Fixed Thick Film Low Ohmic Chip Resistors For Current Detection UCR01 (1005 size : 1 / 8W) Features 1) Superior rated power. 2) Stable, low resistance guaranteed regardless of the surrounding environment. 3) Thick film resistive elements were used to create this lineup of ultra-low resistance products ranging from 68m to 910m. 4) Chip resistors ideal for current detection. 5) ROHM resistors have approved ISO9001- / ISO/TS 16949- 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. 0.125W (1 / 8W) 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. E: Rated voltage (V) E= P×R P: Rated power (W) R: Nominal resistance (Ω) Nominal resistance See Table 1. −55°C to + 155°C Operating temperature Table 1 Resistance range (Ω) 0.068 to 0.091 (E24) 0.1 to 0.2 (E24) 0.22 to 0.91 (E24) Resistance tolerance F (±1%) J (±5%) Special specification Resistance temperature coefficient (ppm/°C) S 0 to 300 0 to 250 L 0 to 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. www.rohm.com c 2010 ROHM Co., Ltd. All rights reserved. ○ 1/3 2010.10 - Rev.B UCR01 Data Sheet Characteristics Guaranteed value Item Test conditions (JIS C 5201-1) Resistor type JIS C 5201-1 4.5 Measuring method : Measure under termination Variation of resistance with temperature Resistance to soldering heat Terminal JIS C 5201-1 4.8 Measurement : +25 / +125°C See Table.1 JIS C 5201-1 4.13 Rated voltage (current) × 2.5, 5s. 25°C ± (2.0%+0.005Ω) Overload Solderability Under termination F : ±1% J : ±5% Resistance A new uniform coating of minimum of 95% of the surface being immersed and no soldering damage. ± (1.0%+0.005Ω) No remarkable abnormality on the appearance. 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 4.18 Soldering condition : 260±5°C Duration of immersion : 10±1s. Rapid change of temperature ± (1.0%+0.005Ω) JIS C 5201-1 4.19 Test temp. : −55°C to +125°C 100cyc 0.5h Damp heat, steady state ± (1.0%+0.005Ω) JIS C 5201-1 4.24 60°C, 95%RH Test time : 1,000h to 1,048h Endurance at 70°C ± (5.0%+0.005Ω) 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 Endurance ± (2.0%+0.005Ω) JIS C 5201-1 4.25.3 125°C Test time : 1,000h to 1,048h Resistance to solvent ± (1.0%+0.005Ω) JIS C 5201-1 4.29 25°C, 60s. Solvent : 2-propanol Bend strength of the end face plating www.rohm.com c 2010 ROHM Co., Ltd. All rights reserved. ○ Without open. JIS C 5201-1 4.33 2/3 2010.10 - Rev.B UCR01 Data Sheet Dimensions&Construction 0.28±0.10 0.55±0.1 (Surface) No. Material 1 Alumina substrate 2 Silver thick film electrode 3 Resistive element 4 Over ciating 5 Nickel-chrome electrode 6 Nickel electrode 7 Copper electrode 8 Sn electrode 1.00±0.10 1 2 0.37±0.05 5 (Cross section) 6 7 8 4 3 2 0.34±0.10 (Back side) Part No. Explanation U C R 0 1 M V P J Resistance tolerance Part No. F J S Nominal resistance Special part number ±1% ±5% S 0.068 to 0.091Ω L 0.1 to 0.91Ω Resistance code, 3 or 4 digits. 000 denotes jumper type. Resistance Resistance tolerance code FL, FS, JS : 4 digits JL : 3 digits Packaging Specifications Code Part No. Code UCR01 MVP Resistance tolerance J(±5%) F(±1%) Packaging specifications Paper tape (2mm Pitch) Reel Basic ordering unit(pcs) φ180mm (7in.) 10,000 Reel (φ180mm) : Compatible with JEITA standard "EIAJ ET-7200B" : Standard product Packaging Reel Taping P0 P2 P1 φD0 E F W 02 04 06 08 06 D 04 B 02 A 08 B0 A0 Heat crimp cover tape Thick paper mount (Underside paper tape) Chip resistor Square punchout hole T2 C Label EIAJ ET-7200B compliant (Unit: mm) (Unit: mm) A B C D 0 φ180 −1.5 +1 φ60 0 +1.0 9 0 φ13±0.2 W F E A0 B0 8.0±0.3 3.5±0.05 1.75±0.1 0.7±0.1 1.2±0.1 D0 www.rohm.com c 2010 ROHM Co., Ltd. All rights reserved. ○ φ1.5 3/3 +0.1 0 P0 P1 P2 T2 4.0±0.1 2.0±0.05 2.0±0.05 Max. 1.1 2010.10 - 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. 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