Alternatives to Diodes Incorporated SMBJ48A
Diodes Incorporated SMBJ48A and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
| SMBJ48ADiodes Incorporated |  SMBJ48ALittelfuse Inc. | SMBJ48ATaiwan Semiconductor Corporation | +3more | |
|---|---|---|---|---|
| FFF Compatibility | Both devices use the standard DO-214AA (SMB) footprint with an identical 2-pin pinout where Pin 1 is the Cathode (marked by a polarity band) and Pin 2 is the Anode.Both parts share the exact same package dimensions, height, and surface-mount style (DO-214AA / SMB).The electrical specifications match perfectly, including a 48V reverse standoff voltage, 53.3V minimum breakdown voltage, and 77.4V clamping voltage, with a slightly improved peak pulse current of 7.8A (vs. 7.7A). | Both devices use the standard DO-214AA (SMB) footprint with an identical 2-pin pinout where Pin 1 is the Cathode (marked by a polarity band) and Pin 2 is the Anode.Both parts share the exact same package dimensions, height, and surface-mount style (DO-214AA / SMB).The electrical specifications match perfectly, including a 48V reverse standoff voltage, 53.3V minimum breakdown voltage, 77.4V clamping voltage, and a slightly improved peak pulse current of 7.8A (vs. 7.7A). | ||
 AI Summary | SMBJ48A by Diodes Incorporated: ESD Protection Diodes / TVS Diodes. | This is a premier direct replacement from Littelfuse, sharing the identical industry-standard part number and performance characteristics. It provides a highly stable, active lifecycle alternative to the obsolete Diodes Incorporated part.
| This is a fully compatible direct replacement from Taiwan Semiconductor. It features identical reverse standoff and breakdown voltage levels in an active, long-term support lifecycle.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | Unknown | REACH | REACH | |
| RoHS | Unknown | RoHS | RoHS | |
| Description | ESD Protection Diodes / TVS Diodes | 77.4V Clamp 7.8A Ipp Tvs Diode Surface Mount DO-214AA (SMBJ) | 77.4V Clamp 7.8A Ipp Tvs Diode Surface Mount DO-214AA (SMB) | |
| Manufacturer | Diodes Incorporated | Littelfuse Inc. | Taiwan Semiconductor Corporation | |
| Type | ESD Protection Diodes / TVS Diodes | Transient Voltage Suppressors (TVS) | Transient Voltage Suppressors (TVS) | |
| Datasheet | Open | Open | Open | |
| Lead Time | Unknown | 11 weeks | 19 weeks | |
| Country of Origin | - | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | - | - | - | |
| Moisture Sensitivity Level | - | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
| SMBJ18ADiodes Incorporated | Discontinued | Obsolete | 3Alternatives availableSee Alternatives |
| SMBJ24ADiodes Incorporated | Discontinued | Obsolete | 7Alternatives availableSee Alternatives |
| SMBJ64ADiodes Incorporated | Discontinued | Obsolete | 6Alternatives availableSee Alternatives |
 SMBJ18AVIITOR SEMICONDUCTOR CO., LTD | In stock | NRND | 5Alternatives availableSee Alternatives |
| SMBJ18CADiodes Incorporated | Discontinued | Obsolete | 7Alternatives availableSee Alternatives |
| SMBJ58CADiodes Incorporated | Discontinued | Obsolete | 6Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Diodes Incorporated SMBJ48A 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 Diodes Incorporated SMBJ48A are the SMBJ48A (Littelfuse Inc.) and the SMBJ48A (Taiwan Semiconductor Corporation), 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 SMBJ48A 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 SMBJ48A (Diodes Incorporated) is a part in the ESD Protection Diodes / TVS Diodes category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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