SMAJ5.0 thru SMAJ170CA
SURFACE MOUNT 500 Watt
Transient Voltage Suppressor
SCOTTSDALE DIVISION
DESCRIPTION
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-214AB or
DO-214AC. It is also available in a unidirectional configuration or as bidirectional
with a C or CA suffix part number. 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 higher and lower power demands and special applications.
IMPORTANT:
For the most current data, consult
MICROSEMI’s
website:
http://www.microsemi.com
PACKAGE
WWW .
Microsemi
.C
OM
DO-214AB or AC
(SMAJ)
FEATURES
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Selections for 5.0 to 170 volts standoff voltages (V
WM
)
Suppresses transients up to 500 watts @ 10/1000 µs
(see Figure 1)
Fast response
Optional 100%
screening for avionics grade
is
available by adding MA prefix to part number for added
100% temperature cycle -55
o
C to +125
o
C (10X) as well
as surge (3X) and 24 hours HTRB with post test V
Z
&
I
R
(in the operating direction for unidirectional or both
directions for bidirectional)
Options for screening in accordance with MIL-PRF-
19500 for JAN, JANTX, JANTXV, and JANS are
available by adding MQ, MX, MV, or MSP prefixes
respectively to part numbers.
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
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APPLICATIONS / BENEFITS
Economical surface mount
Available in Unidirectional or as Bidirectional
construction with a C or CA suffix
Protects sensitive components such as IC’s,
2
CMOS, Bipolar, BiCMOS, ECL, DTL, T L, 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:
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
Secondary lightning protection per IEC61000-4-5
with 12 Ohms source impedance:
Class 1: SMAJ5.0 to SMAJ30A or CA
Class 2: SMAJ5.0 to SMAJ16A or CA
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MAXIMUM RATINGS
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Peak Pulse Power dissipation at 25
º
C: 500 watts at
10/1000
µs
(also see Fig 1,2, and 3)
Impulse repetition rate (duty factor): 0.01%
t
clamping
(0 volts to
V
(BR)
min.): < 100 ps theoretical for
unidirectional and < 5 ns for bidirectional
Operating and Storage temperature: -65
º
C to +150
º
C
Thermal resistance: 15
º
C/W junction to lead or 80
º
C/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 T
L
= 75
o
C, or
1.56 watts at T
A
= 25
º
C when mounted on FR4 PC board
with recommended footprint
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
º
C for 10 s (maximum)
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MECHANICAL AND PACKAGING
CASE: Void-free transfer molded thermosetting
epoxy body meeting UL94V-0
TERMINALS: Gull-wing or C-bend (modified J-bend)
leads, Tin-Lead plated solderable per MIL-STD-750,
method 2026
POLARITY: Cathode indicated by band. No marking
on bi-directional devices
MARKING: Part number without SMA prefix (e.g.
5.0, 5.0A, 5.0CA, 36, 36A, 36CA, 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)
WEIGHT: 0.064 grams
See package dimension on last page
SMAJ5.0 thru SMAJ170CA
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Copyright
2002
6-01-2004 REV E
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
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