Alternatives to onsemi LL4148
onsemi LL4148 and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 LL4148onsemi |  LL4148Vishay General Semiconductor |  LL4148-GS08Vishay General Semiconductor - Diodes Division | +2more | |
|---|---|---|---|---|
| FFF Compatibility | Matches the exact SOD-80/MiniMELF (DO-213AC) package dimensions, pad layout, and anode/cathode polarity markings.Uses the identical hermetically sealed glass surface-mount cylinder package shape and terminal spacing.Matches or exceeds all key electrical characteristics including a fast 4 ns reverse recovery time and a 200 mA average rectified forward current. | Fully compatible physical mounting on the existing SOD-80 / MiniMELF footprint.Hermetically sealed glass SOD-80 body matches the physical profile of the original component.Offers identical 4 ns switching speed while increasing continuous forward current capability to 300 mA. | ||
 AI Summary | LL4148 by onsemi: Diode 75 V 150mA Surface Mount LL-34. | This Vishay diode is a primary industry-standard replacement for the obsolete LL4148, offering identical physical packaging and equivalent or superior electrical specifications. Its 100 V DC reverse voltage rating provides excellent safety margin.
| The Vishay LL4148-GS08 is a premium alternative that offers a higher 300 mA continuous forward current rating in the same SOD-80 package. Ordering suffix '-GS08' denotes standard 2,500-unit tape and reel packaging, while '-GS18' is available for larger 10,000-unit reels.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | In stock | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | Diode 75 V 150mA Surface Mount LL-34 | Diode 100 V 150mA Surface Mount LL-34 (MiniMELF) | Diode 75 V 300mA Surface Mount SOD-80 MiniMELF | |
| Manufacturer | onsemi | Vishay General Semiconductor | Vishay General Semiconductor - Diodes Division | |
| Type | Diodes | Diodes | Diodes | |
| Datasheet | Open | Open | Open | |
| Lead Time | 6 weeks | 9 weeks | 9 weeks | |
| Country of Origin | CN | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8541.10.0070 | - | - | |
| Moisture Sensitivity Level | Not Applicable | - | - | |
| Speed | Small Signal =< 200mA (Io), Any Speed | - | - | |
| Technology | Standard | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Package / Case | DO-213AC, MINI-MELF, SOD-80 | - | - | |
| Capacitance @ Vr, F | 4pF @ 0V, 1MHz | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 1N4148Diodes Incorporated | In stock | Obsolete | 3Alternatives availableSee Alternatives |
 1N4148WSDiodes Incorporated | In stock | Obsolete | 7Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The onsemi LL4148 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 LL4148 are the LL4148 (Vishay General Semiconductor) and the LL4148-GS08 (Vishay General Semiconductor - Diodes Division), out of 4 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Yes. The leading alternatives to the LL4148 are fit-, form- and function-compatible — the same package and pinout with matching key electrical specifications — so they drop in without PCB changes. Always confirm the parameters critical to your design against the alternative's datasheet before committing.
The LL4148 (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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