1N4148WT Diode Specifications and Suppliers

ElecSuppliers Part Number GuideAug 15, 2026

1N4148WT is a small signal switching diode used in electronic circuits for fast signal switching. The part belongs to the widely used 1N4148 diode family and is commonly considered when a compact switching component is needed for a PCB design.

For buyers searching for this exact component, 1N4148WT is more useful than simply searching for “1N4148 diode” because the complete part number identifies a specific ordering version.

1N4148WT Specifications

The 1N4148WT is designed for switching applications rather than high-current rectification. Important parameters to check when selecting the part include reverse voltage, forward current, forward voltage, reverse leakage and switching characteristics.

The package is also important when using 1N4148WT as a replacement. A component with similar electrical characteristics may still be unsuitable if its package or pin configuration does not match the original PCB design.

1N4148WT Applications

1N4148WT can be used in signal switching circuits, digital circuits, pulse circuits, logic applications and other low-power electronic designs.

It can also be suitable for compact PCB assemblies where a small surface mount switching diode is required.

1N4148WT and 1N4148

The 1N4148 designation covers a broad family of switching diode products. Additional characters in a part number can identify a particular ordering version or package.

For this reason, engineers and purchasing teams should not assume that every component carrying the 1N4148 designation has exactly the same specifications.

When 1N4148WT is listed on a BOM, searching for the complete 1N4148WT part number is the better approach.

1N4148WT Suppliers

When sourcing 1N4148WT, buyers should verify the exact manufacturer part number, package, electrical specifications and product status before purchasing.

ElecSuppliers provides electronic component supplier and product information to help buyers find suppliers associated with specific part numbers.

For production sourcing, keeping the complete 1N4148WT part number in the RFQ or BOM can help reduce confusion with other 1N4148 variants.