Alternatives to onsemi BSS84LT1
onsemi BSS84LT1 and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
Equivalent and substitute parts for onsemi BSS84LT1
 BSS84LT1onsemi |  BSS84LT1Gonsemi |  BSS84onsemi | +3more | |
|---|---|---|---|---|
| FFF Compatibility | Both share the SOT-23 package and standard Pinout Style 21 (Pin 1: Gate, Pin 2: Source, Pin 3: Drain).Both use the exact same SOT-23 physical footprint and package dimensions.All critical specs meet or exceed original parameters: VDS is -50V, ID is -130mA, and RDS(on) is 10 Ohms max. | Standard SOT-23 package with identical Pin 1: Gate, Pin 2: Source, Pin 3: Drain pin configuration.Maintains the exact same physical dimensions and mounting style as the original part.Electrical ratings are completely identical (-50V VDS, -130mA ID, 10 Ohms max RDS(on)). | ||
 AI Summary | BSS84LT1 by onsemi: P-Channel 50 V 130mA (Ta) Surface Mount SOT-23-3 (TO-236). | This is the direct, lead-free (RoHS compliant) drop-in replacement from the original manufacturer (onsemi). It features identical electrical characteristics and the exact same physical package, making it the highest confidence replacement.
| This is onsemi's standard active BSS84 catalog part, offering a seamless drop-in alternative with the exact same silicon performance. This is a highly stable and long-lived product family.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
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| —— ————— | ———— —————— | —— ————— ——— | ——————— ———— |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 BSS138LT1onsemi | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
| BSS84_NLonsemi | Discontinued | Obsolete | 8Alternatives availableSee Alternatives |
 BSS84Diodes Incorporated | Non-stock | Active | 6Alternatives availableSee Alternatives |
 BC817-40LT1Gonsemi | In stock | Active | 4Alternatives availableSee Alternatives |
 BSS138_NLonsemi | Discontinued | Obsolete | 5Alternatives availableSee Alternatives |
| BAT54LT1onsemi | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The onsemi BSS84LT1 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 BSS84LT1 are the BSS84LT1G (onsemi) and the BSS84 (onsemi), out of 5 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 BSS84LT1 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 BSS84LT1 (onsemi) 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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