MELF Component Package
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Overview
MELF (Metal Electrode Leadless Face) is a 2-lead cylindrically-shaped SMD component package. It is a hermetically sealed glass-based package, which offers components with superb reliability characteristics1. However, they are not very popular because they have a tendency to roll around when soldering. Jokingly they can be referred to as “Most End up Lying on the Floor”.
Synonyms
Similar To
Dimensions
The MELF package is 5.00mm long and 2.50mm in diameter2, as shown in the below diagram:
![The dimensions of the MELF component package from Diodes Incorporated[^diodes-inc-melf].](https://blog.mbedded.ninja/pcb-design/component-packages/melf-component-package/_assets/melf-package-dimensions-diodes-inc.png)
The dimensions of the MELF component package from Diodes Incorporated2.
Recommended Land Pattern
Below is the recommended land pattern for the MELF package from Diodes Inc:
![The recommended land pattern for the MELF component package from Diodes Incorporated[^diodes-inc-melf].](https://blog.mbedded.ninja/pcb-design/component-packages/melf-component-package/_assets/melf-recommended-land-pattern-diodes-inc.png)
The recommended land pattern for the MELF component package from Diodes Incorporated2.
Common Uses
- Resistors
- Diodes
References
Wikipedia (2022, Feb 7). Metal electrode leadless face. Retrieved 2024-04-16, from https://en.wikipedia.org/wiki/Metal_electrode_leadless_face. ↩︎ ↩︎ ↩︎ ↩︎
Diodes Incorporated (2017, Apr 5). MELF - PACKAGE INFORMATION. Retrieved 2024-04-16, from https://www.diodes.com/assets/Package-Files/MELF.pdf. ↩︎ ↩︎ ↩︎
Authors
This work is licensed under a Creative Commons Attribution 4.0 International License .
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