NEW PRODUCT
NEW PRODUCT
NEW PRODUCT
AVALANCHE ALTERNATOR RECTIFIER - AS3524 AND AS3528
PASSIVATED ANISOTROPIC RECTIFIER TECHNOLOGY
Mean Breakdown Voltage -
24 and 28 Volts
ED
T
*
CASE STYLE ASC
0.953(24.2)
0.937(23.8)
0.539(13.7)
0.524(13.3)
Peak Pulse Current -
65 Amperes
FEATURES
EN
AT
P
0.224(5.7)
0.208(4.3)
0.185(4.7)
0.169(4.3)
0.413(10.5) 0.342(8.7)
0.374(9.5) 0.327(8.3)
0.110(2.8)
0.094(2.4)
0.366(9.3)
0.343(8.7)
0.406(10.3)
0.382(9.7)
LEAD 1
0.205(5.2)
0.188(4.8)
0.098
(2.5)
MIN.
0.390(9.9)
0.374(9.5)
0.087(2.2)
0.071(1.8)
0.024(5.2)
0.023(.59)
¨
Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
¨
High temperature stability due to unique oxide
passivation
¨
Patented Passivated Anisotropic Rectifier
(PAR) construction
¨
Integrally molded heatsink provides
a very low thermal resistance
for maximum heat dissipation
¨
Low leakage current at T
J
=175¡C
¨
Low forward voltage drop
¨
Ideally suited for alternator rectification and load dump
protection
¨
High temperature soldering guaranteed:
260¡C for 10 seconds at terminals
0.197(5.0)
0.185(4.7)
0.205(5.2)
0.188(4.8)
MECHANICAL DATA
Case:
Molded plastic body, surface mount with heatsink
integrally mounted in the encapsulation
Terminals:
Plated, solderable per MIL-STD-750,
Method 2026
Polarity:
Unidirectional as marked
Mounting Position:
Any
Weight:
0.095 ounces, 2.68 grams
0.028(0.7)
0.012(0.3)
LEAD 2/METAL HEATSINK
Dimensions in inches and (millimeters)
*
Patent #Õs
4,980,315
5,166,769
5,278,094
For positive polarity use ÒPÓ.suffix, for negative polarity use ÒNÓ suffix
(Polarity refers to lead #1)
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25¡C ambient temperature unless otherwise specified.
SYMBOLS
AS3524
AS3528
UNITS
Maximum working peak stand-off voltage
Minimum reverse breakdown voltage at 100mA
Maximum reverse breakdown voltage at 100mA
Maximum clamping voltage for 10ms/10ms exponentially
decaying waveform at I
PP
=60A
Maximum average rectified forward current at T
C
=150¡C
Peak forward surge current, 8.3ms single half sine-wave
on rated load (JEDEC Method)
Maximum instantaneous forward voltage at 100A
(NOTE 1)
Non-repetitive peak reverse surge current for 10ms/10ms
exponentially decaying waveform
Maximum reverse leakage current at rated V
WM
Maximum thermal resistance junction to case
(NOTE 2)
Operating junction and storage temperature range
NOTES:
(1) Measured on a 300ms square pulse width
(2) Mounted on alternator heat sink
NOTICE:
Advanced product information is subject to change without notice
V
WM
V
(BR)
V
(BR)
V
C
I
(AV)
I
FSM
V
F
I
RSM
T
J
=25¡C
T
J
=175¡C
I
R
R
QJC
T
J
, T
STG
18.0
20.0
28.0
38.0
35.0
600.0
1.00
65.0
0.5
20.0
0.95
20.0
24.0
32.0
40.0
Volts
Volts
Volts
Volts
Amps
Amps
Volts
Amps
mA
¡C/W
¡C
-55 to +200
12/98
RATING AND CHARACTERISTIC CURVES AVALANCHE ALTERNATOR RECTIFIER - AS3524 AND AS3528
FIG. 2 - TYPICAL INSTANTANEOUS FORWARD
CHARACTERISTICS
INSTANTANEOUS FORWARD CUR-
RENT, AMPERES
FIG. 1 - FORWARD CURRENT DERATING CURVE
50
45
40
35
30
25
20
15
10
5.0
0
0
20
40
60 80 100 120 140 160 180 200
CASE TEMPERATURE, ¡C
100
175¡C
25¡C
FORWARD CURRENT,
AMPERES
10
1
0.1
0.01
0.35
0.45
0.55
0.95
0.75
0.85
0.65
FORWARD VOLTAGE, VOLTS
1.05
FIG. 3 - PULSE WAVEFORM
T
A
=25¡C
PULSE WIDTH (t
d
) is
DEFINED as the POINT
WHERE the PEAK CURRENT
DECAYS to 50% of I
PP
FIG. 4. - REVERSE POWER CAPABILITY
REVERSE SURGE POWER, WATTS
10,000
150
I
PPM
PEAK PULSE CURRENT %
t
r
=10ms
100
PEAK VALUE I
PPM
50
t
d
HALF VALUE - I
PP
2
0
0
5
10
15
20
25
t, TIME, ms
30
35
40
1,000
1
10
100
PULSE WIDTH (ms) - 1/2 I
PP
EXPONENTIAL WAVEFORM
FIG. 6 - TYPICAL REVERSE CHARACTERISTICS
100
FIG. 5 - LOAD DUMP POWER CHARACTERISTICS
(10ms EXPODENTIAL WAVEFORM)
3,000
INSTANTANEOUS REVERS CUR-
RENT, MICRO AMPERES
LOAD DUMP POWER, WATTS
200¡C
2,500
2,000
1,500
1,000
500
0
25
10
1
0.1
0.01
25¡C
175¡C
0.001
50
75
100
125
150
175
200
0.0001
5.0
20
35
50
65
80
95
TEMPERATURE, ¡C
FIG. 7 - TYPICAL TRANSIENT THERMAL IMPEDANCE
100
PERCENTAGE OF V
(BR)
, %
TRANSIENT THERMAL IMPEDANCE, ¡C/W
10
1
RQJC
0.1
0.01
0.01
0.1
1
10
100
PULSE WIDTH, sec.
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