MCR25 Resistors Thick film rectangular MCR25 (3225 size: 1 / 4W) zFeatures 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. zRatings Item Rated power Conditions Specifications Power must be derated according to the power derating curve in Figure 1 when ambient temperature exceeds 70°C. 0.25W (1 / 4W) at 70°C 100 POWER LOAD (%) 80 60 40 20 0 -55 0 70 100 125 AMBIENT TEMPERATURE (˚C) Fig.1 Rated 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. E= Nominal resistance P×R E: Rated voltage (V) P: Rated power (W) R: Nominal resistance (Ω) −55°C to +125°C Table 1 Jumper type Max. 50mΩ Rated current Operating temperature 200V See Table 1. Operating temperature Resistance Limiting element voltage 2A −55°C to +125°C Resistance tolerance Resistance range (Ω) Resistance temperature coefficient (ppm/°C) F (±1%) 10≤ R ≤ 1M (E24,96) J (±5%) 1.0 ≤ R < 2.2 (E24) 2.2 ≤ R < 5.6 (E24) ±500 5.6 ≤ R ≤ 3.3M (E24) ±200 ±100 500±350 •Before using components in circuits where they will be exposed to transients such as pulse loads (short-duration, 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. Rev.A 1/5 MCR25 Resistors zCharacteristics Guaranteed value Resistor type Jumper type Item J : ±5% F : ±1% Resistance Test conditions (JIS C 5201-1) Max. 50mΩ Variation of resistance with temperature JIS C 5201-1 4.5 JIS C 5201-1 4.8 Measurement : −55 / +25 / +125°C See Table.1 ± (2.0%+0.1Ω) Overload JIS C 5201-1 4.13 Rated voltage (current) ×2.5, 2s. Limiting Element Voltage×2 : 400V Max. 50mΩ JIS C 5201-1 4.17 Rosin·Ethanol (25%WT) Soldering condition : 235±5°C Duration of immersion : 2.0±0.5s. A new uniform coating of minimum of 95% of the surface being immersed and no soldering damage. Solderability Resistance to soldering heat Rapid change of temperature ± (1.0%+0.05Ω) Max. 50mΩ No remarkable abnormality on the appearance. JIS C 5201-1 4.18 Soldering condition : 260±5°C Duration of immersion : 10±1s. ± (1.0%+0.05Ω) Max. 50mΩ JIS C 5201-1 4.19 Test temp. : −55°C to +125°C 5cyc ± (3.0%+0.1Ω) Max. 100mΩ JIS C 5201-1 4.24 40°C, 93%RH Test time : 1,000h to 1,048h ± (3.0%+0.1Ω) Max. 100mΩ 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 ± (3.0%+0.1Ω) Max. 100mΩ JIS C 5201-1 4.25.3 125°C Test time : 1,000h to 1,048h ± (1.0%+0.05Ω) Max. 50mΩ JIS C 5201-1 4.29 23±5°C, Immersion cleaning, 5±0.5min. Solvent : 2-propanol Damp heat, steady state Endurance at 70°C Endurance Resistance to solvent Max. 50mΩ ± (1.0%+0.05Ω) Without mechanical damage such as breaks. Bend strength of the end face plating JIS C 5201-1 4.33 zExternal dimensions (Unit : mm) 1 0.5±0.25 2 1 Resistive element (Qxide metal thick film) 2 Silver thick film electrode 3 Nickel electrode 4 Sn electrode 5 Alumina substrate 6 Overcoating 4 2.5±0.15 5 0.55±0.1 3 0.5±0.25 3.2±0.15 Material No. 6 Rev.A 2/5 MCR25 Resistors zPackaging Taping P0 P2 B0 02 04 06 08 06 D 04 B 02 A 08 W F 0 φD E Reel A0 K P1 (Unit : mm) C Label EIAJ ET-7200B compliant (Unit : mm) W F E A0 B0 8.0±0.3 3.5±0.05 1.75±0.1 3.0±0.1 3.5±0.1 A B C D D0 P0 P1 P2 K 0 φ180 −1.5 +1 φ60 0 +1.0 9 0 φ13±0.2 φ1.5 +0.1 0 4.0±0.1 4.0±0.1 2.0±0.05 Max. 1.1 zMakeup of the part number M C R 2 5 J Z H Part No. J Resistance tolerance F J ±1% ±5% Nominal resistance Resistance code, 3 or 4 digits. 000 denotes jumper type. Resistance Resistance tolerance code J is also used for jumper F J : : 4 digits 3 digits Packaging / Processing specifications Part No. MCR25 Code Packaging JZH Standard ordering unit(pcs) Paper tape 4,000 zDimensions 3.60 JIS C 5201-1 4.4.2 SAMPLE SIZE : n=20pcs MICROMETER 2.80 3.40 3.10 THICKNESS (mm) 3.20 2.60 2.50 2.40 0.60 0.55 0.50 3.00 2.30 0.45 2.90 2.20 0.40 2.80 2.10 0.1 1 10 100 1k 10k 100k1M 3.3M RESISTANCE (Ω) Fig.2 Dimensions (length) JIS C 5201-1 4.4.2 SAMPLE SIZE : n=20pcs MICROMETER 0.70 0.65 2.70 3.30 WIDTH (mm) LENGTH (mm) 0.75 2.90 JIS C 5201-1 4.4.2 SAMPLE SIZE : n=20pcs MICROMETER 3.50 0.35 0.1 1 10 100 1k 10k 100k 1M 3.3M RESISTANCE (Ω) Fig.3 Dimensions (width) 0.1 1 10 100 1k 10k 100k 1M 3.3M RESISTANCE (Ω) Fig.4 Dimensions (thickness) Rev.A 3/5 MCR25 Resistors zElectrical characteristics 8.0 2.0 0 −2.0 −4.0 −6.0 0.1 1 10 100 1k 10k 100k 1M 3.3M JIS C 5201-1 4.8 SAMPLE SIZE : n=10pcs 25°C / −55°C 25°C / 125°C 700 500 3.0 2.0 300 100 −100 −300 0 −1.0 −3.0 −700 −4.0 0.1 1 −5.0 10 100 1k 10k 100k 1M 3.3M 0.1 1 Fig.7 Overload Fig.6 Variation resistance with temperature Fig.5 Resistance 2.0 2.5 JIS C 5201-1 4.18 SAMPLE SIZE : n=10pcs SOLDERING CONDITION : 260°C 10s 10 100 1k 10k 100k 1M 3.3M RESISTANCE (Ω) RESISTANCE (Ω) RESISTANCE (Ω) 1.5 1.0 −2.0 −500 −900 JIS C 5201-1 4.13 SAMPLE SIZE : n=10pcs RATED VOLTAGE×2.5TIMES : 2s LIMITING ELEMENT VOLTAGE×2 : 400V 4.0 ∆R/R (%) 4.0 TEMPERATURE COEFFICIENT (ppm/°C) DC RESISTANCE (%) 6.0 −8.0 5.0 900 JIS C 5201-1 4.5 SAMPLE SIZE : n=20pcs 20°C 65%RH 4.0 JIS C 5201-1 4.19 SAMPLE SIZE : n=10pcs −55°C / 125°C 5cyc 2.0 1.5 JIS C 5201-1 4.24 SAMPLE SIZE : n=10pcs 40°C 93%RH WITH NO LOAD 1,000h 3.0 1.0 2.0 0 −0.5 0 −0.5 −1.0 −1.0 1 −2.5 10 100 1k 10k 100k 1M 3.3M 0.1 1 JIS C 5201-1 4.25.1 SAMPLE SIZE : n=10pcs 70°C 1,000h OVERLOAD : THE RATED VOLTAGE 2.0 1.0 1.0 0.5 0 −1.0 0 −2.0 −1.0 −3.0 −3.0 −1.5 0.1 1 10 100 1k 10k 100k 1M 3.3M −4.0 10k 100k 1M 3.3M −0.5 −2.0 −4.0 1k 0.1 1 10 100 1k 10k 100k 1M 3.3M JIS C 5201-1 4.29 SAMPLE SIZE : n=10pcs IPA, 5min. 1.5 ∆R/R (%) 0 −1.0 100 2.0 JIS C 5201-1 4.25.3 SAMPLE SIZE : n=10pcs 125°C WITH NO LOAD 1,000h 3.0 ∆R/R (%) 1.0 10 Fig.10 Damp heat, steady state 4.0 4.0 2.0 1 RESISTANCE (Ω) Fig.9 Rapid change of temperature Fig.8 Resistance to soldering heat ∆R/R (%) −4.0 10 100 1k 10k 100k 1M 3.3M RESISTANCE (Ω) RESISTANCE (Ω) 3.0 0 −1.0 −3.0 −2.0 0.1 1.0 −2.0 −1.5 −1.5 −2.0 0.5 ∆R/R (%) 0.5 ∆R/R (%) ∆R/R (%) 1.0 −2.0 0.1 1 10 100 1k 10k 100k 1M 3.3M RESISTANCE (Ω) RESISTANCE (Ω) RESISTANCE (Ω) Fig.11 Endurance at 70°C Fig.12 Endurance Fig.13 Resistance to solvents Rev.A 4/5 MCR25 Resistors 2.0 JIS C 5201-1 4.33 SAMPLE SIZE : n=10pcs ENDURANCE WITH 90mm WIDTH 1.5 ∆R/R (%) 1.0 0.5 0 −0.5 −1.0 −1.5 −2.0 0.1 1 10 100 1k 10k 100k 1M 3.3M RESISTANCE (Ω) Fig.14 Bend strength of the end face plating Rev.A 5/5 Appendix 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. 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. 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. Appendix1-Rev1.1