IRF644 Vishay, IRF644 Datasheet - Page 7

• Manufacturer Part Number: IRF644
• Description: MOSFET N-CH 250V 14A TO-220AB
• Manufacturer: Vishay

Specifications of IRF644

• Fet Type: MOSFET N-Channel, Metal Oxide
• Fet Feature: Standard
• Rds On (max) @ Id, Vgs: 280 mOhm @ 8.4A, 10V
• Drain To Source Voltage (vdss): 250V
• Current - Continuous Drain (id) @ 25° C: 14A
• Vgs(th) (max) @ Id: 4V @ 250µA
• Gate Charge (qg) @ Vgs: 68nC @ 10V
• Input Capacitance (ciss) @ Vds: 1300pF @ 25V
• Power - Max: 125W
• Mounting Type: Through Hole
• Package / Case: TO-220-3 (Straight Leads)
• Transistor Polarity: N Channel
• Drain Source Voltage Vds: 250V
• Rds(on) Test Voltage Vgs: 10V
• Peak Reflow Compatible (260 C): No
• Drain Source On Resistance @ 10v: 280mohm
• Thermal Resistance: 1°C/W
• Current Rating: 14A
• Configuration: Single
• Resistance Drain-source Rds (on): 0.28 Ohms
• Drain-source Breakdown Voltage: 250 V
• Gate-source Breakdown Voltage: +/- 20 V
• Continuous Drain Current: 14 A
• Power Dissipation: 125 W
• Maximum Operating Temperature: + 150 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 55 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant, Contains lead / RoHS non-compliant
• Other names: *IRF644

Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon
Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and
reliability data, see http://www.vishay.com/ppg?91039.
Document Number: 91039
S-81241-Rev. B, 07-Jul-08
Re-applied
voltage
Reverse
recovery
current
+
-
R
G
D.U.T.
*
Driver gate drive
D.U.T. I
D.U.T. V
Inductor current
V
GS
= 5 V for logic level devices
P.W.
SD
DS
waveform
waveform
Peak Diode Recovery dV/dt Test Circuit
Ripple ≤ 5 %
Body diode forward drop
Period
Body diode forward
+
-
Fig. 14 - For N-Channel
• dV/dt controlled by R
• Driver same type as D.U.T.
• I
• D.U.T. - device under test
SD
Diode recovery
current
controlled by duty factor "D"
Circuit layout considerations
dV/dt
• Low stray inductance
• Ground plane
• Low leakage inductance
current transformer
dI/dt
D =
-
G
Period
P.W.
+
V
V
I
SD
GS
DD
= 10 V*
+
-
V
DD
IRF644, SiHF644
Vishay Siliconix
www.vishay.com
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