PnP Diodes: SOD, SMA, SMB and SMC
Two-terminal polarized parts. The cathode band is the thing to get right, and SOD bodies come in several near-identical sizes.
The numbers you program
- Body length and width
- Overall length including leads
- Cathode band end
Mistakes to watch
- Cathode band reversed
- SOD-123 and SOD-123F mixed up
- SMA vs SMB body picked from memory
Each of these has a check in PnP Toolkit. See the test results on the proof page.
Part numbers in the library (7)
| Part number | Maker | Package | Size | MSL | Datasheet |
|---|---|---|---|---|---|
| SOD-523 | Generic | SC-79 | 1.2 × 0.8 body · 1.6 overall | – | – |
| SOD-323 | Generic | SC-76 | 1.7 × 1.25 body · 2.5 overall | – | – |
| SOD-123 | Generic | Diodes | 2.7 × 1.6 body · 3.7 overall | – | – |
| SMA | Generic | DO-214AC | 4.3 × 2.6 body · 5.2 overall | – | – |
| SMB | Generic | DO-214AA | 4.3 × 3.6 body · 5.4 overall | – | – |
| SOD-923 | Generic | Diodes | 0.8 × 0.6 body · 1 overall | – | – |
| SMC | Generic | DO-214AB | 6.9 × 5.9 body · 7.95 overall | – | – |
Missing a part? Decode it from the datasheet in the app and save it to My Parts; it goes to the whole team with the team file.
Tools for Diodes
FeatureParts libraryA built-in library of 179 packages and real part numbers, each with body and lead sizes, tape, MSL level and, for 104…FeatureRotation helperWorks out the turn angle when pin 1 on the tape is not where the CAD data expects it, and adds it to the placement…FeatureJob setup checklistTen checks to tap through before every new job or changeover: program revision, board support, feeder list, imperial vs…
Machine guides
How to set up and program these parts on your machine:
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