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 maximum operating voltage, the voltage rating is equal to the maximum operating voltage. Max. operating voltage 200V Max. overload voltage 400V Max. intermittent overload voltage 400V E: Rated voltage (V) E= PxR P: Rated power (W) R: Nominal resistance () Nominal resistance Operating temperature See Table 1. -55C to + 155C MCR18 Resistors Table 1 Jumper type Resistance Max. 50m Rated current 2A Peak current 10A Operating temperature -55C to + 155C Resistance tolerance F ( 1%) J ( 5%) Resistance range () Resistance temperature coefficient (ppm / C) 10 R 2.2M (E24,96) 1.0 R < 2.2 (E24) 500 350 2.2 R < 10 (E24) 500 10 R 10M (E24) 200 100 !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. MCR18 Resistors !Characteristics Characteristics DC resistance Specifications Chip resistance Jumper type F: 1% J: 5% Resistance temperature characteristics Short time overload Max. 50m See Table 1. (2.0% + 0.1) Max. 50m Min. 1,000M between terminal and board Test method JIS C 5202 5.1 Applied voltage: A JIS C 5202 5.2 Test conditions: + 25 / -55 / + 25 / + 125C JIS C 5202 5.5 Rated voltage (current): x 2.5, 5s. Maximum overload voltage: 400V JIS C 5202 5.6 Test voltage: 100V, 1min. Assembled state Metal block observation point A Insulation resistance Insulation plate Test resistor Metal plate Observation Insulation sheath R 0.5 point B Withstand voltage Do not damage insulation or cause a short circuit. Intermittent overload (5.0% + 0.1) Terminal strength (against bending of circuit board) (1.0% + 0.05) Max. 50m There must be no mechanical damage. Resistance to soldering heat (1.0% + 0.05) Max. 50m Outside must not be noticeably damaged. Solderability Max. 50m 95% of terminal surface must be covered by new soldering, and there must be no soldering corrosion. Spring-loaded pressure JIS C 5202 5.7 Test voltage: 500V JIS C 5202 5.8 Rated voltage (current): x 2.5 (1s: ON - 25s: OFF) x 10,000cyc. JIS C 5202 6.1 JIS C 5202 6.4 Soldering conditions: 260 5C Soldering time: 10 1s. JIS C 5202 6.5 Rosin methanol: (25%WT) Soldering conditions: 235 5C Soldering time: 2.0 0.5s. JIS C 5202 7.2 155C Test time: 1,000 to 1,048 hrs. Resistance to dry heat (3.0% +0.1) Max. 100m Endurance (rated load) (3.0% +0.1) Max. 100m JIS C 5202 7.10 Rated voltage (current), 70C 1.5h: ON - 0.5h: OFF Test time: 1,000 to 1,048 hrs. Endurance (under load in damp environment) (3.0% +0.1) Max. 100m JIS C 5202 7.9 Rated voltage (current), 60C, 95%RH 1.5h: ON -0.5h: OFF Test time: 1,000 to 1,048 hrs. Resistance to humidity (steady state) (3.0% +0.1) Max. 100m JIS C 5202 7.5 85C, 85%RH Test time: 1,000 to 1,048 hrs. Temperature cycling (1.0% +0.05) Max. 50m JIS C 5202 7.4 Test temperature: -55C to + 125C 100cyc. Resistance to solvents (0.5% +0.05) Max. 50m Markings must not be dissolved away. JIS C 5202 6.9 Room temperature, static immersion, 1 min. Solvent: Isopropyl alcohol MCR18 Resistors !External dimensions (Units: mm) Material No. 0.5 0.25 Thick dielectric glaze of ruthenium (only silver used for jumper) Thick film of palladium-silver for primary electrode Nickel-coated secondary electrode 0.55 0.1 0.5 0.25 3.2 0.15 External electrode coated with tin and lead Alumina substrate 1.6 0.15 Overcoating !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 F E 8.0 0.3 3.5 0.05 1.75 0.1 EIAJ ET-7001 compliant (Units: mm) A 180 B 0 -3 60 +1 0 C D 9 0.3 13 0.2 268 1.5 100 0.8 9.4 0.5 13 0.3 330 2 Min. 80 9.5 0.5 13 0.2 D2 1.5 + 0.1 0 A2 1.95 + 0.1 -0.05 B2 3.5 + 0.15 - 0.05 P2 P2 P2 T2 4.0 0.1 4.0 0.1 2.0 0.05 Max. 1.1 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 FZH QZH PZHI Packaging Resistance tolerance Standard ordering unit(pcs) Paper tape Bulk case 5,000 10,000 20,000 5,000 Shipped to World wide World wide World wide World wide F Special part number 1% J 5% Specify "J" for jumper also. Blank 10 or more (F class) 1 or more (J class) !Dimensions 1.80 3.45 JIS C 5202 4.3 SAMPLE SIZE : n = 20pcs MICROMETER 3.40 3.35 0.75 JIS C 5202 4.3 SAMPLE SIZE : n = 20pcs MICROMETER 1.75 0.65 3.20 3.15 3.10 THICKNESS (mm) WIDTH (mm) LENGTH (mm) 1.70 3.30 3.25 JIS C 5202 4.3 SAMPLE SIZE : n = 20pcs MICROMETER 0.70 1.65 1.60 1.55 1.50 0.60 0.55 0.50 0.45 3.05 1.45 3.00 2.95 0.47 1 10 100 1k 10k 100k 1M 10M 1.40 0.40 0.47 1 10 100 1k 10k 100k 1M 10M 0.35 0.47 1 10 100 1k 10k 100k 1M 10M RESISTANCE () RESISTANCE () RESISTANCE () Fig.2 Dimensions (length) Fig.3 Dimensions (width) Fig.4 Dimensions (thickness) !Electrical characteristics 900 DC RESISTANCE (%) 4.0 2.0 0.0 500 2.0 100 - 3.0 - 700 0.47 1 10 100 1k 10k 100k 1M 10M - 900 0.0 - 2.0 - 500 -6.0 1.0 - 1.0 - 300 -4.0 JIS C 5202 5.5 SAMPLE SIZE : n = 10pcs RATED VOLTAGE x 2.5TIMES : 5s MAXIMUM OVERLOAD VOLTAGE : 400V 3.0 300 - 100 -2.0 -8.0 4.0 JIS C 5202 5.2 SAMPLE SIZE : n = 10pcs 25C / -55C 25C / 125C 700 R / R (%) JIS C 5202 5.1 SAMPLE SIZE : n = 20pcs 20C 65%RH 6.0 TEMPERATURE COEFFICIENT (ppm/C) 8.0 0.47 1 10 100 1k 10k 100k 1M 10M - 4.0 0.47 1 10 100 1k 10k 100k 1M 10M RESISTANCE () RESISTANCE () RESISTANCE () Fig.5 DC resistance Fig.6 Resistance temperature characteristics Fig.7 Short time overload MCR18 Resistors 20 10 JIS C 5202 5.7 SAMPLE SIZE : n = 10pcs METALLIC BLOCK METHOD : TEST VOLTAGE 500V 60S 1.5 1.0 0.5 0.0 - 0.5 5 - 1.0 2 - 1.5 0.47 1 - 2.0 10 100 1k 10k 100k 1M 10M 1.0 0.0 -1.0 -2.0 -3.0 -4.0 -5.0 0.47 1 -6.0 10 100 1k 10k 100k 1M 10M 0.47 1 10 100 1k 10k 100k 1M 10M Fig.8 Insulation resistance Fig.9 Withstand voltage Fig.10 Intermittent overload 2.0 0 - 1.0 - 1.5 1 1.0 0.5 0 -0.5 10 100 1k 10k 100k 1M 10M -1.5 0.47 1 Terminal strength (bending strength characteristics) 0 - 1.0 - 2.0 - 3.0 0.47 1 10 100 1k 10k 100k 1M 10M RESISTANCE () Fig.14 Endurance (rated load) 0.47 1 2.0 1.0 0 -1.0 -2.0 -3.0 -4.0 10 100 1k 10k 100k 1M 10M RESISTANCE () Fig.13 Resistance to dry heat 0.47 1 10 100 1k 10k 100k 1M 10M RESISTANCE () Fig.15 Endurance (under load in damp environment) JIS C 5202 7.5 SAMPLE SIZE : n = 10pcs 85C 85%RH WITH NO LOAD 1,000h 3.0 RESISTANCE CHANGE (%) 1.0 -3.0 4.0 JIS C 5202 7.9 SAMPLE SIZE : n = 10pcs 60C 95%RH 1,000h OVERLOAD : THE RATED VOLTAGE 3.0 RESISTANCE CHANGE (%) 2.0 -2.0 -4.0 10 100 1k 10k 100k 1M 10M 4.0 JIS C 5202 7.10 SAMPLE SIZE : n = 10pcs 70C 1,000h OVERLOAD : THE RATED VOLTAGE 0 Fig.12 Resistance to soldering heat 4.0 3.0 1.0 RESISTANCE () RESISTANCE () Fig.11 2.0 - 1.0 -1.0 -2.0 JIS C 5202 7.2 SAMPLE SIZE : n = 10pcs 155C WITH NO LOAD 1,000h 3.0 RESISTANCE CHANGE (%) 0.5 4.0 JIS C 5202 6.4 SAMPLE SIZE : n = 10pcs SOLDERING CONDITION : 260C 10s 1.5 RESISTANCE CHANGE (%) JIS C 5202 6.1 SAMPLE SIZE : n = 10pcs ENDURANCE WITH 90mm WIDTH - 0.5 RESISTANCE CHANGE (%) 2.0 RESISTANCE () 1.0 - 4.0 3.0 RESISTANCE () 1.5 0.47 4.0 RESISTANCE () 2.0 - 2.0 JIS C 5202 5.8 SAMPLE SIZE : n = 10pcs RATED VOLTAGE x 2.5TIMES 1s-ON 25s-OFF 10,000cyc MAXIMUM INTERMITTENT OVERLOAD VOLTAGE : 400V 5.0 RESISTANCE CHANGE (%) 50 1 RESISTANCE CHANGE (%) 6.0 2.0 JIS C 5202 5.6 SAMPLE SIZE : n = 10pcs METALLIC BLOCK METHOD : TEST VOLTAGE 100V 60s RESISTANCE CHANGE (%) 10 INSULATION RESISTANCE ( x 10 ) 100 2.0 1.0 0 -1.0 -2.0 -3.0 -4.0 0.47 1 10 100 1k 10k 100k 1M 10M RESISTANCE () Fig.16 Resistance to humidity (steady state) MCR18 Resistors 2.0 2.0 JIS C 5202 7.4 SAMPLE SIZE : n = 10pcs - 55C / 125C 100cyc 1.0 1.0 0.5 0.5 0.0 - 0.5 JIS C 5202 6.9 SAMPLE SIZE : n = 10pcs IPA, 1min. 1.5 R / R (%) R / R (%) 1.5 0.0 - 0.5 - 1.0 - 1.0 - 1.5 - 1.5 - 2.0 - 2.0 0.47 1 10 100 1k 10k 100k 1M 10M 0.47 1 10 100 1k 10k 100k 1M 10M RESISTANCE () RESISTANCE () Fig.17 Temperature cycling Fig.18 Resistance to solvents