Si4942DY
Vishay Siliconix
Dual N-Channel 40-V (D-S) MOSFET
PRODUCT SUMMARY
V
DS
(V)
40
R
DS(on)
(Ω)
0.021 at V
GS
= 10 V
0.028 at V
GS
= 4.5 V
I
D
(A)
7.4
6.4
FEATURES
•
Halogen-free According to IEC 61249-2-21
Definition
• TrenchFET
®
Power MOSFET
• Compliant to RoHS Directive 2002/95/EC
APPLICATIONS
• Low Power Synchronous Rectifier
• Automotive 12 V Systems
D
1
D
2
SO-8
S
1
G
1
S
2
G
2
1
2
3
4
Top View
8
7
6
5
D
1
D
1
D
2
D
2
G
1
G
2
Ordering Information:
Si4942DY-T1-E3
(Lead (Pb)-free)
Si4942DY-T1-GE3
(Lead (Pb)-free and Halogen-free)
S
1
N-Channel MOSFET
S
2
N-Channel MOSFET
ABSOLUTE MAXIMUM RATINGS
T
A
= 25 °C, unless otherwise noted
Parameter
Drain-Source Voltage
Gate-Source Voltage
Continuous Drain Current (T
J
= 150 °C)
a
Pulsed Drain Current
Avalanche Current
Continuous Source Current (Diode Conduction)
a
Maximum Power Dissipation
a
Operating Junction and Storage Temperature Range
T
A
= 25 °C
T
A
= 70 °C
L = 0.1 mH
T
A
= 25 °C
T
A
= 70 °C
Symbol
V
DS
V
GS
I
D
I
DM
I
AS
I
S
P
D
T
J
, T
stg
1.8
2.1
1.3
- 55 to 150
7.4
5.8
30
25
0.9
1.1
0.7
W
°C
10 s
40
± 20
5.3
4.3
A
Steady State
Unit
V
THERMAL RESISTANCE RATINGS
Parameter
Maximum Junction-to-Ambient
a
Maximum Junction-to-Foot (Drain)
Notes:
a. Surface Mounted on 1" x 1" FR4 board.
t
≤
10 s
Steady State
Steady State
Symbol
R
thJA
R
thJF
Typical
50
90
28
Maximum
60
110
34
°C/W
Unit
Document Number: 71887
S09-0704-Rev. D, 27-Apr-09
www.vishay.com
1
Si4942DY
Vishay Siliconix
SPECIFICATIONS
T
J
= 25 °C, unless otherwise noted
Parameter
Static
Gate Threshold Voltage
Gate-Body Leakage
Zero Gate Voltage Drain Current
On-State Drain Current
a
Drain-Source On-State Resistance
a
Forward Transconductance
a
Diode Forward Voltage
a
Dynamic
b
Total Gate Charge
Gate-Source Charge
Gate-Drain Charge
Gate Resistance
Turn-On Delay Time
Rise Time
Turn-Off Delay Time
Fall Time
Source-Drain Reverse Recovery Time
Q
g
Q
gs
Q
gd
R
g
t
d(on)
t
r
t
d(off)
t
f
t
rr
I
F
= 1.8 A, dI/dt = 100 A/µs
V
DD
= 20 V, R
L
= 20
Ω
I
D
≅
1 A, V
GEN
= 10 V, R
g
= 6
Ω
0.5
V
DS
= 20 V, V
GS
= 10 V, I
D
= 5.7 A
21
3.3
5.8
1.1
13
10
31
11
30
1.6
20
15
50
20
60
ns
Ω
32
nC
V
GS(th)
I
GSS
I
DSS
I
D(on)
R
DS(on)
g
fs
V
SD
V
DS
= V
GS
, I
D
= 250 µA
V
DS
= 0 V, V
GS
= ± 20 V
V
DS
= 40 V, V
GS
= 0 V
V
DS
= 40 V, V
GS
= 0 V, T
J
= 55 °C
V
DS
≥
5 V, V
GS
= 10 V
V
GS
= 10 V, I
D
= 7.4 A
V
GS
= 4.5 V, I
D
= 6.4 A
V
DS
= 15 V, I
D
= 7.4 A
I
S
= 1.8 A, V
GS
= 0 V
30
0.017
0.023
25
0.75
1.1
0.021
0.028
1.0
3
± 100
1
5
V
nA
µA
A
Ω
S
V
Symbol
Test Conditions
Min.
Typ.
Max.
Unit
Notes:
a. Pulse test; pulse width
≤
300 µs, duty cycle
≤
2 %.
b. Guaranteed by design, not subject to production testing.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation
of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
TYPICAL CHARACTERISTICS
25 °C unless otherwise noted
30
V
GS
= 10 thru 5 V
25
I
D
- Drain Current (A)
4V
25
I
D
- Drain Current (A)
30
20
20
15
15
10
10
T
C
= 125 °C
5
25 °C
- 5 5 °C
0
5
3V
0
0
1
2
3
4
5
0
1
2
3
4
5
V
DS
- Drain-to-Source Voltage (V)
V
GS
- Gate-to-Source Voltage (V)
Output Characteristics
Transfer Characteristics
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Document Number: 71887
S09-0704-Rev. D, 27-Apr-09
Si4942DY
Vishay Siliconix
TYPICAL CHARACTERISTICS
25 °C unless otherwise noted
0.040
1600
R
DS(on)
- On-Resistance (Ω)
0.030
V
GS
= 4.5 V
C - Capacitance (pF)
1280
C
iss
960
0.020
V
GS
= 10 V
640
0.010
320
C
rss
C
oss
0.000
0
5
10
15
20
25
30
0
0
8
16
24
32
40
I
D
- Drain Current (A)
V
DS
- Drain-to-Source Voltage (V)
On-Resistance vs. Drain Current
10
V
GS
- Gate-to-Source Voltage (V)
V
DS
= 20 V
I
D
= 5.7 A
8
1.8
V
GS
= 10 V
I
D
= 7.4 A
Capacitance
R
DS(on)
- On-Resistance
(Normalized)
1.6
1.4
6
1.2
4
1.0
2
0.8
0
0
5
10
15
20
25
Q
g
- Total Gate Charge (nC)
0.6
- 50
- 25
0
25
50
75
100
125
150
T
J
- Junction Temperature (°C)
Gate Charge
0.10
On-Resistance vs. Junction Temperature
30
10
I
S
- Source Current (A)
T
J
= 150
°C
R
DS(on)
- On-Resistance (Ω)
0.08
0.06
I
D
= 7.4 A
0.04
1
T
J
= 25
°C
0.02
0.1
0.0
0.00
0.2
0.4
0.6
0.8
1.0
1.2
0
2
4
6
8
10
V
SD
- Source-to-Drain Voltage (V)
V
GS
- Gate-to-Source Voltage (V)
Source-Drain Diode Forward Voltage
On-Resistance vs. Gate-to-Source Voltage
Document Number: 71887
S09-0704-Rev. D, 27-Apr-09
www.vishay.com
3
Si4942DY
Vishay Siliconix
TYPICAL CHARACTERISTICS
25 °C unless otherwise noted
0.6
0.4
40
0.2
V
GS(th)
Variance (V)
0.0
- 0.2
- 0.4
- 0.6
- 0.8
- 1.0
- 50
0
0.001
I
D
= 250
µA
Power (W)
30
50
20
10
- 25
0
25
50
75
100
125
150
0.01
0.1
1
Time (s)
10
100
600
T
J
- Temperature (°C)
Threshold Voltage
100
1 ms
Limited by R
DS(on)
*
10
I
D
- Drain Current (A)
Single Pulse Power
1
10 ms
100 ms
T
A
= 25 °C
Single Pulse
1s
10 s
DC
0.1
0.01
0.1
1
10
100
V
DS
- Drain-to-Source Voltage (V)
* V
DS
> minimum V
GS
at which R
DS(on)
is specified
Safe Operating Area
2
1
Normalized Effective Transient
Thermal Impedance
Duty Cycle = 0.5
0.2
Notes:
0.1
0.1
0.05
t
1
P
DM
0.02
Single Pulse
0.01
10
-4
10
-3
10
-2
10
-1
1
Square Wave Pulse Duration (s)
t
2
1. Duty Cycle, D =
2. Per Unit Base = R
thJA
= 90
°C/W
3. T
JM
- T
A
= P
DM
Z
thJA(t)
4. Surface Mounted
t
1
t
2
10
100
600
Normalized Thermal Transient Impedance, Junction-to-Ambient
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Document Number: 71887
S09-0704-Rev. D, 27-Apr-09
Si4942DY
Vishay Siliconix
TYPICAL CHARACTERISTICS
25 °C unless otherwise noted
2
1
Normalized Effective Transient
Thermal Impedance
Duty Cycle = 0.5
0.2
0.1
0.1
0.05
0.02
Single Pulse
0.01
10
-4
10
-3
10
-2
10
-1
Square Wave Pulse Duration (s)
1
10
Normalized Thermal Transient Impedance, Junction-to-Foot
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
www.vishay.com/ppg?71887.
Document Number: 71887
S09-0704-Rev. D, 27-Apr-09
www.vishay.com
5
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