PMR03 Datasheet, PDF (1/3 Pages) Rohm – Ultra low ohmic resistors for current detection

Resistors
PMR03
Ultra low ohmic resistors for current detection
PMR03
zOutline
PMR03 in the 0603 package (1.6x0.8mm) works at the rated power of 0.25W, which is the first in the industry for its size
using metal-plate as resistive element and is achieved by Rohm’s unique production method.
The suitable application is the battery meter in portable appliances, and also the current control circuit (which is
down-sizing these days) and the over-current protection circuit.
zFeatures
1) Metal-plate, which is an excellent material in view of electrical characteristics, is employed as resistive element by
Rohm’s unique production method.
2) 0.25W is achieved; the industry’s first for 0603 sized metal-plate type.
3) 150ppm/°C of TCR (Temperature Coefficient of Resistance) is realized at ultra-low resistance of 10mΩ
4) Completely Pb free product
zApplications
Note PC, HDD, mobile phone, small battery-unit, charger, DC/DC converter, general power-supply units
zRatings
Item
Rated power
Conditions
Power must be derated according to the power derating curve in
Figure 1 when ambient temperature exceeds 70°C.
100
80
60
40
20
0 _−55
0
70 100 125 155
AMBIENT TEMPERATURE (°C)
Fig.1
Rated voltage
Rated current
Rated voltage and current are determined from the following.
E= P×R
I= P / R
E: Rated voltage (V)
I: Rated current (A)
P: Rated power (W)
R: Resistance (Ω)
Nominal resistance
Tolerance
J
Temperature coefficient +25/−55/+25/+125°C (JIS C 5201-1 4.8)
Operating temperature
Specifications
0.25W (1 / 4W)
at 70°C
10mΩ
±5%
±150ppm/°C
−55°C to +155°C
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