What Is the 1N4732A? 4.7V 1W Zener Diode and Uses
The 1N4732A is a 4.7 V, 1 W Zener diode. It is a member of the 1N47xx (1 W Zener) series, used for voltage reference, low-power regulation and clamping/protection. It connects in reverse (cathode to positive) and always needs a series resistor. In the series each Vz has a different number: 1N4732A=4.7V, 1N4733A=5.1V. The 'A' suffix marks a tighter tolerance.
The 1N4732A is a 4.7 V, 1 W Zener diode. It is a member of the 1N47xx series (the 1 W Zener family), used for voltage reference and regulation. For the concept, see what is a Zener diode.
What is the 1N4732A used for?
A fixed voltage reference, low-power voltage regulation, voltage clamping/protection and level shifting. A Zener diode conducts in reverse at its breakdown voltage, holding a fixed (~4.7 V) voltage across its terminals.
Specifications
| Parameter | Value |
|---|---|
| Type | Zener diode |
| Zener voltage (Vz) | 4.7 V |
| Power | 1 W |
| Series | 1N47xx (1 W Zener family) |
Watch out
A Zener is connected in reverse (cathode to positive); the correct direction is critical. A current-limiting series resistor is a must, otherwise the power limit is exceeded and the diode burns out. In the 1N47xx series each Vz comes as a different part number: 1N4732A=4.7V, 1N4733A=5.1V, 1N4742A=12V, etc. The "A" suffix indicates a tighter tolerance.
Equivalents
- 1N4733A: same series, 5.1 V.
- BZX55C4V7: a 0.5 W 4.7 V Zener.
- TL431: an adjustable precision shunt reference (more stable).
Find it in our catalog
Use the 1N4732A search.