SP-100uF-25V
Ultra-low ESR solid polymer capacitor with 100uF and 25V for high-frequency filtering.
Product Overview
Description
The SP-100uF-25V is a high-performance solid polymer aluminum capacitor designed for high-frequency filtering applications. With 100uF capacitance and ultra-low ESR of 15mOhm, it provides excellent decoupling for switching power supplies.
This surface-mount capacitor features a compact 6.3x6.3mm case size for high-density designs. The solid polymer construction provides stable performance and extremely long lifetime.
Rated for 100,000 hours at 105C with 4A ripple current, this capacitor is ideal for distributed power systems and high-reliability electronics.
Product Series
SP
Primary Application
Distributed power systems
Key Features
- Ultra-low ESR 15mOhm
- High ripple current 4A
- 100,000 hour lifetime
- SMD mounting
- Compact 6.3x6.3mm size
Specifications
| Capacitance | 100uF +/-20% |
|---|---|
| Voltage Rating | 25V DC |
| ESR | 15mOhm max @ 100kHz |
| Ripple Current | 4A @ 105C, 100kHz |
| Temperature Range | -55C to +105C |
| Lifetime | 100,000 hours @ 105C |
| Mounting | SMD |
| Dimensions | 6.3mm x 6.3mm x 6mm L |
Applications
Distributed power systems
Electronic system design
DC-DC converters
Power conversion and supply
High-frequency filtering
Electronic system design
Telecom equipment
Electronic system design
FAE Expert Insights
"The SP-100uF-25V is excellent for input filtering in DC-DC converters and distributed power systems. The 15mOhm ESR provides excellent high-frequency filtering. The compact 6.3mm size fits well in space-constrained designs. I use this capacitor for 12V and 24V input filtering with great results. The 100,000 hour lifetime ensures long-term reliability."
Excellent for input filtering; 15mOhm ESR; compact size; 100,000 hour lifetime
— Michael Zhang, BeiLuo
Frequently Asked Questions
What is the ESR of this capacitor?
The ESR (Equivalent Series Resistance) is 15mOhm maximum at 100kHz. This is approximately 10-15x lower than an equivalent aluminum electrolytic capacitor. The ultra-low ESR provides excellent filtering at high frequencies and minimizes power dissipation and heat generation. Low ESR is critical for high-frequency switching applications as it directly affects voltage ripple and power efficiency. In DC-DC converter applications, the low ESR helps maintain tight voltage regulation during load transients.
The 15mOhm ESR is excellent for high-frequency filtering applications. Select solid polymer capacitors when lowest ESR is required.
What is the ripple current rating?
Rated ripple current is 4A at 105°C and 100kHz. This high ripple current capability is enabled by the ultra-low ESR of 15mOhm. The capacitor can handle the high switching currents typical of DC-DC converters without excessive heating. At lower temperatures, even higher ripple currents can be supported - approximately 5A at 85°C. This makes the capacitor suitable for input filtering in DC-DC converters and distributed power systems where high ripple currents are present.
4A rating is suitable for most DC-DC converter input filtering applications. Consider temperature derating for accurate selection.
What is the expected lifetime?
Rated lifetime is 100,000 hours at 105C. At typical operating temperatures of 60-80C, expected lifetime extends to 200,000-400,000+ hours. Solid polymer capacitors don't dry out, maintaining performance over time.
Essentially maintenance-free for most applications.
What applications is this suitable for?
Ideal for 12V and 24V input filtering in DC-DC converters, distributed power systems, and telecom equipment. The 25V rating provides good margin for 24V systems. The compact size fits well in space-constrained designs.
Perfect for input filtering in 12V/24V systems.
How does this compare to electrolytic capacitors?
Compared to electrolytic: ESR is 10-15x lower (15mOhm vs 150-250mOhm), ripple current is 5-10x higher (4A vs 0.5-1A), lifetime is 50x longer (100,000h vs 2,000h), but cost is 3-5x higher. The performance advantages often justify the cost in critical applications.
Choose solid polymer when performance and reliability are critical; choose electrolytic for cost-sensitive applications.