Low Ohmic Thick Film Chip Resistors MCR18 (3216 size (1206 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) ROHM resistors have approved ISO9001- / ISO/TS 19649- certification. Ratings Design and specifications are subject to change without notice. Carefully check the specification sheet before using or ordering it. 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= P×R E: Rated voltage (V) P: Rated power (W) Limiting element voltage R: Nominal resistance (Ω) Nominal resistance 1.51(9.1Ω) See Table 1. −55°C to +155°C Operating temperature Table 1 Resistance tolerance F (±1%) J (±5%) Special specification Resistance range (Ω) Resistance temperature coefficient (ppm/°C) L 0.1 to 0.13 (E24) 400±200 L 0.15 to 9.1 (E24) S 0.047 to 0.091 (E24) 500±300 L 0.1 to 0.13 (E24) 400±200 L 0.15 to 0.91 (E24) ±250 S 0.047 to 0.091 (E24) ±250 500±300 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. www.rohm.com c 2011 ROHM Co., Ltd. All rights reserved. ○ 1/3 2011.12 - Rev.G MCR18 (3216 size (1206 size) : 1 / 4W) Data Sheet Characteristics Guaranteed value Resistor type Item Test conditions (JIS C 5201-1) J : ±5% F : ±1% Resistance JIS C 5201-1 4.5 Load voltage : A Measuring method : measure upper termination by 4 proves. Upper termination Variation of resistance with temperature See Table.1 JIS C 5201-1 4.8 Measurement : +25 / −55 / +25 / +125°C Overload ± (2.0%+0.005Ω) JIS C 5201-1 4.13 Rated voltage (current) ×2.5, 2s. A new uniform coating of minimum of 95% of the surface being immersed and no soldering damage. JIS C 5201-1 4.17 Rosin-Ethanol (25%WT) Soldering condition : 235±5°C Duration of immersion : 2.0±0.5s. ± (1.0%+0.005Ω) No remarkable abnormality on the appearance. JIS C 5201-1 4.18 Soldering condition : 260±5°C Duration of immersion : 10±1s. ± (1.0%+0.005Ω) JIS C 5201-1 4.19 Test temp. : −55°C to +125°C 5cyc ± (3.0%+0.005Ω) JIS C 5201-1 4.24 40°C, 93%RH Test time : 56days ± (3.0%+0.005Ω) JIS C 5201-1 4.25.1 70°C, Rated voltage 1.5h : ON − 0.5h : OFF Test time : 1,000h ± (3.0%+0.005Ω) JIS C 5201-1 4.25.3 155°C Test time : 1,000h to 1,048h ± (0.5%+0.005Ω) JIS C 5201-1 4.29 23°C±5°C Solvent : 2-propanol Without open. JIS C 5201-1 4.33 Solderability Resistance to soldering heat Rapid change of temperature Damp heat, steady state Endurance at 70°C Endurance Component solvent resistance Bend strength of the end face plating Prove Dimensions (Unit : mm) 1 0.5±0.25 2 3 3.2±0.15 1 Resistive element (Oxide metal thick film) 2 Silver thick film electrode 3 Nickel electrode 4 Sn electrode 5 Alumina substrate 6 Overcoating (Glass) 4 1.6±0.15 5 0.55±0.1 0.5±0.25 Material No. 6 www.rohm.com c 2011 ROHM Co., Ltd. All rights reserved. ○ 2/3 2011.12 - Rev.G MCR18 (3216 size (1206 size) : 1 / 4W) Data Sheet Packaging Reel Taping P0 P2 P1 φD0 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 (Unit: mm) Label EIAJ ET-7200B compliant (Unit: mm) A φ180 B 0 −1.5 φ60 C +1 0 9 +1.0 0 W F E 8.0±0.3 3.5±0.05 1.75±0.1 D0 D φ1.5 +0.1 0 A2 1.95 B2 +0.1 −0.05 3.5 +0.15 −0.05 P0 P1 P2 T2 4.0±0.1 4.0±0.1 2.0±0.05 Max. 1.1 φ13±0.2 Part No. Explanation M C R 1 8 Part No. E Z H J L Resistance tolerance Special part number F J ±1% ±5% L 0.1 to 9.1Ω (class F) 0.1 to 0.91Ω (class J) S 0.047 to 0.091Ω Nominal resistance Resistance code, 3 or 4 digits. Resistance Resistance tolerance code +Special P/N FL,FS,JS JL : : 4 digits 3 digits Packaging Specifications Code Part No. Code MCR18 EZH Resistance tolerance J(±5%) F(±1%) Packaging specifications Reel φ180mm (7inch) Paper tape (4mm Pitch) Basic ordering unit(pcs) 5,000 Reel (φ180mm) : Compatible with JEITA standard "EIAJ ET-7200B" : Standard product www.rohm.com c 2011 ROHM Co., Ltd. All rights reserved. ○ 3/3 2011.12 - Rev.G Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law. Thank you for your accessing to ROHM product informations. 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