The WEET THB grades for film capacitor is a safety-approved X2 capacitor designed to withstand a high temperature of 85℃ and high humidity of 85% RH. It must be used in accordance with the principles of circuit matching and safety regulations; otherwise, the following consequences may arise:

1. Incorrect Connection Position (Most Critical)

Connecting the THB grades for film capacitor improperly between the live wire and protective earth (PE) will pose risks of electric leakage and electric shock.

2. Mismatched Voltage Specifications

• Using a capacitor with a voltage rating lower than the circuit’s operating voltage may easily cause a short circuit, blow the fuse, and in extreme cases, even lead to electrolyte leakage from the capacitor casing and ignition of the circuit board.

• Selecting a capacitor with excessively high capacitance will increase circuit power consumption and shorten service life. On the contrary, insufficient capacitance will fail to suppress electromagnetic interference (EMI), resulting in frequent device crashes.

3. Improper Soldering

Excessively high soldering temperature will cause the sealant between the THB grades for film capacitor pins and the main body to crack, thus losing its Dual 85 high temperature and humidity resistance. Mounting the capacitor close to heat-generating components may cause thermal expansion and bulging of the capacitor.

More details: WEET WFCA THB 85 ℃ 85% X2 Metallized Polypropylene Film Capacitor 275V 305V 310VAC

Contact us: Sales@weetcap.com

WEE Technology Published on Jan 23, 2026