EEE-1EA330WR Panasonic Capacitor Polarised (Other) In Stock
The EEE-1EA330WR is a Panasonic 33 µF, 25 V SMD aluminum electrolytic capacitor with a ±20% tolerance, supplied on a full reel for automated assembly. It features a compact surface-mount radial case and is suited for decoupling and bulk filtering in space-constrained PCB designs across consumer, industrial, and telecommunications equipment.
- Manufacturer
- Panasonic
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- EEE-1EA330WR Datasheet PDF
- Category
- Capacitor Polarised
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 33 µF capacitance at 25 V rating provides robust decoupling headroom for 12 V and 15 V rail applications
- SMD surface-mount package enables high-density automated pick-and-place PCB assembly
- Panasonic EEE series construction delivers stable capacitance over -40 °C to 105 °C operating range
- Full reel packaging (typically 1000 to 2000 pieces) minimizes change-overs on high-volume production lines
- ±20% capacitance tolerance meets standard bulk filter requirements without precision-grade cost premium
Applications
The EEE-1EA330WR is commonly used as an output bulk capacitor on DC-DC converter and LDO regulator outputs where 33 µF at 25 V is needed to suppress switching ripple and stabilize the supply rail. Its SMD form factor makes it suitable for compact power-management modules, IoT gateway boards, and telecommunications line cards where board space is at a premium. The device also serves as a bypass capacitor for microprocessor VCC rails, filtering transient load spikes on 5 V and 12 V supplies in industrial control systems.
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 capacitance, voltage, and tolerance does EEE-1EA330WR offer for power rail decoupling?
The EEE-1EA330WR provides 33 µF of capacitance rated at 25 V with a ±20% tolerance. This means the actual capacitance can range from 26.4 µF to 39.6 µF under standard test conditions, which is acceptable for bulk power supply filtering where exact values are not critical. The 25 V rating provides a comfortable safety margin when used on 5 V, 12 V, or 15 V rails.
How does the SMD package of EEE-1EA330WR simplify high-volume PCB assembly compared to radial through-hole capacitors?
The SMD package of EEE-1EA330WR allows fully automated placement via pick-and-place machines and reflow soldering, eliminating the need for manual insertion or wave-soldering fixtures required by through-hole radial capacitors. At 33 µF and 25 V, SMD electrolytic capacitors occupy roughly 30% to 50% less board area than equivalent radial through-hole parts, and the full-reel packaging format reduces component change-overs during high-volume production runs.
What is the operating temperature range of EEE-1EA330WR, and can it be used near heat-generating components?
The Panasonic EEE series SMD aluminum electrolytic capacitors are rated for operation from -40 °C to 105 °C. Designers should ensure the actual ambient temperature at the capacitor location, accounting for nearby component self-heating, remains below 105 °C to avoid accelerated electrolyte dry-out and shortened capacitor life. For applications with significant thermal loading, mounting EEE-1EA330WR at least 5 mm away from power inductors or high-dissipation regulators is recommended.
When is EEE-1EA330WR preferred over a 33 µF ceramic MLCC capacitor in a DC-DC converter design?
The EEE-1EA330WR is preferred when cost is a primary concern, as 33 µF ceramic MLCCs in X5R/X7R dielectrics at 25 V can cost 5 to 10 times more per unit. Aluminum electrolytics also exhibit lower DC bias derating than ceramic capacitors — a 33 µF ceramic at 25 V may lose 50% to 80% of its capacitance under DC bias, whereas the EEE-1EA330WR maintains near-rated capacitance. The trade-off is higher ESR and larger physical size compared to stacked MLCCs.
How is EEE-1EA330WR supplied, and what reel quantities are typical for production procurement?
The EEE-1EA330WR is supplied on a full reel, which for this SMD electrolytic series typically contains 1000 pieces or 2000 pieces per reel depending on component body size. Full-reel purchasing reduces per-unit cost and is essential for uninterrupted automated production runs. The 'WR' suffix in the part number indicates reel packaging, and distributors generally stock both cut-tape and full-reel options, with minimum order quantities of 10 pieces for cut tape.
Related Guides
ECMF02-4CMX8 Common-Mode Filter with ESD Protection: Selection Guide
Compare ECMF02-4CMX8 vs ECMF02-2AMX6, ECMF04-4HSM10, and other ST ECMF filters. Choose the right 4-channel common-mode filter with ESD protection for USB 2.0.
Jun 20, 2026
AD5204 Quad Digital Potentiometer Selection Guide (2026)
How to choose the right AD5204 quad digital potentiometer: compare 10kΩ vs 100kΩ variants, TSSOP vs SOIC packages, and SPI interface options for your design.
Jun 20, 2026
0402 10uF X5R Decoupling Design Guide for Compact Digital Rails
Application note for using CL05A106MP5NUNC-class 0402 10uF X5R MLCCs in compact digital rail decoupling designs.
Jun 19, 2026
How to Choose an 0805 10uF MLCC for Decoupling and Bulk Capacitance
Selection guide for choosing 0805 10uF MLCCs around CL21A106KOQNNNE, covering derating, dielectric, package, and sourcing checks.
Jun 19, 2026
Why Buy from FindMyChip
About Panasonic
Panasonic is a leading electronic component manufacturer. FindMyChip sources Panasonic ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”