ECW-U1684KCV Panasonic Capacitor (Other) In Stock
Panasonic ECW-U1684KCV is a 0.68 µF, 100 V stacked metallized polyphenylene sulfide (PPS) film capacitor with mold-less construction for high-frequency and high-stability circuit applications. Features low dissipation factor, excellent temperature stability from -55°C to +125°C, and compact radial lead packaging. Widely available through global distribution with competitive pricing.
- Manufacturer
- Panasonic
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- ECW-U1684KCV Datasheet PDF
- Category
- Capacitor
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 0.68 µF capacitance at 100 V DC rating for medium-voltage filter and timing circuit applications
- PPS film dielectric provides dissipation factor below 0.05% at 1 kHz for low-loss high-frequency performance
- Wide temperature range from -55°C to +125°C with ±1% capacitance stability over temperature
- Mold-less construction reduces package size and weight compared to conventional resin-molded film capacitors
- Self-healing metallized electrode design ensures long-term reliability after minor dielectric breakdown events
Applications
ECW-U1684KCV is used in precision timing, resonant filter, and switching power supply snubber circuits requiring stable 0.68 µF capacitance at up to 100 V. Its low dissipation factor and wide temperature range make it suitable for high-frequency inverter and motor drive applications operating between -55°C and 125°C. The PPS dielectric also makes it a preferred choice for audio signal path and measurement instrument circuits demanding low noise and distortion.
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 are the capacitance and voltage rating of the ECW-U1684KCV, and what tolerance applies?
The ECW-U1684KCV has a nominal capacitance of 0.68 µF with a ±10% tolerance (K tolerance code) and a rated DC voltage of 100 V. This combination is well suited for timing networks and bypass applications in circuits where capacitance variation within ±68 nF is acceptable and the operating voltage does not exceed 100 V DC under normal conditions.
How does the PPS dielectric in ECW-U1684KCV compare to polyester (PET) film for high-frequency filter designs?
PPS film in the ECW-U1684KCV exhibits a dissipation factor below 0.05% at 1 kHz, compared to polyester film capacitors which typically show 0.3% to 1.0% dissipation at the same frequency. This 6x to 20x improvement in dissipation factor translates to significantly lower ESR in LC filter circuits above 10 kHz, reducing thermal losses and improving filter insertion loss in switching power supply output stages and EMI suppression networks.
Over what temperature range does ECW-U1684KCV maintain stable capacitance, and what drift rate is expected?
ECW-U1684KCV operates reliably from -55°C to +125°C with a capacitance drift of approximately ±1% across the full temperature range. This tight temperature coefficient, substantially better than the ±15% variation of Class II ceramic capacitors over the same range, makes the ECW-U1684KCV suitable for precision timing and resonant circuits in automotive and industrial equipment where ambient temperature fluctuates widely.
What circuit protection does the metallized self-healing electrode provide in ECW-U1684KCV?
The ECW-U1684KCV uses metallized PPS electrodes that self-heal after localized dielectric breakdown by vaporizing the thin metal film around the fault site, clearing the short without catastrophic failure. This mechanism allows the capacitor to survive transient overvoltage events up to 150% of rated voltage and extends service life in snubber and surge absorption circuits where occasional voltage spikes above the 100 V DC rating occur.
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