5.1V Zener Diodes and Multi-Voltage Kits
Looking for a nominal 5 V-class Zener? This collection includes 5.1 V Zener selections as well as variable-voltage menus and assorted kits whose titles mention 5 V. For an exact part, select the 5V1 variant: that code denotes a nominal 5.1 V reverse-breakdown grade, specified at a particular test current, not an exact 5.0 V output under every condition. Many products here offer 3 V through higher voltage choices instead, so a product title alone cannot identify what will ship.
Find the right 5V1 option
- Through-hole: 1N4733A 5V1 is offered among 1N47xxA axial selections and 1 W-labelled DO-41 kits. BZX55C5V1 is available in a 0.5 W-class DO-35 axial listing. A larger 1N5338B 5.1 V option appears in a CASE17/5 W-labelled family menu. These families differ in body size, test current, power and thermal limits; confirm the chosen manufacturer's datasheet.
- Surface mount: MMSZ5V1T1G is offered as a SOD-123 5.1 V choice. BZX84C5V1 appears in SOT-23 menus, ZMM/BZV55C 5V1 and LL34 kits use cylindrical SMD forms, ZM4733A 5V1 uses LL-41, and 1SMA-series listings use SMA/DO-214AC. SOD-123, SOT-23, LL34, LL-41 and SMA have different land patterns and thermal performance.
- Multi-value kits: DO-35, DO-41, LL34, LL-41, SOD-123 and SOD-323 assortments are offered with varying contents and piece counts. A kit can include 5V1 alongside numerous other breakdown grades; a selected single-voltage pack is not the same as a mixed kit. Some LL34 listings also mention LL4148/1N4148 signal-switching diodes, not Zeners.
- Other voltages on this page: selections include 4V7, 5V6, 6V2, 12V, 18V and many more. For example, 1N5349B is labelled 12 V and cannot be treated as a 5.1 V Zener because it appears in this collection. Listings may call a part DO-35 while advertising 1 W, or put inconsistent voltage numbers in imported specification fields. Resolve such conflicts against the exact device datasheet before ordering.
Engineering and purchasing checklist
- Specify whether the design needs nominal 5.1 V breakdown or a regulated 5.0 V supply. A Zener's voltage is defined at a test current and subject to tolerance, dynamic impedance and temperature; it is not a precision 5.0 V regulator by itself.
- Choose the exact 5V1 model and confirm its breakdown tolerance and test current. Evaluate the current available in the intended shunt circuit across supply and load limits, plus power dissipation and temperature derating. Do not apply a listing-wide wattage to every package or option.
- Match axial lead spacing or PCB footprint, cathode/polarity marking and assembly method. Compare the part's physical and electrical documentation before making a replacement, even if both are marked 5V1.
- Record the selected model, package, voltage, tolerance, test current, allowed dissipation, temperature range and pack contents on the bill of materials. A seller's “original” claim or generic protection wording does not verify provenance, surge ratings or safety certification.
Frequently asked questions
Are 5 V and 5V1 the same specification?
No. 5V1 normally designates a nominal 5.1 V breakdown grade at a defined test current. If your circuit requires a precise 5.0 V rail, select and validate a suitable regulator instead.
Can BZX55C5V1 replace 1N4733A?
Not on voltage alone. Compare their test current, voltage tolerance, maximum dissipation and derating, body size and lead geometry using the chosen manufacturer's datasheets.
Is a 5.1 V Zener automatically a transient suppressor?
No. For a surge-protection requirement use a part with verified transient ratings, including its standoff, clamping voltage and specified surge waveform. A Zener's continuous power label is not a surge rating.
Does every item in a 5 V collection ship as 5.1 V?
No. This page contains other-voltage selections and multi-value kits. Read the selected variant and the exact kit contents before checkout.
