What 2X can be
2XMMBT4401LNPN transistorSOT-23 · onsemi · 40 V · 600 mA · hFE 100-300
Pins: 1=B 2=E 3=C
On the part, one more character can follow 2X: a date or factory code. datasheet
Package size
| Package | Also called | Body | Height |
|---|---|---|---|
| SOT-23 | TO-236AB, SOT-23-3 | 2.9 × 1.3 mm | 1 mm |
Nominal body size without the leads.
How to tell them apart
Only one part in our database uses 2X, but other makers can print the same code on different parts: check that the package matches.
Open the SMD identifier →Not sure it is this part? Enter the marking with the shape and size of the body: the identifier checks it against all 340 markings in the database.
Related parts and their markings
| Part | Marking | Type | Package |
|---|---|---|---|
| MMBT4401Q | K2X | NPN transistor | SOT-23 |
Frequently asked questions
What is the pinout of SMD code 2X?
MMBT4401L (SOT-23): 1=B 2=E 3=C.
Marking codes checked against the makers’ datasheets; each part links to its own.