To the top page of use case (SP-Cap, POSCAP, OS-CON)
Requirements for capacitor performance used in servers
Trend of servers
Higher operating speed
Increasing power consumption
AI-based operation
Larger operating current
Lower operating voltages
Lower line impedance
Requirement for capacitor performance
Low impedance / Low ESR
Higher reliability (Longer operating life at higher temperature)
Providing the optimized solution with a high to low voltage power source
Example)
48V/24Vsystem
12V system
5V and lower
By pressing the button for each circuit block, specific case is shown for reference.
AC/DC (100 to 250V) |
48V (-48V) | DC/DC | DC/DC | CPU | |||||||||||
12V | -2.0V | ||||||||||||||
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DC/DC | PCH | ||||||||||||||
1.05V | |||||||||||||||
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0.9V | |||||||||||||
DC/DC | Memory | ||||||||||||||
12V/2.5V | |||||||||||||||
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3.3V/1.2V | |||||||||||||
DC/DC | I/O Storage |
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3.3V | |||||||||||||||
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5V | |||||||||||||
Case 1 - Replacement from MLCC to OS-CON
On the high voltage side of the server, an OS-CON SXV series replacement will be introduced to take advantage of the resistance to ultra-high voltage and high ripple current.
Before | After | ||
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Capacitor type Mounted circuit area imag |
Ceramic capacitor (MLCC) |
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Series, part number | - | SXV series 80SXV56M | |
Specification | 100 V, 15 µF, 5.7 x 5.0 mm | 80 V, 56 µF, ø10 x 12.6 mm | |
Quantity | 9 pcs | 1 pc | |
Total electrostatic capacitance | 54 μF 15 μF x 9 pcs x 40 %=54 μF (Capacitance reduced by 48 VDC) |
56 µF | |
Mounted circuit area | 286.2 mm2 | 112.4 mm2 | |
Data sheet Specification/PN search |
- | OS-CON SXV Series |
Datasheet |
Specification /PN search |
Features of OS-CON SXV series
- Ultra-high voltage resistance : 100V max.
- High ripple current : 3.28A rms max. (105 ℃/100 kHz)
- Low current leakage : 0.05 CV
- High heat resistance : 125 ℃
Case 2 - Replacement from polymer capacitor to OS-CON
Introduction of a replacement by using a low ESR capacitor OS-CON SVPG series capable of handling high ripple current.
Before | After | ||
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Capacitor type Mounted circuit area image |
Previous product OS-CON Radial lead type |
Surface-mounting type |
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Series, part number | - | SVPG series (SMD) 16SVPG330M |
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Specification | 16 V, 270 µF, ø8 x 9 mm | 16 V, 330 µF, ø6.3 x 10.4 mm | |
Quantity | 3 pcs | 2 pcs | |
Ripple current | 15 A 5.0 A x 3 pcs |
15 A 7.5 A x 2 pcs |
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Mounted circuit area | 150.7 mm2 | 87.1 mm2 |
Features of OS-CON SVPG series SVPK series
The replacement case shown above uses SVPG series , but high voltage resistance SVPK series can also be used.
SVPG series | SVPK series | ||
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Rated voltage | 16 V to 25 V | 16 V to 50 V | |
Static capacitance | 15 µF to 1,200 μF | 10 µF to 1,200 μF | |
Features | High ripple current | 7.5A rms max. (105 ℃/100 kHz) (16V) |
1.7A rms max. (105 ℃/100 kHz) (16V, 20V) |
High capacitance | 1,200 μF | ||
Compact size | ø5 x 4.5 mm | ø5 x 5.9 mm | |
Low ESR | 6.5 mΩ ~ | 12 mΩ ~ | |
High voltage resistance | 25 V max. | 50 V max. | |
Datasheet Specification /PN search |
Datasheet Specification /PN search |
Case 3 - Replacement from MLCC to POSCAP
Introduction of a replacement case by using compact and large capacitance low ESR capacitors, POSCAP TQC series
Before | After | ||
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Capacitor type Mounted circuit area image |
Ceramic capacitor (MLCC) |
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Series, part number | - | TQC series (SMD) 16TQC47MYFB |
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Specification | 25 V, 22 µF, 2.0 x 1.2 mm | 16 V, 47 µF, 3.5 x 2.8 mm | |
Quantity | 10 pcs | 1 pc | |
Total electrostatic capacitance | 44 µF 22 μF x 10 pcs x 20% = 54 μF (Capacitance reduced by 12 VDC) |
47 μF (No Capacitance reduced by 12VDC) |
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Mounted circuit area | 42.9 mm2 | 16.5 mm2 | |
Data sheet Specification/PN search |
- | POSCAP TQC Series |
Data sheet |
Specification /PN search |
Features of POSCAP TQC series
- Ultra-high voltage resistance : 35V max.
- High ripple current : 1.8A rms max. (105 ℃/100 kHz)
- Compact size : 3.5 x 2.8 mm
- Low profile : 1.15 mm (7.3 mm x 4.3 mm 16V)
Case 4 - Replacement from MLCC to SP-Cap (by simulation)
Introduction of a replacement case by using the industry's top-class ultra-low ESR capacitor SP-Cap GX series series in the low voltage side of a server.
Before | After | ||
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Capacitor type Mounted circuit area image |
Ceramic capacitor (MLCC) |
Same surface area |
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Series, part number | - | - | GX series EEFGX0D561R |
Specification | 4 V, 100 μF, 2.0 x 1.2 mm |
4 V, 47 μF, 2.0 x 1.2 mm |
2 V, 560 µF, 7.3 x 4.3 x 1.9 mm |
Quantity | 31 pcs (24 + 7) | 3 pcs | |
Total electrostatic capacitance | 1,651 µF 100 μF x 24 pcs x 60% + 47 μF x 7 pcs x 64% (Capacitance reduced by 1.8 VDC) |
1,680 μF (No Capacitance reduced by 1.8 VDC) |
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Mounted circuit area | 133.0 mm2 | 132.5 mm2 | |
Design support tool | - | Simulation data |
Features of SP-Cap GX series, LX series, SX series