EEE-HA1H2R2AR Panasonic Capacitor Polarised (Other) In Stock
EEE-HA1H2R2AR is a surface-mount aluminum electrolytic capacitor from Panasonic with 2.2 µF capacitance, 50 V voltage rating, and ±20% tolerance. Compact SMD form factor suits high-density PCB designs for power supply decoupling and filtering. Ideal for consumer electronics, industrial power converters, and DC-DC switching regulators. Available from stock with worldwide shipping.
- Manufacturer
- Panasonic
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- EEE-HA1H2R2AR Datasheet PDF
- Category
- Capacitor Polarised
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 2.2 µF capacitance at 50 V rating provides reliable energy storage and filtering in compact SMD designs
- ±20% capacitance tolerance meets standard bulk decoupling requirements without tight-tolerance premium cost
- Surface-mount (SMD) package enables automated placement in high-volume PCB assembly lines
- Panasonic HA series aluminum electrolytic construction delivers long-life low-ESR performance in power supply rails
Applications
EEE-HA1H2R2AR is widely used as a bulk decoupling capacitor on 5 V and 12 V power supply rails in industrial control boards, set-top boxes, and LED driver circuits. Its 2.2 µF / 50 V rating makes it suitable for input and output filtering in DC-DC switching converters and linear regulators where mid-range capacitance is required. The SMD form factor allows it to be placed close to power pins of ICs, reducing loop inductance and improving transient response in high-frequency switching 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
How does the 50 V rating of EEE-HA1H2R2AR affect its use in 12 V and 24 V DC bus filtering?
The EEE-HA1H2R2AR is rated at 50 V, providing a comfortable 2x to 4x derating margin when used on 12 V or 24 V DC buses. Capacitor reliability guidelines recommend operating at no more than 80% of rated voltage, so the 50 V device can safely handle up to 40 V continuous DC, making it suitable for 24 V industrial bus decoupling without voltage stress. The 2.2 µF capacitance at 50 V stores approximately 2.75 µJ of energy, sufficient for transient suppression on point-of-load converters in motor drive and power supply circuits.
In a DC-DC buck converter design, what role does the 2.2 µF EEE-HA1H2R2AR play at the output filter stage?
At the output of a DC-DC buck converter switching at 100 kHz to 500 kHz, the 2.2 µF EEE-HA1H2R2AR provides mid-frequency energy storage that supplements smaller ceramic capacitors. The aluminum electrolytic construction offers higher capacitance per unit area than film capacitors at 50 V, and the 2.2 µF value helps filter ripple voltage on 5 V or 12 V output rails. Combined with 100 nF ceramic bypass capacitors, this 2.2 µF bulk capacitor reduces output voltage ripple and improves load transient recovery time in switched-mode power supplies.
When should EEE-HA1H2R2AR be chosen over a ceramic capacitor of the same 2.2 µF value for a 50 V rail?
Ceramic capacitors rated at 2.2 µF and 50 V are typically X5R or X7R types that exhibit significant capacitance loss (up to 80%) under DC bias near 50 V, effectively delivering less than 1 µF at rated voltage. The EEE-HA1H2R2AR aluminum electrolytic maintains its 2.2 µF (within ±20%) at 50 V DC, making it preferable where stable bulk capacitance is required under high-voltage DC bias. For cost-sensitive designs requiring true 2.2 µF at 50 V, the Panasonic HA series electrolytic is more economical than equivalent-voltage MLCCs of the same capacitance.
How does the SMD package of EEE-HA1H2R2AR integrate into automated PCB assembly for LED driver boards?
The EEE-HA1H2R2AR's surface-mount package allows automated pick-and-place machines to position the 2.2 µF capacitor directly on LED driver PCBs without through-hole drilling, reducing board manufacturing steps. SMD placement enables closer component spacing, allowing the capacitor to be located within 2 mm to 5 mm of the driver IC's VCC pin to minimize parasitic inductance on the 50 V power rail. In high-volume LED fixture production, SMD eliminates manual insertion of radial-lead electrolytics, lowering assembly cost per unit and improving placement accuracy in automated reflow soldering lines.
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