Z5W18 - 18V 5W ZENER NZ$2.10         Z5W22 - 22V 5W ZENER NZ$2.40         Z5W56 - 56V 5W ZENER NZ$2.10         Z6W13 - 13V 6W ZENER NZ$2.18         15.0% Goods and Services tax will be added to your order.