Alternatives to Littelfuse 1SMB58CAT3G
Littelfuse 1SMB58CAT3G and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 1SMB58CAT3GLittelfuse |  SMBJ58CALittelfuse Inc. |  SMBJ58CA-TRSTMicroelectronics | +4more | |
|---|---|---|---|---|
| FFF Compatibility | Both parts utilize the identical DO-214AA (SMB) package footprint and feature symmetrical bidirectional pin assignments.The physical dimensions, package outline, and SMD mounting style are completely identical.Every critical electrical parameter, including the full -65°C to 150°C temperature range, meets or exceeds the original part specifications. | Features the same DO-214AA (SMB) footprint with a bidirectional, non-polar layout.Dimensions and surface-mount package outline are functionally identical to the target.While electrical performance and surge handling are equal or superior, the minimum operating temperature is slightly narrower (-55°C vs -65°C). | ||
 AI Summary | 1SMB58CAT3G by Littelfuse: 93.6V Clamp 6.4A Ipp Tvs Diode Surface Mount SMB. | This is the direct active manufacturer-recommended replacement from the same manufacturer. It provides a perfect drop-in fit with fully identical electrical characteristics and even offers a slightly higher peak pulse current handling capability.
| An active, highly reliable second-source equivalent with excellent surge protection capability. It features a slightly stronger peak pulse current rating of 6.7A, though the minimum operating temperature is rated at -55°C instead of -65°C.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | 93.6V Clamp 6.4A Ipp Tvs Diode Surface Mount SMB | 93.6V Clamp 6.5A Ipp Tvs Diode Surface Mount DO-214AA (SMBJ) | 93.6V Clamp 6.7A Ipp Tvs Diode Surface Mount SMB | |
| Manufacturer | Littelfuse | Littelfuse Inc. | STMicroelectronics | |
| Type | Transient Voltage Suppressors (TVS) | Transient Voltage Suppressors (TVS) | Transient Voltage Suppressors (TVS) | |
| Datasheet | Open | Open | Open | |
| Lead Time | 30 weeks | 12 weeks | 16 weeks | |
| Country of Origin | - | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8541.10.0080 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Type | Zener | - | - | |
| Applications | General Purpose | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Package / Case | DO-214AA, SMB | - | - | |
| Power - Peak Pulse | 600W | - | - | |
| Operating Temperature | -65°C ~ 150°C (TJ) | - | - | |
| Power Line Protection | No | - | - | |
| Bidirectional Channels | 1 | - | - |
Unlock all 6 alternatives
- Find & compare verified second sources
- Spot risk early with real-time part monitoring
- Stay compliant and production-ready
Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 1SMB18CAT3GLittelfuse | Discontinued | Obsolete | 7Alternatives availableSee Alternatives |
 1SMB48AT3GLittelfuse | Discontinued | Obsolete | 9Alternatives availableSee Alternatives |
| 1SMB51AT3GLittelfuse | Discontinued | Obsolete | 6Alternatives availableSee Alternatives |
| 1SMB6.5AT3GLittelfuse | Discontinued | Obsolete | 6Alternatives availableSee Alternatives |
| 1SMB18CAT3onsemi | Discontinued | Obsolete | 7Alternatives availableSee Alternatives |
 1SMB5.0AT3Gonsemi | Discontinued | Obsolete | 6Alternatives availableSee Alternatives |
You searched one part. Parter watches your whole BOM.
All your BOM, at once
Parter maps every line to live stock, lead time, lifecycle and compliance data across the entire market — not part by part.
Hear about problems before they hit production
Allocation, EOL and last-time-buy notices surface the moment they appear, not when your buyer's PO bounces.
Qualified replacements in minutes, not days
Every at-risk line gets form-fit-function matches like the ones above — deltas flagged, evidence attached. Review, push to your BOM, and Parter starts watching the new part too.
Frequently asked questions
Yes. The Littelfuse 1SMB58CAT3G 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 Littelfuse 1SMB58CAT3G are the SMBJ58CA (Littelfuse Inc.) and the SMBJ58CA-TR (STMicroelectronics), 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 1SMB58CAT3G 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 1SMB58CAT3G (Littelfuse) 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.
Schedule a demo
See Parter in action
Discover how Parter can help your hardware team:
- Streamline your hardware operations with AI
- Detect and prevent lifecycle disruptions
- Accelerate product development
- Stay compliant and production-ready