EEE-TC1C681UP Panasonic Capacitor Polarised (Other) In Stock
The EEE-TC1C681UP is a surface-mount aluminum electrolytic capacitor from Panasonic with 680 µF capacitance, 16 V voltage rating, and a 10 × 10.2 mm cylindrical SMD form factor supplied on tape and reel. Key specs include a polarized aluminum electrolyte construction with low ESR characteristics for efficient power decoupling, long service life, and a maximum operating temperature of +105°C. Designed for bulk output filtering, input decoupling, and energy storage in power supplies, DC-DC converters, audio amplifiers, and consumer electronics.
- Manufacturer
- Panasonic
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- EEE-TC1C681UP Datasheet PDF
- Category
- Capacitor Polarised
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 680 µF at 16 V in a compact 10 × 10.2 mm SMD package delivers high capacitance density for bulk output filtering
- Low ESR aluminum electrolytic construction supports high ripple current handling in switching power supply output stages
- 105°C maximum operating temperature rating ensures long service life in thermally demanding power conversion environments
- Tape-and-reel (T&R) packaging enables high-speed automated SMT placement for volume electronics manufacturing
Applications
The EEE-TC1C681UP is used as a bulk output filter capacitor in 5 V and 12 V switching power supplies, providing 680 µF of energy storage to reduce output voltage ripple and support transient load steps in computing and consumer electronics. It is also deployed in audio amplifier power rails and motor drive DC bus filtering, where large capacitance values at 16 V rating are needed to maintain stable supply voltage during peak current demand. The SMD format and tape-and-reel packaging make it well-suited for high-volume automated assembly lines producing televisions, set-top boxes, and industrial control panels.
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 680 µF capacitance of the EEE-TC1C681UP help reduce output voltage ripple in a 5 V switching power supply?
A 680 µF output filter capacitor at 5 V stores enough charge to smooth the output voltage ripple of a typical 100 kHz to 500 kHz switching converter. The ripple voltage is approximately ΔV = I_ripple / (8 × f × C), so at 1 A ripple current and 200 kHz switching frequency, the 680 µF capacitor limits peak-to-peak ripple to about 0.9 mV, achieving well below the typical 50 mV ripple specification for microprocessor and logic supply rails.
Why does the 16 V voltage rating of the EEE-TC1C681UP matter for reliable long-term use in a 12 V power rail application?
Electrolytic capacitors are typically derated to 80% of their rated voltage for reliable long-term operation, meaning the EEE-TC1C681UP's 16 V rating effectively provides a safe continuous working voltage of 12.8 V, just barely covering a 12 V rail with minimal margin. For a 12 V application, a 25 V rated capacitor is recommended to provide proper derating, while the 16 V EEE-TC1C681UP is best matched to 5 V or 9 V rails where the voltage stress remains comfortably below 80% of the 16 V rating.
For a compact power supply board, how does the 10 × 10.2 mm SMD form factor of the EEE-TC1C681UP compare to through-hole alternatives?
The EEE-TC1C681UP's 10 mm diameter × 10.2 mm height SMD can footprint eliminates the through-hole drilling requirement, allowing both sides of the PCB to be used for other components and reducing board thickness. Compared to a comparable radial through-hole 680 µF 16 V capacitor in a 10 × 20 mm body, the SMD version saves approximately 50% board height, enabling slimmer product profiles in TVs, industrial controllers, and computing equipment while being compatible with automated SMT reflow assembly.
What is the maximum operating temperature of the EEE-TC1C681UP and how does it affect the rated service life?
The EEE-TC1C681UP is rated for a maximum operating temperature of +105°C. According to the Arrhenius rule governing electrolytic capacitor aging, operating at +105°C consumes the rated service life at the fastest rate; each 10°C reduction approximately doubles the expected operating life. At a typical ambient temperature of +65°C — the case temperature in a ventilated power supply — the EEE-TC1C681UP's effective service life extends to 4 to 8 times its rated hours, making it suitable for long-lifecycle industrial and consumer equipment.
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