Z5W18 - 18V 5W ZENER NZ$1.46         Z5W22 - 22V 5W ZENER NZ$1.67         Z5W56 - 56V 5W ZENER NZ$1.46         Z6W13 - 13V 6W ZENER NZ$1.52         15.0% Goods and Services tax will be added to your order.