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
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2010.04 - Rev.D
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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
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c
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2010 ROHM Co., Ltd. All rights reserved.
2/3
2010.04 - Rev.D
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