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SM8A27 Datasheet(PDF) 1 Page - Vishay Siliconix

Part No. SM8A27
Description  Surface Mount Automotive Transient Voltage Suppressor
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Maker  VISHAY [Vishay Siliconix]
Homepage  http://www.vishay.com
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 1 page
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SM8A27
Vishay Semiconductors
formerly General Semiconductor
Document Number 88386
www.vishay.com
01-Aug-02
1
New Product
Surface Mount Automotive Transient Voltage Suppressor
Zener Voltage 27V Peak Pulse Current 130A(10/10,000
µs)
Peak Pulse Power 6600W (10/1,000
µs)
0.093(2.4)
0.116(3.0)
0.059(1.5)
0.098(2.5)
0.098(2.5)
0.138(3.5)
0.366(9.3)
0.343(8.7)
0.406(10.3)
0.382(9.7)
0.342(8.7)
0.327(8.3)
0.413(10.5)
0.374(9.5)
0.539(13.7)
0.524(13.3)
LEAD 2/METAL HEATSINK
0.020(0.5)
0.028(0.7)
0.016 (0.4) Min.
0.197(5.0)
0.185(4.7)
LEAD 1
0.628(16.0)
0.592(15.0)
Patented*
*Patent #’s:
4,980,315
5,166,769
5,278,095
Features
• Ideally suited for load dump protection
• Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
• High temperature stability due to unique oxide passiva-
tion and patented PAR
® construction
• Integrally molded heatsink provides a very low thermal
resistance for maximum heat dissipation
• Low leakage current at TJ = 175°C
• High temperature soldering guaranteed:
260°C for 10 seconds at terminals
• Meets ISO7637-2 surge spec.
• Low forward voltage drop
Maximum Ratings and Thermal Characteristics (TC = 25°C unless otherwise noted)
Parameter
Symbol
Value
Unit
Steady state power dissipation
PD
8.0
W
Non-repetitive peak reverse surge current for 10
µs/10ms
exponentially decaying waveform
IRSM
130
A
Maximum working stand-off voltage
VWM
22.0
V
Peak forward surge current 8.3ms single half sine-wave
IFSM
700
A
Typical thermal resistance junction to case
R
θJC
0.90
°C/W
Operating junction and storage temperature range
TJ, TSTG
–55 to +175
°C
0.413(10.5)
0.374(9.5)
0.366(9.3)
0.343(8.7)
0.606(15.4)
0.583(14.8)
0.150(3.8)
0.126(3.2)
0.091(2.3)
0.067(1.7)
0.116(3.0)
0.093(2.4)
Mounting Pad Layout
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: Heatsink is anode
Mounting Position: Any
Weight: 0.091 oz., 2.58 g
Packaging codes/options:
2D/750 per 13" Reel (16mm Tape),
anode towards sprocket hole, 4.5K/box
2E/750 per 13" Reel (16mm Tape),
cathode towards sprocket hole, 4.5K/box
DO-218AB
Dimensions in
inches and (millimeters)



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