FZT657TA

TRANS NPN 300V 0.5A SOT223-3

SOT223 package NPN silicon planar medium power transistor, 300V collector-emitter voltage, 0.5A continuous collector current, low saturation voltage.Checked against the datasheet

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Technical parameters

Key specs

TypeNPN

Collector-emitter voltage300 V

Collector current500 mAMax

DC current gain40 ~ 50Typ 50 (at $I_C=10mA，V_{CE}=5V$)，Typ 50 (at $I_C=100mA，V_{CE}=5V$)

Power2 WMax · 2 W (at $T_{amb}=25^{' }C$)

Datasheet-verified parameters

17 items

Parameter	Value and test conditions	Source
Type	NPN
Collector-Emitter Voltage	300 V
Continuous Collector Current	0.5 A
Static Forward Current Transfer Ratio	Min 40, Typ 50 (at $I_C=10mA, V_{CE}=5V$); Min 40, Typ 50 (at $I_C=100mA, V_{CE}=5V$)
Power Dissipation	2 W (at $T_{amb}=25^{' }C$)
Package	SOT223
Operating and Storage Temperature Range	-55 to +150 °C
Collector-Base Voltage	300 V
Emitter-Base Voltage	5 V
Peak Pulse Current	1 A
Collector-Emitter Saturation Voltage	Max 0.5 V (at $I_C=100mA, I_B=10mA$)
Base-Emitter Saturation Voltage	Max 1.0 V (at $I_C=100mA, I_B=10mA$)
Base-Emitter Turn-On Voltage	Max 1.0 V (at $I_C=100mA, V_{CE}=5V$)
Collector Cut-Off Current	Max 0.1 μA (at $V_{CB}=200V$)
Emitter Cut-Off Current	Max 0.1 μA (at $V_{EB}=3V$)
Transition Frequency	Min 30 MHz (at $I_C=10mA, V_{CE}=20V, f=20MHz$)
Output Capacitance	Max 20 pF (at $V_{CB}=20V, f=1MHz$)

All parameters (17)ExpandCollapse

Power
Current - Collector Cutoff (Max)	100nA (ICBO)
Current - Collector (Ic) (Max)	500 mA
Power - Max	2 W
Voltage - Collector Emitter Breakdown (Max)	300 V
AC and DC characteristics
DC Current Gain (hFE) (Min) @ Ic, Vce	50 @ 100mA, 5V
Frequency - Transition	30MHz
Environment and package
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 150°C (TJ)
Package	Tape & Reel (TR) Cut Tape (CT)
Package / Case	TO-261-4, TO-261AA
Supplier Device Package	SOT-223-3
Other
Base Product Number	FZT657
Mfr	Diodes Incorporated
Product Status	Active
Series	-
Transistor Type	NPN
Vce Saturation (Max) @ Ib, Ic	500mV @ 10mA, 100mA

Pinout and package

PackageSOT223

Pin	Name	Function	Source
1		Collector (C)
2		Emitter (E)
3		Base (B)
4		Collector (C)

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DatasheetDatasheet · 101.4 KB · 2026-10-29

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