Incorrect insertion of polarised capacitors such as aluminum and tantalum radial leaded devices not only destroys the capacitor but can also damage the printed circuit board necessitating costly repair or replacement.
A timeworn but simple and effective solution is a three-leaded capacitor design where the anode is the centre pin, allowing the device to be inserted correctly in either direction.
KEMET and Vishay each still produce a series of triple-pin tantalum capacitors that guarantee fail safe insertion.
Capacitance range is 0.1µF to 680µF and voltage range is 3Vdc to 50Vdc.
Triple-Pin Dipped Tantalum Capacitors
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