SMAJ5.0 thru SMAJ170CA, e3
SURFACE MOUNT 500 Watt
Transient Voltage Suppressor
S C O T T S D A L E D I V I S I O N
DESCRIPTION
PACKAGE
This SMAJ5.0-170A series of surface mount 500 W Transient Voltage
Suppressors (TVSs) protects a variety of voltage-sensitive components from
destruction or degradation. The package outline is similar to the DO-214AC or
DO-214BA. It is also available in a unidirectional configuration or as bidirectional
with a C or CA suffix part number as well as RoHS Compliant with an “e3”suffix.
Their response time is virtually instantaneous. As a result, they can be used for
protection from ESD or EFT per IEC61000-4-2 and IEC61000-4-4, or for
inductive switching environments and induced RF protection. They can also
protect from secondary lightning effects per IEC61000-4-5 and class levels
defined herein. Microsemi also offers numerous other TVS products to meet
DO-214AC or BA
(SMAJ)
higher and lower power demands and special applications.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES
APPLICATIONS / BENEFITS
•
•
Selections for 5.0 to 170 volts standoff voltages (VWM
)
•
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Economical surface mount
Suppresses transients up to 500 watts @ 10/1000 µs (see
Figure 1) with fast response
Available in Unidirectional or as Bidirectional
construction with a C or CA suffix
•
Optional 100% screening for avionics grade is available
by adding MA prefix to part number for added 100%
temperature cycle -55oC to +125oC (10X) as well as surge
(3X) and 24 hours HTRB with post test VZ & IR (in the
operating direction for unidirectional or both directions for
bidirectional)
•
Protects sensitive components such as IC’s,
CMOS, Bipolar, BiCMOS, ECL, DTL, T2L, etc.
•
•
Protection from switching transients & induced RF
Compliant to IEC61000-4-2 and IEC61000-4-4 for
ESD and EFT protection respectively
•
•
Secondary lightning protection per IEC61000-4-5
with 42 Ohms source impedance:
•
Options for screening in accordance with MIL-PRF-19500
for JANTX are available by adding MX prefix to the part
number.
Class 1: SMAJ5.0 to SMAJ100A or CA
Class 2: SMAJ5.0 to SMAJ51A or CA
Class 3: SMAJ5.0 to SMAJ24A or CA
Class 4: SMAJ5.0 to SMAJ12A or CA
•
Axial-lead equivalent packages for thru-hole mounting
available as P5KE6.8 to P5KE170CA (consult factory for
other surface mount options)
•
•
Moisture classification is Level 1 with no dry pack required
per IPC/JEDEC J-STD-020B
Secondary lightning protection per IEC61000-4-5
with 12 Ohms source impedance:
RoHS Compliant devices available by adding an “e3” suffix
Class 1: SMAJ5.0 to SMAJ30A or CA
Class 2: SMAJ5.0 to SMAJ16A or CA
MAXIMUM RATINGS
MECHANICAL AND PACKAGING
•
Peak Pulse Power dissipation at 25ºC: 500 watts at
•
CASE: Void-free transfer molded thermosetting
epoxy body meeting UL94V-0
10/1000 μs (also see Fig 1,2, and 3)
•
•
Impulse repetition rate (duty factor): 0.01%
•
TERMINALS: C-bend (modified J-bend) leads Tin-
Lead or RoHS compliant annealed matte-Tin plating
solderable per MIL-STD-750, method 2026
tclamping (0 volts to V(BR) min.): < 100 ps theoretical for
unidirectional and < 5 ns for bidirectional
Operating and Storage temperature: -65ºC to +150ºC
Thermal resistance: 15 ºC/W junction to lead or 80ºC/W
junction to ambient when mounted on FR4 PC board (1oz
Cu) with recommended footprint (see last page)
Steady-State Power dissipation: 5 watts at TL = 75oC, or
1.56 watts at TA = 25ºC when mounted on FR4 PC board
with recommended footprint
•
•
•
POLARITY: Cathode indicated by band. No
marking on bi-directional devices
•
•
MARKING: Part number without SMA prefix (e.g.
5.0, 5.0A, 5.0Ae3, 5.0CA, 36A, 36CA, 36CAe3, etc.)
TAPE & REEL option: Standard per EIA-481-1-A
with 12 mm tape, 750 per 7 inch reel or 2500 per 13
inch reel (add “TR” suffix to part number)
•
•
•
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WEIGHT: 0.064 grams
Forward Surge Current at 25ºC: 40 amps peak, 8.3 ms
half-sine wave. Maximum voltage of 3.50 V
(unidirectional only)
Solder temperatures: 260 ºC for 10 s (maximum)
See package dimension on last page
Copyright © 2009
MSC0270A, REV L, 5-24-2009
Microsemi
Page 1
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
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