PAJIT 15KP18 datasheet, 15KP18 is Glass passivated junction transient voltage suppressor. Vrwm = 18 V. Vbr(min/max) = 20.0/25.3 V @ It = 50 mA. Ir = 5000 uA. Vc = 32.2 V @ Ipp = 439 A.