Key selection criteria for polarized aluminum electrolytic capacitors in audio applications
Low ESR (Equivalent Series Resistance): Ordinary liquid aluminum electrolytic capacitors have high ESR, which can cause phase distortion and losses in high-frequency ranges. For audio applications, high-frequency low-impedance types or solid-state polymer aluminum electrolytic capacitors are preferred, as the latter features even lower ESR and can maintain distortion (THD) below 0.01%, with superior high-frequency response.
Pressure Residual Margin: The rated voltage should have sufficient margin (recommended at 1.5-2 times the operating voltage) to prevent transient high voltage from penetrating the oxide film, which could lead to failure or leakage.
Lifespan and Temperature: Focus on the temperature resistance grade of the electrolyte (e.g., 105°C). Lifespan degrades rapidly in high-temperature environments, so selection should be based on the equipment's heat dissipation conditions.
Cross Replacement to ROE ELNA PHILLIPS Polarized E-cap
WEET Axial Polarized Aluminum Electrolytic Capacitors are all 105C and 2000H life time
14700uF 63V φ25*44
247uF 63V φ18*36
3100uF 63V φ10*21
4470uF 100V φ18*36
WEET Radial Polarized Aluminum Electrolytic Capacitors are all 105C and 2000H life time
47uF 50V φ8*11
1000uF 10V φ13*21
