Resistors Thick film rectangular MCR25 (3225 size: 1 / 4W) @Features 1) Madeof same material as the general purpose chip re- sistors (MCR10 / 18). 2) Highly reliable chip resistor Ruthenium oxide resistive material offers superior re- sistance to the elements. 3) Electrodes not corroded by soldering Both flow and reflow soldering can be used. 4) ROHM resistors have approved ISO-9001 certifica- tion. Design and specifications are subject to change with- out notice. Carefully check the specification sheet be- fore using or ordering it. @Ratings Item Conditions Specifications Rated power Power must be derated according to the power derating curve in 0.25W (1/4) Figure 1 when ambient temperature exceeds 70C. at 70C POWER LOAD (%) AMBIENT TEMPERATURE (C) Fig.1 Rated voltage The voltage rating is calculated by the following equation. If the value Max. operating voltage 200V obtained exceeds the maximum operating voltage, the voltage rating is equal to the maximum operating voltage. E: Rated voltage (V) Max. overload voltage 400V E=vPXR P: Rated power (W) R: Nominal resistance (2) Max. intermittent overload voltage | 400V Nominal resistance See Table 1. Operating temperature 55C to +125 Jumper type Table 1 Resistance Max. 50mQ Resistance tolerance Resistance range Resistance temperature coefficient Rated : OA (Q) (ppm / C) aled Curren F (41%) 10SRS1M (E24,96) +200 Peak current 10A - . . J JB* 0.47SR<1.0 (E6) Operating temperature |55C to +125 5004350 (#5%) | J 1.05R<2.2 (E24) 2.23R<5.6 (E24) +500 5.65RS3.3M (E24) +200 Asterisk (*) indicates special specifications. @Before using components in circuits where they will be exposed to transients such as pulse loads (shortduration, high-level loads), 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 used with a steady state voltage that is greater than its rated voltage. RGM 1 Resistors MCR25 @External dimensions (Units: mm) O S+0.25 No. Material Thick dielectric glaze of ruthenium (only silver used for jumper) an 9.50.25 @ | Thick film of palladium-silver for primary electrode 3.240.15 @ @ | Nickel-coated secondary electrode @ | External electrode coated with tin and lead | Alumina substrate | Overcoating 19 3 +1 wD a @Packaging Reel Taping al BJ of [| || K ici (Units : mm) Label EIAJ ET-7001 i Ww F E Ao Bo 8.00.3 | 3.50.05 | 1.7540.1 3.00.1 3.50.1 (Units : mm) A B Cc D Do Po Pi P2 K 0.1 $180 3 60 130.3 1340.2 $1.5 , 4.00.1 4.040.1 2.00.05 | Max. 1.1 RGM 3 Resistors @Makeup of the part number Part No. a MCR25 | 3-digit or 4-digit IEC coding system | Nominal resistance a mic|Rj2[5] |[s zu] |[y Packaging / Processing specifications Resistance tolerance special part number i : +19 5% 0.47 or more, Part No.| Code | Packagin Standard ordering) Shipped to Fi +1% | J o : eng unit(pes) Pp Specify "J" for jumper also. less than 1Q (J class) MCR25 | JZH Paper tape 4,000 World wide 10Q or more (F class) LZH 10,000 World wide Blank) + or more (J class) @Dimensions 3.60 2.90 0.75 JIS C 5202 4.3 JIS C5202 4.3 JISC 52024.3 3.50 SAMPLE SIZE : n=20pes 2.80 SAMPLE SIZE : n=20pes 0.70 SAMPLE SIZE : n=20pes MICROMETER MICROMETER MICROMETER 3.40 2.70 0:65 ~ E 3.30 E260 9.60 E E = na 13.20 2.50 0.55 r 5 5 g 23.10 Q2.40 60-50 4 = Tr x w Q 6 2.80 0.47 1 10 100 1k 10k 100k 1M 3.3M RESISTANCE (Q) Fig.2 Dimensions (length) @Electrical characteristics 8.0 JIS C 5202 5.1 6.0 SAMPLE SIZE : n=20pes 20C 65%RH > o Np o DC RESISTANCE (%) ~ Qo Qo I - o I 2 o 8.0 0.47 1 10 100 1k 10k 100k 1M 3.3M RESISTANCE (Q) Fig.5 DC resistance Nd & 3 2.20 2.10 0.47 1 10 100 1k 10k 100k 1M 3.3M RESISTANCE (Q) Fig.3 Dimensions (width) JIS C 5202 5.2 SAMPLE SIZE : n=10pes O25 /-55C @25 125C (ppm / C) TEMPERATURE COEFFICIENT ob 8 0 0.47 2.2 10 100 1k 10k 100k 1M 3.3M RESISTANCE (Q) Fig.6 Resistance temperature characteristics iB a rs 3 9 to a 0.47 1 10 100 1k 10k 100k 1M 3.3M RESISTANCE (Q) Fig.4 Dimensions (thickness) 5.0 JIS C 5202 5.5 40 SAMPLE SIZE : n=10pes 30 RATED VOLTAGEX2.5 , TIMES : 5s 20 MAXIMUM OVERLOAD VOLTAGE : Xx 1.0 ce 0 1.0 4 2.0 3.0 4.0 5.0 0.47 1 10 100 1k 10k 100k 1M 3.3M RESISTANCE (Q) Fig.7 Short time overload