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1 AMP FAST RECOVERY SILICON RECTIFIERS
BA157 THRU BA159
TECHNICAL SPECIFICATION
FEATURES
Fast recovery times for high efficiency
Low cost construction utilizing void - free
moulded plastic technique
Plastic package has Underwriters Laboratories
Flammability Classification 94V-0
High surge current capability
Low leakage
High temperature soldering capability
250°C/10 seconds/9.5mm (.375in.) lead length at
2.3kg (5lb) tension
Easily cleaned with Freon, Alcohol, Chlorothene
and other similar solvents
MECHANICAL DATA
Case
Terminals
Polarity
Mounting Position
Weight
: JEDEC DO-41, moulded plastic.
: Plated axial leads, solderable
per MIL-STD-202, Method 208.
: Colour band denotes cathode end.
: Any
: 0.3 grams (0.012 ounce)
VOLTAGE
400 to 1000 Volts
DIMENSIONS
25.4 (1.0)
min.
5.2 (.205)
4.1 (.160)
25.4 (1.0)
min.
CURRENT
1.0 Amp
- millimeters (inches)
DO-41
2.7 (.107)
2.0 (.080)
Cathode Band
.86 (.034)
.71 (.028)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings 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%.
Symbols
Maximum Recurrent Peak Reverse Voltage
Maximum RMS Voltage
Maximum DC Blocking Voltage
Maximum Average Forward Rectified Current
9.5mm (.375in.) Lead Length at T
Peak Forward Surge Current, 8.3 ms single half
sine - wave superimposed on rated load
Maximum Instantaneous Forward Voltage at 1.0A
Maximum Reverse Current at Rated
DC Blocking Voltage
Maximum Reverse Recovery Time (see Note 3)
Typical Junction Capacitance (see Note 1)
Typical Thermal Resistance (see Note 2)
Operating Temperature Range
Storage Temperature Range
Notes :
1. Measured at 1.0 MHz and applied reverse voltage of 4.0 Volts
2. Thermal Resistance from Junction to Ambient
3. Test Conditions : IF = 0.5A, IR = 1.0A recovery to 0.25A
= 75°C
A
= 25°C
T
A
TA = 100°C
V
RRM
V
RMS
V
DC
I
F(AV)
I
FSM
V
F
I
R
t
rr
C
J
R
THja
T
J
T
STG
BA157
400
280
400
150
BA158
600
420
600
1.0
30
1.2
5.0
100
250 500
15
50
- 50 to + 175
- 50 to + 175
BA159
1000
700
1000
Units
V
V
V
A
A
V
µA
µA
nS
pF
°C/W
°C
°C
Reformatted by Anglia 9851
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BA157 THRU BA159
RATING AND CHARACTERISTIC CURVES
FIG. 1 - FORWARD CURRENT DERATING CURVE
1.0
0.8
0.6
0.4
0.2
AVERAGE FORWARD RECTIFIED
CURRENT, AMPERES
L
5mm x 5mm Cu Leafs
9.5mm Lead Length
0
25 50 75 100 125 150 175 200
0
AMBIENT TEMPERATURE, °C
FIG. 3 - TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS
100
30
10
3.0
1.0
0.3
0.1
TJ = 25°C
Pulse width = 300µs
2% duty cycle
FIG. 2 - MAXIMUM NON-REPETITIVE PEAK
FORWARD SURGE CURRENT
30
25
20
15
TA = 75°C
10
PEAK FORWARD SURGE
CURRENT, AMPERES
5
8.3ms single half sine-wave
(JEDEC) method
1
2 5 20 50
10
NUMBER OF CYCLES AT 60Hz
FIG. 4 - TYPICAL JUNCTION CAPACITANCE
15
10
5
T = 25°C
J
f = 1MHz
V
= 50mVp-p
SIG
1 10 100
2 5 20 50
REVERSE VOLTAGE, VOLTS
CAPACITANCE, pF
2
1
.1 .2 .5
100
.03
INSTANTANEOUS FORWARD CURRENT,
.01
AMPERES
0.4 0.6 0.8 1.0 1.2 1.4
FIG. 5 - TEST CIRCUIT DIAGRAM AND REVERSE RECOVERY TIME CHARACTERISTICS
NOTES 1 Rise Time = 7ns max, Input Impedance = 1 megaohm 22pF
1.6
INSTANTANEOUS FORWARD
VOLTAGE, VOLTS
10ý NONINDUCTIVE50ý NONINDUCTIVE
DUT
25Vdc
(approx)
1ý NON
INDUCTIVE
2 Rise Time = 10ns max, Source Impedance = 50 ohms
OSCILLOSCOPE
(Note 1)
(–)
PULSE
GENERATO
R (Note 2)
(+)
+0.5A
-0.25A
-1.0A
t
rr
0
1cm SET TIME BASE
FOR 50/100ns/cm
Reformatted by Anglia 9851
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