UCR10 resistors rev.a 1/4 low ohmic compact thick film chip resistors UCR10 (2012 size : 1 / 3w ) z 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 11m ? to 100 ? m. 4) chip resistors ideal for current detection. 5) rohm resistors have approved iso9001- / iso/ts 16949- certification. z ratings design and specifications are subject to change without notice. carefully check the specification sheet before using or ordering it. 0.33w (1 / 3w) ? 55 c to + 155 c at 70 c item conditions specifications rated power rated voltage operating temperature nominal resistance see table 1. 0 20 40 60 80 100 ? 55 0 70 100 155 ambient temperature ( c) power load (%) fig.1 the voltage rating is calculated by the following equation. e: rated voltage (v) p: rated power (w) r: nominal resistance ( ? ) e= p r power must be derated according to the power derating curve in figure 1 when ambient temperature exceeds 70 c .
UCR10 resistors rev.a 2/4 table 1 resistance tolerance special specification resistance range ( ? ) resistance temperature coefficient (ppm/ c) 250100 0 to 250 0 to 150 0 to 150 0.011 to 0.018 (e24) 0.020 to 0.047 (e24) 0.051 to 0.091 (e24) 0.1 j (5%) s l f (1%) j (5%) z before using components in circuits where they will be exposed to transients such as pulse loads (short?duration, high? level l oads), 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. z characteristics item test conditions (jis c 5201-1) resistor type guaranteed value resistance variation of resistance with temperature solderability damp heat, steady state endurance at 70 c endurance rapid change of temperature bend strength of the end face plating resistance to solvent resistance to soldering heat overload (2.0% + 0.005 ? ) (1.0% + 0.005 ? ) (3.0% + 0.005 ? ) f : 1% j : 5% without open. jis c 5201-1 4.5 measuring method : measure under termination terminal under termination jis c 5201-1 4.8 measurement : ? 55 / + 25 / + 125 c jis c 5201-1 4.18 soldering condition : 260 5 c duration of immersion : 10 1s. jis c 5201-1 4.24 40 c, 93%rh test time : 56 days (3.0% + 0.005 ? ) (3.0% + 0.005 ? ) (0.5% + 0.005 ? ) (1.0% + 0.005 ? ) jis c 5201-1 4.25.1 rated voltage (current), 70 c 1.5h : on ? 0.5h : off test time : 1,000h jis c 5201-1 4.25.3 155 c test time : 1,000h to 1,048h jis c 5201-1 4.29 23 5 c solvent : 2-propanol jis c 5201-1 4.19 test temp. : ? 55 c to + 125 c 5cyc jis c 5201-1 4.33 jis c 5201-1 4.17 rosinethanol (25%wt) soldering condition : 235 5 c duration of immersion : 2.0 0.5s. jis c 5201-1 4.13 rated voltage (current) 2.5, 2s. see table.1 no remarkable abnormality on the appearance. a new uniform coating of minimum of 95% of the surface being immersed and no soldering damage.
UCR10 resistors rev.a 3/4 z dimensions (unit : mm) no. material resistive element (oxide metal thick film) silver thick film electrode nickel electrode sn electrode alumina substrate overcoating (resin) mark side 1 2 3 4 5 7 6 1.25 0.10 0.55 0.10 0.24 0.20 (the surface) 7 4 3 2 1 6 5 0.50 0.20 (the back) (the cross section) 2.00 0.10 r033 z packaging 0 2 0 4 0 6 0 8 0 2 0 4 0 6 0 8 c abd abcd 13 0.2 p 0 p 2 p 1 e f w t 2 d 0 a 0 b 0 label reel taping eiaj et-7200b compliant thick paper mount (underside paper tape) chip resistor square punchout hole heat crimp cover tape 180 0 ? 1.5 60 +1 0 9 +1.0 0 1.5 +0.1 0 1.65 + 0.2 ? 0.1 2.4 + 0.2 ? 0.1 (unit: mm) (unit: mm) wf ea 0 b 0 d 0 p 0 p 1 p 2 t 2 8.0 0.3 3.5 0.05 1.75 0.1 4.0 0.1 4.0 0.1 2.0 0.05 max. 1.1
UCR10 resistors rev.a 4/4 z part no. explanation uc 1 r 0 e v h j s 0.011 to 0.091 ? 0.1 ? to s l part no. nominal resistance evh 5 , 000 paper tape (4mm pitch) 180mm (7in.) resistance tolerance special part number 1% 5% f j UCR10 packaging specifications code reel ( 180mm) : compatible with jeita standard "eiaj et-7200b" : standard product part no. resistance tolerance code packaging specifications reel basic ordering unit(pcs) j( 5%) f( 1%) fl, fs, js jl : : 4 digits 3 digits resistance code, 3 or 4 digits. 000 denotes jumper type. resistance tolerance resistance code
notes no technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of rohm co.,ltd. the contents described herein are subject to change without notice. the specifications for the product described in this document are for reference only. upon actual use, therefore, please request that specifications to be separately delivered. application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. rohm co.,ltd. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by rohm co., ltd. is granted to any such buyer. products listed in this document are no antiradiation design. appendix1-rev2.0 thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact your nearest sales office. rohm customer support system the americas / europe / asia / japan contact us : webmaster@ rohm.co. jp www.rohm.com copyright ? 2008 rohm co.,ltd. the products listed in this document are designed to be used with ordinary electronic equipment or de vices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of which would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. it is our top priority to supply products with the utmost quality and reliability. however, there is always a chance of failure due to unexpected factors. therefore, please take into account the derating characteristics and allow for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in order to prevent possible accidents that may result in bodily harm or fire caused by component failure. rohm cannot be held responsible for any damages arising from the use of the products under conditions out of the range of the specifications or due to non-compliance with the notes specified in this catalog. 21 saiin mizosaki- cho, ukyo-ku, kyoto 615-8585, japan tel : +81-75-311-2121 fax : +81-75-315-0172 appendix
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