ECW-U4154V17 Panasonic Capacitor (Capacitor Chip Non-polarised) In Stock
Panasonic ECW-U4154V17 is a 0.15 µF 400 VDC PEN film capacitor with 5% tolerance in a 3931 chip package. Features low ESR and high self-resonance for AC filtering and power supply applications. Available from major distributors worldwide.
- Manufacturer
- Panasonic
- Package
- Capacitor Chip Non-polarised
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- ECW-U4154V17 Datasheet PDF
- Category
- Capacitor
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 0.15 µF capacitance at 400 VDC rated voltage with tight 5% tolerance for precise filtering performance
- PEN (Polyethylene Naphthalate) film dielectric offering superior thermal stability and low dissipation factor
- Non-polarized chip capacitor in compact 3931 package enabling high-density SMT assembly in power circuits
Applications
The ECW-U4154V17 is well suited for EMI filtering, snubber circuits, and AC coupling in switching power supplies and motor drives operating up to 400 VDC. Its PEN film dielectric delivers low dissipation factor and excellent frequency stability for resonant converter tank circuits. Industrial inverters, UPS systems, and lighting ballasts all benefit from its combination of 0.15 µF capacitance and high-voltage capability.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the rated voltage and capacitance of the ECW-U4154V17 film capacitor?
The ECW-U4154V17 is rated at 0.15 µF capacitance and 400 VDC working voltage, with a 5% tolerance. This combination makes it suitable for snubber and EMI filtering roles in switching power supply designs operating at high bus voltages.
Which dielectric technology does the ECW-U4154V17 use, and why does it matter for thermal performance?
The ECW-U4154V17 uses PEN (Polyethylene Naphthalate) film dielectric, which provides a lower dissipation factor and better capacitance stability across a -55°C to +125°C operating temperature range compared to PET film alternatives, making it preferable in high-ambient-temperature environments.
Can ECW-U4154V17 replace electrolytic capacitors in 400 V snubber circuits?
Yes, for snubber duty at 400 VDC the ECW-U4154V17's non-polarized PEN film construction and 0.15 µF capacitance offer indefinite AC voltage endurance that electrolytic capacitors cannot match. Film capacitors handle repetitive peak currents without degrading, making them superior in IGBT and MOSFET snubber networks.
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