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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.
0.125W (1 / 8W)
−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 (Ω)
E= P×R
Power must be derated according to the power derating curve in
Figure 1 when ambient temperature exceeds 70°C.
Table 1
Resistance tolerance Special specification
Resistance range
(Ω)Resistance temperature
coefficient (ppm/°C)
0 to 300
0 to 250
0 to 200
0.068 to 0.091 (E24)
0.1 to 0.2 (E24)
0.22 to 0.91 (E24)
S
L
F (±1%)
J (±5%)
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.
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Data Sheet UCR01
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%+0.005Ω)
± (1.0%+0.005Ω)
± (1.0%+0.005Ω)
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 : +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
60
°C, 95%RH
Test time : 1,000h to 1,048h
± (5.0%+0.005Ω)
± (2.0%+0.005Ω)
± (1.0%+0.005Ω)
± (1.0%+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
JIS C 5201-1 4.25.3
125
°C
Test time : 1,000h to 1,048h
JIS C 5201-1 4.29
25
°C, 60
s.
Solvent : 2-propanol
JIS C 5201-1 4.19
Test temp. : −55
°C
to +125
°C
100cyc 0.5h
JIS C 5201-1 4.33
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 4.13
Rated voltage (current) × 2.5, 5s. 25
°C
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.
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Data Sheet UCR01
Dimensions&Construction
(Surface)
(Cross section)
(Back side)
No. Material
1
2
3
4
5
7
6
Alumina substrate
Nickel electrode
Nickel-chrome electrode
Over ciating
Resistive element
Silver thick film electrode
Copper electrode
8Sn electrode
0.28±0.10
0.37±0.05
4
7
6
5
8
2
2
1
3
0.55±0.1
1.00±0.10
0.34±0.10
Part No. Explanation
UC 0R 1 M V P J S
Part No. Nominal resistance
MVP 10,000
Paper tape (2mm Pitch) φ180mm (7in.)
Resistance tolerance
Special part number
±
1%
±
5%
F
J
UCR01
P
ackaging Specifications Code
R
eel (φ180mm) : 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
0.068 to 0.091
Ω
S
L0.1 to 0.91Ω
Packaging
0 2
0 4
0 6
0 8
0 2
0 4
0 6
0 8
C
ABD
ABCD
φ13±0.2
P0
P2P1
E
FW
T2
φD0
A0
B0
Label
Reel Taping
EIAJ ET-7200B compliant
Thick paper
mount
(Underside paper tape)
Chip resistor Square punchout hole
Heat crimp cover tape
φ180 0
−1.5 φ60 +1
09 +1.0
0φ1.5 +0.1
0
(Unit: mm)
(Unit: mm)
WFEA0B0
D0P0P1P2T2
8.0±0.3 3.5±0.05 1.75±0.1
4.0±0.1 2.0±0.05 2.0±0.05 Max. 1.1
0.7±0.1 1.2±0.1
R1010
A
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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.
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Please be sure to implement in your equipment using the Products safety measures to guard
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