SCHOTTKY RECTIFIER 3 Amp
MBRS340TR
Bulletin PD-20585 rev. E 07/04
1
www.irf.com
Major Ratings and Characteristics
IF(AV) Rectangular 3.0 A
waveform
VRRM 40 V
IFSM @ t p= 5 µs sine 1580 A
VF@
3.0 Apk, TJ
= 125°C 0.43 V
TJrange - 55 to 150 °C
Characteristics Value Units The MBRS340TR 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
Case Styles
MBRS340TR
SMC
IF(AV) = 3.0Amp
VR = 40V
MBRS340TR
Bulletin PD-20585 rev. E 07/04
2www.irf.com
Part number MBRS340TR
VRMax. DC Reverse Voltage (V) 40
VRWM Max. Working Peak Reverse Voltage (V)
Voltage Ratings
IF(AV) Max. Average Forward Current 3.0 A 50% duty cycle @ TL = 118 °C, rectangular wave form
4.0 50% duty cycle @ TL = 110 °C, rectangular wave form
IFSM Max. Peak One Cycle Non-Repetitive 1580 A 5µs Sine or 3µs Rect. pulse
Surge Current 80 10ms Sine or 6ms Rect. pulse
EAS Non Repetitive Avalanche Energy 6 mJ TJ = 25 °C, IAS = 1.0A, L = 12mH
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
Absolute Maximum Ratings
Following any rated
load condition and
with rated VRRM applied
Parameters Value Units Conditions
Parameters Value Units Conditions
VFM Max. Forward Voltage Drop (1) 0.525 V @ 3A
0.68 V @ 6A
0.43 V @ 3A
0.57 V @ 6A
IRM Max. Reverse Leakage (1) 2.0 mA TJ = 25 °C
Current 20 mA TJ = 100°C
35 mA TJ = 125 °C
CTMax. Junction Capacitance 230 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)
Electrical Specifications
(1) Pulse Width < 300µs, Duty Cycle < 2%
VR = rated VR
TJ = 125 °C
TJ = 25 °C
Thermal-Mechanical Specifications
TJMax. Junction Temperature Range (*) - 55 to 150 °C
Tstg Max. Storage Temperature Range - 55 to 150 °C
RthJL Max. Thermal Resistance 12 °C/W DC operation
Junction to Lead (**)
RthJA Max. Thermal Resistance 46 °C/W DC operation
Junction to Ambient
wt Approximate Weight 0.24 (0.008) g (oz.)
Case Style SMC Similar to DO-214AB
Device Marking IR34
Parameters Value Units Conditions
(**) Mounted 1 inch square PCB
< thermal runaway condition for a diode on its own heatsink
(*) dPtot 1
dTj Rth( j-a)
MBRS340TR
Bulletin PD-20585 rev. E 07/04
3www.irf.com
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)
10
100
1000
0 5 10 15 20 25 30 35 40 45
T = 25˚C
J
0.1
1
10
100
0.00001 0.0001 0.001 0.01 0.1 1 10 100
Single Pulse
(Thermal Resistance)
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
Notes:
1. Duty factor D = t1/ t 2
2. Peak Tj = Pdm x ZthJC+Tc
2
t
1
t
P
DM
1
10
100
1000
10000
100000
0 1020304
0
25˚C
50˚C
75˚C
100˚C
125˚C
T = 150˚C
J
0.1
1
10
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
T = 150˚C
T = 125˚C
T = 25˚C
J
J
J
MBRS340TR
Bulletin PD-20585 rev. E 07/04
4www.irf.com
Fig. 4 - Maximum Average Forward Current
Vs. Allowable Lead Temperature
Fig. 5 - Maximum Average Forward Dissipation
Vs. Average Forward Current
Fig. 6 - 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); IR @ VR1
= 80% rated VR
Average Forward Current - I F(AV) (A)
Allowable Lead Temperature (°C)
Average Forward Current - I F(AV) (A)
Average Power Loss (Watts)
Square Wave Pulse Duration - Tp (Microsec)
Non-Repetitive Surge Current - I FSM (A)
60
70
80
90
100
110
120
130
140
150
160
012345
DC
Square wave (D = 0.50)
Rated Vr applied
see note (2)
D=0.20
D=0.25
D=0.33
D=0.50
D=0.75
10
100
1000
10 100 1000 10000
At Any Rated Load Condition
And With rated Vrrm Applied
Following Surge
0
0.5
1
1.5
2
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
DC
RMS Limit
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
MBRS340TR
Bulletin PD-20585 rev. E 07/04
5www.irf.com
IR LOGO
YYWWX
"Y" = 1st digit of the YEAR "standard product"
"P" = "Lead-Free"
SITE ID
2nd digit of the YEAR
WEEK
IR34
VOLTAGE
CURRENT
IR34
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: IR34
CATHODE ANODE
1 2
12
POLARITY PART NUMBER
MBRS340TR
Bulletin PD-20585 rev. E 07/04
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. 07/04
Data and specifications subject to change without notice.
This product has been designed and qualified for Industrial Level.
Qualification Standards can be found on IR's Web site.
Tape & Reel Information
Dimensions in millimetres and (inches)
Ordering Information Table
Device Code
1 524
3
1- Schottky MBR Series
2- S = SMC
3- Current Rating (3 = 3 A)
4- Voltage Rating (40 = 40V)
5- TR = Tape & Reel (3000 pieces)
6y none = Standard Production
y PbF = Lead-Free
MBR S 3 40 TR -
6
