Information

GRM SeriesGJM SeriesGMA SeriesGMD SeriesGQM SeriesGRJ SeriesGR3 SeriesKRM SeriesKR3 SeriesLLA SeriesLLL SeriesLLM SeriesLLR Series
!
Caution/
Notice
125
!
Note
• Please read rating and
!
CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
• This catalog has only typical specifi cations. Therefore, please approve our product specifi cations or transact the approval sheet for product specifi cations before ordering.
Features
High Effective Capacitance & High Allowable Ripple Current
GR3 Series
This is a general purpose high ripple resistance product excellent
in DC bias characteristics.
Size
Rated Voltage DC250V to 630V
Capacitance 0.01μF to 1.0μF
Main Applications
For PFC (Power Factor Correction) Circuits of Power Supplies,
EMI Suppression and Smoothing Circuits
2.0×1.25mm to 5.7×5.0mm
When a DC bias is applied, a capacitance
higher than conventional products
(X7R characteristics) can be acquired.
1
About twice the capacitance can be secured
when DC200V is applied.
50 100 150 200 250
20
-40
-20
0
-60
-80
-100
0
DC Bias (V)
<Comparison between Capacitance - DC Bias Characteristics>
Cap. Change (%)
New Material GR3 (1μF/250V)
Conventional Material GRM (1μF/250V)
Specifications
Since dielectric materials which enable a reduction of noise are used, this product is more effective for reducing
noise compared to the general purpose GRM series.
<Dimensions>
ege
L
W
T
This product has a noise reduction effect.
3
Improved ripple resistance performance
compared to conventional products
(X7R characteristics).
2
In the case of a product with a capacitance of 1μF,
when the exothermic temperature reaches 20°C at
frequency f=300kHz, the amount of resistance of a
product with conventional material is 2.9Ar.m.s.;
however, the new material is 4.7Ar.m.s..
12 43657
100
10
1
0
Current (Ar.m.s.)
Temperature Rise (°C)
<Comparison of Ripple Heat Generation Characteristics>
4.7Ar.m.s.
20°C
2.9Ar.m.s.
30kHz
100kHz
30kHz
300kHz
300kHz
100kHz
New Material GR3
Conventional Material GRM
20
30
40
50
60
70
80
90
Sound Pressure Level (dB)
3216(1206)
630V/0.01μF
3225(1210)
630V/0.047μF
4532(1812)
250V/0.33μF
5750(2220)
250V/0.33μF
in mm(inch)
New Material GR3
Conventional Material GRM
This catalog contains only a portion of the product lineup.
Please refer to the capacitor search tool on the Murata Web site for details.