SM8A27
www.vishay.com
Vishay General Semiconductor
Surface Mount PAR
®
Transient Voltage Suppressors
High Temperature Stability and High Reliability Conditions
FEATURES
• Junction passivation optimized design passivated
anisotropic rectifier technology
• T
J
= 175 °C capability suitable for high reliability
and automotive requirement
• Low leakage current
• Low forward voltage drop
• High surge capability
• Meets ISO7637-2 surge specification
• Meets MSL level 1, per J-STD-020, LF maximum peak of
245 °C
• AEC-Q101 qualified
• Compliant to RoHS Directive 2002/95/EC and in
accordance to WEEE 2002/96/EC
DO-218AB
PRIMARY CHARACTERISTICS
V
BR
P
PPM
(10 x 1000 μs)
P
D
I
RSM
I
FSM
T
J
max.
27 V
6600 W
8W
130 A
700 A
175 °C
TYPICAL APPLICATIONS
Use in sensitive electronics protection against voltage
transients induced by inductive load switching and lighting,
especially for automotive load dump protection application.
MECHANICAL DATA
Case:
DO-218AB
Molding compound meets UL 94 V-0 flammability rating
Base P/NHE3 - RoHS compliant, AEC-Q101 qualified
Terminals:
Matte tin plated leads, solderable
J-STD-002 and JESD 22-B102
HE3 suffix meets JESD 201 class 2 whisker test
Polarity:
Heatsink is anode
per
MAXIMUM RATINGS
(T
C
= 25 °C unless otherwise noted)
PARAMETER
Peak pulse power dissipation with 10/1000 μs waveform
Power dissipation on infinite heatsink at T
C
= 25 °C (fig. 1)
Non-repetitive peak reverse surge current for 10 μs/10 ms exponentially
decaying waveform
Maximum working stand-off voltage
Peak forward surge current 8.3 ms single half sine-wave
Operating junction and storage temperature range
SYMBOL
P
PPM
P
D
I
RSM
V
WM
I
FSM
T
J
, T
STG
VALUE
6600
8.0
130
22.0
700
- 55 to + 175
UNIT
W
W
A
V
A
°C
Revision: 14-Sep-11
Document Number: 88386
1
For technical questions within your region:
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
SM8A27
www.vishay.com
Vishay General Semiconductor
ELECTRICAL CHARACTERISTICS
(T
C
= 25 °C unless otherwise noted)
PARAMETER
Reverse Zener voltage
Zener voltage temperature coefficient
Clamping voltage for 10 μs/10 ms
exponentially decaying waveform
Instantaneous forward voltage
TEST CONDITIONS
I
Z
= 10 mA
I
Z
= 10 mA
I
PP
= 75 A
I
F
= 6.0 A
I
F
= 100 A
Rated V
WM
T
J
= 25 °C
T
J
= 175 °C
SYMBOL
V
Z
V
ZTC
V
C
V
F (1)
MIN.
24.0
-
-
-
-
-
-
TYP.
-
-
-
-
0.93
-
-
MAX.
30.0
36
40.0
0.98
-
1.0
50.0
UNIT
V
mV/°C
V
V
Reverse leakage current
I
R
μA
Note
(1)
Measured on a 300 μs square pulse width
THERMAL CHARACTERISTICS
(T
C
= 25 °C unless otherwise noted)
PARAMETER
Typical thermal resistance, junction to case
SYMBOL
R
JC
VALUE
0.90
UNIT
°C/W
ORDERING INFORMATION
(Example)
PREFERRED P/N
SM8A27HE3/2D
(1)
Note
(1)
AEC-Q101 qualified
UNIT WEIGHT (g)
2.605
PREFERRED PACKAGE CODE
2D
BASE QUANTITY
750
DELIVERY MODE
13" diameter plastic tape and reel,
anode towards the sprocket hole
RATINGS AND CHARACTERISTICS CURVES
(T
A
= 25 °C unless otherwise noted)
8.0
6000
5000
Power Dissipation (W)
6.0
Load Dump Power (W)
4000
3000
2000
4.0
2.0
1000
0
0
50
100
150
200
25
50
75
100
125
150
175
0
Case Temperature (°C)
Case Temperature (°C)
Fig. 1 - Power Derating Curve
Fig. 2 - Load Dump Power Characteristics
(10 ms Exponential Waveform)
Revision: 14-Sep-11
Document Number: 88386
2
For technical questions within your region:
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
SM8A27
www.vishay.com
Vishay General Semiconductor
100
150
Instantaneous Reverse Current (μA)
t
r
= 10 μs
Peak Value
I
PPM
Input Peak Pulse Current (%)
T
J
= 25 °C
Pulse Width (t
d
) is
Defined as the Point
Where the Peak Current
Decays to 50 % of I
PPM
10
T
J
= 175 °C
1
100
Half Value - I
PP
I
PPM
2
50
0.1
0.01
T
J
= 25 °C
0.001
0.0001
t
d
0
0
10
20
30
40
5
20
35
50
65
80
95
t - Time (ms)
Percentage of V
BR
(%)
Fig. 3 - Pulse Waveform
Fig. 6 - Typical Reverse Characteristics
10 000
100
Transient Thermal Impedance (°C/W)
Reverse
Surge
Power (W)
R
θJA
10
1
R
θJC
0.1
1000
10
100
0.01
0.01
0.1
1
10
100
Pulse Width (ms) - ½ I
PP
Exponential Waveform
t - Pulse Width (s)
Fig. 4 - Reverse Power Capability
Fig. 7 - Typical Transient Thermal Impedance
100
Instantaneous Forward Current (A)
T
J
= 150 °C
10
T
J
= 25 °C
1.0
0.1
0.01
0.35
0.45
0.55
0.65
0.75
0.85
0.95
Instantaneous Forward Voltage (V)
Fig. 5 - Typical Instantaneous Forward Characteristics
Revision: 14-Sep-11
Document Number: 88386
3
For technical questions within your region:
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
SM8A27
www.vishay.com
PACKAGE OUTLINE DIMENSIONS
in inches (millimeters)
DO-218AB
0.628 (16.0)
0.592 (15.0)
0.539 (13.7)
0.524 (13.3)
0.116 (3.0)
0.093 (2.4)
0.413 (10.5) 0.342 (8.7)
0.374 (9.5) 0.327 (8.3)
Vishay General Semiconductor
Mounting Pad Layout
0.150 (3.8)
0.126 (3.2)
0.091 (2.3)
0.067 (1.7)
0.413 (10.5)
0.374 (9.5)
0.116 (3.0)
0.093 (2.4)
0.366 (9.3)
0.343 (8.7)
0.406 (10.3)
0.382 (9.7)
0.197 (5.0)
0.185 (4.7)
0.016 (0.4) MIN.
Lead 2/Metal Heatsink
Lead 1
0.366 (9.3)
0.343 (8.7)
0.606 (15.4)
0.583 (14.8)
0.138 (3.5)
0.098 (2.5)
0.098 (2.5)
0.059 (1.5)
0.028 (0.7)
0.020 (0.5)
Revision: 14-Sep-11
Document Number: 88386
4
For technical questions within your region:
DiodesAmericas@vishay.com, DiodesAsia@vishay.com, DiodesEurope@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
Legal Disclaimer Notice
www.vishay.com
Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
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“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
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the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
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Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical
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about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular
product with the properties described in the product specification is suitable for use in a particular application. Parameters
provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All
operating parameters, including typical parameters, must be validated for each customer application by the customer’s
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including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
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Material Category Policy
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the
definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council
of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment
(EEE) - recast, unless otherwise specified as non-compliant.
Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free
requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference
to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21
conform to JEDEC JS709A standards.
Revision: 02-Oct-12
1
Document Number: 91000
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