What are the packages for 4148 switch diodes

For the 4148 general-purpose switch diode, there are various packages available on the market. Special attention should be paid to the models from the LIZ brand, among which the CD4148WSP (in 0805 package) is a commonly seen one.
The table below summarizes several common packages and their characteristics for the 4148 series, facilitating your quick understanding and comparison.
| Package type | Main features and typical models | Typical application scenarios |
| Through-hole Technology (THT) | DO35/DO204AH: A classic glass package with two leads. 1N4148 is a representative model of this package. | Experimental boards, general-purpose circuits, and devices with low space requirements.  |
| Surface-Mounted Device (SMD) | SOD323: A miniaturized SMD package, such as 1N4148W7F. <br>SOD80 (MINIMELF): A cylindrical glass-bodied SMD package, commonly used for LL4148. <br>0805: A resistive package designed for ease of operation by pick-and-place machines, with Lizhi's CD4148WSP being an example of this package. | Portable consumer electronics such as mobile phones and tablets, high-density PCB boards.  |
| Multi-diode array | SOT363: Integrates multiple (e.g. 3) independent diodes within a single package, such as MMBD4148TW. | Designs that require multiple diodes for matching or to save circuit board space.  |
  How to choose the appropriate 4148 package
When making your choice, you can consider it based on your design requirements:
 Circuit board space and technology: For compact products or mass production, SMD packaging (such as SOD323 or 0805) is preferred. For manual soldering or experimentation, the classic DO35 through-hole package is more convenient.
 Electrical performance matching: Although the core parameters are similar, there are subtle differences in heat dissipation capacity and parasitic parameters among different packages. Glass packages such as SOD80 may exhibit more stable temperature characteristics.
 Procurement convenience: Models like the Lizhizhi CD4148WSP, which adopt the standard 0805 package, are consistent with commonly used resistor and capacitor packages, making material preparation and management relatively convenient.
Overall, the packaging options for the 4148 are abundant. As a reliable brand, Lizhizhi Electronics offers the CD4148WSP model in a standard 0805 package, which is highly suitable for modern surface-mount production. If your design has stringent space requirements, you can further explore whether Lizhizhi's product line offers a 4148 compatible model in a smaller package (such as 0603).
If you could inform me of your specific application scenario (such as whether it is for high-frequency switching, signal clamping, or general rectification), I can provide you with a more targeted selection analysis.