k 100k 1m 3.3m fig.4 dimensions (thickness)
MCR25 resistors ! electrical characteristics 0.1 1 10 100 1k 10k 100k 1m 3.3m ? 8.0 ? 6.0 ? 4.0 ? 2.0 2.0 4.0 6.0 8.0 resistance ( ? ) dc resistance (%) jis c 5201-1 4.5 sample size : n = 20pcs 20 c 65%rh 0 fig.5 resistance 0.1 1 10 100 1k 10k 100k 1m 3.3m ? 900 ? 700 ? 500 ? 300 ? 100 100 300 500 700 900 resistance ( ? ) temperature coefficient (ppm/ c) jis c 5201-1 4.8 sample size : n = 10pcs 25 c / ? 55 c 25 c / 125 c fig.6 variation resistance with temperature ? 4.0 ? 5.0 ? 3.0 ? 2.0 ? 1.0 0 1.0 2.0 3.0 5.0 4.0 0.1 1 10 100 1k 10k 100k 1m 3.3m resistance ( ? ) ? r/r (%) jis c 5201-1 4.13 sample size : n = 10pcs rated voltage 2.5times : 2s limiting element voltage 2 : 400v fig.7 overload ? 2.0 ? 1.5 ? 1.0 ? 0.5 0 0.5 1.0 1.5 2.0 resistance ( ? ) ? r/r (%) jis c 5201-1 4.18 sample size : n = 10pcs soldering condition : 260 c 10s 0.1 1 10 100 1k 10k 100k 1m 3.3m fig.8 resistance to soldering heat ? 2.5 ? 2.0 ? 1.5 ? 1.0 ? 0.5 0 0.5 1.0 1.5 2.5 2.0 resistance ( ? ) ? r/r (%) jis c 5201-1 4.19 sample size : n = 10pcs ? 55 c / 125 c 5cyc 0.1 1 10 100 1k 10k 100k 1m 3.3m fig.9 rapid change of temperature ? 4.0 ? 3.0 ? 2.0 ? 1.0 1.0 2.0 3.0 4.0 resistance ( ? ) ? r/r (%) jis c 5201-1 4.24 sample size : n = 10pcs 40 c 93%rh with no load 1,000h 1 10 100 1k 10k 100k 1m 3.3m 0 fig.10 damp heat, steady state 0.1 1 10 100 1k 10k 100k 1m 3.3m ? 4.0 ? 3.0 ? 2.0 ? 1.0 0 1.0 2.0 3.0 4.0 resistance ( ? ) ? r/r (%) jis c 5201-1 4.25.1 sample size : n = 10pcs 70 c 1,000h overload : the rated voltage fig.11 endurance at 70 c ? 4.0 ? 3.0 ? 2.0 ? 1.0 0 1.0 2.0 3.0 4.0 resistance ( ? ) ? r/r (%) jis c 5201-1 4.25.3 sample size : n = 10pcs 125 c with no load 1,000h 0.1 1 10 100 1k 10k 100k 1m 3.3m fig.12 endurance ? 2.0 ? 1.5 ? 1.0 ? 0.5 0 0.5 1.0 1.5 2.0 resistance ( ? ) ? r/r (%) jis c 5201-1 4.29 sample size : n = 10pcs ipa, 5min. 0.1 1 10 100 1k 10k 100k 1m 3.3m fig.13 resistance to solvents
MCR25 resistors ? 2.0 ? 1.5 ? 1.0 ? 0.5 0 0.5 1.0 1.5 2.0 resistance ( ? ) ? r/r (%) jis c 5201-1 4.33 sample size : n = 10pcs endurance with 90mm width 0.1 1 10 100 1k 10k 100k 1m 3.3m fig.14 bend strength of the end face plating
|
