UCR03_11 Datasheet, PDF (1/5 Pages) Rohm – Fixed Thick Film Low Ohmic Chip Resistors For Current Detection

Fixed Thick Film Low Ohmic Chip Resistors For Current Detection
UCR03 (1608 size : 1 / 4W•1 / 5W)
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 20m 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.
Item
Conditions
Specifications
Rated power
Power must be derated according to the power derating curve in ^{0.25W (1 / 4W)}
Figure 1 when ambient temperature exceeds 70°C.
(0.02Ω < R <0.2Ω)
100
0.2W (1 / 5W)
80
(0.22Ω < R <0.91Ω)
at 70°C
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= P×R
I= P R
E: Rated voltage (V)
I : Rated current (A)
P: Rated power (W)
R: Nominal resistance (Ω)
Nominal resistance See Table 1.
Operating temperature
−55°C to + 155°C
Table 1
Resistance range
(Ω)
0.020 to 0.047 (E24)
0.051 to 0.091 (E24)
0.1 to 0.91(E24)
Resistance tolerance
J (±5%)
F (±1%)
Special specification
S
L
Resistance temperature
coefficient (ppm/°C)
0 to 250
0 to 200
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.
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2011.10 - Rev.B