Server (Use case of SP-CAP, POSCAP, OS-CON)

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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

os-con image

12V system

os-con image

poscap image

5V and lower

poscap image

sp-cap image

use-case-pressing image By pressing the button for each circuit block, specific case is shown for reference.

AC/DC
(100 to 250V)

48V (-48V)

DC/DC

CPU

12V

-2.0V

DC/DC

PCH

1.05V

0.9V

DC/DC

Memory

12V/2.5V

3.3V/1.2V

DC/DC

I/O
Storage

3.3V

Space saving

Quantity reduction

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.

Offered values

Achieving quantity reduction with equivalent static capacitance, along with compact size and space saving

	Before	After
Capacitor type Mounted circuit area imag	Ceramic capacitor (MLCC)	area -60%
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
Data sheet Specification/PN search	-	OS-CON SXV Series	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 ℃

Space saving

Quantity reduction

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.

Offered values

Offered values: Reduction of quantity and approx. 1/2 the circuit area for handling equivalent ripple current

	Before	After
Capacitor type Mounted circuit area image	Previous product OS-CON Radial lead type	Surface-mounting type Area -42%
Series, part number	-	SVPG series (SMD) 16SVPG330M
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
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
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

Space saving

Quantity reduction

Case 3 - Replacement from MLCC to POSCAP

Introduction of a replacement case by using compact and large capacitance low ESR capacitors, POSCAP TQC series

Offered values

Achieving quantity reduction with equivalent static capacitance, along with compact size and space saving

	Before	After
Capacitor type Mounted circuit area image	Ceramic capacitor (MLCC)	Area -60%
Series, part number	-	TQC series (SMD) 16TQC47MYFB
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)
Mounted circuit area	42.9 mm²	16.5 mm²
Data sheet Specification/PN search	-	POSCAP TQC Series	Data sheet
Data sheet Specification/PN search	-	POSCAP TQC Series	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)

Quantity reduction

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.

Offered values

Reduction of quantity with equivalent static capacitance, along with noise elimination with an ultra ESR.

	Before		After
Capacitor type Mounted circuit area image	Ceramic capacitor (MLCC)		Same surface area
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)
Mounted circuit area	133.0 mm²		132.5 mm²
Design support tool	-		Simulation data

Features of SP-Cap GX series, LX series, SX series