Feature(s)

BV_CEO > -40V
Low Saturation Voltage -0.75V max @ I_C = -500mA
200mW Power Dissipation
Complementary NPN Type Available (MMST4401)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. "Green" Device (Note 3)
For automotive applications requiring specific change control (i.e.: parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please refer to the related automotive grade (Q-suffix) part. A listing can be found at https://www.diodes.com/products/automotive/automotiveproducts/
This part is qualified to JEDEC standards (as references in AEC-Q) for High Reliability. https://www.diodes.com/quality/product-definitions/

Specifications & Technical Documents

Product Parameters

Compliance (Only Automotive Supports PPAP)	Standard
Category	Small Signal Transistor
Polarity	PNP
VCEO, VCES (V)	40
IC (A)	0.6
ICM (A)	-
PD (W)	0.2
hFE (Min)	100
hFE (@ IC) (A)	0.15
h_FE(Min 2)	20
hFE (@ IC2) (A)	0.5
VCE(sat) Max (mV)	400
V_CE(SAT) (@ IC/IB) (A/mA)	0.15/15
VCE(sat) (Max.2) (mV)	750
VCE(sat) (@ IC/IB2) (A/mA)	0.5/50
fT (MHz)	200

Technical Documents

SPICE Model

MMST4403.spice.txt

Recommended Soldering Techniques

TN1.pdf

RoHS CofC

RoHSFile

Purchase & Availability

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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-2461	2020-05-08	2021-04-05	Phenitec Wafer Manufacturing Site Change, Additional Wafer Sources, Wafer Diameter Change, Additional Assembly and Test Site

MMST4403