Diodes Incorporated — Analog and discrete power solutions
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FZT491AQ

NPN, 40V, 1A, SOT223

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Application(s)

• Power MOSFET gate driving
• Low loss power switching

Specifications & Technical Documents

Product Parameters

RCE(sat) (mΩ)

-

Compliance (Only Automotive Supports PPAP)

Automotive

Category

Medium Power Transistor

Polarity

NPN

VCEO, VCES (V)

40

IC (A)

1

ICM (A)

2

PD (W)

2

hFE (Min)

300

hFE (@ IC) (A)

0.5

hFE(Min 2)

200

hFE (@ IC2) (A)

1

VCE(sat) Max (mV)

300

VCE(SAT) (@ IC/IB) (A/mA)

0.5/50

VCE(sat) (Max.2) (mV)

500

VCE(sat) (@ IC/IB2) (A/mA)

1/100

fT (MHz)

150

Related Content

Packages

Technical Documents

SPICE Model

Recommended Soldering Techniques

TN1.pdf

RoHS CofC

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-2738 2025-07-11 2025-10-10 Qualification of New Deflashing and Tin Plating Line
PCN-2639 2023-09-26 2023-12-26 Qualification of Internal "Diodes Technology (Cheng Du) Company Limited" (CAT) as Additional Assembly & Test Site Using PdCu Bond Wire with Standardization of Assembly Bill of Materials at CAT for Select Automotive Products