In recent years, ECUs mounted on vehicles have proliferated, and their power consumption has increased in step with vehicle electrification and the rise of autonomous driving. In particular, applications such as advanced driver assistance systems (ADAS), electric power steering (EPS), and automatic braking require a redundant design with two identical circuits installed in a vehicle to improve safety, resulting in a trend towards a further increase in the number of capacitors used per ECU. However, the limited space available for installation in the vehicle body requires ECUs to process high currents in a compact size, which increases the amount of heat generated within the ECU. Therefore, capacitors are required to not only be more heat-resistant but also smaller in form factor while offering more capacitance than ever before.Recently, the company has further evolved its proprietary electrolyte and high-precision electrode foil winding technology with a view to commercial production of the ZL series capacitors.
Features
- Through Panasonic Industry’s new proprietary electrolyte technology, the company has achieved high-capacitance type capacitors*2 guaranteed to operate at 135°C, an industry first *1.
- The ZL series capacitors come in five major sizes for automotive applications and have achieved the industry's highest level*2 capacitance.
- Saves space for capacitor mounting areas, contributing to a reduction in environmental impact through the miniaturization of ECUs and a decrease in the amount of parts and materials used.
*1 As of February 28, 2024, the industry's highest capacitance models in five major sizes (ø5 x 5.8 to ø10 x 10.2) for automotive applications included in the conductive polymer hybrid aluminum capacitors are guaranteed to operate for 4,000 hours at 135°C (capacitors in sizes of ø5 and ø6 are guaranteed to operate for 2,000 hours at 135°C). (Panasonic Industry data)
*2 As of February 28, 2024, the industry's highest capacitance models in five major sizes (ø5 x 5.8 to ø10 x 10.2) for automotive applications included in the conductive polymer hybrid aluminum capacitors (Panasonic Industry data)
*2 As of February 28, 2024, the industry's highest capacitance models in five major sizes (ø5 x 5.8 to ø10 x 10.2) for automotive applications included in the conductive polymer hybrid aluminum capacitors (Panasonic Industry data)
1.Through Panasonic Industry’s new proprietary electrolyte technology, the company has achieved high-capacitance type capacitors guaranteed to operate at 135°C, an industry first .
It is difficult to stabilize the characteristics of high-capacitance electrode foils in high-temperature environments, and there have been challenges in creating capacitors featuring both high capacitance and high heat resistance. Now, the Panasonic Industry has independently developed a new electrolyte that can stabilize electrode foil characteristics even in high-temperature environments by revising the material composition. By achieving a guaranteed operating temperature of 135°C, restrictions on circuit design due to thermal control measures can be overcome, even for high-capacitance type capacitors, leading to more compact ECUs.
2.The ZL series capacitors come in five major sizes for automotive applications and have achieved the industry's highest level capacitance.
To miniaturize a capacitor while maintaining its capacitance, it is necessary to increase the capacitance of its internal electrode foils. However, high-capacitance electrode foils have lower strength than general electrode foils, making them difficult to manufacture and ensure reliability. Panasonic Industry has succeeded in the stable mass production of high-capacitance electrode foils through its proprietary high-precision foil winding technology that maximizes winding dimensions and through the evolution of uniform polymer formation technology. Consequently, the ZL series capacitors in five major sizes have achieved the industry's highest level capacitance, which is more than 1.7 times that of the company's existing standard ZC series products. ZL series capacitors achieve the same performance in a smaller size compared to ZC series capacitors.
3.Save space for capacitor mounting areas, contributing to a reduction in environmental impact through the miniaturization of ECUs and a decrease in the amount of parts and materials used.
For the desired capacitance, the ZL series offers capacitors in a smaller size than the Panasonic Industry’s existing standard ZC series products and achieves a reduction in the number of capacitors used. This saves space for capacitor mounting areas, contributing to a reduction in environmental impact through the miniaturization of equipment and a decrease in the number of parts and materials used.
Use case
Electric braking system（E-Brake）
Contributes to reducing mounting costs and saving circuit board space
Inverter circuit
| Item | ZC series |
|---|---|
| PCB area image |  |
| Part number | EEHZC1V271P |
| Size | ø10 x 10.2 mm |
| Number of use | 5 pcs |
| Total capacitance | 1350 µF |
| Total ripple current | 10 Arms |
| Total ESR | 4 mΩ |
| Mounting area | 605 mm2 |
| Life time | 125 ℃, 4000 h |
| Item | ZL series |
|---|---|
| PCB area image |  |
| Part number | EEHZL1V271P |
| Size | ø8 x 10.2 mm |
| Number of use | 4 pcs |
| Total capacitance | 1080 µF |
| Total ripple current | 11.6 Arms |
| Total ESR | 5 mΩ |
| Mounting area | 324 mm2 |
| Life time | 125 ℃, 4000 h |
Automotive OBC (On-Board Charger)
Contributes to reduction of PCB area and stable output voltage
DC/DC power supply circuit
| Item | ZC series |
|---|---|
| PCB area image |  |
| Part number | EEHZC1V151P |
| Size | ø8 x 10.2 mm |
| Number of use | 8 pcs |
| Total capacitance | 1200 µF |
| Total ripple current | 12.8 Arms |
| Total ESR | 3.3 mΩ |
| Mounting area | 578 mm2 |
| Life time | 125 ℃, 4000 h |
| Item | ZL series |
|---|---|
| PCB area image |  |
| Part number | EEHZL1V151XP |
| Size | ø6.3 x 7.7 mm |
| Number of use | 8 pcs |
| Total capacitance | 1200 µF |
| Total ripple current | 15.2 Arms |
| Total ESR | 3.25 mΩ |
| Mounting area | 426 mm2 |
| Life time | 125 ℃, 4000 h |
Line Up
| Rated voltage (V) | Case size (mm) | Capacitance (µF) | Ripple current(Arms) | ESR (mΩ) | Part number | |
|---|---|---|---|---|---|---|
| @125℃ | @135℃ | |||||
| 25 | ø5.0 x 5.8 | 82 | 1.0 | 0.6 | 58 | EEHZL1E820R |
| ø6.3 x 5.8 | 150 | 1.5 | 0.8 | 38 | EEHZL1E151P | |
| ø6.3 x 7.7 | 220 | 2.0 | 1.0 | 24 | EEHZL1E221XP | |
| ø8.0 x 10.2 | 470 | 3.0 | 2.0 | 18 | EEHZL1E471P | |
| ø10.0 x 10.2 | 680 | 3.4 | 2.3 | 14 | EEHZL1E681P | |
| 35 | ø5.0 x 5.8 | 47 | 0.9 | 0.55 | 60 | EEHZL1V470R |
| ø6.3 x 5.8 | 82 | 1.4 | 0.7 | 40 | EEHZL1V820P | |
| ø6.3 x 7.7 | 150 | 1.9 | 0.9 | 26 | EEHZL1V151XP | |
| ø8.0 x 10.2 | 270 | 2.9 | 1.9 | 20 | EEHZL1V271P | |
| ø10.0 x 10.2 | 470 | 3.3 | 2.2 | 16 | EEHZL1V471P | |
