BA157 THRU BA159
Features
Mechanical Data
· Plastic package has Underwrites Laboratory Flammability
Classification 94V-0
· Fast switching speed
· Diffused junction
· High current capability
· High temperature soldering guaranteed : 250℃/10 seconds,
0.375"(9.5mm) lead length, 5 lbs.(2.3kg) tension.
Maximum Ratings And Electrical Characteristics
· Case : JEDEC DO-41 molded plastic body
· Terminals : Plated axial lead solderable per MIL-STD-750,
method 2026
· Polarity : Color band denotes cathode end
· Mounting Position : Any
· Weight : 0.012 ounce, 0.34 gram
(Ratings at 25℃ ambient temperature unless otherwise specified, Single phase, half wave 60Hz, resistive or inductive
load. For capacitive load, derate by 20%)
CURRENT 1.0 Ampere
VOLTAGE 400 to 1000 Volts
Notes:
(1) Test conditions: I
F
=0.5A, I
R
=1.0A, I
rr
=0.25A.
(2) Measured at 1MHz and applied reverse voltage of 4.0 Volts.
Maximum recurrent peak reverse voltage
Maximum RMS voltage
Maximum DC blocking voltage
Volts
Peak forward surge current 10ms single half
sine-wave superimposed on rated load at
Rload at T
A
=25℃
V
DC
Maximum average forward rectified current
Rload at T
A
=50℃
Maximum instantaneous forward voltage
at 1.0A
V
RRM
Volts
Symbols Units
1.3V
F
V
RMS
1.0
Amps35.0I
FSM
T
J
T
STG
-65 to +150 ℃
Volts
Amp
Maximum DC reverse current at rated DC
blocking voltage T
A
=25℃
Maximum reverse recovery time (Note 1)
Typical junction capacitance (Note 2)
Operating junction and storage
temperature range
5.0
Volts
μA
ns
pF
I
(AV)
I
R
Trr
6.0
C
J
400
BA157
280
400
600
BA158
420
600
1000
BA159
700
1000
Max. thermal resistance
250
60
150
R
θJA
℃/W
Dimensions in inches and (millimeters)
DO-41
1.0(25.4)
MIN.
1.0(25.4)
MIN.
0.205(5.2)
0.166(4.2)
0.034(0.9)
0.028(0.7)
DIA.
0.107(2.7)
0.080(2.0)
DIA.
RATINGS AND CHARACTERISTIC CURVES BA157 THRU BA159
FIG.1-TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS
FIG.2-TYPICAL FORWARD CURRENT
DERATING CURVE
FIG.4-TYPICAL JUNCTION CAPACITANCEFIG.3-TYPICAL THERMAL IMPEDANCE
Tj=25℃
+VF-
IF
typ
max
IF INSTANTANEOUS FORWARD CURRENT(mA)
1.20.40 0.8 1.6
VF INSTANTANEOUS FORWARD VOLTAGE DROP (V)
500
1000
10
0.5
1
5
50
100
typ
max
I,LEAD LENGTH (MM)
100 20 30 35
80
40
20
90
60
R
QJA
THERMAL RESISTANCE JUNCTION AMBIENT(℃/W)
ll
VR REVERSE VOLTAGE (V)
CJ DIODE CAPACITANCE(pF)
1 100010010
1
10
4
2
8
6
typ
Tj=25℃
f=1MHz
C-Load
R-Load
10mm10mm
LEAD TEMPERATURE( ℃)
IF AVERAGE FORWARD CURRENT (A)
1250 25 1501007550 175
0.25
1
1.25
0.8
0.75
0.50
