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UCR10
Resistors
Low Ohmic Compact Thick Film Chip Resistors
UCR10 (2012 size : 1 / 3W)
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 100m. 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 Power must be derated according to the power derating curve in Figure 1 when ambient temperature exceeds 70C.
100 80
POWER LOAD (%)
Specifications 0.33W (1 / 3W) at 70C
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= PxR P: Rated power (W) R: Nominal resistance ()
Nominal resistance Operating temperature
See Table 1. -55C to + 155C
Rev.A
1/4
UCR10
Resistors
Table 1 Resistance range () Resistance tolerance Special specification Resistance temperature coefficient (ppm/C)
0.011 to 0.018 (E24) 0.020 to 0.047 (E24) 0.051 to 0.091 (E24) 0.1
J (5%) S F (1%) J (5%) L
250100 0 to 250 0 to 150 0 to 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.
Characteristics
Item Guaranteed value Resistor type Test conditions (JIS C 5201-1) JIS C 5201-1 4.5 Measuring method : Measure under termination Resistance F : 1% J : 5% Under termination Terminal
Variation of resistance with temperature Overload
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 : 56 days JIS C 5201-1 4.25.1 Rated voltage (current), 70C 1.5h : ON - 0.5h : OFF Test time : 1,000h JIS C 5201-1 4.25.3 155C Test time : 1,000h to 1,048h JIS C 5201-1 4.29 235C Solvent : 2-propanol JIS C 5201-1 4.33
(2.0%+0.005)
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.
Rev.A
2/4
UCR10
Resistors
Dimensions (Unit : mm)
(The surface)
R033
0.240.20
1.250.10
No.
1 2 3 4
Material Resistive element (Oxide metal thick film) Silver thick film electrode Nickel electrode Sn electrode Alumina substrate Overcoating (Resin) Mark side
(The back)
0.500.20
5
5
(The cross section)
4 3 2
7
6
0.550.10
7
2.000.10
1 6
Packaging
Reel Taping
P0 P2 P1 D0 E F B0
08 06 04 02 02 04 06 08
W
A
B
D
A0
Heat crimp cover tape Thick paper mount
C
(Underside paper tape) Chip resistor Square punchout hole
T2
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 +0.2 1.65 -0.1 P2 2.00.05
B0 2.4 +0.2 -0.1
T2 Max. 1.1
Rev.A
3/4
UCR10
Resistors
Part No. Explanation
UCR10
Part No.
EVH
Resistance tolerance
F J
J
S
Special part number
S 0.011 to 0.091 L
Nominal resistance
Resistance code, 3 or 4 digits. 000 denotes jumper type. Resistance Resistance tolerance code FL, FS, JS : 4 digits JL : 3 digits
1% 5%
0.1 to
Packaging Specifications Code
Part No. UCR10 Code EVH Resistance tolerance J(5%) F(1%) Packaging specifications Paper tape (4mm Pitch) Reel 180mm (7in.) Basic ordering unit(pcs) 5,000
Reel (180mm) : Compatible with JEITA standard "EIAJ ET-7200B" : Standard product
Rev.A
4/4
Appendix
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.
The products listed in this document are designed to be used with ordinary electronic equipment or devices (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.
Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact your nearest sales office.
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www.rohm.com
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Appendix1-Rev2.0

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