Alternatives to STMicroelectronics 1.5KE33A
STMicroelectronics 1.5KE33A and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 1.5KE33ASTMicroelectronics |  1.5KE33ALittelfuse Inc. | 1.5KE33ASTMicroelectronics | +6more | |
|---|---|---|---|---|
| FFF Compatibility | Both parts utilize the industry-standard DO-201/DO-27 axial package with identical anode and cathode terminal assignments.Both parts share the exact physical dimensions and lead spacings of the standard DO-201 package.The electrical parameters are identical, featuring 1500W peak pulse power, 28.2V reverse standoff voltage, 31.4V minimum breakdown voltage, and 45.7V clamping voltage. | Both parts utilize the industry-standard DO-201/DO-27 axial package with identical anode and cathode terminal assignments.Both parts share the exact physical dimensions and lead spacings of the standard DO-201 package.The electrical parameters are identical, featuring 1500W peak pulse power, 28.2V reverse standoff voltage, 31.4V minimum breakdown voltage, and 45.7V clamping voltage. | ||
 AI Summary | 1.5KE33A by STMicroelectronics: 45.7V Clamp 32.8A Ipp Tvs Diode Through Hole DO-201AE. | This is a high-reliability direct drop-in replacement from a tier-one circuit protection manufacturer. It matches every physical and electrical parameter of the original Good-Ark part.
| The STMicroelectronics Transil series offers an exceptionally robust and active alternative, matching the original's physical dimensions and electrical protection ratings exactly.
| |
| Lifecycle Status | Obsolete | Active | Obsolete | |
| Market Availability | In stock | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | 45.7V Clamp 32.8A Ipp Tvs Diode Through Hole DO-201AE | 45.7V Clamp 33.3A Ipp Tvs Diode Through Hole DO-201 | 45.7V Clamp 33A Ipp Tvs Diode Through Hole DO-201 | |
| Manufacturer | STMicroelectronics | Littelfuse Inc. | STMicroelectronics | |
| Type | Transient Voltage Suppressors (TVS) | Transient Voltage Suppressors (TVS) | Transient Voltage Suppressors (TVS) | |
| Datasheet | Open | Open | Open | |
| Lead Time | 16 weeks | 14 weeks | 25 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 | Through Hole | - | - | |
| Package / Case | DO-201AE, Axial | - | - | |
| Power - Peak Pulse | 1500W (1.5kW) | - | - | |
| Operating Temperature | -55°C ~ 175°C (TJ) | - | - | |
| Power Line Protection | No | - | - | |
| Supplier Device Package | DO-201AE | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 1.5KE43Aonsemi | In stock | Obsolete | 7Alternatives availableSee Alternatives |
 1.5KE39ASTMicroelectronics | In stock | Obsolete | 4Alternatives availableSee Alternatives |
| 1.5KE36CASTMicroelectronics | In stock | Obsolete | 6Alternatives availableSee Alternatives |
 1.5KE15Aonsemi | In stock | Obsolete | 4Alternatives availableSee Alternatives |
| 1.5KE62Aonsemi | Discontinued | Obsolete | 8Alternatives availableSee Alternatives |
 1.5KE540ALittelfuse | In stock | Active | 4Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The STMicroelectronics 1.5KE33A 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 STMicroelectronics 1.5KE33A are the 1.5KE33A (Littelfuse Inc.) and the 1.5KE33A (STMicroelectronics), out of 8 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 1.5KE33A 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 1.5KE33A (STMicroelectronics) 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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