ECW-U4472V17 Panasonic Capacitor Network (Capacitor Chip Non-polarised) In Stock
Panasonic ECW-U4472V17 is a 0.0047 µF 400 V PEN film capacitor with 5% tolerance in a compact stacked 4.8 x 3.3 x 1.4 mm surface mount package rated to 85°C. Designed for high-voltage filtering and coupling in power electronics and audio circuits. Available in tape-and-reel from stock worldwide with fast shipping.
- Manufacturer
- Panasonic
- Package
- Capacitor Chip Non-polarised
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- ECW-U4472V17 Datasheet PDF
- Category
- Capacitor Network
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 0.0047 µF capacitance at 400 V rating enabling use in high-voltage filtering, snubber, and coupling applications up to 400 V
- PEN (polyethylene naphthalate) film dielectric providing excellent self-healing properties and stable capacitance over temperature
- 5% tolerance in a compact stacked 4.8 x 3.3 x 1.4 mm SMT package rated to 85°C for precision high-voltage circuits
- Tape-and-reel (T/R) packaging supporting automated SMT assembly in high-volume power electronics production
Applications
The ECW-U4472V17 is used in high-voltage power electronics applications including EMI filtering, snubber networks, and coupling circuits in switching power supplies and inverters operating up to 400 V. Its PEN film dielectric and compact 4.8 x 3.3 x 1.4 mm stacked SMT package make it suitable for noise suppression and resonance damping in motor drives, solar inverters, and industrial power converters where stable 0.0047 µF capacitance at elevated voltage is required. The 85°C temperature rating also suits audio amplifier coupling and AC signal filtering applications.
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 voltage and capacitance rating does the ECW-U4472V17 provide, and what circuit functions does this enable?
The ECW-U4472V17 offers 0.0047 µF capacitance at a 400 V voltage rating with 5% tolerance. This combination enables use in high-voltage snubber networks, EMI filtering, and AC coupling circuits in switching power supplies, motor drives, and inverters where precise capacitance and high voltage handling are required simultaneously.
What is the dielectric type of the ECW-U4472V17 and why does it matter for self-healing and reliability?
The ECW-U4472V17 uses a PEN (polyethylene naphthalate) film dielectric, which has excellent self-healing properties. When a localized dielectric breakdown occurs, the metallization evaporates around the fault site, restoring insulation without catastrophic failure. This makes PEN film capacitors more reliable than ceramic alternatives in high-voltage applications up to 400 V and 85°C.
How does the compact package size of the ECW-U4472V17 compare to traditional leaded film capacitors in power supply designs?
The ECW-U4472V17's stacked SMT package measures only 4.8 x 3.3 x 1.4 mm, which is significantly smaller than traditional leaded film capacitors with the same 0.0047 µF at 400 V rating. This miniaturization allows engineers to use automated SMT reflow soldering, reduce PCB area, and increase power density in switching power supplies and inverter designs.
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