High Power Chip Resistors <Wide Terminal type> LTR50 (5025 size : 1W) 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. Applications Automotive, industrial and power supply. 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. 1W at 70°C 100 POWER LOAD (%) 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 See Table 1. Operating temperature D(±0.5%) F(±1%) J(±5%) Limiting element voltage 200V −55°C to + 155°C Table 1 Resistance tolerance D (±0.5%) F (±1%) Resistance range (Ω) 10 to 130k (E24) 1 to 1M (E24) J (±5%) www.rohm.com c 2010 ROHM Co., Ltd. All rights reserved. ○ Resistance temperature coefficient (ppm/°C) ±100 ±100 ±200 1/3 2010.09 - Rev.F LTR50 Data Sheet 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 Guaranteed value Resistor type Item J : ±5% F : ±1% D : ±0.5% Resistance Variation of resistance with temperature Resistance to soldering heat JIS C 5201-1 4.5 JIS C 5201-1 4.8 Measurement : −55 / +25 / +125°C See Table.1 JIS C 5201-1 4.13 Rated voltage (current) ×2.5, 2s. Maximum overload voltage : 200V ± (2.0%+0.1Ω) Overload Solderability Test conditions (JIS C 5201-1) A new uniform coating of minimum of 95% of the surface being immersed and no soldering damage. ± (1.0%+0.05Ω) No remarkable abnormality on the appearance. Rapid change of temperature JIS C 5201-1 4.19 Test temp. : −55°C to +125°C 5cyc ± (3.0%+0.1Ω) JIS C 5201-1 4.24 40°C, 93%RH Test time : 1,000h to 1,048h ± (3.0%+0.1Ω) JIS C 5201-1 4.25.1 Rated voltage (current), 70°C 1.5h : ON − 0.5h : OFF Test time : 1,000h to 1,048h ± (3.0%+0.1Ω) JIS C 5201-1 4.25.3 155°C Test time : 1,000h to 1,048h ± (1.0%+0.05Ω) JIS C 5201-1 4.29 23±5°C, Immersion cleaning, 5±0.5min. Solvent : 2-propanol Endurance at 70°C Endurance Resistance to solvent ± (1.0%+0.05Ω) Without mechanical damage such as breaks. Static electric characteristics www.rohm.com c 2010 ROHM Co., Ltd. All rights reserved. ○ JIS C 5201-1 4.18 Soldering condition : 260±5°C Duration of immersion : 10±1s. ± (1.0%+0.05Ω) Damp heat, steady state Bend strength of the end face plating JIS C 5201-1 4.17 Rosin·Ethanol (25%WT) Soldering condition : 235±5°C Duration of immersion : 2.0±0.5s. JIS C 5201-1 4.33 EIAJ ED-4701/300 Test method 304 Voltage : 3kv C : 100pF R : 1.5kΩ Apply cycle : 1 time ± (5.0%+0.05Ω) 2/3 2010.09 - Rev.F LTR50 Data Sheet Dimensions (Unit : mm) 0.55±0.1 5.0±0.15 2.5±0.15 0.9±0.2 0.38±0.2 2.5±0.15 No. Material 1 Resistive element (Oxide metal thick film) 2 Silver thick film electrode 3 Nickel electrode 4 Sn electrode 5 Alumina substrate 6 Overcoating (Resin) Packaging Reel Taping P0 P2 B0 02 04 06 08 06 D 04 B 02 A 08 W F E 0 φD A0 K P1 (Unit : mm) C Label W F E A0 B0 12.0±0.3 5.5±0.05 1.75±0.1 3.4±0.2 5.6±0.2 EIAJ ET-7200B compliant (Unit : mm) A B C D D0 P0 P1 P2 K 0 φ180 −1.5 +1 φ60 0 +1.0 13 0 φ13±0.2 φ1.5 +0.1 0 4.0±0.1 4.0±0.1 2.0±0.05 Max. 1.1 Part designation L T R 5 0 U Z P J Resistance tolerance Part No. D F J ±0.5% ±1% ±5% Nominal resistance Resistance code, 3 or 4 digits. Resistance tolerance F,D J Resistance code : : 4 digits 3 digits Packaging Specifications Code Part No. Code LTR50 UZP Resistance tolerance D(±0.5%) F(±1%) J(±5%) Packaging specifications Embossed tape (4mm Pitch) Reel φ180mm (7inch) Basic ordering unit (pcs) 5,000 Reel (φ180mm) : Compatible with JEITA standard "EIAJ ET-7200B" : Standard product www.rohm.com c 2010 ROHM Co., Ltd. All rights reserved. ○ 3/3 2010.09 - Rev.F 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. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. R1010A