PH series 470uF 16V

The PH series 470µF 16V polymer capacitor is rated for an impressive 6.5A RMS ripple current at 100kHz and 105°C. This high ripple current capability is achieved through the ultra-low ESR of just 5mΩ. The ripple current rating varies with frequency: At 100kHz: 6.5A RMS (rated), At 300kHz: 5.5A RMS, At 500kHz: 4.5A RMS. The high ripple current capability makes these capacitors ideal for DC-DC converter output filtering where large ripple currents are present. Power dissipation at rated ripple current is P = I² × ESR = 6.5² × 0.005 = 0.21W, which results in minimal self-heating. For applications with even higher ripple current requirements, multiple capacitors can be paralleled. Two capacitors in parallel provide 13A total ripple current capability with ESR of approximately 2.5mΩ.

The PH series can handle 6.5A ripple current continuously. Parallel multiple units for higher current requirements.

Polymer capacitors offer dramatically lower ESR compared to aluminum electrolytic capacitors of similar size: PH series 470µF 16V polymer: 5mΩ ESR, Equivalent electrolytic capacitor: 200-500mΩ ESR (40-100x higher). This ESR advantage provides several benefits: Output ripple voltage is reduced by 40-100x for the same ripple current, Power dissipation is reduced by 1600-10000x, Transient response is significantly improved, Efficiency is higher in power supply applications. For example, in a DC-DC converter with 3A ripple current: Using electrolytic (300mΩ ESR): Vripple = 3A × 0.3Ω = 0.9V, Power loss = 3² × 0.3 = 2.7W. Using polymer (5mΩ ESR): Vripple = 3A × 0.005 = 0.015V, Power loss = 3² × 0.005 = 0.045W. The polymer capacitor reduces ripple voltage by 60x and power loss by 60x. This is why polymer capacitors are essential for high-performance CPU power supplies and high-frequency DC-DC converters.

Use polymer capacitors when ESR below 50mΩ is required. The performance improvement over electrolytics is dramatic.

Yes, polymer capacitors can be effectively combined with electrolytic capacitors in hybrid configurations: Parallel combination - Use polymer capacitors for high-frequency ripple filtering (low ESR at 100kHz+), Use electrolytic capacitors for bulk capacitance and low-frequency energy storage. The polymer capacitors handle high-frequency ripple while electrolytics provide energy storage. Benefits of hybrid configuration: Lower cost than using all polymer capacitors, Better high-frequency performance than using all electrolytics, Improved transient response, Reduced overall ESR. Typical hybrid ratio: 1:3 to 1:5 polymer to electrolytic capacitance. For example, use 100µF polymer + 470µF electrolytic. The polymer capacitor should be placed closest to the load for best high-frequency filtering. This hybrid approach is commonly used in cost-sensitive applications where full polymer implementation would be too expensive.

Use hybrid polymer + electrolytic configuration for cost-effective high-performance power supplies.

Samwha polymer capacitors have a surge voltage rating of 1.15x to 1.2x the rated voltage. For the PH series 470µF 16V capacitor: Rated voltage: 16V DC, Surge voltage: 18.4V to 19.2V (1.15x to 1.2x). The surge voltage can be applied for short durations (typically up to 30 seconds) during power-up or transient conditions. However, continuous operation above the rated voltage will reduce capacitor lifetime and may cause permanent damage. For reliable operation, always maintain normal operating voltage below the rated voltage. The surge voltage capability is useful for handling: Power-up inrush currents, Load transient overshoots, Brief voltage spikes. Unlike electrolytic capacitors, polymer capacitors do not have a significant reforming requirement after storage. However, they should not be exposed to voltages exceeding the surge rating as this can damage the polymer material.

Design for normal operation below rated voltage. Surge rating handles brief transients only.

Yes, Samwha polymer capacitors are AEC-Q200 qualified and suitable for automotive applications. The PH series has passed rigorous automotive reliability testing including: Temperature cycling: -55°C to +105°C for 1000 cycles, High temperature operation: 1000 hours at 105°C, Mechanical shock and vibration per AEC-Q200 requirements, Humidity bias testing: 85°C/85% RH for 1000 hours. Automotive applications for polymer capacitors: LED driver output filtering - Low ESR improves efficiency and reduces LED flicker, ECU power supplies - Stable performance for engine control modules, Infotainment systems - Reliable power for displays and processors, ADAS systems - High reliability for safety-critical electronics. The solid construction is particularly advantageous for automotive applications as there is no risk of electrolyte leakage under harsh under-hood conditions. The wide temperature range of -55°C to +105°C covers all automotive operating conditions.

PH series polymer capacitors are AEC-Q200 qualified and ideal for automotive LED drivers and ECU power supplies.

Samwha polymer capacitors are compatible with standard reflow soldering processes: Reflow soldering (recommended) - Peak temperature: 250°C maximum, Time above 217°C: 60-90 seconds maximum, Preheat: 150-180°C for 60-120 seconds. The PH series uses high-temperature polymer material that can withstand standard lead-free reflow profiles. Important precautions: Do not exceed 250°C peak temperature as this can damage the polymer material, Limit time above 217°C to prevent thermal degradation, Allow capacitors to cool naturally after soldering, Do not wash capacitors unless specified (some series are washable). Hand soldering is not recommended for SMD polymer capacitors due to difficulty in controlling temperature. The reflow profile should follow standard IPC/JEDEC J-STD-020 guidelines for lead-free solder. Polymer capacitors are less sensitive to thermal shock than electrolytic capacitors, but proper temperature control is still important for reliable solder joints.

Use standard lead-free reflow soldering with peak temperature below 250°C. Follow IPC/JEDEC guidelines.