Conductive Polymer Hybrid Aluminum Electrolytic Capacitor ZS Series

With the growing demand for eco-friendly cars, energy efficiency, and the need to comply with environmental regulations, vehicles are rapidly shifting from gasoline-powered to hybrid electric and electric vehicles. Now, more vehicles are using drive systems consisting of a gasoline engine with motor assistance (48 V system [1], etc.), and the integration of mechanical and electrical components [2], which involves switching from mechanical to motor drive and electronic control, is underway. These changes have increased the need for the miniaturization and weight reduction of ECUs and stabilization measures for power supply circuits in response to increases in current values. Capacitors mounted in power supply circuits are now increasingly required to correspond to a large current and capacity. To respond to these requirements, Panasonic has commercialized the surface-mounted ZS Series Conductive Polymer Hybrid Aluminum Electrolytic Capacitors.

Features of ZS Series

• Larger
  current
• Larger
  capacitance
• High
  vibration-
  resistance

1. Contribute to ECU miniaturization and weight reduction by achieving a larger current.

   It was difficult for conventional products, with a maximum size of 10 mm in diameter and 10.2 mm in height, to correspond to a larger current of 100 to 200 A. By adopting a unique new structure and a polymer impregnation method, the new products, with a size of 10 mm in diameter and 16.5 mm in height, lower the capacitor's internal resistance value, achieving a current 2.5 times larger than conventional products. This will contribute to ECU miniaturization and weight reduction.

   Ripple current value

   ZC 63V : 1400mA ⇒ ZS 63V：3500mA

   [2.5 times the conventional product (ZC)]

2. Contribute to ECU miniaturization and weight reduction by achieving a larger capacity.

   The new products have achieved a capacity 1.8 times larger than conventional products by increasing the Aluminum foil area through the adoption of a unique Aluminum foil material technology and a new structure design. This will decrease the quantity of capacitors used and required board space, contributing to ECU miniaturization and weight reduction.

   Capacitance

   ZC 63V : 82μF ⇒ ZS 63V：150μF

   [1.8 times the conventional product (ZC)]

   
   

   Achieving a larger current and capacitance than conventional products with the same board area decreases the quantity of capacitors used and contributes to reductions in required board space and weight.

3. Excellent vibration resistance eliminates the need for anti-vibration reinforcement during mounting processes, allowing customers to streamline their production processes.

   The conventional ECU board mounting process requires anti-vibration measures, such as anchoring components with adhesives, to make the ECU resistant to vibration if using non-vibration-resistant components. The developed capacitors have achieved anti-vibration performance high enough to withstand a vibration acceleration of 30 G, making such anti-vibration measures unnecessary, thus allowing customers to streamline their production processes.

   Vibration acceleration resistance

   Conventional structure: 10 G

   

   Vibration-resistant structure: 30 G

   [Approx.3 times the conventional structure]

   

   

   

   Contributing to the elimination of customers' need to take
   measures against vibration during mounting processes

Specification of ZS Series

Applications of ZS series

Case study of ZS Series

● 48V system (Inverter Power Supply) Space saving of board

DC-Link
smoothing
capacitor

	ZC Series		ZS Series
Item	ø10 x 10.2 mm 63 V / 82 μF		ø10 x 16.5 mm 63 V / 150 μF
quantity	21 pcs		9 pcs
Ripple current	Total 29.4 A (1.4 A x 21 pcs)		Total 31.5 A (3.5 A x 9 pcs)
Mounting area	100 %		43 %