We would like to introduce examples of Panasonic hybrid capacitors adopted by customers.
Component proposal flow
STEP❶
Confirm information on power elements used by the customer.
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.
STEP❷
Choosing a capacitor
Based on design information given by the customer, we choose a capacitor that best fits the customer’s product.
STEP❸
Examining the capacitor
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.
STEP❹
Propose an optimum capacitor
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 | |
Equal performance in important power-related characteristics (a voltage change in response to a sharp change in load current) has been confirmed. Reducing the number of capacitors is possible.
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 | |
Equal performance in important power-related characteristics (a voltage change in response to a sharp change in load current) has been confirmed. Replacing the current capacitor with a smaller capacitor in size is possible.
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 | |
Equal performance in important power-related characteristics (a voltage change in response to a sharp change in load current) has been confirmed. Replacing the current capacitor with a smaller capacitor in size is possible.
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 |