SM8A27 Vishay Semiconductors, SM8A27 Datasheet

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SM8A27

Manufacturer Part Number
SM8A27
Description
Manufacturer
Vishay Semiconductors
Datasheet

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Document Number 88386
01-Aug-02
Features
• Ideally suited for load dump protection
• Plastic package has Underwriters Laboratory
• High temperature stability due to unique oxide passiva-
• Integrally molded heatsink provides a very low thermal
• Low leakage current at T
• High temperature soldering guaranteed:
• Meets ISO7637-2 surge spec.
• Low forward voltage drop
Maximum Ratings and Thermal Characteristics
Parameter
Steady state power dissipation
Non-repetitive peak reverse surge current for 10 s/10ms
exponentially decaying waveform
Maximum working stand-off voltage
Peak forward surge current 8.3ms single half sine-wave
Typical thermal resistance junction to case
Operating junction and storage temperature range
0.413(10.5)
0.374(9.5)
Flammability Classification 94V-0
tion and patented PAR
resistance for maximum heat dissipation
260°C for 10 seconds at terminals
0.197(5.0)
0.185(4.7)
0.016 (0.4) Min.
0.342(8.7)
0.327(8.3)
Surface Mount Automotive Transient Voltage Suppressor
LEAD 2/METAL HEATSINK
DO-218AB
0.406(10.3)
0.382(9.7)
®
0.366(9.3)
0.343(8.7)
construction
0.539(13.7)
0.524(13.3)
J
0.592(15.0)
0.628(16.0)
= 175°C
LEAD 1
0.093(2.4)
0.116(3.0)
0.138(3.5)
0.098(2.5)
0.020(0.5)
0.059(1.5)
inches and (millimeters)
0.028(0.7)
0.098(2.5)
New Product
Dimensions in
T
Symbol
Zener Voltage 27V Peak Pulse Current 130A(10/10,000 s)
J
I
V
R
I
, T
RSM
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:
FSM
P
WM
D
JC
STG
2D/750 per 13" Reel (16mm Tape),
2E/750 per 13" Reel (16mm Tape),
0.413(10.5)
0.374(9.5)
cathode towards sprocket hole, 4.5K/box
anode towards sprocket hole, 4.5K/box
(T
C
*
4,980,315
5,166,769
5,278,095
= 25°C unless otherwise noted)
Patent #’s:
Mounting Pad Layout
–55 to +175
Peak Pulse Power 6600W (10/1,000 s)
0.366(9.3)
0.343(8.7)
Value
Vishay Semiconductors
22.0
0.90
formerly General Semiconductor
130
700
8.0
0.606(15.4)
0.583(14.8)
0.150(3.8)
0.126(3.2)
SM8A27
www.vishay.com
°C/W
Unit
°C
W
A
V
A
0.091(2.3)
0.067(1.7)
0.116(3.0)
0.093(2.4)
1

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SM8A27 Summary of contents

Page 1

... Reel (16mm Tape), cathode towards sprocket hole, 4.5K/box Symbol RSM FSM STG SM8A27 Vishay Semiconductors formerly General Semiconductor Peak Pulse Power 6600W (10/1,000 s) Mounting Pad Layout 0.091(2.3) 0.067(1.7) 0.116(3.0) 0.093(2.4) 0.150(3.8) 0.366(9.3) 0.126(3.2) 0.343(8.7) 0.606(15.4) 0.583(14.8) * Patent #’s: ...

Page 2

... SM8A27 Vishay Semiconductors formerly General Semiconductor Electrical Characteristics Parameter Reverse zener voltage at 10mA Zener voltage temperature coefficient at I Clamping voltage for 10 s/10ms exponentially decaying waveform 75A PP (1) Instantaneous forward voltage Reverse leakage current at rated V WM Notes: (1) Measured on a 300 s square pulse width ...

Page 3

... Instantaneous Forward Voltage (V) 100 10 1 0.1 0.01 0.01 Document Number 88386 01-Aug-02 100 10 1.0 0 0.01 10 –3 10 –4 0.75 0.85 0.95 Typical Transient Thermal Impedance 0 – Pulse Width (sec.) Vishay Semiconductors formerly General Semiconductor Typical Reverse Characteristics T = 175 Percentage of V (%) (BR SM8A27 80 95 100 www.vishay.com 3 ...

Page 4

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