Bulletin PD-20643 rev. D 03/03
MBRA120
SCHOTTKY RECTIFIER
Major Ratings and Characteristics
Characteristics MBRA120 Units
I
Rect. Waveform 1.0 A
FAV
V
RRM
I
@ tp = 5 µs sine 310 A
FSM
VF@ 1.0Apk, TJ=125°C 0.34 V
TJrange - 65 to 150 °C
Device Marking: IR12A
20 V
1.0 Amp
SMA
Description/ Features
The MBRA120 surface mount Schottky rectifier has been
designed for applications requiring low forward drop and very
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
Low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
CATHODE ANODE
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1.40 (.055)
1.60 (.062)
2.00 (.078)
2.44 (.096)
0.76 (.030)
1.52 (.060)
2.50 (.098)
2.90 (.114)
4.00 (.157)
4.60 (.181)
.152 (.006)
.305 (.012)
.103 (.004)
4.80 (.188)
5.28 (.208)
.203 (.008)
Outline SMA Similar to D-64
1 2
1.47 MIN.
SOLDERING PAD
2
2.10 MAX.
(.085 MAX. )
5.53 (.218)
POLARITY PART NUMBER
1
(.058 MIN.)
1.27 MIN.
(.050 MIN.)
Dimensions in millimeters and (inches)
For recommended footprint and soldering techniques refer to application note #AN-994
1
MBRA120
Bulletin PD-20643 rev. D 03/03
Voltage Ratings
Part number MBRA120
VRMax. DC Reverse Voltage (V)
V
Max. Working Peak Reverse Voltage (V)
RWM
20
Absolute Maximum Ratings
Parameters Value Units Conditions
I
Max. Average Forward Current 1.0 A 50% duty cycle @ TL = 136°C, rectangular wave form
F(AV)
I
Max. Peak One Cycle Non-Repetitive 310 5µs Sine or 3µs Rect. pulse
FSM
Surge Current 40 10ms Sine or 6ms Rect. pulse
EASNon Repetitive Avalanche Energy 2.0 mJ TJ = 25 °C, IAS = 1A, L = 4mH
IARRepetitive Avalanche Current 1.0 A
Following any rated
load condition and
with rated V
RRM
applied
Electrical Specifications
Parameters Typ. Max. Units Conditions
VFMMax. Forward Voltage Drop (1) 0.42 0.45 V @ 1A
0.46 0.52 V @ 2A
0.33 0.37 V @ 1A
0.39 0.45 V @ 2A
0.30 0.35 V @ 1A
0.36 0.43 V @ 2A
IRMMax. Reverse Leakage Current(1 ) 0.015 0.2 mA T J = 25 °C
2.0 6.0 mA TJ = 100 °C VR = rated V
7.0 20 mA TJ = 125 °C
CTTypical Junction Capacitance 110 - pF VR = 5VDC (test signal range 100kHz to
1Mhz), @ 25°C
LSTypical Series Inductance 2.0 - nH Measured lead to lead 5mm from package body
dv/dt Max. Voltage Rate of Change - 10000 V/ µs (Rated VR)
(1) Pulse Width < 300µs, Duty Cycle < 2%
TJ = 25 °C
TJ = 100 °C
TJ = 125 °C
Thermal-Mechanical Specifications
Parameters Value Units Conditions
TJMax. Junction Temperature Range(*) - 65 to 150 °C
T
Max. Storage Temperature Range - 65 t o 150 °C
stg
R
Max. Thermal Resistance Junction 35 °C/W DC operation
thJL
to Lead (**)
R
Max. Thermal Resistance Junction 80 °C/W
thJA
to Ambient
Wt Approximate Weight 0.07(0.002) gr (oz)
Case Style SMA Similar D-64
Device Marking IR12A
(*) dPtot 1
< thermal runaway condition for a diode on its own heatsink
dTj Rth( j-a)
(**) Mounted 1 inch square PCB
R
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(A)
0
MBRA120
Bulletin PD-20643 rev. D 03/03
100
Tj = 150˚C
10
F
1
10
(mA)
R
1
0.1
0.01
Reverse Current - I
0.001
0.0001
0 5 10 15 20
Reverse Voltage - VR (V)
Fig. 2 - Typical Peak Reverse Current
Vs. Reverse Voltage
125˚C
100˚C
75˚C
50˚C
25˚C
Tj = 150˚C
Tj = 125˚C
Instantaneous Forward Current - I
.1
0 0.2 0.4 0.6 0.8 1
Forward Voltage Drop - V
Tj = 100˚C
Tj = 25˚C
(V)
FM
Fig. 1 - Maximum Forward Voltage Drop Characteristics
1000
(pF)
T
Tj = 25˚C
100
Junction Capacitance - C
10
0 5 10 15 20
Reverse Voltage - VR (V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
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MBRA120
Bulletin PD-20643 rev. D 03/03
155
150
145
140
Square wave
135
Allowable Lead Temperature (°C)
see note (2)
130
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6
Average Forward Current - I
Fig. 4 - Maximum Average Forward Current
Vs. Allowable Lead Temperature
1000
(A)
FSM
100
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
DC
(A)
F(AV)
At Any Rated Load Condition
And With Rated Vrrm Applied
Following Surge
0.5
D = 0.20
D = 0.25
D = 0.33
0.4
D = 0.50
D = 0.75
0.3
RMS Limit
0.2
0.1
Allowable Power Loss (Watts)
0
0 0.4 0.8 1.2 1.6
DC
Average Forward Current - I
Fig. 5 - Maximum Average Forward Dissipation
Vs. Average Forward Current
F(AV)
(A)
Tj = 25˚C
Non-Repetitive Surge Current - I
10
10 100 1000 10000
Square Wave Pulse Duration - t p (microsec)
Fig. 6 - Maximum Peak Surge Forward Current Vs. Pulse Duration
(2) Formula used: TC = TJ - (Pd + Pd
Pd = Forward Power Loss = I
Pd
= Inverse Power Loss = VR1 x IR (1 - D)
REV
F(AV)
) x R
REV
x VFM @ (I
thJC
;
F(AV)
/ D) (see Fig. 6);
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Tape & Reel Information
NOTE:
1. OUTLINE CONFORMS TO EIA-481.
MBRA120
Bulletin PD-20643 rev. D 03/03
Dimensions in millimeters and (inches)
Marking & Identification
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.
IR12A
VOLTAGE
CURRENT
IR LOGO
YYWWX
SITE ID
WEEK
YEAR
Ordering Information
MBRA120TR - TAPE AND REEL
WHEN ORDERING, INDICATE THE PART NUMBER
AND THE QUANTITY ( IN MULTIPLES OF 7500
PIECES).
EXAMPLE: MBRA120TR - 15000 PIECES
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MBRA120
Bulletin PD-20643 rev. D 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.
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
Visit us at www.irf.com for sales contact information. 03/03
TAC Fax: (310) 252-7309
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