SMAJ530 & SMAJ550
Vishay General Semiconductor
Surface Mount T
RANS
Z
ORB
®
Transient Voltage Suppressors
FEATURES
• Glass passivated chip junction
• Available in uni-directional polarity only
• Excellent clamping capability
• Very fast response time
• Low incremental surge resistance
• Meets MSL level 1, per J-STD-020, LF maximum
peak of 260 °C
• Solder dip 260 °C, 40 s
• Component in accordance to RoHS 2002/95/EC
and WEEE 2002/96/EC
APPLICATION NOTES
• Respect thermal resistance (PCB Layout) - as the
temperature coefficient also contributes to the
clamping voltage
• Select minimum breakdown voltage, so you get
acceptable power dissipation and PCB tie point
temperature
• Devices with higher breakdown voltage will have a
shorter conduction time and will dissipate less
power
• Clamping voltage is influenced by internal resistance
- design approximation is 7 V per 100 mA slope
• Keep temperature of TVS lower than TOPSwitch
®
as a recommendation
• Maximum current is determined by the maximum
T
J
and can be higher than 300 mA
• Contact supplier for different clamping voltage/
current arrangements
• Minimum breakdown voltage can be customized for
other applications. Contact supplier
• TOPSwitch is a registered trademark of Power
Integrations, Inc.
DO-214AC (SMA)
PRIMARY CHARACTERISTICS
V
BR
P
PPM
P
D
I
FSM
T
J
max.
530 V, 550 V
300 W
2.5 W
40 A
150 °C
TYPICAL APPLICATIONS
Use in sensitive electronics protection against voltage
transients induced by inductive load switching and
lighting on ICs, MOSFET, signal lines of sensor units
for consumer, computer, industrial, automotive and
telecommunication.
MECHANICAL DATA
Case:
DO-214AC (SMA)
Molding compound meets UL 94 V-0 flammability
rating
Base P/N-E3 - RoHS compliant, commercial grade
Base P/NHE3 - RoHS compliant, high reliability/
automotive grade (AEC Q101 qualified)
Terminals:
Matte tin plated leads, solderable per
J-STD-002 and JESD22-B102
E3 suffix meets JESD 201 class 1A whisker test, HE3
suffix meets JESD 201 class 2 whisker test
Polarity:
Color band denotes cathode end
MAXIMUM RATINGS
(T
A
= 25 °C unless otherwise noted)
PARAMETER
Device marking code
Power dissipation on infinite heatsink
(3)
Peak pulse power dissipation
(1)(2)(4)
(Fig. 1)
Stand-off voltage
Operating junction and storage temperature range
P
D
P
PPM
V
WM
T
J
, T
STG
477
SYMBOL
SMAJ530
HD
2.5
300
495
SMAJ550
SB
W
W
V
°C
UNIT
- 55 to + 150
Notes:
(1) Non repetitive current pulse per Fig. 3 and derated above 25 °C per Fig. 2
(2) Mounted on 5.0 mm
2
copper pads to each terminal
(3) Lead temperature at T
L
= 75 °C
(4) Peak pulse power waveform is 10/1000 µs
Document Number: 88391
Revision: 21-Oct-08
For technical questions within your region, please contact one of the following:
PDD-Americas@vishay.com, PDD-Asia@vishay.com, PDD-Europe@vishay.com
www.vishay.com
1
SMAJ530 & SMAJ550
Vishay General Semiconductor
ELECTRICAL CHARACTERISTICS
(T
A
= 25 °C unless otherwise noted)
PARAMETER
Minimum breakdown voltage
Max. clamping voltage
Maximum DC reverse leakage current
Typical temperature coefficient
Typical capacitance
(1)
Note:
(1) Measured at 1 MHz
TEST CONDITIONS
100 µA
400 mA, 10/1000 µs-waveform
V
WM
of V
BR
0V
200 V
C
J
C
J
SYMBOL
V
BR
V
C
I
D
SMAJ530
530
760
1.0
650
90
7.5
SMAJ550
550
UNIT
V
V
µA
mV/°C
pF
pF
THERMAL CHARACTERISTICS
(T
A
= 25 °C unless otherwise noted)
PARAMETER
Typical thermal resistance, junction to lead
Typical thermal resistance, junction to ambient
(1)
Note:
(1) Mounted on minimum recommended pad layout
SYMBOL
R
θJL
R
θJA
SMAJ530
30
120
SMAJ550
UNIT
°C/W
°C/W
ORDERING INFORMATION
(Example)
PREFERRED P/N
SMAJ530-E3/61
SMAJ530-E3/5A
SMAJ530HE3/61
(1)
SMAJ530HE3/5A
(1)
Note:
(1) Automotive grade AEC Q101 qualified
UNIT WEIGHT (g)
0.064
0.064
0.064
0.064
PREFERRED PACKAGE CODE
61
5A
61
5A
BASE QUANTITY
1800
7500
1800
7500
DELIVERY MODE
7" diameter plastic tape and reel
13" diameter plastic tape and reel
7" diameter plastic tape and reel
13" diameter plastic tape and reel
RATINGS AND CHARACTERISTICS CURVES
(T
A
= 25
°C
unless otherwise noted)
Non-Repetitive
Pulse
Waveform
shown in Fig. 3
T
A
= 25 °C
10
Peak Pulse Power (P
PP
) or Current (I
PP
)
Derating in Percentage, %
100
100
P
PPM
- Peak Pulse Power (kW)
75
50
1
25
0.1
0.1
µs
1.0
µs
10
µs
100
µs
1.0 ms
10 ms
0
0
25
50
75
100
125
150
175
200
t
d
- Pulse
Width
(s)
T
J
- Initial Temperature (°C)
Figure 1. Peak Pulse Power Rating Curve
Figure 2. Pulse Power or Current vs. Initial Junction Temperature
www.vishay.com
2
For technical questions within your region, please contact one of the following:
PDD-Americas@vishay.com, PDD-Asia@vishay.com, PDD-Europe@vishay.com
Document Number: 88391
Revision: 21-Oct-08
SMAJ530 & SMAJ550
Vishay General Semiconductor
150
I
PPM
- Peak Pulse Current, % I
RSM
t
r
= 10
µs
Peak
Value
I
PPM
T
J
= 25 °C
Pulse
Width
(t
d
)
is defined as the Point
where
the Peak Current
decays to 50 % of I
PPM
100
Half
Value
- I
PP
I
PPM
2
50
10/1000
µs Waveform
as defined
by
R.E.A.
t
d
0
0
1.0
2.0
3.0
4.0
t - Time (ms)
Figure 3. Pulse Waveform
PACKAGE OUTLINE DIMENSIONS
in inches (millimeters)
DO-214AC (SMA)
Cathode Band
Mounting Pad Layout
0.066 (1.68)
MIN.
0.074 (1.88)
MAX.
0.065 (1.65)
0.049 (1.25)
0.110 (2.79)
0.100 (2.54)
0.177 (4.50)
0.157 (3.99)
0.012 (0.305)
0.006 (0.152)
0.060 (1.52)
MIN.
0.208 (5.28)
REF.
0.090 (2.29)
0.078 (1.98)
0.060 (1.52)
0.030 (0.76)
0.008 (0.203)
0 (0)
0.208 (5.28)
0.194 (4.93)
Document Number: 88391
Revision: 21-Oct-08
For technical questions within your region, please contact one of the following:
PDD-Americas@vishay.com, PDD-Asia@vishay.com, PDD-Europe@vishay.com
www.vishay.com
3
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.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“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.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical
requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements
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
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
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
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk and agree
to fully indemnify and hold Vishay and its distributors harmless from and against any and all claims, liabilities, expenses and
damages arising or resulting in connection with such use or sale, including attorneys fees, even if such claim alleges that Vishay
or its distributor was negligent regarding the design or manufacture of the part. Please contact authorized Vishay personnel to
obtain written terms and conditions regarding products designed for such applications.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by
any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.
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.
Revision: 12-Mar-12
1
Document Number: 91000
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