FCX491A
Datasheet Number: DS33055 Rev. 4 - 2 1 of 7
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FCX491A
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40V NPN SILICON PLANAR MEDIUM POWER TRANSISTOR IN SOT89
Features
• V
(BR)CEO > 40V
• High current capability IC = 1A
• Low saturation voltage VCE(sat) < 500mV @ 1A
• Complementary PNP type: FCX591A
• “Lead Free”, RoHS Compliant (Note 1)
Application
• Power MOSFET gate driving
• Low loss power switching
Mechanical Data
• Case: SOT89
• Moisture Sensitivity: Level 1 per J-STD-020
• UL Flammability Rating 94V-0
• Terminals: Matte Tin Finish
• Weight: 0.052 grams (Approximate)
Ordering Information (Note 2)
Product Marking Reel size (inches) Tape width (mm) Quantity per reel
FCX491ATA N2 7 12mm 1000
FCX491A-7 (Note 3) N2 7 12mm 1000
Notes: 1. No purposefully added lead.
2. For packaging details, go to our website at http://www.diodes.com.
3. Halogen and Antimony Free. “Green” devices, Diodes Inc’s “Green” Policy can be found on our website at http://www.diodes.com
Marking Information
Top View
SOT89
Device symbol Pin-out Top
N2
N2 = Product Type Marking Code
FCX491A
Datasheet Number: DS33055 Rev. 4 - 2 2 of 7
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Maximum Ratings @TA = 25°C unless otherwise specified
Characteristic Symbol Value Unit
Collector-Base Voltage VCBO 40 V
Collector-Emitter Voltage VCEO 40 V
Emitter-Base Voltage VEBO 5 V
Continuous Collector Current IC 1 A
Peak Pulse Current ICM 2 A
Thermal Characteristics
Characteristic Symbol Value Unit
Collector Power Dissipation PD1 W
Thermal Resistance, Junction to Ambient Air (Note 4) @ TA = 25°C RθJA 125 °C/W
Operating and Storage Temperature Range TJ,TSTG -65 to +150 °C
Notes: 4. For the device mounted on 15mm x 15mm x 1.6mm FR4 PCB with high coverage of single sided 1oz copper, in still air conditions.
FCX491A
Datasheet Number: DS33055 Rev. 4 - 2 3 of 7
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Thermal Characteristics
0 25 50 75 100 125 150
0.0
0.2
0.4
0.6
0.8
1.0
Derating Curve
Temperature (°C)
Max Power Dissipation (W)
100µ 1m 10m 100m 1 10 100 1k
0
20
40
60
80
100
120
Transient Therm al Imp ed a n ce
D=0.5
D=0.2
D=0.1
Single Pulse
D=0.05
Therm al Resist a nce (°C/ W)
Pulse Width (s )
100µ 1m 10m 100m 1 10 100 1k
1
10
100 Single Pulse. Tamb=25°C
Pulse Power Dissipation
Pu lse Width (s )
Max P ower Di ssipat i on (W)
FCX491A
Datasheet Number: DS33055 Rev. 4 - 2 4 of 7
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Electrical Characteristics @TA = 25°C unless otherwise specified
Characteristic Symbol Min Typ. Max Unit Test Condition
Collector-Base Breakdown Voltage BVCBO 40 - - V
IC = 100µA
Collector-Emitter Breakdown Voltage (Note 5) BVCEO 40 - - V
IC = 10mA
Emitter-Base Breakdown Voltage BVEBO 5 - - V
IE = 100µA
Collector Cutoff Current ICBO - - 100 nA
VCB = 30V
Emitter Cutoff Current IEBO - - 100 nA
VEB = 4V
Emitter Cutoff Current ICES - - 100 nA
VCE = 30V
DC current transfer Static ratio (Note 5) hFE
300
300
200
35
-
-
-
-
-
900
-
-
-
IC = 1mA, VCE = 5V
IC = 500mA, VCE = 5V
IC = 1A, VCE = 5V
IC = 2A, VCE = 5V
Collector-Emitter Saturation Voltage (Note 5) VCE(sat) -
- -
- 0.3
0.5 V IC = 500mA, IB = 50mA
IC = 1A, IB = 100mA
Base-Emitter Saturation Voltage (Note 5) VBE
(
sat
)
- - 1.1 V
IC = 1A, IB = 100mA
Base-Emitter Turn-on Voltage (Note 5) VBE
(
on
)
- - 1.0 V
IC = 1A, VCE = 5V
Transitional Frequency fT 150 - - MHz
IC = 50mA, VCE = 10V
f = 100MHz
Output capacitance Cobo - - 10 pF
VCB = 10V, f = 1MHz,
Notes: 5. Measured under pulsed conditions. Pulse width = 300μs. Duty cycle ≤2%.
FCX491A
Datasheet Number: DS33055 Rev. 4 - 2 6 of 7
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Package Outline Dimensions
Suggested Pad Layout
SOT89
Dim Min Max
A 1.40 1.60
B 0.44 0.62
B1 0.35 0.54
C 0.35 0.43
D 4.40 4.60
D1 1.52 1.83
E 2.29 2.60
e 1.50 Typ
e1 3.00 Typ
H 3.94 4.25
L 0.89 1.20
All Dimensions in mm
Dimensions Value (in mm)
X 0.900
X1 1.733
X2 0.416
Y 1.300
Y1 4.600
Y2 1.475
Y3 0.950
Y4 1.125
C 1.500
e
D
H
L
A
C
E
8° (4X)
B1
B
D1
R0.200
e1
Y1
X1
Y2
Y
C
X (3 x)
Y3 Y4
X2 (2x)
FCX491A
Datasheet Number: DS33055 Rev. 4 - 2 7 of 7
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