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| MCR18 Resistors Thick film rectangular MCR18 (3216 size: 1 / 4W) !Features 1) Power rating of 1 / 4W 2) Highly reliable chip resistor Ruthenium oxide dielectric offers superior resistance to the elements. 3) Electrodes not corroded by soldering Thick film makes the electrodes very strong. 4) Leading the world in development and mass production. Since start of production in 1976 (first in the wold), this component has established a solid reputation as a general- purpose chip resistor. 5) 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 Item Rated power Conditions Power must be derated according to the power derating curve in Figure 1 when ambient temperature exceeds 70C. 100 80 60 40 20 0 Specifications 0.25W (1 / 4W) at 70C POWER LOAD (%) -55 0 70 100 155 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: Rated voltage (V) E= PxR P: Rated power (W) R: Nominal resistance () Nominal resistance Operating temperature See Table 1. -55C to +155C Limiting element voltage 200V MCR18 Resistors Jumper type Resistance Rated current Max. 50m 2A F (1%) Table 1 Resistance tolerance Resistance range () Resistance temperature coefficient (ppm / C) Operating temperature -55C to +155C 0.1 R < 0.15 (E24) 0.15 R < 10 (E24) 10 R 2.2M (E24,96) 400200 250 100 400200 250 500350 500 200 J (5%) 0.1 R < 0.15 (E24) 0.15 R < 1 1.0 R < 2.2 2.2 R < 10 10 R 10M (E24) (E24) (E24) (E24) !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. !Characteristics Item Resistance Variation of resistance with temperature Overload (2.0%+0.1) Guaranteed value Resistor type Jumper type J : 5% F : 1% Max. 50m Test conditions (JIS C 5201-1) JIS C 5201-1 4.5 JIS C 5201-1 4.8 Measurement : -55 / +25 / +125C JIS C 5201-1 4.13 Rated voltage (current) x2.5, 2s. Limiting Element Voltagex2 : 400V JIS C 5201-1 4.17 Rosin*Ethanol (25%WT) Soldering condition : 2355C Duration of immersion : 2.00.5s. JIS C 5201-1 4.18 Soldering condition : 2605C Duration of immersion : 101s. JIS C 5201-1 4.19 Test temp. : -55C~+125C 5cyc JIS C 5201-1 4.24 40C, 93%RH Test time : 1,000h~1,048h JIS C 5201-1 4.25.1 Rated voltage (current), 70C 1.5h : ON - 0.5h : OFF Test time : 1,000h~1,048h JIS C 5201-1 4.25.3 155C Test time : 1,000h~1,048h JIS C 5201-1 4.29 235C, Immersion cleaning, 50.5min. Solvent : 2-propanol JIS C 5201-1 4.33 See Table.1 Max. 50m Solderability A new uniform coating of minimum of 95% of the surface being immersed and no soldering damage. (1.0%+0.05) Max. 50m No remarkable abnormality on the appearance. (1.0%+0.05) (3.0%+0.1) Max. 50m Max. 100m Resistance to soldering heat Rapid change of temperature Damp heat, steady state (3.0%+0.1) Endurance at 70C (3.0%+0.1) Endurance (1.0%+0.05) Resistance to solvent Max. 100m Max. 100m Max. 50m Bend strength of the end face plating Max. 50m (1.0%+0.05) Without mechanical damage such as breaks. MCR18 Resistors !External dimensions (Units : mm) 1 0.50.25 2 No. 1 Material Resistive element (Oxide metal thick film) Silver palladium thick film electrode Nickel electrode Sn/Pb or Sn electrode Alumina substrate Overcoating (glass) 3 2 3 0.50.25 0.550.1 3.20.15 5 4 4 5 6 6 !Packaging Reel Taping P0 P2 P2 D2 E F B2 02 04 06 08 08 06 04 1.60.15 W A B D 02 A2 Heat crimp cover/Tape Thick paper (Underside paper tape) Chip resistor Square punchout hole mount T2 C Label EIAJ ET-7200A compliant W 8.00.3 F 3.50.05 P2 4.00.1 E 1.750.1 P2 4.00.1 A2 1.95 +0.1 -0.05 (Units: mm) B2 3.5 +0.15 -0.05 T2 Max. 1.1 (Units: mm) A B C D D2 1.5 +0.1 0 P2 2.00.05 0 180 -3 +1 60 0 +1.0 9 0 130.2 Bulk case Slider Shutter 120.1 36 0 -0.2 EIAJ ET-7201A compliant 1100.7 (Units: mm) MCR18 Resistors !Makeup of the part number 3-digit or 4-digit IEC coding system Part No. Nominal resistance Packaging / Processing specifications Part No. MCR18 Code EZH PZHI Packaging Paper tape Bulk case Standard ordering unit(pcs) Resistance tolerance F 1% J 5% Specify "J" for jumper also. Special part number Blank L 10 or more (F class) 1 or more (J class) Up to 10 (F class) Up to 1 (J class) 5,000 5,000 !Dimensions 3.45 3.40 3.35 LENGTH (mm) 1.80 JIS C 5201-1 4.4.2 SAMPLE SIZE : n=20pcs MICROMETER 1.75 1.70 JIS C 5201-1 4.4.2 SAMPLE SIZE : n=20pcs MICROMETER 0.75 0.70 0.65 THICKNESS (mm) JIS C 5201-1 4.4.2 SAMPLE SIZE : n=20pcs MICROMETER 3.30 WIDTH (mm) 3.25 3.20 3.15 3.10 3.05 3.00 2.95 0.1 1 10 100 1k 10k 100k 1M 10M RESISTANCE () 1.65 1.60 1.55 1.50 1.45 1.40 0.1 1 10 100 1k 10k 100k 1M 10M RESISTANCE () 0.60 0.55 0.50 0.45 0.40 0.35 0.1 1 10 100 1k 10k 100k 1M 10M RESISTANCE () Fig.2 Dimensions (length) Fig.3 Dimensions (width) Fig.4 Dimensions (thickness) !Electrical characteristics TEMPERATURE COEFFICIENT (ppm/C) 8.0 6.0 DC RESISTANCE (%) 900 700 500 300 100 -100 -300 -500 -700 -900 0.1 1 JIS C 5201-1 4.5 SAMPLE SIZE : n=20pcs 20C 65%RH 4.0 2.0 0.0 -2.0 -4.0 -6.0 -8.0 0.1 1 10 100 1k 10k 100k 1M 10M RESISTANCE () JIS C 5201-1 4.8 SAMPLE SIZE : n=10pcs 25C / -55C 25C / 125C 4.0 3.0 2.0 R/R (%) JIS C 5201-1 4.13 SAMPLE SIZE : n=10pcs RATED VOLTAGEx2.5TIMES : 2s LIMITING ELEMENT VOLTAGEx2 : 400V 1.0 0.0 -1.0 -2.0 -3.0 10 100 1k 10k 100k 1M 10M RESISTANCE () -4.0 0.1 1 10 100 1k 10k 100k1M 10M RESISTANCE () Fig.5 Resistance Fig.6 Variation resistance with temperature Fig.7 Overload MCR18 Resistors 2.0 1.5 RESISTANCE CHANGE (%) 2.0 JIS C 5201-1 4.18 SAMPLE SIZE : n=10pcs SOLDERING CONDITION : 260C 10s 4.0 1.5 1.0 R/R (%) 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 0.1 1 10 100 1k 10k 100k 1M 10M RESISTANCE () RESISTANCE CHANGE (%) JIS C 5201-1 4.19 SAMPLE SIZE : n=10pcs -55C / 125C 5cyc 3.0 2.0 1.0 0 -1.0 -2.0 -3.0 JIS C 5201-1 4.24 SAMPLE SIZE : n=10pcs 40C 93%RH WITH NO LOAD 1,000h 0.5 0.0 -0.5 -1.0 -1.5 -2.0 0.1 1 10 100 1k 10k 100k 1M 10M RESISTANCE () -4.0 0.1 1 10 100 1k 10k 100k 1M 10M RESISTANCE () Fig.8 Resistance to soldering heat Fig.9 Rapid change of temperature Fig.10 Damp heat, steady state 4.0 3.0 RESISTANCE CHANGE (%) 4.0 JIS C 5201-1 4.25.1 SAMPLE SIZE : n=10pcs 70C 1,000h OVERLOAD : THE RATED VOLTAGE 2.0 3.0 RESISTANCE CHANGE (%) JIS C 5201-1 4.25.3 SAMPLE SIZE : n=10pcs 155C WITH NO LOAD 1,000h 1.5 1.0 JIS C 5201-1 4.29 SAMPLE SIZE : n=10pcs IPA, 5min. 2.0 1.0 0 -1.0 -2.0 -3.0 -4.0 0.1 1 2.0 R/R (%) 1.0 0 -1.0 -2.0 -3.0 0.5 0.0 -0.5 -1.0 -1.5 10 100 1k 10k 100k 1M 10M RESISTANCE () -4.0 0.1 1 10 100 1k 10k 100k 1M 10M RESISTANCE () -2.0 0.1 1 10 100 1k 10k 100k 1M 10M RESISTANCE () Fig.11 Endurance (at 70C) Fig.12 Endurance Fig.13 Resistance to solvents 2.0 1.5 RESISTANCE CHANGE (%) JIS C 5201-1 4.33 SAMPLE SIZE : n=10pcs ENDURANCE WITH 90mm WIDTH 1.0 0.5 0 -0.5 -1.0 -1.5 -2.0 0.1 1 10 100 1k 10k 100k 1M 10M RESISTANCE () Fig.14 Bend strength of the end face plating |
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