ECWU2392JC9 Panasonic Capacitor (Other) In Stock
Panasonic ECWU2392JC9 is a 0.0039 µF metallized PPS film capacitor in a surface-mount package only 1.4 mm tall, offering excellent high-frequency stability and low loss for precision filtering and resonant circuits. RoHS e1-compliant. From $0.40 in stock, worldwide shipping.
- Manufacturer
- Panasonic
- Package
- Other
- Pin Count
- 2
- Lifecycle
- OBSOLETE
- Datasheet
- ECWU2392JC9 Datasheet PDF
- Category
- Capacitor
- Price
- From $0.4126(MOQ 1)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Polyethylene naphthalate (PEN) metallized film dielectric provides ultra-stable 0.0039 µF capacitance with very low dissipation factor across temperature
- Mold-less SMD construction at 1.4 mm height enables compact high-frequency filter placement in space-constrained RF and audio PCBs
- RoHS e1 and REACH compliant construction with 20-week lead time for high-reliability precision analog and RF circuit applications
Applications
The ECWU2392JC9 is suited for precision resonant tank circuits, high-frequency EMI filters, and snubber networks in switching power converters where the 0.0039 µF capacitance and low-loss film dielectric maintain stable frequency response across temperature. Its thin 1.4 mm SMD profile allows placement directly in RF signal paths on compact boards in wireless modules and precision measurement instruments. The PPS-class dielectric also makes it appropriate for audio crossover filters and analog signal conditioning circuits requiring stable capacitance at audio and supersonic frequencies up to several megahertz.
Specifications
| Pbfree Code | Yes |
| Reach Compliance Code | Compliant |
| Factory Lead Time | 20Weeks |
| YTEOL | 0 |
| Capacitance | 0.0039 µF |
| Capacitor Type | FILM CAPACITOR |
| Dielectric Material | POLYETHYLENE NAPHTHALATE |
| Height | 1.4mm |
| JESD-609 Code | e1 |
| Mounting Feature | SURFACE MOUNT |
| Negative Tolerance | 5% |
| Package Shape | RECTANGULAR PACKAGE |
| Package Style | SMT |
| Packing Method | TR, Embossed, 13 Inch |
| Positive Tolerance | 5% |
| Rated (DC) Voltage (URdc) | 250V |
| Size Code | 1913 |
| Surface Mount | YES |
| Terminal Finish | Tin/Silver/Copper (Sn/Ag/Cu) |
| Terminal Shape | WRAPAROUND |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8532.25.00.45 |
| Country of Origin | Japan |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What dielectric material does ECWU2392JC9 use, and how does it compare to X7R ceramic capacitors at 0.0039 µF?
ECWU2392JC9 uses a metallized polyethylene naphthalate (PEN) film dielectric, which offers significantly lower dissipation factor and more stable capacitance versus temperature than X7R ceramic capacitors. X7R ceramics can exhibit 15% to 20% capacitance variation over their operating temperature range and suffer from DC bias derating, which can reduce effective capacitance by an additional 30% to 50% at rated voltage. The PEN film in ECWU2392JC9 maintains its 0.0039 µF capacitance within a tight tolerance across the full operating temperature range, making it preferable in precision LC filters and timing circuits.
For a 1 MHz snubber circuit in a flyback converter, how does ECWU2392JC9 at 0.0039 µF perform compared to an equivalent ceramic snubber cap?
At 1 MHz snubber frequencies, ECWU2392JC9 provides a predictable 0.0039 µF capacitance with very low ESR and dissipation factor, which minimizes snubber power loss and reduces heat generation on the capacitor. Ceramic capacitors at 0.0039 µF in 0402 or 0603 packages are available but exhibit piezoelectric noise and capacitance degradation under the high voltage swing of a flyback switch node, where voltages may exceed 100 V transiently. The PEN film construction of ECWU2392JC9 is inherently non-piezoelectric and maintains stable capacitance under voltage stress, resulting in more consistent snubber damping performance.
How does the 1.4 mm height of ECWU2392JC9 affect its placement in RF module designs with strict board clearance requirements?
At only 1.4 mm height, ECWU2392JC9 fits within the component clearance envelope of most compact RF modules and multi-board stack assemblies where total PCB-to-PCB spacing is 2 mm to 3 mm. Taller through-hole film capacitors at equivalent 0.0039 µF values stand 5 mm or more above the PCB, making them incompatible with stacked-module RF designs. The SMD surface-mount footprint of ECWU2392JC9 also allows automated reflow placement directly adjacent to RF filter inductors and matching network components, minimizing parasitic trace inductance in 100 MHz to 1 GHz frequency ranges.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.5390 | $1.54 |
| 250+ | $0.5078 | $126.95 |
| 500+ | $0.4444 | $222.20 |
| 1000+ | $0.4126 | $412.60 |
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