The BZX55B11-TR from Vishay General Semiconductor - Diodes Division is an 11 V ±2% Zener diode rated 500 mW, in a through-hole DO-35 (DO-204AH) package.
The BZX55B11-TAP from Vishay General Semiconductor - Diodes Division is an 11 V ±2% Zener diode rated 500 mW, in a through-hole DO-35 (DO-204AH) package.