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| High Power Low Ohmic Chip Resistors LTR10 (2012 size : 1 / 2W) Features 1) Improved welding strength The structure of longer electrodes provides the wider welding area than the chip resistors with normal electrodes, and this enhanced the solder welding strength. 2) Increased surge-resistance This is achieved by Rohm's original trimming technology plus resistive element patterning. 3) High-power tolerance Two times of the rated power is guaranteed than the normal-electrode resistors. 4) ROHM resistors are ISO-9001 & ISO/TS16949 certified. Design and specifications are subject to change without notice. Carefully check the specification sheet before using or ordering it. Applications Automotive, industrial and power supply. 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 POWER LOAD (%) Specifications 0.5W (1 /2W) at 70C 60 40 20 0 -55 0 70 100 155 AMBIENT TEMPERATURE (C) Fig.1 Rated voltage Rated current The voltage rating is calculated by the following equation. E= I= PxR P/R E : Rated voltage (V) I : Rated current (A) P : Rated power (W) R : Nominal resistance () Nominal resistance Operating temperature Table 1 Resistance range () See Table 1. -55C to + 155C Resistance tolerance F (1%) J (5%) Special part number Resistance temperature coefficient (ppm/C) 0.047 to 9.1 S L 150 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 2009 ROHM Co., Ltd. All rights reserved. 1/3 2009.10 - Rev.B LTR10 Characteristics Item Guaranteed value Resistor type Test conditions (JIS C 5201-1) JIS C 5201-1 4.5 Voltage : A Measuring method : Measure under termination by 4 probes Under termination Terminal Data Sheet Resistance F : 1% J : 5% Variation of resistance with temperature See Table.1 JIS C 5201-1 4.8 Measurement : -55 / +25 / +125C JIS C 5201-1 4.13 Rated voltage (current) x 2.5, 2s. 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 to +125C 5cyc JIS C 5201-1 4.24 40C, 93%RH Test time : 1,000h to 1,048h JIS C 5201-1 4.25.1 Rated voltage (current), 70C 1.5h : ON - 0.5h : OFF Test time : 1,000h to 1,048h JIS C 5201-1 4.25.3 155C Test time : 1,000h to 1,048h JIS C 5201-1 4.29 235C, Immersion cleaning, 50.5min. Solvent : 2-propanol JIS C 5201-1 4.33 Overload (2.0%+0.1) Solderability A new uniform coating of minimum of 95% of the surface being immersed and no soldering damage. (1.0%+0.005) No remarkable abnormality on the appearance. (1.0%+0.005) Resistance to soldering heat Rapid change of temperature Damp heat, steady state (3.0%+0.005) Endurance at 70C (3.0%+0.005) Endurance (3.0%+0.005) Resistance to solvent Bend strength of the end face plating (0.5%+0.005) Without open. www.rohm.com c 2009 ROHM Co., Ltd. All rights reserved. 2/3 2009.10 - Rev.B LTR10 Dimensions (Unit : mm) Data Sheet 3 4 5 W a 2 No. b 6 1 2 Material Resistive element Silver thick film electrode Silver thick film side electrode Nickel electrode Sn electrode Overcoating Alumina substrate R10 a L 1 7 b t 3 4 5 6 Size code 2012 (0805) L 1.2 0.1 W 2.0 0.1 t 0.55 0.1 a 0.3 0.2 b 0.35 0.2 7 Packaging Reel Taping P0 P2 P1 D0 E F W 08 06 04 02 02 04 06 08 A B D A0 Heat crimp cover/Tape Thick paper (Underside paper tape) Chip resistor Square punchout hole mount T2 C Label EIAJ ET-7200B compliant (Unit: mm) (Unit: mm) A 180 0 -1.5 B 60 +1 0 9 C +1.0 0 D 130.2 W 8.00.3 D0 1.5 +0.1 0 F 3.50.05 P0 4.00.1 E 1.750.1 P1 4.00.1 A0 1.65 +0.2 -0.1 B0 2.4 +0.2 -0.1 P2 2.00.05 T2 Max. 1.1 Part No. Explanation LTR10 Part No. EVH F J J S Nominal resistance Resistance code, 3 or 4 digits. Resistance tolerance Special part number 1% 5% S 0.011 to 0.091 L 0.1 Resistance tolerance FS, FL, JS : JL : Resistance code 4 digits 3 digits Packaging Specifications Code Part No. LTR10 Code EVH Resistance tolerance F(1%) J(5%) Packaging specifications Paper tape (4mm Pitch) Reel 180mm (7inch) Basic ordering unit (pcs) 5,000 Reel (180mm) : Compatible with JEITA standard "EIAJ ET-7200B" : Standard product www.rohm.com c 2009 ROHM Co., Ltd. All rights reserved. 3/3 2009.10 - Rev.B 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, fuel-controller 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. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com (c) 2009 ROHM Co., Ltd. All rights reserved. R0039A |
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