Alternatives to Diodes Incorporated SMBJ18CA
Diodes Incorporated SMBJ18CA and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
| SMBJ18CADiodes Incorporated |  SMBJ18CALittelfuse Inc. | SMBJ18CABourns Inc. | +5more | |
|---|---|---|---|---|
| FFF Compatibility | Both parts share the identical DO-214AA (SMB) footprint with standard 2-pin bidirectional layout.The physical package dimensions are completely identical, adhering to the JEDEC DO-214AA standard.All key electrical parameters (Vrwm=18V, Vbr=20V, Vc=29.2V, Pppm=600W) are identical. | Identical 2-pin bidirectional layout on the standard DO-214AA (SMB) land pattern.Package physical dimensions match JEDEC DO-214AA (SMB) standard exactly.Electrical specifications such as standoff voltage, breakdown voltage, clamping voltage, and peak power match exactly. | ||
 AI Summary | SMBJ18CA by Diodes Incorporated: 29.2V Clamp 20.6A Ipp TVS Diode, DO-214AA (SMB). | This is an industry-standard, high-reliability direct drop-in replacement from Littelfuse. It matches all electrical characteristics, dimensions, and bidirectional capabilities of the original Diodes Inc part.
| Bourns is a highly reputable manufacturer for circuit protection. This part is a direct drop-in substitute offering identical specifications and high availability.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | Unknown | REACH | REACH | |
| RoHS | Unknown | RoHS | RoHS | |
| Description | 29.2V Clamp 20.6A Ipp Tvs Diode Surface Mount DO-214AA (SMB) | 29.2V Clamp 20.6A Ipp Tvs Diode Surface Mount DO-214AA (SMBJ) | 29.2V Clamp 20.6A Ipp Tvs Diode Surface Mount DO-214AA (SMB) | |
| Manufacturer | Diodes Incorporated | Littelfuse Inc. | Bourns Inc. | |
| Type | Transient Voltage Suppressors (TVS) | Transient Voltage Suppressors (TVS) | Transient Voltage Suppressors (TVS) | |
| Datasheet | Open | Open | Open | |
| Lead Time | Unknown | 14 weeks | 33 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 |
 SMBJ51Aonsemi | In stock | Active | 4Alternatives availableSee Alternatives |
| SMAJ58CADiodes Incorporated | Discontinued | Obsolete | 5Alternatives availableSee Alternatives |
 SMCJ12Aonsemi | In stock | Active | 5Alternatives availableSee Alternatives |
 SMCJ48ADiodes Incorporated | In stock | Obsolete | 5Alternatives availableSee Alternatives |
| SMBJ24ADiodes Incorporated | Discontinued | Obsolete | 7Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Diodes Incorporated SMBJ18CA 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 SMBJ18CA are the SMBJ18CA (Littelfuse Inc.) and the SMBJ18CA (Bourns Inc.), out of 7 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 SMBJ18CA 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 SMBJ18CA (Diodes Incorporated) is a part in the Transient Voltage Suppressors (TVS) category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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