Alternatives to onsemi FDG6303N
onsemi FDG6303N 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 FDG6303N
 FDG6303Nonsemi | PMGD175XNEXNexperia USA Inc. | DMN3401LDW-7Diodes Incorporated | +2more | |
|---|---|---|---|---|
| FFF Compatibility | The pin configuration (Pin 1: S1, Pin 2: G1, Pin 3: D2, Pin 4: S2, Pin 5: G2, Pin 6: D1) matches the target FDG6303N exactly.Both parts share the identical SC-88 / SOT-363 standard physical dimensions and SMD footprint.Key electrical parameters (voltage, current, and on-resistance) meet or exceed the target's baseline specifications. | Matches the original pinout layout exactly with symmetrical dual N-channel configurations.Housed in the identical SOT-363 package with the same dimensions.Matches or exceeds all original critical ratings including voltage, current, and gate threshold. | ||
 AI Summary | FDG6303N by onsemi: Mosfet Array 25V 500mA 300mW Surface Mount SC-88 (SC-70-6). | This is a highly reliable, active drop-in replacement from Nexperia. It features upgraded voltage and current ratings (30V / 870mA) alongside significantly lower on-resistance, making it a safe and high-performance choice to replace the obsolete FDG6303N.
| An active, highly compatible second-source alternative from Diodes Inc. It offers increased electrical margins with a 30V rating and 800mA continuous current, making it an excellent drop-in option.
| |
| Lifecycle Status | Obsolete | Active | Unknown | |
| Market Availability | In stock | In stock | Unknown | |
| REACH | REACH | REACH | Unknown | |
| RoHS | RoHS | RoHS | Unknown | |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 FDC633Nonsemi | Discontinued | Obsolete | 3Alternatives availableSee Alternatives |
 FDS6630Aonsemi | In stock | Obsolete | 4Alternatives availableSee Alternatives |
 FDV301N_NLonsemi | Discontinued | Obsolete | 5Alternatives availableSee Alternatives |
| FDS3590_NLonsemi | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
| FDN360P_NLonsemi | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
 FDG8850NZonsemi | Non-stock | Obsolete | 4Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The onsemi FDG6303N 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 FDG6303N are the PMGD175XNEX (Nexperia USA Inc.) and the DMN3401LDW-7 (Diodes Incorporated), out of 4 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Yes. The leading alternatives to the FDG6303N are fit-, form- and function-compatible — the same package and pinout with matching key electrical specifications — so they drop in without PCB changes. Always confirm the parameters critical to your design against the alternative's datasheet before committing.
The FDG6303N (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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