Alternatives to onsemi MMSZ5226B
onsemi MMSZ5226B and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
Equivalent and substitute parts for onsemi MMSZ5226B
 MMSZ5226Bonsemi |  MMSZ5226BT1Gonsemi |  MMSZ5226B-7-FDiodes Incorporated | +3more | |
|---|---|---|---|---|
| FFF Compatibility | Identical SOD-123 package footprint and style-1 pinout (Pin 1 Cathode, Pin 2 Anode).Exact same package dimensions, footprint, and mounting style.Matches all electrical characteristics including 3.3V nominal voltage, 500mW power rating, and 28 Ohms max impedance. | Identical SOD-123 package footprint and pinout.Exact same package dimensions, footprint, and mounting style.Matches all electrical parameters, providing a seamless functional replacement. | ||
 AI Summary | MMSZ5226B by onsemi: Zener Diode 3.3 V 500 mW ±5% Surface Mount SOD-123. | This is the manufacturer-recommended direct, lead-free active replacement for the obsolete MMSZ5226B, offering identical physical and electrical specifications.
| An excellent second-source alternative that provides an exact functional and physical drop-in equivalent in the same SOD-123 package.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
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| —— ————— | ———— —————— | —— ————— ——— | ——————— ———— |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 MMSZ5242Bonsemi | Non-stock | Obsolete | 3Alternatives availableSee Alternatives |
| MMSZ5245Bonsemi | In stock | Obsolete | 5Alternatives availableSee Alternatives |
| MMSZ5239Bonsemi | In stock | Obsolete | 6Alternatives availableSee Alternatives |
 MMBZ5242Bonsemi | Non-stock | Obsolete | 5Alternatives availableSee Alternatives |
 MMBZ5242BLT1onsemi | Discontinued | Obsolete | 6Alternatives availableSee Alternatives |
 ZMM5245BDiodes Incorporated | Non-stock | Obsolete | 3Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The onsemi MMSZ5226B is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.
The closest qualified second sources for the onsemi MMSZ5226B are the MMSZ5226BT1G (onsemi) and the MMSZ5226B-7-F (Diodes Incorporated), out of 5 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the MMSZ5226B are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The MMSZ5226B (onsemi) is a part in the Diodes category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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