Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details. SOT23

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FMMT459

NPN, 450V, 0.15A, SOT23

Datasheet

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Description

This new high voltage transistor provides users with very efficient performance, combining low VCE(SAT) high Hfe to give extremely low on state losses at 500V operation, making it ideal for use in high efficiency Telecom and protected line switching applications.

Specifications & Technical Documents

Product Parameters

Compliance (Only Automotive Supports PPAP)	Standard
Category	High Voltage Transistor
Polarity	NPN
RCE(sat) (mΩ)	-
VCEO, VCES (V)	450
IC (A)	0.15
ICM (A)	0.5
PD (W)	0.625
hFE (Min)	50
hFE (@ IC) (A)	0.03
h_FE(Min 2)	-
hFE (@ IC2) (A)	-
VCE(sat) Max (mV)	75
V_CE(SAT) (@ IC/IB) (A/mA)	0.02/2
VCE(sat) (Max.2) (mV)	90
VCE(sat) (@ IC/IB2) (A/mA)	0.05/6
fT (MHz)	50

Technical Documents

SPICE Model

FMMT459.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