Alternatives to STMicroelectronics BUT30V
STMicroelectronics BUT30V and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 BUT30VSTMicroelectronics | BUT232VSTMicroelectronics | IXFN180N15PIXYS | +1more | |
|---|---|---|---|---|
| FFF Compatibility | Shares the identical ISOTOP (SOT-227) physical footprint, but Pin 4 is internally tied to Emitter, whereas on the original BUT30V Pin 4 was Not Connected (NC).Identical ISOTOP (SOT-227) package dimensions and chassis screw-mounting style.NPN power transistor module with superior electrical ratings in voltage, current, and power dissipation. | Physically mounts on the same footprint. Pin 1 (Emitter) maps to Source, Pin 2 (Base) maps to Gate, Pin 3 (Collector) maps to Drain, and Pin 4 (NC) becomes a redundant Source connection.Housed in the identical SOT-227 / miniBLOC package with equivalent mechanical dimensions.This is an N-Channel MOSFET rather than an NPN BJT. Being voltage-controlled (Gate) instead of current-controlled (Base), the base drive circuitry on the board must be redesigned. | ||
 AI Summary | BUT30V by STMicroelectronics: Bipolar (BJT) Transistor NPN 125 V 100 A 250 W Chassis Mount ISOTOP. | An obsolete but direct BJT sibling from STMicroelectronics that serves as the closest electrical drop-in. It maintains the NPN bipolar junction transistor structure and drive scheme, though it is also discontinued.
| An active and modern N-channel Power MOSFET replacement that matches the mechanical SOT-227 layout. It provides a massive performance upgrade in current and thermal handling, but requires drive-circuit adaptation to convert from current-drive to voltage-drive.
| |
| Lifecycle Status | Obsolete | Unknown | Unknown | |
| Market Availability | Non-stock | Unknown | Unknown | |
| REACH | REACH | Unknown | Unknown | |
| RoHS | RoHS | Unknown | Unknown | |
| Description | Bipolar (BJT) Transistor NPN 125 V 100 A 250 W Chassis Mount ISOTOP | An obsolete but direct BJT sibling from STMicroelectronics that serves as the closest electrical drop-in. It maintains the NPN bipolar junct | An active and modern N-channel Power MOSFET replacement that matches the mechanical SOT-227 layout. It provides a massive performance upgrad | |
| Manufacturer | STMicroelectronics | STMicroelectronics | IXYS | |
| Type | Transistors | Component | Component | |
| Datasheet | Open | N/A | N/A | |
| Lead Time | 99 weeks | Unknown | Unknown | |
| Country of Origin | MA | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8541.29.0055 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Power - Max | 250 W | - | - | |
| Mounting Type | Chassis Mount | - | - | |
| Package / Case | ISOTOP | - | - | |
| Transistor Type | NPN | - | - | |
| Operating Temperature | 150°C (TJ) | - | - | |
| Supplier Device Package | ISOTOP | - | - | |
| Vce Saturation (Max) @ Ib, Ic | 900mV @ 10A, 100A | - | - | |
| Current - Collector (Ic) (Max) | 100 A | - | - |
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Frequently asked questions
Yes. The STMicroelectronics BUT30V 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 BUT30V are the BUT232V (STMicroelectronics) and the IXFN180N15P (IXYS), 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 BUT30V 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 BUT30V (STMicroelectronics) is a part in the Transistors category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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