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

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Requirements for capacitor performance used in Ethernet Switch

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Trend of Ethernet Switch

Compact size

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Requirement for capacitor performance

Compact size

Large capacity

Providing the optimized solution with a high to low voltage power source

Example)

48V system

os-con image

12V system

os-con image

5 and lower

poscap image

poscap image

sp-cap image

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

Space saving
Quantity reduction

Case 1 - Replacement from MLCC to OS-CON

Introduction of a replacement by using a low ESR capacitor OS-CON SXV series capable of handling high ripple current.

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
Ceramic capacitor (MLCC) Ceramic capacitorMounted circuit area image

Surface-mounting type
OSCONMounted circuit area image Area -61%
Series, part number - SXV series(SMD)
80SXV56M
Specifications 100 V, 15 µF, 5.7 x 5.0 mm 80 V, 56 µF, ø10 x 12.6 mm
Quantity 9 pcs 1 pcs
Effective electrostatic capacitance 54 μF
15 μF x 9 pcs x 40 %=54 μF
(Capacitance reduced by 48 VDC)
56 μF
(No Capacitance reduced by 48VDC)
Mounted circuit area 286.2 mm2 112.4 mm2
Datasheet
Specification, part number search
- Datasheet Specification, part number search

Features of OS-CON SXV series

  1. High voltage resistance: 100V max.
  2. High ripple current: 3.28A rms max. (105 ℃/100 kHz)
  3. Low current leakage: 0.05 CV
  4. 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:
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 Previous product OS-CON Radial lead type Mounted circuit area image

Surface-mounting type
OS-CON Surface-Mounted circuit area image Area -42%
Series, part number - SVPG series
16SVPG330M
Specifications 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 Φ5 x 4.5 mm Φ5 x 5.9 mm
Low ESR 6.5 mΩ ~ 12 mΩ ~
High voltage resistance 25 V max. 50 V max.
Datasheet
Specification, part number search
Datasheet
Specification, part number search
Datasheet
Specification, part number search
Space saving
Quantity reduction

Case 3 - 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 SX series in the low voltage side

Offered values:
Reduction of quantity with equivalent static effective capacitance, along with noise elimination with an low ESR.
  Before After
 
Capacitor type



Mounted circuit area image
Ceramic capacitor (MLCC) Ceramic capacitorMounted circuit area image

SPCAPMounted circuit area image Same surface area
Series, part number - - SX series
EEFSX0D561E4
Specifications 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
Effective electrostatic capacitance 1,603 µF
(Capacitance reduced by 1.8 VDC)
1,680 µF
(No Capacitance reduced by 1.8 VDC)
Transient response simulation 266 mV [P-P] 266 mV [P-P]
Mounted circuit area 133.0 mm2 132.5 mm2
Design support tool - Simulation data

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

In the case of replacement from the MLCC shown above, the SX series is used, but in the Embedded board,
you can also use the same low ESR products, GX series , LX series .

GX series LX series SX series
Rated voltage 2 V to 2.5 V 2 V to 6.3 V
Static capacitance 330 μF to 560 μF 82 μF to 560 μF
Number of terminals 2 terminals / 3 terminals 3 terminals 2 terminals
Features High capacitance ~ 560 μF (2V)
Low ESR 3 mΩ 4.5 mΩ ~
Datasheet
Specification,
part number search
Datasheet
Specification,
part number search
Datasheet
Specification,
part number search
Space saving
Quantity reduction

Case 4 - Replacement from MLCC to POSCAP

In the low voltage side, we recommend the compact and large capacity POSCAP TPE series .

Offered values:
Achieving quantity reduction with equivalent capacitance along with compact size and space saving.
  Before After
 
Capacitor type



Mounted circuit area image
Ceramic capacitor (MLCC) Ceramic capacitorMounted circuit area image

POSCAPMounted circuit area image Area -66%
Series, part number - - TPE series
2R5TPE1500MC
Specifications 4 V, 100 μF,
2.0 x 1.2 mm
4 V, 47 μF,
2.0 x 1.2 mm
2.5 V, 1500 µF, 7.3 x 4.3 mm
Quantity 31 pcs (24 + 7) 1 pc
Effective electrostatic capacitance 1,603 µF
(Capacitance reduced by 1.8 VDC)
1,500 µF
(No Capacitance reduced by 1.8 VDC)
Mounted circuit area 133.0 mm2 44.2 mm2

Features of POSCAP TPE series

In the replacement case shown above, TPE series D size product is used, but compact and large capacity
TPE series B size product can also be used.

TPE series
Product dimensions B size
L3.5×W2.8
D size
L7.3×W4.3
Rated voltage 2.0 V to 10 V 2.5 V to 10 V
Static capacitance 47 µF to 470 µF 68 µF to 1,500 μF
Features Low profile 1.9 mm 1.4 mm
Large capacitance ∼470 µF ∼1,500 µF
Low ESR 9 mΩ ~ / 300 kHz(2.5V) 7 mΩ ~ (2.5V)
Datasheet Specification, part number search
Space saving
Quantity reduction

Case 5 - Replacement from MLCC to POSCAP

We recommend the compact and large capacity POSCAP TPE series .

Offered values:
Achieving quantity reduction with equivalent capacitance along with compact size and space saving.
  Before After
 
Capacitor type



Mounted circuit area image
Ceramic capacitor (MLCC) Ceramic capacitorMounted circuit area image

POSCAPMounted circuit area image Area -60%
Series, part number - TPE series
6TPE220MAPB
Specifications 6.3 V, 100 µF, 2.0 x 1.2 mm 6.3 V, 220 µF, 3.5 x 2.8 mm
Quantity 10 pcs 1 pc
Effective electrostatic capacitance 200 µF
100 μF x 10 pcs x 20% = 200 μF
(Capacitance reduced by 5.0 VDC)
220 μF
(No Capacitance reduced by 5.0 VDC)
Mounted circuit area 42.9 mm2 16.5 mm2

Features of POSCAP TPE series

In the replacement case shown above, TPE series B size product is used, but low profile large capacity
TPE series D size product can also be used.

TPE series
Product dimensions B size
L3.5×W2.8
D size
L7.3×W4.3
Rated voltage 2.0 V to 10 V 2.5 V to 10 V
Static capacitance 47 µF to 470 µF 68 µF to 1,500 μF
Features Low profile 1.9 mm 1.4 mm
Large capacitance ∼470 µF ∼1,500 µF
Low ESR 9 mΩ ~ / 300 kHz(2.5V) 7 mΩ ~ (2.5V)
Datasheet Specification, part number search

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