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MiniMELF (SOD-80, DO-213AA) Component Package

Authors:
Geoffrey Hunter
Geoffrey Hunter
Published On:
Apr 6, 2015
Last Updated:
Mar 7, 2022

MiniMELF is a cylindrical, 2-lead SMD component package whose most common use is for packaging diodes and resistors. This package often comes under the alternative names SOD-80 or DO-213AA. I prefer to call it MiniMELF as it’s to remember when there are a plethora of other packages under the “SOD” or “DO-” naming convention.

A photo of the Mini-MELF (SOD-80, DO-213AA) component package.

MiniMELF (and all the other packages in the MELF family) are cylindrical shaped components. This makes them somewhat infamous because they have a tendency to roll around when soldering. This leads to the backronym “MELF: Most End up Lying on the Floor” or being called the “roll away” package. However, they remain popular because offer significant advantages over traditional SMD packages including:

  • High accuracy
  • Moisture resistance
  • High-temperature operation

Synonyms:

  • 100H01: IEC package outline code1.
  • DO-213AA
  • LL-34: Littelfuse2.
  • LL34: Microsemi3.
  • LLDS (Nexperia1)
  • SOD-80 (Small-outline Diode 80)
  • SOD-80C (Nexperia1)

Pitch: 3.2mm (distance between terminal centers)

Solderability: Easy to solder by hand, but doesn’t stay in one place! Can also be wave or reflow soldered.

Similar To:

Package Dimensions: 3.5mm length, 1.5mm diameter

Image from http://www.topline.tv/drawings/images/MELF_Diodes/SOD80.gif.

Common Uses

  • Diodes
  • Resistors

References

Footnotes

  1. Nexperia (2017, Jan 30). SOD80C: Glass, hermetically sealed glass surface-mounted package; 2 connectors; 3.5 mm x 1.5 mm body (package information). Retrieved 2022-03-04, from https://assets.nexperia.com/documents/package-information/SOD80C.pdf. ↩ ↩2 ↩3

  2. Littelfuse (2018, Feb 26). Surface Mount Thermistors: MELF Style Thermistor: LL 34 MiniMELF SM. Retrieved 2022-03-07, from https://www.littelfuse.com/~/media/electronics/datasheets/surface_mount_thermistors/littelfuse_surface_mount_thermistors_melf_style_thermistors_ll_34_minimelf_sm_datasheet.pdf.pdf. ↩

  3. Microsemi. BZV55 C2V4 thru BZV55 C75 [datasheet]. Retrieved 2024-04-16, from https://nz.mouser.com/datasheet/2/268/BZV55_C2V4_C75-1593780.pdf. ↩