IRF840 Vishay, IRF840 Datasheet - Page 6

• Manufacturer Part Number: IRF840
• Description: MOSFET N-CH 500V 8A TO-220AB
• Manufacturer: Vishay
• Type: Power MOSFETr

Specifications of IRF840

• Fet Type: MOSFET N-Channel, Metal Oxide
• Fet Feature: Standard
• Rds On (max) @ Id, Vgs: 850 mOhm @ 4.8A, 10V
• Drain To Source Voltage (vdss): 500V
• Current - Continuous Drain (id) @ 25° C: 8A
• Vgs(th) (max) @ Id: 4V @ 250µA
• Gate Charge (qg) @ Vgs: 63nC @ 10V
• Input Capacitance (ciss) @ Vds: 1300pF @ 25V
• Power - Max: 125W
• Mounting Type: Through Hole
• Package / Case: TO-220-3 (Straight Leads)
• Number Of Elements: 1
• Polarity: N
• Channel Mode: Enhancement
• Drain-source On-res: 0.85Ohm
• Drain-source On-volt: 500V
• Gate-source Voltage (max): ±20V
• Drain Current (max): 8A
• Power Dissipation: 125W
• Output Power (max): Not RequiredW
• Frequency (max): Not RequiredMHz
• Noise Figure: Not RequireddB
• Power Gain: Not RequireddB
• Drain Efficiency: Not Required%
• Operating Temp Range: -55C to 150C
• Operating Temperature Classification: Military
• Mounting: Through Hole
• Pin Count: 3 +Tab
• Package Type: TO-220AB
• Configuration: Single
• Transistor Polarity: N-Channel
• Resistance Drain-source Rds (on): 0.85 Ohms
• Drain-source Breakdown Voltage: 500 V
• Gate-source Breakdown Voltage: +/- 20 V
• Continuous Drain Current: 8 A
• Maximum Operating Temperature: + 150 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 55 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *IRF840; IRF840IR

IRF840A, SiHF840A
Vishay Siliconix
www.vishay.com
6
91065_12c
Fig. 12c - Maximum Avalanche Energy vs. Drain Current
1200
1000
800
600
400
200
0
25
10 V
Fig. 13a - Basic Gate Charge Waveform
V
G
Starting T
50
Q
GS
J
, Junction Temperature (°C)
75
Charge
Q
Q
GD
G
100
Top
Bottom
125
3.6 A
5.1 A
8.0 A
I
D
150
91065_12d
600
580
560
540
520
Fig. 12d - Typical Drain-to-Source Voltage vs.
12 V
0.0
V
Fig. 13b - Gate Charge Test Circuit
GS
Same type as D.U.T.
Current regulator
1.0
0.2 µF
2.0
I
AV
Current sampling resistors
3 mA
50 kΩ
Avalanche Current
, Avalanche Current (A)
0.3 µF
3.0
I
G
4.0
S-81275-Rev. A, 16-Jun-08
Document Number: 91065
D.U.T.
5.0
I
D
6.0
+
-
V
DS
7.0
8.0