Description

40V NPN SMALL SIGNAL TRANSISTOR IN SOT323

Feature(s)

BVCEO > 40V
IC = 200mA Collector Current
Epitaxial Planar Die Construction
Ultra-Small Surface Mount Package
Complementary PNP Type: MMST3906Q
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
The MMST3904Q is suitable for automotive applications requiring specific change control; it is AEC-Q101 qualified,
PPAP capable, and manufactured in IATF 16949 certified facilities.
https://www.diodes.com/quality/product-definitions/

Specifications & Technical Documents

Product Parameters

Compliance (Only Automotive Supports PPAP)	Automotive
Category	Small Signal Transistor
Polarity	NPN
VCEO, VCES (V)	40
IC (A)	0.2
ICM (A)	-
PD (W)	0.2
hFE (Min)	100
hFE (@ IC) (A)	0.01
h_FE(Min 2)	30
hFE (@ IC2) (A)	0.1
VCE(sat) Max (mV)	250
V_CE(SAT) (@ IC/IB) (A/mA)	0.01/1
VCE(sat) (Max.2) (mV)	300
VCE(sat) (@ IC/IB2) (A/mA)	0.05/5
fT (MHz)	300

Technical Documents

SPICE Model

MMST3904Q.spice.txt

Recommended Soldering Techniques

TN1.pdf

RoHS CofC

RoHSFile

Purchase & Availability

Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2770	2025-10-30	2025-10-30	Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products
PCN-2462	2020-05-08	2021-04-11	Phenitec Wafer Manufacturing Site Change, Additional Wafer Sources, Wafer Diameter Change, Additional Assembly and Test Site (Automotive)

MMST3904Q