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 70°C. 0.25W (1 / 4W) at 70°C 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= P×R P: Rated power (W) R: Nominal resistance (Ω) Nominal resistance Operating temperature Limiting element voltage See Table 1. −55°C to +155°C 200V MCR18 Resistors Jumper type Table 1 Max. 50mΩ Resistance Rated current Resistance tolerance 2A Operating temperature −55°C to +155°C Resistance range (Ω) Resistance temperature coefficient (ppm / °C) 0.1 ≤ R < 0.15 (E24) F (±1%) 0.15 ≤ R < 10 400±200 ±250 (E24) 10 ≤ R ≤ 2.2M (E24,96) ±100 0.1 ≤ R < 0.15 (E24) J (±5%) 400±200 0.15 ≤ R < 1 (E24) ±250 500±350 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. 50mΩ Variation of resistance with temperature Overload Solderability Resistance to soldering heat Rapid change of temperature See Table.1 ± (2.0%+0.1Ω) Max. 50mΩ 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 / +125°C JIS C 5201-1 4.13 Rated voltage (current) ×2.5, 2s. Limiting Element Voltage×2 : 400V JIS C 5201-1 4.17 Rosin·Ethanol (25%WT) Soldering condition : 235±5°C Duration of immersion : 2.0±0.5s. ± (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~+125°C 5cyc ± (3.0%+0.1Ω) Max. 100mΩ JIS C 5201-1 4.24 40°C, 93%RH Test time : 1,000h~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~1,048h ± (3.0%+0.1Ω) Max. 100mΩ JIS C 5201-1 4.25.3 155°C Test time : 1,000h~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 Bend strength of the end face plating Test conditions (JIS C 5201-1) Max. 50mΩ ± (1.0%+0.05Ω) Without mechanical damage such as breaks. JIS C 5201-1 4.33 MCR18 Resistors !External dimensions (Units : mm) 1 0.5±0.25 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 1.6±0.15 5 0.55±0.1 0.5±0.25 3.2±0.15 Material No. 2 6 !Packaging Reel Taping P0 P2 P2 φD2 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 φ180 −3 +1 φ60 0 +1.0 9 0 φ13±0.2 E A2 1.95 +0.1 −0.05 B2 3.5 +0.15 −0.05 8.0±0.3 3.5±0.05 1.75±0.1 D2 P2 P2 P2 T2 4.0±0.1 4.0±0.1 2.0±0.05 Max. 1.1 (Units: mm) A F φ1.5 +0.1 0 Bulk case Slider Shutter 12±0.1 36 EIAJ ET-7201A compliant 0 −0.2 110±0.7 (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 10Ω or more (F class) 1Ω or more (J class) Up to 10Ω (F class) Up to 1Ω (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 (Ω) RESISTANCE (Ω) RESISTANCE (Ω) 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 20°C 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 (Ω) Fig.5 Resistance 900 4.0 JIS C 5201-1 4.8 SAMPLE SIZE : n=10pcs 25°C / −55°C 25°C / 125°C 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 VOLTAGE×2.5TIMES : 2s LIMITING ELEMENT VOLTAGE×2 : 400V 3.0 ∆R/R (%) 8.0 TEMPERATURE COEFFICIENT (ppm/°C) !Electrical characteristics 0.1 1 10 100 1k 10k 100k 1M 10M RESISTANCE (Ω) Fig.6 Variation resistance with temperature −4.0 0.1 1 10 100 1k 10k 100k1M 10M RESISTANCE (Ω) 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 (Ω) Fig.11 Endurance (at 70°C) 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 (Ω) Fig.14 Bend strength of the end face plating 0.1 1 10 100 1k 10k 100k 1M 10M RESISTANCE (Ω) 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 (Ω) ∆R/R (%) −1.0 0.1 Fig.10 Damp heat, steady state JIS C 5201-1 4.25.3 SAMPLE SIZE : n=10pcs 155°C 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 (Ω) Fig.8 Resistance to soldering heat 3.0 2.0 −3.0 RESISTANCE (Ω) JIS C 5201-1 4.25.1 SAMPLE SIZE : n=10pcs 70°C 1,000h OVERLOAD : THE RATED VOLTAGE JIS C 5201-1 4.24 SAMPLE SIZE : n=10pcs 40°C 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 −55°C / 125°C 5cyc 1.5 1.0 −2.0 4.0 2.0 JIS C 5201-1 4.18 SAMPLE SIZE : n=10pcs SOLDERING CONDITION : 260°C 10s 1.5 −2.0 0.1 1 10 100 1k 10k 100k 1M 10M RESISTANCE (Ω) Fig.13 Resistance to solvents