Alternatives to onsemi 1N5908
onsemi 1N5908 and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 1N5908onsemi |  SMCJ5.0A-TRSTMicroelectronics |  1.5KE6.8ALittelfuse Inc. | +1more | |
|---|---|---|---|---|
| FFF Compatibility | This is a surface-mount device in a DO-214AB (SMC) package, which is physically incompatible with the original through-hole axial DO-201AD footprint and requires a PCB redesign.Surface-mount package (DO-214AB/SMC) instead of through-hole axial leaded package.Matches or exceeds key electrical parameters including 1500W power rating, 5.0V reverse standoff voltage, and similar clamping behavior. | Uses a standard through-hole DO-201 / DO-27 axial package that fits directly into the existing 1N5908 board layout.Identical through-hole axial-leaded configuration and mounting style.The reverse standoff voltage is slightly higher at 5.8V (vs 5.0V) and the clamping voltage is higher at 10.5V (vs 8.5V), which may offer less tight protection for extremely sensitive 5V lines. | ||
 AI Summary | 1N5908 by onsemi: 8.5V Clamp 120A (8/20µs) Ipp Tvs Diode Through Hole CB429. | This is the manufacturer's officially recommended surface-mount replacement. While it requires a transition from through-hole to SMD, it matches the electrical protection profile of the original 1N5908 perfectly.
| This is the closest active through-hole equivalent in the standard 1.5KE series. It mounts directly into the same DO-201 footprint, though it has slightly higher voltage thresholds.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | In stock | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | 8.5V Clamp 120A (8/20µs) Ipp Tvs Diode Through Hole CB429 | 13.4V Clamp 746A (8/20µs) Ipp Tvs Diode Surface Mount SMC | 10.5V Clamp 144.8A Ipp Tvs Diode Through Hole DO-201 | |
| Manufacturer | onsemi | STMicroelectronics | Littelfuse Inc. | |
| Type | Transient Voltage Suppressors (TVS) | Transient Voltage Suppressors (TVS) | Transient Voltage Suppressors (TVS) | |
| Datasheet | Open | Open | Open | |
| Lead Time | 25 weeks | 16 weeks | 14 weeks | |
| Country of Origin | CN | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8541.10.0080 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Type | TVS Diode (Transil) | - | - | |
| Grade | Not Automotive Grade | - | - | |
| Applications | Electrostatic discharge (ESD) protection, electrical overstress (EOS) protection, surge protection | - | - | |
| Mounting Type | Through Hole | - | - | |
| Qualification | IEC 61000-4-2 Level 4, IEC 61000-4-5, MIL-STD-883G Method 3015-7 Class 3B, MIL-STD-750 Method 2026 | - | - | |
| Package / Case | DO-201 | - | - | |
| Power - Peak Pulse | 1500 W (10/1000 µs) | - | - | |
| Operating Temperature | -55°C to 175°C | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 1N5908RL4GLittelfuse | Discontinued | Obsolete | 6Alternatives availableSee Alternatives |
 1N5820STMicroelectronics | Discontinued | Obsolete | 6Alternatives availableSee Alternatives |
 1N5240BTRDiodes Incorporated | Non-stock | Obsolete | 3Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The onsemi 1N5908 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 onsemi 1N5908 are the SMCJ5.0A-TR (STMicroelectronics) and the 1.5KE6.8A (Littelfuse Inc.), out of 3 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 1N5908 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 1N5908 (onsemi) 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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