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Murata DE5 Series Safety Capacitors for Enhanced EV Reliability

Murata Manufacturing has introduced the DE5 series of automotive safety-certified lead-type disc ceramic capacitors. The new series provides higher voltage tolerance, stronger surge protection, and improved electrical isolation for electric vehicle on-board chargers, industrial power systems, and high-voltage AC filtering applications.

Key Specifications

• Safety certification: IEC 60384-14 X1/Y1
• Y1-rated AC voltage: 500 Vac (r.m.s.)
• X1-rated AC voltage: 760 Vac
• DC rated voltage: 1,500 V
• Impulse withstand voltage: 12 kV (increased from 5 kV in previous series)
• Capacitance range: 100 pF to 4,700 pF
• Temperature characteristics: B and E
• Lead spacing: 10 mm (through-hole mounting)
• Package diameter: 6 mm to 14 mm (depending on capacitance)
• Automotive qualification: AEC-Q200 Rev. E

Compared with Murata’s earlier DE6 family (300 Vac Y1 rating), the DE5 series offers significantly higher voltage and impulse withstand capability, giving designers greater safety margins in modern high-voltage EV and industrial systems.

Target Applications

• Electric vehicle on-board chargers (OBC)
• High-voltage AC input filters
• EV charging infrastructure
• Industrial power supplies
• Renewable energy equipment
• EMI suppression circuits requiring reinforced insulation

The DE5 series is designed for applications where conventional Y2-class capacitors no longer provide sufficient safety margin, helping improve reliability and surge immunity in demanding automotive and industrial environments.

Source: Electronics For You