Static power control has always been a challenge for engineers in portable electronics design. Especially in applications such as power banks and all-in-one power banks, even if the main control IC goes to sleep, Capacitor leakage current still continues to consume battery energy, resulting in the phenomenon of “no load power consumption”, which seriously affects the battery life and user satisfaction of terminal products.

- Root Cause Technical Analysis -

The essence of leakage current is the tiny conductive behavior of capacitive media under the action of an electric field. Its size is affected by many factors such as electrolyte composition, electrode interface state, and packaging process. Traditional liquid electrolytic capacitors are prone to performance degradation after alternating high and low temperatures or reflow soldering, and the leakage current rises. Although solid-state capacitors have advantages, if the process is not sophisticated, it is still difficult to break through the μA level threshold.

- YMIN Solution and Process Advantages -

YMIN adopts the dual-track process of “special electrolyte + precision formation”

Electrolyte formulation: using high-stability organic semiconductor materials to inhibit carrier migration;

Electrode structure: multi-layer stacking design to increase the effective area and reduce the unit electric field strength;

Formation process: Through voltage step-by-step empowerment, a dense oxide layer is formed to improve the withstand voltage and leakage resistance. In addition, the product still maintains leakage current stability after reflow soldering, solving the problem of consistency in mass production.

- Data Verification & Reliability Description -

The following is the leakage current data of the 270μF 25V specification before and after reflow solderingContrast (leakage current unit: μA):

Pre-reflow test data

Post-reflow test data

- Application Scenarios and Recommended Models -

All models are stable after reflow soldering and are suitable for automated SMT production lines.