Alternatives to Diotec Semiconductor MCL4148
Diotec Semiconductor MCL4148 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 Diotec Semiconductor MCL4148
 MCL4148Diotec Semiconductor |  MCL4148-TRVishay General Semiconductor | MCL4448-TRVishay General Semiconductor | +2more | |
|---|---|---|---|---|
| FFF Compatibility | Uses the exact same 2-SMD MicroMELF (SOD-106) cylindrical footprint with identical dimensions and pad layouts.Features the identical hermetic glass cylinder package structure and size (2.2mm x 1.1mm).Matches the critical safety and electrical ratings, including 75V DC reverse voltage and 150mA continuous forward current. | Shares the exact same 2.2mm x 1.1mm MicroMELF cylindrical package and footprint.Matches the hermetic glass cylinder construction perfectly.Meets all primary ratings (75V reverse voltage, 150mA average current) with slightly different forward voltage curves. | ||
 AI Summary | MCL4148 by Diotec Semiconductor: Diode 75 V 150mA Surface Mount MicroMelf. | The Vishay MCL4148-TR serves as an active, direct drop-in replacement in the exact same MicroMELF glass package, offering excellent electrical alignment and high reliability. It maintains the identical 75V reverse voltage and 150mA current capabilities of the obsolete Diotec part.
| This sibling variant from the same active Vishay series is an excellent drop-in option, differing only in its forward voltage testing baseline. It operates reliably under the same footprints and provides a highly compatible electrical performance profile.
| |
| Lifecycle Status | Obsolete | Unknown | Unknown | |
| Market Availability | Discontinued | Unknown | Unknown | |
| REACH | REACH | Unknown | Unknown | |
| RoHS | RoHS | Unknown | Unknown | |
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 MMSD4148onsemi | In stock | Obsolete | 5Alternatives availableSee Alternatives |
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| MC14538BDWonsemi | Discontinued | Obsolete | 5Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Diotec Semiconductor MCL4148 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 Diotec Semiconductor MCL4148 are the MCL4148-TR (Vishay General Semiconductor) and the MCL4448-TR (Vishay General Semiconductor), out of 4 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 MCL4148 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 MCL4148 (Diotec Semiconductor) 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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