We would like to introduce examples of Panasonic hybrid capacitors adopted by customers.
Component proposal flow
Please give us information on the power circuits and related components you are using.
[Power circuit] input voltage, output voltage, load current, switching frequency, etc.
[Components used] power IC, capacitor, inductor, etc.
Based on design information given by the customer, we choose a capacitor that best fits the customer’s product.
Based on the chosen capacitor and information on power elements used by the customer, we conduct a simulation for a circuit in which the capacitor will operate under using service conditions specified by the user.
After analyzing simulation results, we propose an optimum capacitor.
Choose a capacitor as a solution for a problem the customer needs to clear.
- Case 1: Space saving in the board mounting area by reducing the number of output capacitors
- Case 2: Low-height app design achieved by a reduction in the size and height of output capacitors
- Case 3: Space saving in the board mounting area by a reduction in the size of output capacitors
Case 1: Space saving in the board mounting area by reducing the number of output capacitors
STEP❶ Confirm information on power elements used by the customer.
Input voltage Vin | 24V |
---|---|
Output voltage Vout | 12V |
Load current | 10A |
Switching frequency | 300kHz |
Response to load transient current | |
---|---|
Rising | 1A→10A |
Falling | 10A→1A |
Through rate | 10A/us |

STEP❷ Choosing a capacitor
■Comparative evaluation of voltage changes that occur when the capacitor responds to load transient current
<Evaluation results>
Series | ZC |
---|---|
Rated voltage | 25V |
Capacitance | 330uF |
Size | φ10x10.2 |
Ripple current | 2Arms |
ESR | 20mΩ |
Number of components | 3 |
Space | 360 mm2 |
![]() |
Total capacitance | 1000uF |
---|---|
Size | φ10 or less |
Total ripple current | 6 Arms |
Total ESR | 6.7mΩ |
Number of components | 1 or 2 |
Space | 240 mm2 |
![]() |
Series | ZK | ZKU | ZSU |
---|---|---|---|
Product number | EEHZK1E471P | EEHZK1E561UP | EEHZS1E102UP |
Rated voltage | 25V | 25V | 25V |
Capacitance | 470uF | 560uF | 1000uF |
Size | φ10x10.2mm | φ10x10.2mm | φ10x16.5mm |
Number of capacitors (estimate) | 2 | 2 | 1~2 |
Series | ZC |
---|---|
Rated voltage | 25V |
Capacitance | 330uF |
Size | φ10x10.2 |
Ripple current | 2Arms |
ESR | 20mΩ |
Number of components | 3 |
Space | 360 mm2 |
![]() |
Total capacitance | 1000uF |
---|---|
Size | φ10 or less |
Total ripple current | 6 Arms |
Total ESR | 6.7mΩ |
Number of components | 1 or 2 |
Space | 240 mm2 |
![]() |
Series | ZK | ZKU | ZSU |
---|---|---|---|
Product number | EEHZK1E471P | EEHZK1E561UP | EEHZS1E102UP |
Rated voltage | 25V | 25V | 25V |
Capacitance | 470uF | 560uF | 1000uF |
Size | φ10x10.2mm | φ10x10.2mm | φ10x16.5mm |
Number of capacitors (estimate) | 2 | 2 | 1~2 |
STEP❸ Examining the capacitor
Capacitor Series |
Mounting area Reduction effects |
Rising 1 A → 10 A (spec:△V=600mV) |
Falling 10 A → 1 A (spec:△V=600mV) |
Space saving |
Output voltage Stability |
|||
---|---|---|---|---|---|---|---|---|
![]() |
![]() |
|||||||
ZC
25V 330uF
ø10x10.2mm |
![]() |
224mV | - | 234mV | - | - | - | |
ZK
(EEHZK1E471P)
25V 470uF
ø10x10.2mm |
![]() -33% |
225mV | Equal to the conventional type |
235mV | Equal to the conventional type |
〇 | 〇 | |
ZKU
(EEHZK1E561UP)
25V 560uF
ø10x10.2mm |
![]() -33% |
214mV | Improved | 222mV | Improved | 〇 | ◎ | |
ZSU
(EEHZS1E102UP)
25V 1000uF
ø10x16.5mm |
![]() -66% |
222mV | Equal to the conventional type |
234mV | Equal to the conventional type |
◎ | 〇 | ![]() |
Capacitor Series | Mounting area Reduction effects |
Rising 1 A → 10 A (spec:△V=600mV) |
Falling 10 A → 1 A (spec:△V=600mV) |
||
---|---|---|---|---|---|
![]() |
![]() |
||||
ZC
|
![]() |
224mV | - | 234mV | - |
ZK
(EEHZK1E471P)
|
![]() -33% |
225mV | Equal to the conventional type |
235mV | Equal to the conventional type |
ZKU
(EEHZK1E561UP)
|
![]() -33% |
214mV | Improved | 222mV | Improved |
ZSU
(EEHZS1E102UP)
|
![]() -66% |
222mV | Equal to the conventional type |
234mV | Equal to the conventional type |

Capacitor Series | Space saving |
Output voltage Stability |
|
---|---|---|---|
ZC
|
- | - | |
ZK
(EEHZK1E471P)
|
〇 | 〇 | |
ZKU
(EEHZK1E561UP)
|
〇 | ◎ | |
ZSU
(EEHZS1E102UP)
|
◎ | 〇 | ![]() |
STEP❹ Propose an optimum capacitor
Product number | Rated voltage (V) | Capacitance (µF) | Rated ripple current (Arms) | Product dimensions (mm) | Durability |
---|---|---|---|---|---|
EEHZS1E102UP | 25 | 1000 | 4 (125℃/100kHz) | Φ10×16.5 | 125°C/4000h |
EEHZS1E102UV (Vibration-resistant product) | 25 | 1000 | 4 (125℃/100kHz) | Φ10×16.8 | 125°C/4000h |
Case 2: Low-height app design achieved by a reduction in the size and height of output capacitors
STEP❶ Confirm information on power elements used by the customer.
Input voltage Vin | 24V |
---|---|
Output voltage Vout | 12V |
Load current | 10A |
Switching frequency | 300kHz |
Response to load transient current | |
---|---|
Rising | 1A→10A |
Falling | 10A→1A |
Through rate | 10A/us |

STEP❷ Choosing a capacitor
■Comparative evaluation of voltage changes that occur when the capacitor responds to load transient current
<Evaluation results>
Series | ZC |
---|---|
Rated voltage | 25V |
Capacitance | 330uF |
Size | φ10x10.2 |
Ripple current | 2 Arms |
ESR | 20 mΩ |
Number of components | 2 |
Space | 240 mm2 |
![]() |
Total capacitance | 660uF |
---|---|
Size | 8 mm or less in height |
Total ripple current | 4 Arms |
Total ESR | 10 mΩ |
Number of components | - |
Space | - |
![]() |
Series | ZK | ZKU |
---|---|---|
Product number | EEHZK1E151XP | EEHZKE181XUP |
Rated voltage | 25V | 25V |
Capacitance | 150uF | 180uF |
Size | Ø6.3x7.7 mm | Ø6.3x7.7 mm |
Number of capacitors (estimate) | 5 | 4 |
Series | ZC |
---|---|
Rated voltage | 25V |
Capacitance | 330uF |
Size | φ10x10.2 |
Ripple current | 2 Arms |
ESR | 20 mΩ |
Number of components | 2 |
Space | 240 mm2 |
![]() |
Total capacitance | 660uF |
---|---|
Size | 8 mm or less in height |
Total ripple current | 4 Arms |
Total ESR | 10 mΩ |
Number of components | - |
Space | - |
![]() |
Series | ZK | ZKU |
---|---|---|
Product number | EEHZK1E151XP | EEHZKE181XUP |
Rated voltage | 25V | 25V |
Capacitance | 150uF | 180uF |
Size | Ø6.3x7.7 mm | Ø6.3x7.7 mm |
Number of capacitors (estimate) | 5 | 4 |
STEP❸ Examining the capacitor
Capacitor Series |
Mounting area Reduction effects |
Rising 1 A → 10 A (spec:△V=600mV) |
Falling 10 A → 1 A (spec:△V=600mV) |
Space saving |
Output voltage Stability |
|||
---|---|---|---|---|---|---|---|---|
![]() |
![]() |
|||||||
ZC
25V 330uF
ø10x10.2mm |
![]() |
255mV | - | 260mV | - | - | - | |
ZK
(EEHZK1E151XP)
25V 150uF
ø6.3x7.7mm |
![]() +10% |
249mV | Improved | 251mV | Improved | × | 〇 | |
ZKU
(EEHZKE181XUP)
25V 180uF
ø6.3x7.7mm |
![]() -10% |
250mV | Improved | 253mV | Improved | 〇 | 〇 | ![]() |
Capacitor Series | Mounting area Reduction effects |
Rising 1 A → 10 A (spec:△V=600mV) |
Falling 10 A → 1 A (spec:△V=600mV) |
||
---|---|---|---|---|---|
![]() |
![]() |
||||
ZC
|
![]() |
255mV | - | 260mV | - |
ZK
(EEHZK1E151XP)
|
![]() +10% |
249mV | Improved | 251mV | Improved |
ZKU
(EEHZKE181XUP)
|
![]() -10% |
250mV | Improved | 253mV | Improved |

Capacitor Series | Space saving |
Output voltage Stability |
|
---|---|---|---|
ZC
|
- | - | |
ZK
(EEHZK1E151XP)
|
× | 〇 | |
ZKU
(EEHZKE181XUP)
|
〇 | 〇 | ![]() |
STEP❹ Propose an optimum capacitor
Product number | Rated voltage (V) | Capacitance (µF) | Rated ripple current (Arms) | Product dimensions (mm) | Durability |
---|---|---|---|---|---|
EEHZKE181XUP | 25 | 180 | 1.8 (125℃/100kHz) | Φ6.3×7.7 | 125°C/4000h |
EEHZKE181XUV (Vibration-resistant product) | 25 | 180 | 4 (125℃/100kHz) | Φ6.3×7.7 | 125°C/4000h |
Case 3: Space saving in the board mounting area by a reduction in the size of output capacitors
STEP❶ Confirm information on power elements used by the customer.
Input voltage Vin | 24V |
---|---|
Output voltage Vout | 12V |
Load current | 10A |
Switching frequency | 300kHz |
Response to load transient current | |
---|---|
Rising | 1A→10A |
Falling | 10A→1A |
Through rate | 10A/us |

STEP❷ Choosing a capacitor
■ Comparative evaluation of voltage changes that occur when the capacitor responds to load transient current
<Evaluation results>
Series | ZC |
---|---|
Rated voltage | 25V |
Capacitance | 330uF |
Size | φ10x10.2 |
Ripple current | 2 Arms |
ESR | 20 mΩ |
Number of components | 3 |
Space | 360 mm2 |
![]() |
Total capacitance | 1000uF |
---|---|
Size | φ10 or less |
Total ripple current | 6 Arms |
Total ESR | 6.7 mΩ |
Number of components | 3 |
Space | 360 mm2or less |
![]() |
Series | ZKU |
---|---|
Product number | EEHZK1E331UP |
Rated voltage | 25V |
Capacitance | 330uF |
Size | ø8x10.2 mm |
Number of capacitors (estimate) | 3 |
Series | ZC |
---|---|
Capacitance | 25V |
Capacitance | 330uF |
Size | φ10x10.2 |
Ripple current | 2 Arms |
ESR | 20 mΩ |
Number of components | 3 |
Space | 360 mm2 |
![]() |
Total capacitance | 1000uF |
---|---|
Size | φ10 or less |
Total ripple current | 6 Arms |
Total ESR | 6.7 mΩ |
Number of components | 1~2 |
Space | 240 mm2 |
![]() |
Series | ZKU |
---|---|
Product number | EEHZK1E331UP |
Rated voltage | 25V |
Capacitance | 330uF |
Size | ø8x10.2 mm |
Number of capacitors (estimate) | 3 |
STEP❸ Examining the capacitor
Capacitor Series |
Mounting area Reduction effects |
Rising 1 A → 10 A (spec:△V=600mV) |
Falling 10 A → 1 A (spec:△V=600mV) |
Space saving |
Output voltage Stability |
|||
---|---|---|---|---|---|---|---|---|
![]() |
![]() |
|||||||
ZC
25V330uF
ø10x10.2mm |
![]() |
224mV | - | 234mV | - | - | - | |
ZKU
(EEHZK1E331UP)
25V 330uF
ø8x10.2mm |
![]() -25% |
222mV | Equal to the conventional type |
230mV | Equal to the conventional type |
〇 | 〇 | ![]() |
Capacitor Series | Mounting area Reduction effects |
Rising 1 A → 10 A (spec:△V=600mV) |
Falling 10 A → 1 A (spec:△V=600mV) |
||
---|---|---|---|---|---|
![]() |
![]() |
||||
ZC
|
![]() |
224mV | - | 234mV | - |
ZKU
(EEHZK1E331UP)
|
![]() -25% |
222mV | Equal to the conventional type |
230mV | Equal to the conventional type |

Capacitor Series | Space saving |
Output voltage Stability |
|
---|---|---|---|
ZC
|
- | - | |
ZKU
(EEHZK1E331UP)
|
〇 | 〇 | ![]() |
STEP❹ Propose an optimum capacitor
Product number | Rated voltage (V) | Capacitance (µF) | Rated ripple current (Arms) | Product dimensions (mm) | Durability |
---|---|---|---|---|---|
EEHZK1E331UP | 25 | 330 | 2 (125℃/100kHz) | Φ8×10.2 | 125°C/4000h |
EEHZK1E331UV (Vibration-resistant product) | 25 | 330 | 4 (125℃/100kHz) | Φ8×10.2 | 125°C/4000h |