The 1N47xx Series 1W Zener Diode is a reliable through-hole voltage regulation component available in four popular breakdown voltage variants — 3V, 3.3V, 4.7V, and 5.1V. Designed for a wide range of general-purpose applications, these diodes are perfect for voltage clamping, reference circuits, overvoltage protection, and signal conditioning.

Housed in the industry-standard DO-41 glass package, each variant offers excellent thermal stability and consistent performance across varying load conditions. With a 1-watt power dissipation rating and tight ±5% voltage tolerance, they are well-suited for both prototyping and production-level designs.

Whether you’re a hobbyist building your first power supply, a student learning circuit fundamentals, or an engineer developing embedded systems, this series provides a dependable and cost-effective solution. Compatible with standard breadboards and PCBs, integration is quick and straightforward. Select your required Zener voltage from the available variants below.