EEE-1VA221UAP Panasonic Capacitor Polarised (Other) In Stock
Panasonic EEE-1VA221UAP is a 220 µF, 35 V surface mount aluminum electrolytic capacitor with ±20% tolerance in a compact SMD can package. Designed for bulk decoupling and energy storage in power supply circuits. Available from authorized distributors with worldwide shipping.
- Manufacturer
- Panasonic
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- EEE-1VA221UAP Datasheet PDF
- Category
- Capacitor Polarised
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 220 µF capacitance at 35 V rating provides substantial bulk energy storage for switched-mode power supply output filtering
- SMD can package enables automated reflow soldering for high-volume PCB assembly without through-hole processing
- Panasonic EEE series long-life construction rated for extended operating hours at elevated temperatures up to 105°C
Applications
The EEE-1VA221UAP is commonly used as an output bulk capacitor in DC-DC converters and linear regulators operating from 24 V or 28 V bus rails, where 220 µF at 35 V provides adequate charge reservoir to suppress load transients. It is also suitable for input filtering on 24 V industrial power supplies and motor drive auxiliary rails where surface mount assembly is required. Consumer electronics power boards and server voltage regulator modules benefit from its long-life 105°C rating.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for EEE-1VA221UAP:
suggested
suggested
Frequently Asked Questions
Why would a 35 V rated capacitor be selected for a 24 V power supply output rail?
Using a 35 V rated EEE-1VA221UAP on a 24 V rail provides approximately 46% voltage derating, which is a standard practice that significantly extends capacitor lifetime by reducing dielectric stress. Electrolytic capacitors operated at 50% to 60% of their rated voltage typically achieve two to four times the rated hours of life compared to units run at full voltage, an important factor for 24 V industrial supply designs targeting 10-year or longer service.
How does the 220 µF capacitance help regulate a 5 A load transient on a DC-DC converter output?
A 220 µF output capacitor limits the initial voltage droop during a fast 5 A load step according to dV = I × dt / C; at 220 µF and a 1 µs response time, a 5 A step produces roughly 23 mV of droop before the control loop responds, which is within the ±5% regulation window of most 24 V or 12 V outputs. Combining the EEE-1VA221UAP bulk capacitor with lower-ESR ceramic capacitors achieves both high-frequency and low-frequency transient suppression.
What temperature rating does the EEE-1VA221UAP carry and how does it affect placement near power dissipating components?
The EEE-1VA221UAP carries a 105°C maximum operating temperature rating, meaning it can be placed near power transistors or inductors that raise local ambient temperature above 85°C without exceeding rated life. For every 10°C reduction in operating temperature below 105°C, the expected capacitor lifetime approximately doubles per the Arrhenius rule, so a design keeping the capacitor at 75°C ambient could realize four times the rated life hours compared to 105°C operation.
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