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SCHOTTKY RECTIFIER
3 Amp
MBRS320TRPbF
Bulletin PD-20410 07/04
1
Major Ratings and Characteristics
I
F(AV)
Rectangular
3.0
A
waveform
V
RRM
20
V
I
FSM
@ t
p
= 5 µs sine
820
A
V
F
@
3.0 Apk, T
J
= 125°C
0.36
V
T
J
range
- 65 to 150
°C
Characteristics
Value
Units
The MBRS320TRPbF surface-mount Schottky rectifier has
been designed for applications requiring low forward drop and
small foot prints on PC boards. Typical applications are in disk
drives, switching power supplies, converters, free-wheeling
diodes, battery charging, and reverse battery protection.
Small foot print, surface mountable
Very low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
Lead-Free ("PbF" suffix)
Description/ Features
www.irf.com
Case Styles
MBRS320TRPbF
SMC
I
F(AV)
= 3.0Amp
V
R
= 20V
MBRS320TRPbF
Bulletin PD-20410 07/04
2
www.irf.com
Part number
MBRS320PbF
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
Voltage Ratings
20
V
FM
Max. Forward Voltage Drop (1)
0.41
0.45
V
@ 3A
0.45
0.53
V
@ 6A
0.29
0.36
V
@ 3A
0.35
0.46
V
@ 6A
I
RM
Max. Reverse Leakage Current (1)
0.04
0.5
mA
T
J
= 25 °C
8.0
20
mA
T
J
= 100 °C
V
R
= rated V
R
23
35
mA
T
J
= 125 °C
C
T
Typical Junction Capacitance
360
-
pF
V
R
= 5V
DC
(test signal range 100kHz to
1Mhz), @ 25°C
L
S
Typical Series Inductance
3.0
-
nH
Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change
-
10000
V/ µs (Rated V
R
)
T
J
= 25 °C
T
J
= 125 °C
Electrical Specifications
Parameters
Typ.
Max.
Units
Conditions
(1) Pulse Width < 300µs, Duty Cycle < 2%
T
J
Max. Junction Temperature Range (*) - 65 to 150
°C
T
stg
Max. Storage Temperature Range
- 65 to 150
°C
R
thJL
Max. Thermal Resistance Junction
12
°C/W DC operation
to Lead
(**)
R
thJA
Max. Thermal Resistance Junction
46
°C/W
to Ambient
Wt
Approximate Weight
0.24(0.008) gr (oz)
Case Style
SMC
Similar DO-214AB
Device Marking
IR32
Parameters
Value
Units
Conditions
<
thermal runaway condition for a diode on its own heatsink
(**) Mounted 1 inch square PCB
Thermal-Mechanical Specifications
(*) dPtot
1
dTj
Rth( j-a)
I
F(AV)
Max. Average Forward Current
3.0
A
50% duty cycle @ T
L
= 136°C, rectangular wave form
I
FSM
Max. Peak One Cycle Non-Repetitive
820
5µs Sine or 3µs Rect. pulse
Surge Current
80
10ms Sine or 6ms Rect. pulse
E
AS
Non Repetitive Avalanche Energy
4
mJ
T
J
= 25 °C, I
AS
= 1.0A, L = 8mH
I
AR
Repetitive Avalanche Current
1.0
A
Current decaying linearly to zero in 1 µsec
Frequency limited by T
J
max. Va = 1.5 x Vr typical
Parameters
Value Units Conditions
Absolute Maximum Ratings
Following any rated
load condition and
with rated V
RRM
applied
MBRS320TRPbF
Bulletin PD-20410 07/04
3
www.irf.com
0.1
1
10
100
0
0.2
0.4
0.6
0.8
Tj = 150°C
Tj = 125°C
Tj = 25°C
0.001
0.01
0.1
1
10
100
0
5
10
15
20
125°C
100°C
75°C
50°C
25°C
Tj = 150°C
100
1000
0
5
10
15
20
Tj = 25°C
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
Fig. 1 - Max. Forward Voltage Drop
Characteristics (Per Leg)
Instantaneous Forward Current - I
F
(A)
Forward Voltage Drop - V
FM
(V)
Reverse Current - I
R
(mA)
Reverse Voltage - V
R
(V)
Reverse Voltage - V
R
(V)
Junction Capacitance - C
T
(p F)
Thermal Impedance Z
thJC
(°C/W)
t
1
, Rectangular Pulse Duration (Seconds)
0.1
1
10
100
0.00001
0.0001
0.001
0.01
0.1
1
10
100
Single Pulse
(Thermal Resistance)
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
Notes:
1. Duty factor D = t1/ t2
2. Peak Tj = Pdm x ZthJC + Tc
2
t
1
t
P
DM
MBRS320TRPbF
Bulletin PD-20410 07/04
4
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Fig. 5 - Maximum Average Forward Current
Vs. Allowable Lead Temperature
Fig. 6 - Maximum Average Forward Dissipation
Vs. Average Forward Current
Fig. 7 - Maximum Peak Surge Forward Current Vs. Pulse Duration
(2) Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward Power Loss = I
F(AV)
x V
FM
@ (I
F(AV)
/
D) (see Fig. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D)
Average Forward Current - I
F(AV)
(A)
Allowable Lead Temperature (°C)
Average Forward Current - I
F(AV)
(A)
Allowable Power Loss (Watts)
Square Wave Pulse Duration - t
p
(microsec)
Non-Repetitive Surge Current - I
FSM
(A)
120
125
130
135
140
145
150
155
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
DC
see note (2)
Square wave
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
0
1
2
3
4
5
DC
RMS Limit
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
10
100
1000
10
100
1000
10000
Tj = 25°C
At Any Rated Load Condition
And With Rated Vrrm Applied
Following Surge
MBRS320TRPbF
Bulletin PD-20410 07/04
5
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IR LOGO
PYWWX
"Y" = 1st digit of the YEAR "standard product"
"P" = "Lead-Free"
SITE ID
2nd digit of the YEAR
WEEK
VOLTAGE
CURRENT
IR32
IR32
Dimensions in millimeters and (inches)
Outline SMC
For recommended footprint and soldering techniques refer to application note #AN-994
Outline Table
Marking & Identification
Each device has 2 rows for identification. The first row designates the device as manufactured by International
Rectifier, indicated by the letters "IR", and the Part Number (indicates the current, the voltage rating and
Schottky Generation). The second row indicates the year, the week of manufacturing and the Site ID.
5.59 (.220)
6.22 (.245)
6.60 (.260)
7.11 (.280)
2.75 (.108)
3.15 (.124)
.152 (.006)
.305 (.012)
2.00 (.079)
2.62 (.103)
0.76 (.030)
1.52 (.060)
.102 (.004)
.203 (.008)
7.75 (.305)
8.13 (.320)
Device Marking: IR32
CATHODE
ANODE
1
2
1
2
POLARITY
PART NUMBER
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