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SOD-128 Component Package

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Overview

SOD-128 is a package used by a few manufacturers for diodes. I could not find any JEITA (EIAJ) code (e.g. SC-xxx) for this package. ST Microelectronics calls this package the SOD-128 FLAT (presumably because it has flat leads, as opposed to many SOD packages which by default have gull-wing leads, and only offer flat variants once you add a F suffix)1. There does not appear to be any difference between the ST Microelectronics SOD-128 FLAT package and the SOD-128 as labelled by Rohm and Nexperia.

Synonyms

  • CFP5 (Nexperia)2
  • PMDTM (Rohm Semiconductor)3
  • SOD-128-2 (Mouser)4
  • SOD-128 FLAT (ST Microelectronics)1

Thermal Resistance

  • \(R_{JA} = 200^{\circ}{\rm C}/W\) (standard land pattern, see below)
  • \(R_{JA} = 120^{\circ}{\rm C}/W\) (mounting pad for cathode 1cm²)
  • \(R_{JA} = 60^{\circ}{\rm C}/W\) (mounted on ceramic PCB with standard footprint)

3D Render

A 3D render of the SOD-128 component package.

A 3D render of the SOD-128 component package.

Dimensions

The main dimensions of the SOD-128 package are:

  • Length (incl. leads, avg.): 4.70mm3
  • Width (avg.): 2.50mm3
  • Height (avg.): 0.95mm3

The below diagram shows these dimensions:

The package outline for the SOD-128 component package.

The package outline for the SOD-128 component package.

The recommended land pattern for the SOD-128 component package.

The recommended land pattern for the SOD-128 component package.

The land area is \(21.1mm^2\) (6.2x3.4mm)2.

Common Uses

  • General purpose diodes
  • TVS diodes

References

  1. ST Microelectronics (2020, Jan). SM6FxxAY: Automotive 600 W TVS in SOD128 Flat (datasheet). Retrieved 2022-03-28, from https://www.st.com/resource/en/datasheet/sm6f11ay.pdf. ↩︎ ↩︎

  2. Nexperia. SOD128: plastic, surface mounted package; 2 terminals; 4 mm pitch; 3.8 mm x 2.6 mm x 1 mm body (package information). Retrieved 2022-03-28, from https://assets.nexperia.com/documents/package-information/SOD128.pdf. ↩︎ ↩︎

  3. Rohm Semiconductor (2019, May 28). RBR5LAM30B: Schottky Barrier Diode (datasheet). Retrieved 2022-03-28, from https://fscdn.rohm.com/en/products/databook/datasheet/discrete/diode/schottky_barrier/rbr5lam30btr-e.pdf. ↩︎ ↩︎ ↩︎ ↩︎

  4. Mouser. ROHM Semiconductor RB088LAM-30TR (product page). Retrieved 2022-03-28, from https://www.mouser.com/ProductDetail/ROHM-Semiconductor/RB088LAM-30TR?qs=F5EMLAvA7IAOGmDi0yYqWA%3D%3D. ↩︎

Authors

Geoffrey Hunter

Dude making stuff.

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License .

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