SCHOTTKY RECTIFIER 3 Amp
MBRS320
Bulletin PD-20645 rev. D 03/03
1
Major Ratings and Characteristics
IF(AV) Rectangular 3.0 A
waveform
VRRM 20 V
IFSM @ t p= 5 µs sine 820 A
VF@ 3.0 Apk, TJ = 125°C 0.36 V
TJrange - 65 to 150 °C
Characteristics MBRS320 Units The MBRS320 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
Description/ Features
SMC
Outline SMC
Dimensions in millimeters and (inches)
For recommended footprint and soldering techniques refer to Application Note # AN-994
Device Marking: IR32
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)
CATHODE ANODE
1 2
12
POL A RITY PART NUMBER
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MBRS320
Bulletin PD-20645 rev. D 03/03
2www.irf.com
Part number MBRS320
VRMax. DC Reverse Voltage (V)
VRWM Max. Working Peak Reverse Voltage (V)
Voltage Ratings
20
VFM 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
IRM Max. Reverse Leakage Current (1) 0.04 0.5 mA T J = 25 °C
8.0 20 mA TJ = 100 °C VR = rated VR
23 35 mA TJ = 125 °C
CTTypical Junction Capacitance 360 - pF VR = 5VDC (test signal range 100kHz to
1Mhz), @ 25°C
LSTypical Series Inductance 3.0 - nH Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change - 10000 V/ µs (Rated VR)
TJ = 25 °C
TJ = 125 °C
Electrical Specifications
Parameters Typ. Max. Units Conditions
(1) Pulse Width < 300µs, Duty Cycle < 2%
TJMax. Junction Temperature Range (*) - 65 to 150 °C
Tstg Max. Storage Temperature Range - 65 to 150 °C
RthJL Max. Thermal Resistance Junction 12 °C/W DC operation
to Lead (**)
RthJA 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)
IF(AV) Max. Average Forward Current 3.0 A 50% duty cycle @ TL = 136°C, rectangular wave form
IFSM Max. Peak One Cycle Non-Repetitive 820 5µs Sine or 3µs Rect. pulse
Surge Current 80 10ms Sine or 6ms Rect. pulse
EAS Non Repetitive Avalanche Energy 4 mJ TJ = 25 °C, IAS = 1.0A, L = 8mH
IAR Repetitive Avalanche Current 1.0 A Current decaying linearly to zero in 1 µsec
Frequency limited by TJ max. Va = 1.5 x Vr typical
Parameters Value Units Conditions
Absolute Maximum Ratings
Following any rated
load condition and
with rated VRRM applied
MBRS320
Bulletin PD-20645 rev. D 03/03
3
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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 - VFM (V)
Reverse Current - I R (mA)
Reverse Voltage - VR (V)
Reverse Voltage - VR (V)
Junction Capacitance - C T (p F)
Thermal Impedance Z thJC (°C/W)
t1 , 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
MBRS320
Bulletin PD-20645 rev. D 03/03
4www.irf.com
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: TC = TJ - (Pd + PdREV) x RthJC ;
Pd = Forward Power Loss = IF(AV) x VFM @ (IF(AV) / D) (see Fig. 6);
PdREV = Inverse Power Loss = VR1 x IR (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
012345
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
MBRS320
Bulletin PD-20645 rev. D 03/03
5
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Tape & Reel Information
Dimensions in millimetres and (inches)
Marking & Identification Ordering Information
MBRS320TR - TAPE AND REEL
WHEN ORDERING, INDICATE THE PART
NUMBER AND THE QUANTITY ( IN MULTIPLES OF
3000 PIECES).
EXAMPLE: MBRS320TR - 6000 PIECES
16 (0.63)
FEED DIRECTION
8 (0.32)
16 (0.63)
330 (13)
Each device has 2 rows for identification. The first row
designates the device as manufactured by International
Rectifier as indicated by the letters "IR", and the Part
Number (indicates the current and the voltage rating).
The second row indicates the year, the week of
manufacturing and the Site ID.
IR LOGO
YEAR
CURRENT
IR32 VOLTAGE
YYWWX
WEEK
SITE ID
MBRS320
Bulletin PD-20645 rev. D 03/03
6www.irf.com
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7309
Visit us at www.irf.com for sales contact information. 03/03
Data and specifications subject to change without notice.
This product has been designed for Industrial Level.
Qualification Standards can be found on IR's Web site.
