ROHM UCR18EVHJL Technical data

Table 1

Fixed Thick Film Low Ohmic Chip Resistors For Current Detection

UCR18 (3216(1206) size : 1 / 2W)

zFeatures

1) Chip resistors ideal for current detection. (11mΩ to 100mΩ)

2) Unique chip and terminal configuration reduces resistance shifting during the mounting process.

3) Superior rated power.

4) ROHM resistors have approved ISO9001- / ISO/TS 16949- certification

zRatings

Design and specifications are subject to change without notice. Carefully check the specification sheet before using or ordering it.

Item Conditions Specifications

Rated power

Power must be derated according to the power derating curve in
Figure 1 when ambient temperature exceeds 70°

100

80

60

40

POWER LOAD (%)

20

0

−55 0 70 100 155
AMBIENT TEMPERATURE (°C)

Fig.1

C

.

0.5W (1 / 2W)
at 70°C

Rated voltage

Nominal resistance
Operating temperature

The voltage rating is calculated by the following equation.

E= P×R

See Table 1.

E: Rated voltage (V)
P: Rated power (W)
R: Nominal resistance (Ω)

C to + 155°C

−55°

Resistance range

(Ω)

0.011 to 0.018 (E24)

0.020 to 0.039 (E24)

0.043 to 0.091 (E24)

0.1

zBefore 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.

Resistance tolerance Special specification

F (±1%)
J (±5%)

S

L

Resistance temperature

coefficient (ppm/°C)

0 to 350
0 to 200
0 to 150
0 to 150

www.rohm.com

c

○

2010 ROHM Co., Ltd. All rights reserved.

1/3

2010.04 - Rev.D

al

UCR18 Data Sheet

z

Characteristics

Resistance

Item Test conditions (JIS C 5201-1)

Guaranteed value

Resistor type

F : ±1%
J : ±5%

JIS C 5201-1 4.5
Measuring method : Measure under termination

Under termination

Termin

Variation of resistance
with temperature

Overload

Solderability

Resistance to
soldering heat

Rapid change of
temperature

Damp heat, steady state

Endurance at 70°C

Endurance

Resistance to solvent

Bend strength of
the end face plating

See Table.1

± (2.0%+0.005Ω)

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.

± (1.0%+0.005Ω)

± (3.0%+0.005Ω)

± (3.0%+0.005Ω)

± (3.0%+0.005Ω)

± (0.5%+0.005Ω)

Without open.

JIS C 5201-1 4.8
Measurement : −55 / +25 / +125°C

JIS C 5201-1 4.13
Rated voltage (current) × 2.5, 2s.

JIS C 5201-1 4.17
Rosin·Ethanol (25%WT)
Soldering condition : 235±5
Duration of immersion : 2.0±0.5s.

JIS C 5201-1 4.18
Soldering condition : 260±5
Duration of immersion : 10±1s.

JIS C 5201-1 4.19
Test temp. : −55

JIS C 5201-1 4.24

°C, 93%RH

40
Test time : 56 days

JIS C 5201-1 4.25.1
Rated voltage (current), 70

1.5h : ON − 0.5h : OFF
Test time : 1,000h

JIS C 5201-1 4.25.3

°C

155
Test time : 1,000h to 1,048h

JIS C 5201-1 4.29

°C

23±5
Solvent : 2-propanol

JIS C 5201-1 4.33

°C

to +125°C 5cyc

°C

°C

°C

www.rohm.com

c

○

2010 ROHM Co., Ltd. All rights reserved.

2/3

2010.04 - Rev.D

P

R

)

UCR18 Data Sheet

zDimensions (Unit : mm)

(The surface)

(The back)

(The cross section)

4

3

2

R033

0.3±0.2

0.9±0.25

7

5

3.2±0.15

1 6

0.55±0.1

1.6±0.15

No.

Resistive element

1

(Oxide metal thick film)

2

Silver thick film electrode

3

Nickel electrode

4

Sn electrode

5

Alumina substrate

6

Overcoating (Resin)

7

Mark side

z

Packaging

Reel Taping

ABD

0 2

0 4

0 6

0 8

C

ABCD

φ180

0

−1.5

φ60

+1

0

+1.0

9

0

Label

EIAJ ET-7200B compliant

(Unit: mm)

φ13±0.2

0 2

0 4

0 6

0 8

zPart No. Explanation

Material

P

0

P

2

Heat crimp cover tape

Thick paper

(Underside paper tape)

mount

WFEA0B

8.0±0.3 3.5±0.05 1.75±0.1

D

0

P

0

+0.1

4.0±0.1 4.0±0.1 2.0±0.05 Max. 1.1

φ1.5

0

P

1

φD

0

F

B

0

A

0

Chip resistor Square punchout hole

(Unit: mm)

0

+0.1

−0.05

2

3.5

+0.15

−0.05

T

2

1.95

P

1

P

E

W

T

2

UC 1R 8 E V H J S

Part No.

Resistance tolerance

F

±
±

J

Special part number

0.011 to 0.091

1%
5%

S
L

0.1Ω

ackaging Specifications Code

Part No.

UCR18

eel (φ180mm) : Compatible with JEITA standard "EIAJ ET-7200B"

: Standard product

Resistance tolerance

Code Packaging specifications Reel

J(±5%) F(±1%)

EVH 5,000

Paper tape (4mm Pitch)

φ180mm (7in.)

www.rohm.com

c

○

2010 ROHM Co., Ltd. All rights reserved.

3/3

Nominal resistance

Ω

Resistance code, 3 or 4 digits.
000 denotes jumper type.

Resistance

tolerance

FL, FS, JSJL::4 digits

Resistance

code

3 digits

Basic ordering unit(pcs

2010.04 - Rev.D

Notes

No copying or reproduction of this document, in par t or in whole, is permitted without the
consent of ROHM Co.,Ltd.

The content specied herein is subject to change for improvement without notice.

The content specied 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 specications,
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 specied 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 specied 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.

Notice

The Products specied in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, ofce-automation equipment, commu­nication devices, electronic appliances and amusement devices).

The Products specied 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, re or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, re 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 injur y (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 specied 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

www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.

http://www.rohm.com/contact/

R1010

A