Alternatives to Littelfuse 1SMC48AT3G
Littelfuse 1SMC48AT3G and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 1SMC48AT3GLittelfuse |  SMCJ48ALittelfuse Inc. | SMCJ48ABourns Inc. | +4more | |
|---|---|---|---|---|
| FFF Compatibility | Both parts share the identical DO-214AB (SMC) land pattern with a 2-pin cathode/anode pinout configuration.The package outline and dimensions strictly conform to the industry-standard DO-214AB (SMC) package.All key electrical characteristics, including reverse standoff voltage, breakdown voltage, clamping voltage, and peak pulse power, are identical. | Has identical DO-214AB footprint and pinout.Conforms strictly to standard DO-214AB (SMC) dimensions.Electrical parameters are a perfect match to the original 1SMC48AT3G specification. | ||
 AI Summary | 1SMC48AT3G by Littelfuse: 77.4V Clamp 19.4A Ipp Tvs Diode Surface Mount SMC. | The SMCJ48A is the direct manufacturer-recommended, active replacement for the obsolete 1SMC48AT3G. It provides identical electrical performance and physical package compatibility.
| Bourns' SMCJ48A is an active second-source equivalent that matches the electrical and mechanical parameters of the original part perfectly. It is a highly reliable drop-in choice for this application.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | 77.4V Clamp 19.4A Ipp Tvs Diode Surface Mount SMC | 77.4V Clamp 19.4A Ipp Tvs Diode Surface Mount DO-214AB (SMCJ) | 77.4V Clamp 19.4A Ipp Tvs Diode Surface Mount DO-214AB (SMC) | |
| Manufacturer | Littelfuse | Littelfuse Inc. | Bourns Inc. | |
| Type | Transient Voltage Suppressors (TVS) | Transient Voltage Suppressors (TVS) | Transient Voltage Suppressors (TVS) | |
| Datasheet | Open | Open | Open | |
| Lead Time | 34 weeks | 34 weeks | 17 weeks | |
| Country of Origin | - | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8541.10.0080 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Type | Zener | - | - | |
| Applications | Communication systems, automotive, numerical controls, process controls, medical equipment, business machines, power supplies | - | - | |
| Mounting Type | Surface Mount | - | - | |
| Package / Case | DO-214AB | - | - | |
| Power - Peak Pulse | 1500.0W | - | - | |
| Power Line Protection | False | - | - | |
| Supplier Device Package | SMC | - | - | |
| Unidirectional Channels | 1.0 | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 1SMB48AT3GLittelfuse | Discontinued | Obsolete | 9Alternatives availableSee Alternatives |
 1SMC18AT3GLittelfuse | Discontinued | Obsolete | 5Alternatives availableSee Alternatives |
 1SMB24AT3GLittelfuse | Discontinued | Obsolete | 8Alternatives availableSee Alternatives |
 1SMC30AT3GLittelfuse | Discontinued | Obsolete | 6Alternatives availableSee Alternatives |
| 1SMC5.0AT3GLittelfuse | Discontinued | Obsolete | 7Alternatives availableSee Alternatives |
 1SMB18CAT3GLittelfuse | Discontinued | Obsolete | 7Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The Littelfuse 1SMC48AT3G 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 1SMC48AT3G are the SMCJ48A (Littelfuse Inc.) and the SMCJ48A (Bourns Inc.), 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 1SMC48AT3G 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 1SMC48AT3G (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.
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