BA157 - BA159 FAST RECOVERY
RECTIFIER DIODES
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
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
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
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%.
SYMBOL BA157 BA158 BA159 UNIT
Maximum Recurrent Peak Reverse Voltage VRRM 400 600 1000 V
Maximum RMS Voltage VRMS 280 420 700 V
Maximum DC Blocking Voltage VDC 400 600 1000 V
Maximum Average Forward Current
0.375"(9.5mm) Lead Length Ta = 45 °C
Peak Forward Surge Current,
8.3ms Single half sine wave Superimposed
on rated load (JEDEC Method)
Maximum Peak Forward Voltage at IF = 1.0 Amp. VF1.3 V
Maximum DC Reverse Current Ta = 25 °CIR5.0 µA
at Rated DC Blocking Voltage Ta = 100 °CIR(H) 100 µA
Maximum Reverse Recovery Time ( Note 1 ) Trr 150 250 ns
Typical Junction Capacitance ( Note 2 ) CJ20 pf
Junction Temperature Range TJ - 65 to + 150 °C
Storage Temperature Range TSTG - 65 to + 150 °C
Notes :
( 1 ) Reverse Recovery Test Conditions : IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A.
( 2 ) Measured at 1.0 MHz and applied reverse voltage of 4.0 VDC
Page 1 of 2 Rev. 01 : Apr. 2, 2002
A
A
RATING
IFSM
IF(AV) 1.0
35
DO - 41
Dimensions in inches and ( millimeters )
1.00 (25.4)
MIN.
0.107 (2.7)
0.080 (2.0)
0.205 (5.2)
0.166 (4.2)
1.00 (25.4)
MIN.
0.034 (0.86)
0.028 (0.71)
RATING AND CHARACTERISTIC CURVES ( BA157 - BA159 )
FIG.1 - REVERSE RECOVERY TIME CHARACTERISTIC AND TEST CIRCUIT DIAGRAM
+
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.
FIG.2 - DERATING CURVE FOR OUTPUT FIG.3 - MAXIMUM NON-REPETITIVE PEAK
RECTIFIED CURRENT FORWARD SURGE CURRENT
0 25 50 75 100 125 150 175 1 2 4610 20 40 60 100
AMBIENT TEMPERATURE, ( °C) NUMBER OF CYCLES AT 60Hz
FIG.4 - TYPICAL FORWARD CHARACTERISTICS FIG.5 - TYPICAL REVERSE CHARACTERISTICS
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Page 2 of 2 Rev. 01 : Apr. 2, 2002
RESISTIVE OR INDUCTIVE LOAD
0.8
0.6
0.4
0.2
1.0
20 10
1.0
28
0
35
0
21
14
7
0.1
10
80
0.01 0.01
1.0
0.1
100 140020 40 60 120
PERCENT OF RATED REVERSE VOLTAGE, (%)
PEAK FORWARD SURGE
CURRENT, AMPERES
AVERAGE FORWARD OUTPUT
CURRENT, AMPERES
FORWARD CURRENT, AMPERES
REVERSE CURRENT, MICROAMPERES
TJ = 25 °C
TJ = 100 °C
TJ = 25 °C
Pulse Width = 300 µs
2% Duty Cycle
8.3 ms SINGLE HALF SINE WAVE
Ta = 50 °C
SET TIME BASE FOR 50-100 ns/cm
Trr
+ 0.5 A
0
- 0.25 A
- 1.0 A
1 cm
50 Vdc
(approx.)
OSCILLOSCOPE
( NOTE 1 )
1 Ω
50 Ω10 Ω
D.U.T. PULSE
GENERATOR
( NOTE 2 )
FORWARD VOLTAGE, VOLTS
