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 Specifications Power must be derated according to the power derating curve in Figure 1 when ambient temperature exceeds 70C. 0.25W (1 / 4W) at 70C POWER LOAD (%) 100 80 60 40 20 0 -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 Limiting element voltage See Table 1. -55C to +155C 200V MCR18 Resistors Jumper type Table 1 Max. 50m Resistance Rated current Resistance tolerance 2A Operating temperature -55C to +155C Resistance range () Resistance temperature coefficient (ppm / C) 0.1 R < 0.15 (E24) F (1%) 0.15 R < 10 400200 250 (E24) 10 R 2.2M (E24,96) 100 0.1 R < 0.15 (E24) J (5%) 400200 0.15 R < 1 (E24) 250 500350 1.0 R < 2.2 (E24) 2.2 R < 10 (E24) 500 10 R 10M (E24) 200 !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 Guaranteed value Resistor type Jumper type J : 5% F : 1% Max. 50m Variation of resistance with temperature Overload Solderability Resistance to soldering heat Rapid change of temperature See Table.1 (2.0%+0.1) Max. 50m A new uniform coating of minimum of 95% of the surface being immersed and no soldering damage. 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. (1.0%+0.05) Max. 50m No remarkable abnormality on the appearance. JIS C 5201-1 4.18 Soldering condition : 2605C Duration of immersion : 101s. (1.0%+0.05) Max. 50m JIS C 5201-1 4.19 Test temp. : -55C~+125C 5cyc (3.0%+0.1) Max. 100m JIS C 5201-1 4.24 40C, 93%RH Test time : 1,000h~1,048h (3.0%+0.1) Max. 100m JIS C 5201-1 4.25.1 Rated voltage (current), 70C 1.5h : ON - 0.5h : OFF Test time : 1,000h~1,048h (3.0%+0.1) Max. 100m JIS C 5201-1 4.25.3 155C Test time : 1,000h~1,048h (1.0%+0.05) Max. 50m JIS C 5201-1 4.29 235C, Immersion cleaning, 50.5min. Solvent : 2-propanol Damp heat, steady state Endurance at 70C Endurance Resistance to solvent Bend strength of the end face plating Test conditions (JIS C 5201-1) Max. 50m (1.0%+0.05) Without mechanical damage such as breaks. JIS C 5201-1 4.33 MCR18 Resistors !External dimensions (Units : mm) 1 0.50.25 3 1 Resistive element (Oxide metal thick film) 2 Silver palladium thick film electrode 3 Nickel electrode 4 Sn/Pb or Sn electrode 5 Alumina substrate 6 Overcoating (glass) 4 1.60.15 5 0.550.1 0.50.25 3.20.15 Material No. 2 6 !Packaging Reel Taping P0 P2 P2 D2 E F W 02 04 06 08 06 D 04 B 02 A 08 B2 A2 Heat crimp cover/Tape Thick paper (Underside paper tape) Chip resistor Square punchout hole mount T2 C (Units: mm) Label W EIAJ ET-7200A compliant B C D 0 180 -3 +1 60 0 +1.0 9 0 130.2 E A2 1.95 +0.1 -0.05 B2 3.5 +0.15 -0.05 8.00.3 3.50.05 1.750.1 D2 P2 P2 P2 T2 4.00.1 4.00.1 2.00.05 Max. 1.1 (Units: mm) A F 1.5 +0.1 0 Bulk case Slider Shutter 120.1 36 EIAJ ET-7201A compliant 0 -0.2 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 Resistance tolerance F Standard ordering unit(pcs) Paper tape Bulk case 5,000 5,000 Special part number 1% J 5% Specify "J" for jumper also. Blank 10 or more (F class) 1 or more (J class) Up to 10 (F class) Up to 1 (J class) L !Dimensions 1.80 3.45 JIS C 5201-1 4.4.2 SAMPLE SIZE : n=20pcs MICROMETER 3.40 3.35 0.75 JIS C 5201-1 4.4.2 SAMPLE SIZE : n=20pcs MICROMETER 1.75 1.70 THICKNESS (mm) 0.65 WIDTH (mm) LENGTH (mm) 3.30 3.25 3.20 3.15 3.10 JIS C 5201-1 4.4.2 SAMPLE SIZE : n=20pcs MICROMETER 0.70 1.65 0.60 1.60 0.55 1.55 0.50 1.50 0.45 1.45 0.40 3.05 3.00 2.95 0.1 1 1.40 10 100 1k 10k 100k 1M 10M 0.1 1 10 100 1k 10k 100k 1M 10M 0.35 0.1 1 RESISTANCE () RESISTANCE () RESISTANCE () Fig.3 Dimensions (width) Fig.2 Dimensions (length) 10 100 1k 10k 100k 1M 10M Fig.4 Dimensions (thickness) JIS C 5201-1 4.5 SAMPLE SIZE : n=20pcs 20C 65%RH DC RESISTANCE (%) 6.0 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 () Fig.5 Resistance 900 4.0 JIS C 5201-1 4.8 SAMPLE SIZE : n=10pcs 25C / -55C 25C / 125C 700 500 2.0 300 100 -100 1.0 0.0 -1.0 -300 -2.0 -500 -3.0 -700 -900 JIS C 5201-1 4.13 SAMPLE SIZE : n=10pcs RATED VOLTAGEx2.5TIMES : 2s LIMITING ELEMENT VOLTAGEx2 : 400V 3.0 R/R (%) 8.0 TEMPERATURE COEFFICIENT (ppm/C) !Electrical characteristics 0.1 1 10 100 1k 10k 100k 1M 10M RESISTANCE () Fig.6 Variation resistance with temperature -4.0 0.1 1 10 100 1k 10k 100k1M 10M RESISTANCE () Fig.7 Overload MCR18 Resistors 2.0 0 0.0 -0.5 -1.0 -1.0 -1.5 -1.5 0.1 1 -2.0 10 100 1k 10k 100k 1M 10M 0.1 1 -2.0 1.0 1.0 0.5 -1.0 0.0 -0.5 -1.0 -3.0 -1.5 -4.0 -4.0 10 100 1k 10k 100k 1M 10M RESISTANCE () Fig.11 Endurance (at 70C) 2.0 JIS C 5201-1 4.33 SAMPLE SIZE : n=10pcs ENDURANCE WITH 90mm WIDTH 1.5 RESISTANCE CHANGE (%) 2.0 0 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 0.1 1 10 100 1k 10k 100k 1M 10M RESISTANCE () Fig.12 Endurance JIS C 5201-1 4.29 SAMPLE SIZE : n=10pcs IPA, 5min. 1.5 -3.0 1 10 100 1k 10k 100k 1M 10M 2.0 -2.0 0.1 1 RESISTANCE () R/R (%) -1.0 0.1 Fig.10 Damp heat, steady state JIS C 5201-1 4.25.3 SAMPLE SIZE : n=10pcs 155C WITH NO LOAD 1,000h 3.0 RESISTANCE CHANGE (%) RESISTANCE CHANGE (%) 0 -2.0 -4.0 10 100 1k 10k 100k 1M 10M 4.0 1.0 0 -1.0 Fig.9 Rapid change of temperature 4.0 2.0 1.0 RESISTANCE () Fig.8 Resistance to soldering heat 3.0 2.0 -3.0 RESISTANCE () JIS C 5201-1 4.25.1 SAMPLE SIZE : n=10pcs 70C 1,000h OVERLOAD : THE RATED VOLTAGE JIS C 5201-1 4.24 SAMPLE SIZE : n=10pcs 40C 93%RH WITH NO LOAD 1,000h 3.0 RESISTANCE CHANGE (%) 0.5 R/R (%) RESISTANCE CHANGE (%) 1.0 0.5 -0.5 JIS C 5201-1 4.19 SAMPLE SIZE : n=10pcs -55C / 125C 5cyc 1.5 1.0 -2.0 4.0 2.0 JIS C 5201-1 4.18 SAMPLE SIZE : n=10pcs SOLDERING CONDITION : 260C 10s 1.5 -2.0 0.1 1 10 100 1k 10k 100k 1M 10M RESISTANCE () Fig.13 Resistance to solvents