FMMT549 / FMMT549A
Document Number: DS33098 Rev. 4 - 2 1 of 5
www.diodes.com September 2011
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FMMT549 / FMMT549A
30V PNP SILICON PLANAR HIGH VOLTAGE TRANSISTOR IN SOT23
Features and Benefits
• BVCEO > -30V
• Maximum Continuous Collector Current IC = -1A
• 500mW power dissipation
• Complementary type:
o FMMT549 – FMMT449
o FMMT549A – N/A
• Lead Free, RoHS Compliant (Note 1)
• Halogen and Antimony Free "Green" Device (Note 2)
• Qualified to AEC-Q101 Standards for High Reliability
Mechanical Data
• Case: SOT23
• UL Flammability Rating 94V-0
• Case material: molded Plastic.
• Moisture Sensitivity: Level 1 per J-STD-020
• Terminals: Matte Tin Finish; Solderable per MIL-STD-202,
Method 208
• Weight: 0.008 grams (Approximate)
Ordering Information (Note 3)
Product Marking Reel size (inches) Tape width (mm) Quantity per reel
FMMT549TA 549 7 8 3,000
FMMT549ATA 59A 7 8 3,000
Notes: 1. No purposefully added lead.
2. Diodes Inc.`s “Green” Policy can be found on our website at http://www.diodes.com
3. For Packaging Details, go to our website at http://www.diodes.com.
Marking Information
xxx = Product Type Marking Code
FMMT549: xxx = 549
FMMT549A: xxx = 59A
C
E
B
Top View
SOT23
Device Symbol Top View
Pin-Out
xxx
FMMT549 / FMMT549A
Document Number: DS33098 Rev. 4 - 2 2 of 5
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FMMT549 / FMMT549A
Maximum Ratings @TA = 25°C unless otherwise specified
Characteristic Symbol Value Unit
Collector-Base Voltage VCBO -35 V
Collector-Emitter Voltage VCEO -30 V
Emitter-Base Voltage VEBO -5 V
Continuous Collector Current IC -1 A
Peak Pulse Current ICM -2 A
Base Current IB -200 mA
Thermal Characteristics @TA = 25°C unless otherwise specified
Characteristic Symbol Value Unit
Power Dissipation (Note 4) PD 500 mW
Thermal Resistance, Junction to Ambient (Note 4) RθJA 250 °C/W
Thermal Resistance, Junction to Lead (Note 5) RθJL 197 °C/W
Operating and Storage Temperature Range TJ, TSTG -55 to +150 °C
Electrical Characteristics @TA = 25°C unless otherwise specified
Characteristic Symbol Min Typ Max Unit Test Condition
Collector-Base Breakdown Voltage BVCBO -35 - - V
IC = -100µA
Collector-Emitter Breakdown Voltage (Note 6) BVCEO -30 - - V
IC = -10mA
Emitter-Base Breakdown Voltage BVEBO -5 - - V
IE = -100µA
Collector Cutoff Current ICBO - - -0.1 µA VCB = -30V
- - -10 VCB = -30V, TA = 100°C
Emitter Cutoff Current IEBO - - -0.1 µA
VEB = -4V
Static Forward Current Transfer Ratio (Note 6) hFE
70 200 - - IC = -50mA, VCE = -2V
80 130 - IC = -1A, VCE = -2V
40 80 - IC = -2A, VCE = -2V
FMMT549 100 160 300 -
IC = -500mA, VCE = -2V
FMMT549A 150 200 500 -
IC = -500mA, VCE = -2V
Collector-Emitter Saturation Voltage VCE(sat) - -250 -500
mV IC = - 1A, IB = -100mA
- -500 -750 IC = - 2A, IB = -200mA
FMMT549A - -
-300 mV IC = -100mA, IB = -1mA
Base-Emitter Saturation Voltage (Note 6) VBE
(
sat
)
- -900 -1250 mV
IC = -1A, IB= -100mA
Base-Emitter Turn-On Voltage (Note 6) VBE
(
on
)
- -850 -1000 mV
IC = -1A, VCE = -2V
Output Capacitance Cobo - - 25 pF
VCB = -10V, f = 1MHz
Transition Frequency fT 100 - - MHz
VCE = -5V, IC = -100mA,
f = 100MHz
Switching Times ton - 50 - ns
IC = -500mA, VCC = -10V
IB1 = IB2 = -50mA
toff - 300 - ns
Notes: 4. For a device surface mounted FR4 PCB with minimum recommended pad layout; high coverage of single sided 1 oz copper, in still air conditions; the
device is measured when operating in a steady-state condition.
5. Thermal resistance from junctio n to solder-point (at the end of the collector lead).
6.
Measured under pulsed conditions. Pulse width ≤ 300 µs. Duty cycle ≤ 2%
FMMT549 / FMMT549A
Document Number: DS33098 Rev. 4 - 2 4 of 5
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FMMT549 / FMMT549A
Package Outline Dimensions
Suggested Pad Layout
SOT23
Dim Min Max Typ
A 0.37 0.51 0.40
B 1.20 1.40 1.30
C 2.30 2.50 2.40
D 0.89 1.03 0.915
F 0.45 0.60 0.535
G 1.78 2.05 1.83
H 2.80 3.00 2.90
J 0.013 0.10 0.05
K 0.903 1.10 1.00
K1 - - 0.400
L 0.45 0.61 0.55
M 0.085 0.18 0.11
α 0° 8° -
All Dimensions in mm
Dimensions Value (in mm)
Z 2.9
X 0.8
Y 0.9
C 2.0
E 1.35
A
M
JL
D
F
BC
H
K
G
K1
XE
Y
C
Z
FMMT549 / FMMT549A
Document Number: DS33098 Rev. 4 - 2 5 of 5
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FMMT549 / FMMT549A
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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