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1N5819 cross reference — VC1N5819WSB equivalent
Industry part1N5819
Our equivalentVC1N5819WSB
PackageSOD-323
Supply formatTape and reel, SMT-mountable
The 1N5819 is a widely used 1 A-class Schottky barrier rectifier, originally an axial through-hole part. Most current production, however, is surface-mount, and the equivalent we stock for this lookup is the Weforsemi VC1N5819WSB: an SMD Schottky barrier diode in SOD-323, supplied tape-and-reel for SMT placement, with OEM customisation support published on its listing. This page is a cross reference in the purchasing sense — an equivalent replacement matched by function and class — not a claim that the parts are identical or interchangeable without checks.
Because the original part and our equivalent differ in format (axial DO-41 versus SOD-323), this cross reference is aimed at boards being designed or re-laid for SMD, and at buyers whose "1N5819" requirement is functional — a low-forward-drop Schottky in this class — rather than tied to the axial package. Buyers who must have the axial original can route the same enquiry through our sourcing service.
What to verify before treating it as your 1N5819
Four checks decide the substitution. Reverse voltage: the 1N5819 designation corresponds to a specific voltage grade in the 1N5817–1N5819 series, so confirm the equivalent's rated reverse voltage meets your rail with your usual derating. Forward current and surge: compare the average forward current and the non-repetitive surge rating at your actual load, including start-up. Forward voltage: the point of a Schottky is the low VF — compare VF at your operating current, not just at the datasheet's headline current, because that is where the efficiency gain or loss appears. Package and thermals: SOD-323 has a small thermal footprint; confirm the copper area your layout provides against the equivalent's datasheet.
Our team confirms these four points against the VC1N5819WSB datasheet when you send the enquiry — that confirmation, not this page, is the design-in record. A sibling part worth knowing in the same range is the VC5819THX in SOD-523 (published at 350 mA, 150 mW, with low forward voltage drop and guard-ring construction for transient protection), useful where the design brief is small-signal rather than 1 A class.
Why buyers cross from the axial part
The usual drivers are assembly cost and availability: an SMT line pays a premium for a single axial part that needs forming and hand or wave processing, and legacy axial Schottkys are frequent allocation candidates. Moving the position to a stocked SOD-323 equivalent at the next board revision removes both problems. Where the board cannot be revised, keep the original part number on the BOM and let sourcing quote it — both outcomes start from the same enquiry form.
Cross reference — industry part to Weforsemi equivalent
| Industry part | Our equivalent | Package | Published data |
|---|---|---|---|
| 1N5819 (SMD redesign / functional equivalent) | VC1N5819WSB | SOD-323 | SMD Schottky barrier diode; tape-and-reel; OEM customisation supported |
| 1N5819 (small-signal sibling in the range) | VC5819THX | SOD-523 | 350 mA, 150 mW; low forward voltage drop; guard-ring construction for transient protection |
Parameters are quoted from the manufacturer's published product pages. Confirm the full datasheet specification before design-in; ratings are confirmed at quotation.
Questions & answers
Is the VC1N5819WSB identical to the 1N5819?
No — it is the stocked equivalent replacement in SOD-323 for designs moving to surface-mount. Ratings are confirmed against its datasheet at quotation; the axial original remains available through sourcing.
What information should I send for a substitution check?
The original part's full designation, your rail voltage, load current (including surge), and the target footprint. We return the comparison against the equivalent's datasheet.
Is it supplied on tape and reel?
Yes — the published listing describes SMT-mountable tape-and-reel packaging, suitable for standard pick-and-place lines.
See also: Schottky diodes · SMD diodes · 1N4148 cross reference