SR302-G Thru. SR308-G
Forward current: 3.0A
Reverse voltage: 20 to 80V
RoHS Device
Schottky Barrier Rectifier
QW-BB018 Page 1
REV:A
Features
-Fast switching.
-Low forward voltage, high current capability.
-Low power loss, high efficiency.
-High current surge capability.
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-High temperature soldering guaranteed: 250 C/10
seconds, 0.375” (9.5mm) lead length at 5lbs (2.3kg)
tension.
Mechanical Data
-Case: transfer molded plastic.
-Epoxy: UL94V-0 rate flame retardant.
-Polarity: color band denoted cathode end.
-Lead: plastic axial lead, solderable per MIL-STD-
202E, method 208C.
-Mounting position: any.
-Weight: 0.042 ounce, 1.19 gram.
Dimensions in inches and (millimeter)
SMD Diodes Specialist
COMCHIP
DO-27
1.0(25.4) min.
1.0(25.4) min.
0.375(9.50)
0.335(8.50)
0.220(5.60)
0.197(5.00)
0.052(1.30)
0.048(1.20)
Parameter Unit
Maximum Ratings and Electrical Characteristics
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Ratings at Ta=25 C unless otherwise noted.
Single phase, half wave, 60Hz, resistive or inductive loaded.
For capacitive load, derate current by 20% .
Maximum repetitive peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
Maximum average forward
rectified current, 0.375”
(9.5mm) lead length at
Peak forward surge current, 8.3ms single half sine-
wave, superimposed on rated load (JEDEC method)
Maximum instantaneous forward voltage at IF=3A
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Maximum DC reverse current TA=25 C
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at rated DC blocking voltage (Note 1) TA=100 C
Typical junction capacitance (Note 2)
Typical thermal resistance (Note 3)
Operating junction temperature range
Storage temperature range
Symbol
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TL=75 C (SR302-G ~ SR304-G)
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TL=100 C (SR305-G ~ SR308-G)
VRRM
VRMS
VDC
IAV
IFSM
VF
IR
CJ
RθJA
TJ
TSTG
SR302
-G
SR303
-G
SR304
-G
SR305
-G
SR306
-G
SR308
-G
20
14
20
30
21
30
0.55
-65 ~ +125
40
28
40
50
35
50
60
42
60
80
57
80
3.0
150
3.0
30
40
-65 ~ +150
0.75 0.80
200
-65 ~ +150
V
V
V
A
A
V
mA
pF
OC/W
OC
OC
Note:
1. Test pulse: 300μS pulse width, 1% duty cycle.
2. Measured at 1MHz and applied reverse voltage of 4.0V.
3. Thermal resistance from junction to ambient P.C.B. mounted with 0.375" (9.5mm) lead length with 2.5"×2.5"(63.5×63.5mm) copper pads.
RATING AND CHARACTERISTIC CURVES (SR302-G Thru. SR308-G)
Page 2
QW-BB018
Fig.1 Typical Forward Current Derating Curve
0
IAV, Average Forward Current (A)
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TL, Lead Temperature ( C)
0 75 175
Fig.2 Maximum Non-Repetitive Peak
Forward Surge Current
0
IFSM, Peak Forward Surge Current (A)
Number of Cycles at 60Hz
1 100
Fig.3 Typical Instantaneous Forward
Characteristics
0.01
IF, Instantaneous Forward Current (A)
VF, Instantaneous Forward Voltage (V)
0
0.1
1.4
50 100
50
125
2
3
10
150
Fig.4 Typical Reverse Characteristics
0.001
IR, Instantaneous Reverse Voltage (mA)
Percent of Rated Peak Reverse Voltage (%)
0.1
1.0
1.0
100
25 150
1
100
1
SMD Diodes Specialist
COMCHIP
Fig.5 Typical Junction Capacitance
10
CJ, Junction Capacitance (pF)
VR, Reverse Voltage (V)
10
100
1000
0.1 100
REV:A
S 0R3 2-G ~ SR304-G
3
SR305-G ~SR 08-G
Single phase, half wave 60Hz
Inductive or resistive load
0.375" (9.5mm) lead length
1 Cycle
8.3ms single half sine-wave
(JEDEC method)
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0.2 0.4 0.6 0.8 1.2
SR305-G~SR308-G
SR302-G~SR304-G
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TJ=25 C
Pulse width=300μs
1% duty cycle SR305-G~SR308-G
SR302-G~SR304-G
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TJ=75 C
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TJ=25 C
0.01
0140
100
20 40 60 80 120
1
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TJ=25 C
f=1MHz
Vsig=50mV
SR505-G~SR508-G
SR502-G~SR504-G
Schottky Barrier Rectifier
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TJ=125
10