Description

This Bipolar Junction Transistor (BJT) is designed to meet the stringent requirements of automotive applications.

Feature(s)

BV_CEO > 300V
I_C = 200mA High Collector Current
Complementary PNP Type Available: MMSTA92Q
Ideal for Low Power Amplification and Switching
Totally Lead-Free & Fully RoHS Compliant (Note 1 & 2)
Halogen and Antimony Free. "Green" Device (Note 3)
The MMSTA42Q is suitable for automotive applications requiring specific change control; this part 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	High Voltage Transistor
Polarity	NPN
VCEO, VCES (V)	300
IC (A)	0.2
PD (W)	0.2
hFE (Min)	40
hFE (@ IC) (A)	0.01
h_FE(Min 2)	40
hFE (@ IC2) (A)	0.03
VCE(sat) Max (mV)	500
V_CE(SAT) (@ IC/IB) (A/mA)	0.02/2
fT (MHz)	50
Spice Model	MMSTA42.spice.txt

Technical Documents

Recommended Soldering Techniques

TN1.pdf

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

MMSTA42Q