Alternatives to onsemi MMSZ4686T1
onsemi MMSZ4686T1 and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 MMSZ4686T1onsemi | MMSZ4686T1Gonsemi | SZMMSZ4686T1Gonsemi | +4more | |
|---|---|---|---|---|
| FFF Compatibility | Uses the exact same SOD-123 footprint and standard diode pinout (Pin 1 Cathode, Pin 2 Anode).Identical SOD-123 package dimensions and package outline.Matches all electrical characteristics including 3.9 V Zener voltage, 500 mW power limit, and 5 µA reverse leakage at 2 V. | Identical SOD-123 landing pattern and standard polarity orientation.Uses the exact same SOD-123 package outline.Maintains the original 3.9 V, 500 mW, 5% electrical specifications with automotive qualification. | ||
 AI Summary | MMSZ4686T1 by onsemi: Zener Diode 3.9 V 500 mW ±5% Surface Mount SOD-123. | This is the official lead-free (RoHS compliant) direct replacement from onsemi. It is actively supported and represents a zero-risk drop-in transition from the obsolete leaded original part.
| This is the automotive-qualified version of the direct Pb-free replacement from onsemi. It offers identical electrical parameters and physical package dimensions with higher grade reliability and testing.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | Zener Diode 3.9 V 500 mW ±5% Surface Mount SOD-123 | Zener Diode 3.9 V 500 mW ±5% Surface Mount SOD-123 | Zener Diode 3.9 V 500 mW ±5% Surface Mount SOD-123 | |
| Manufacturer | onsemi | onsemi | onsemi | |
| Type | Diodes | Diodes | Diodes | |
| Datasheet | Open | Open | Open | |
| Lead Time | Unknown | 44 weeks | 44 weeks | |
| Country of Origin | - | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8541.10.0050 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Tolerance | ±5% | - | - | |
| Power - Max | 500 mW | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Package / Case | SOD-123 | - | - | |
| Operating Temperature | -55°C ~ 150°C | - | - | |
| Supplier Device Package | SOD-123 | - | - | |
| Voltage - Zener (Nom) (Vz) | 3.9 V | - | - | |
| Current - Reverse Leakage @ Vr | 5 µA @ 2 V | - | - |
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Related parts
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|---|---|---|---|
 MMSZ4680T1onsemi | Discontinued | Obsolete | 5Alternatives availableSee Alternatives |
| MMSZ4697T1onsemi | Discontinued | Obsolete | 7Alternatives availableSee Alternatives |
 MMSD4148onsemi | In stock | Obsolete | 5Alternatives availableSee Alternatives |
| MMSZ5226Bonsemi | Discontinued | Obsolete | 5Alternatives availableSee Alternatives |
| MMSZ5242Bonsemi | Non-stock | Obsolete | 3Alternatives availableSee Alternatives |
| MMSZ5245Bonsemi | In stock | Obsolete | 5Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The onsemi MMSZ4686T1 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 MMSZ4686T1 are the MMSZ4686T1G (onsemi) and the SZMMSZ4686T1G (onsemi), out of 6 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 MMSZ4686T1 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 MMSZ4686T1 (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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