MMBT3904Q
40V NPN SMALL SIGNAL TRANSISTOR IN SOT23
Description
Mechanical Data
This bipolar junction transistor (BJT) is designed to meet the stringent
requirements of automotive applications.
Package: SOT23
Package Material: Molded Plastic, “Green” Molding Compound.
UL Flammability Classification Rating 94V-0
Moisture Sensitivity: Level 1 per J-STD-020
Terminals: Finish – Matte Tin Plated Leads. Solderable per
MIL-STD-202, Method 208
Features
Complementary PNP Type Available (DIODES™ MMBT3906Q)
Ideal for Medium Power Amplification and Switching
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
The DIODES™ MMBT3904Q is suitable for automotive
applications requiring specific change control; this part is
AEC-Q101 qualified, PPAP capable, and manufactured in
IATF16949 certified facilities.
Weight: 0.008 grams (Approximate)
https://www.diodes.com/quality/product-definitions/
C
E
SOT23
B
Top View
Pin-Out
Top View
Device Symbol
Ordering Information (Note 4)
Packing
Product
Package
Marking
Reel Size (inches)
Tape Width (mm)
Qty.
Carrier
Reel
MMBT3904Q-7-F
MMBT3904Q-13-F
SOT23
SOT23
K1N
K1N
7
13
8
8
3,000
10,000
Reel
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and
Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
4. For packaging details, go to our website at https://www.diodes.com/design/support/packaging/diodes-packaging/.
Marking Information
K1N = Product Type Marking Code
YM = Date Code Marking
Y or Y = Year (ex: J = 2022)
M or M = Month (ex: 9 = September)
Date Code Key
Year
2014
……
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
Code
B
……
J
K
L
M
N
O
P
R
S
T
Aug
Sep
Oct
Nov
Dec
Month
Code
Jan
Feb
Mar
Apr
May
Jun
Jul
1
2
3
4
5
6
7
8
9
O
N
D
1 of 7
www.diodes.com
November 2022
© Diodes Incorporated
MMBT3904Q
Document number: DS45242 Rev. 1 - 2