ST34BF THRU ST310BF
SURFACE MOUNT TRENCH SCHOTTKY RECTIFIER
Reverse Voltage - 40 to 100 Volts
Forward Current - 3.0 Amperes
SMBF
Cathode Band
Top View
FEATURES
The plastic package carries Underwriters Laboratory
Flammability Classification 94V-0
Metal silicon junction,majority carrier conduction
High efficiency operation
Ultra low forward voltage drop,low power losses
High forward surge current capability
High temperature soldering guaranteed:
260 C/10 seconds,0.375
”
(9.5mm) lead length,
5 lbs. (2.3kg) tension
0.146(3.70)
0.138(3.50)
0.086(2.20)
0.075(1.90)
0.173(4.4)
0.165(4.2)
0.051(1.30)
0.043(1.10)
0.010(0.26)
0.0071(0.18)
0.051(1.30)
0.039(1.0)
MECHANICAL DATA
Case:
JEDEC SMBF molded plastic body
Terminals:
leads solderable per MIL-STD-750,
Method 2026
Mounting Position:
Any
Weight:57mg/0.002oz
0.216(5.5)
0.200(5.1)
Dimensions in inches and (millimeters)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25 C ambient temperature unless otherwise specified.
Single phase half-wave 60Hz,resistive or inductive load,for capacitive load current derate by 20%.
MDD Catalog Number
Maximum repetitive peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
Maximum average forward rectified current
0.375”(9.5mm) lead length(see fig.1)
Peak forward surge current
8.3ms single half sine-wave superimposed on
rated load (JEDEC Method)
Maximum instantaneous forward voltage at 3.0A
Maximum DC reverse current
T
A
=25 C
at rated DC blocking voltage
T
A
=100 C
Typical junction capacitance (NOTE 1)
Typical thermal resistance (NOTE 2)
Operating junction temperature range
Storage temperature range
SYMBOLS
ST34BF
40
28
40
ST36BF
60
42
60
3.0
ST310BF
100
70
100
UNITS
V
V
V
A
V
RRM
V
RMS
V
DC
I
(AV)
I
FSM
V
F
I
R
C
J
R
θ
JA
T
J
,
T
STG
80.0
0.41
0.10
20.0
500
68
-55 to +125
0.50
0.03
60.0
0.60
0.02
10.0
A
V
mA
pF
C/W
C
C
-55 to +150
-55 to +150
Note:1.Measured
at 1MHz and applied reverse voltage of 4.0V D.C.
2.Thermal resistance from junction to ambient at 0.375”(9.5mm)lead length,P.C.B. mounted
RATINGS AND CHARACTERISTIC CURVES ST34BF THRU ST310BF
AVERAGE FORWARD RECTIFIED CURRENT,
AMPERES
FIG. 1- FORWARD CURRENT DERATING CURVE
PEAK FORWARD SURGE CURRENT,
AMPERES
FIG. 2-MAXIMUM NON-REPETITIVE PEAK FORWARD
SURGE CURRENT
90
3
P.C.B mounted on
0.2*0.2"(5.0*5.0mm)
copper pad areas
75
2.4
60
1.8
Single Phase
Half Wave 60Hz
Resistive or
inductive Load
ST34BF
ST36BF-ST310BF
45
1.2
30
0.6
ST34BF
ST36BF-ST310BF
0
25
50
75
100
125
150
175
15
8.3ms SINGLE HALF SINE-WAVE
0
0
1
10
100
LEAD TEMPERATURE, C
NUMBER OF CYCLES AT 60 Hz
INSTANTANEOUS REVERSE CURRENT,
MILLAMPERES
FIG. 3-TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS
FIG. 4-TYPICAL REVERSE CHARACTERISTICS
100
INSTANTANEOUS FORWARD
CURRENT,AMPERES
20
10
10
TJ=100 C
1
T
J
=25 C
PULSE WIDTH=300
µs
2%DUTY CYCLE
1
TJ=75 C
0.1
ST34BF
ST36BF
ST310BF
0.2
0.4
0.6
0.8
1.0
1.1
0.1
0.01
TJ=25 C
0.01
0.001
0
20
40
60
80
100
INSTANTANEOUS FORWARD VOLTAGE,
VOLTS
PERCENT OF PEAK REVERSE VOLTAGE,%
TRANSIENT THERMAL IMPEDANCE,
C/W
FIG. 5-TYPICAL JUNCTION CAPACITANCE
FIG. 6-TYPICAL TRANSIENT THERMAL IMPEDANCE
100
JUNCTION CAPACITANCE, pF
2000
1000
10
100
1
T
J
=25 C
0.1
0.01
0.1
1
10
100
10
0.1
1.0
10
100
REVERSE VOLTAGE,VOLTS
t,PULSE DURATION,sec.
The cruve graph is for reference only, can't be the basis for judgment(曲线图仅供参考)!
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