What 1AM can be
1AMMMBT3904LNPN transistorSOT-23 · onsemi · 40 V · 200 mA · hFE 100-300
Pins: 1=B 2=E 3=C
On the part, one more character can follow 1AM: 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 1AM, 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
Codes that look similar
Easy to mix up with 1AM when the print is worn or a character is cut off:
Frequently asked questions
What is the pinout of SMD code 1AM?
MMBT3904L (SOT-23): 1=B 2=E 3=C.
Marking codes checked against the makers’ datasheets; each part links to its own.