BA157 - BA159
PRV : 400 - 1000 Volts
Io : 1.0 Ampere
FEATURES :
*
*
*
*
*
*
High current capability
High surge current capability
High reliability
Low reverse current
Low forward voltage drop
Fast switching for high efficiency
FAST RECOVERY
RECTIFIER DIODES
DO - 41
1.00 (25.4)
MIN.
0.107 (2.7)
0.080 (2.0)
0.205 (5.2)
0.166 (4.2)
MECHANICAL DATA :
* Case : DO-41 Molded plastic
* Epoxy : UL94V-O rate flame retardant
* Lead : Axial lead solderable per MIL-STD-202,
Method 208 guaranteed
* Polarity : Color band denotes cathode end
* Mounting position : Any
* Weight : 0.34 gram
0.034 (0.86)
0.028 (0.71)
1.00 (25.4)
MIN.
Dimensions in inches and ( millimeters )
Rating at 25
°
C ambient temperature unless otherwise specified.
Single phase, half wave, 60 Hz, resistive or inductive load.
For capacitive load, derate current by 20%.
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
RATING
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Current
0.375"(9.5mm) Lead Length
Peak Forward Surge Current,
8.3ms Single half sine wave Superimposed
on rated load (JEDEC Method)
Maximum Peak Forward Voltage at I
F
= 1.0 Amp.
Maximum DC Reverse Current
at Rated DC Blocking Voltage
Ta = 25
°C
Ta = 100
°C
Ta = 45
°C
SYMBOL
V
RRM
V
RMS
V
DC
I
F(AV)
BA157
400
280
400
BA158
600
420
600
1.0
BA159
1000
700
1000
UNIT
V
V
V
A
I
FSM
V
F
I
R
I
R(H)
Trr
35
1.3
5.0
100
150
20
- 65 to + 150
- 65 to + 150
250
A
V
µA
µA
ns
pf
°C
°C
Maximum Reverse Recovery Time ( Note 1 )
Typical Junction Capacitance ( Note 2 )
Junction Temperature Range
Storage Temperature Range
C
J
T
J
T
STG
Notes :
( 1 ) Reverse Recovery Test Conditions : I
F
= 0.5 A, I
R
= 1.0 A, Irr = 0.25 A.
( 2 ) Measured at 1.0 MHz and applied reverse voltage of 4.0 V
DC
Page 1 of 2
Rev. 01 : Apr. 2, 2002
RATING AND CHARACTERISTIC CURVES ( BA157 - BA159 )
FIG.1 - REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM
50
Ω
10
Ω
+ 0.5 A
D.U.T.
50 Vdc
(approx.)
1
Ω
PULSE
GENERATOR
( NOTE 2 )
OSCILLOSCOPE
( NOTE 1 )
0
- 0.25 A
Trr
+
- 1.0 A
SET TIME BASE FOR 50-100 ns/cm
NOTES : 1. Rise Time = 7 ns max., Input Impedance = 1 megaohm, 22 pF.
2. Rise time = 10 ns max., Source Impedance = 50 ohms.
3. All Resistors = Non-inductive Types.
1 cm
FIG.2 - DERATING CURVE FOR OUTPUT
RECTIFIED CURRENT
1.0
35
FIG.3 - MAXIMUM NON-REPETITIVE PEAK
FORWARD SURGE CURRENT
PEAK FORWARD SURGE
CURRENT, AMPERES
8.3 ms SINGLE HALF SINE WAVE
28
Ta = 50
°C
AVERAGE FORWARD OUTPUT
CURRENT, AMPERES
0.8
0.6
21
0.4
14
0.2
RESISTIVE OR INDUCTIVE LOAD
0
0
25
50
75
100
125
150
175
7
0
1
2
4
6
10
20
40
60 100
AMBIENT TEMPERATURE, (
°
C)
FIG.4 - TYPICAL FORWARD CHARACTERISTICS
REVERSE CURRENT, MICROAMPERES
FORWARD CURRENT, AMPERES
20
10
Pulse Width = 300
µs
2% Duty Cycle
1.0
NUMBER OF CYCLES AT 60Hz
FIG.5 - TYPICAL REVERSE CHARACTERISTICS
10
T
J
= 100
°C
1.0
T
J
= 25
°C
0.1
0.1
T
J
= 25
°C
0.01
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0.01
0
20
40
60
80
100
120
140
FORWARD VOLTAGE, VOLTS
PERCENT OF RATED REVERSE VOLTAGE, (%)
Page 2 of 2
Rev. 01 : Apr. 2, 2002
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