AVALANCHE ALTERNATOR RECTIFIER - AS3524 AND AS3528
PASSIVATED ANISOTROPIC RECTIFIER TECHNOLOGY
Mean Breakdown Voltage - 24 and 28 Volts Peak Pulse Current - 65 Amperes
FEATURES
¨ 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 TJ=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
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
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25¡C ambient temperature unless otherwise specified.
SYMBOLS AS3524 AS3528 UNITS
Maximum working peak stand-off voltage VWM 18.0 20.0 Volts
Minimum reverse breakdown voltage at 100mA V(BR) 20.0 24.0 Volts
Maximum reverse breakdown voltage at 100mA V(BR) 28.0 32.0 Volts
Maximum clamping voltage for 10ms/10ms exponentially
decaying waveform at IPP=60A
VC 38.0 40.0 Volts
Maximum average rectified forward current at TC=150¡C I(AV) 35.0 Amps
Peak forward surge current, 8.3ms single half sine-wave
on rated load (JEDEC Method)
IFSM 600.0 Amps
Maximum instantaneous forward voltage at 100A (NOTE 1) VF 1.00 Volts
Non-repetitive peak reverse surge current for 10ms/10ms
exponentially decaying waveform
IRSM 65.0 Amps
Maximum reverse leakage current at rated VWM TJ=25¡C 0.5
TJ=175¡C
IR
20.0
mA
Maximum thermal resistance junction to case (NOTE 2) RQJC 0.95 ¡C/W
Operating junction and storage temperature range TJ, TSTG -55 to +200 ¡C
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
12/98
CASE STYLE ASC
0.953(24.2)
0.937(23.8)
0.224(5.7)
0.208(4.3)
0.205(5.2)
0.188(4.8)
0.185(4.7)
0.169(4.3)
0.110(2.8)
0.094(2.4)
0.366(9.3)
0.343(8.7)
0.406(10.3)
0.382(9.7)
0.390(9.9)
0.374(9.5)
0.024(5.2)
0.023(.59)
0.205(5.2)
0.188(4.8)
0.087(2.2)
0.071(1.8)
0.342(8.7)
0.327(8.3)
0.098
(2.5)
MIN.
0.539(13.7)
0.524(13.3)
LEAD 2/METAL HEATSINK
LEAD 1

0.413(10.5)
0.374(9.5)
0.197(5.0)
0.185(4.7)
0.028(0.7)
0.012(0.3)
P
A
TENTED*
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)
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