PnP QFN, DFN and LGA packages
Leadless packages with the pads under the body and, usually, a big exposed pad in the middle. They are the parts most often programmed wrong, because the drawing is on page 40, it shows the bottom, and every number has a min, nom and max.
The numbers you program
- Body D × E and height A
- Pitch e
- Lead (pad) width b and length L
- Number of leads N, and per side if the body is not square
- Exposed pad D2 × E2
- Pin 1 corner and which view the drawing is
Mistakes to watch
- Reading a bottom-view drawing as if it were the top view, so pin 1 ends up mirrored
- Typing mils into a millimeter field
- Building a HotRod or flip-chip part as a normal QFN
- Leads so wide for the pitch that they bridge
Each of these has a check in PnP Toolkit. See the test results on the proof page.
Part numbers in the library (12)
| Part number | Maker | Package | Size | MSL | Datasheet |
|---|---|---|---|---|---|
| DFN-8 3×3 0.65 | Generic | SON | 3.00 × 3.00 · 0.65 pitch · 8 pins | – | – |
| DFN-10 3×3 0.5 | Generic | SON | 3.00 × 3.00 · 0.5 pitch · 10 pins | – | – |
| QFN-16 3×3 0.5 | Generic | QFN / DFN / LGA | 3.00 × 3.00 · 0.5 pitch · 16 pins | – | – |
| QFN-20 4×4 0.5 | Generic | QFN / DFN / LGA | 4.00 × 4.00 · 0.5 pitch · 20 pins | – | – |
| QFN-24 4×4 0.5 | Generic | QFN / DFN / LGA | 4.00 × 4.00 · 0.5 pitch · 24 pins | – | – |
| QFN-32 4×4 0.4 | Generic | QFN / DFN / LGA | 4.00 × 4.00 · 0.4 pitch · 32 pins | – | – |
| QFN-28 5×5 0.5 | Generic | QFN / DFN / LGA | 5.00 × 5.00 · 0.5 pitch · 28 pins | – | – |
| QFN-32 5×5 0.5 | Generic | QFN / DFN / LGA | 5.00 × 5.00 · 0.5 pitch · 32 pins | – | – |
| QFN-40 6×6 0.5 | Generic | QFN / DFN / LGA | 6.00 × 6.00 · 0.5 pitch · 40 pins | – | – |
| QFN-48 7×7 0.5 | Generic | QFN / DFN / LGA | 7.00 × 7.00 · 0.5 pitch · 48 pins | – | – |
| QFN-56 8×8 0.5 | Generic | QFN / DFN / LGA | 8.00 × 8.00 · 0.5 pitch · 56 pins | – | – |
| QFN-64 9×9 0.5 | Generic | QFN / DFN / LGA | 9.00 × 9.00 · 0.5 pitch · 64 pins | – | – |
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 QFN / DFN / LGA
FeatureQFN decoderType the numbers from the package drawing exactly as printed, like “0.18 0.25 0.30”. The decoder picks the nominal,…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…FeatureScan and capturePhotograph a reel label, a DigiKey or Mouser page, a setup sheet or a dimension table. The app reads the text on the…
Machine guides
How to set up and program these parts on your machine:
Other part categories
- Power / DC-DC (77)
- Popular ICs (11)
- Chips (8)
- Tantalum / Alu / LED (13)
- Filters & magnetics (5)
- Crystals (10)
- Diodes (7)
- SOT / Power (10)
- SOIC / TSSOP (14)
- QFP (6)
- BGA / FBGA (4)
- Connectors & switches (2)
Try PnP Toolkit free for 30 days
No credit card. Works on any phone or line PC. After the trial it’s $49/month per machine.