SMAJ5.0 thru SMAJ170CA
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-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
DO-214AB or AC
(SMAJ)
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
FEATURES
APPLICATIONS / BENEFITS
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Economical surface mount
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Protects sensitive components such as IC’s,
CMOS, Bipolar, BiCMOS, ECL, DTL, T2L, etc.
Available in Unidirectional or as Bidirectional
construction with a C or CA suffix
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Protection from switching transients & induced RF
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Selections for 5.0 to 170 volts standoff voltages (VWM)
Compliant to IEC61000-4-2 and IEC61000-4-4 for
ESD and EFT protection respectively
Suppresses transients up to 500 watts @ 10/1000 µs
(see Figure 1)
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Secondary lightning protection per IEC61000-4-5
with 42 Ohms source impedance:
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Fast response
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
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)
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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
Moisture classification is Level 1 with no dry pack
required per IPC/JEDEC J-STD-020B
MAXIMUM RATINGS
MECHANICAL AND PACKAGING
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Peak Pulse Power dissipation at 25ºC: 500 watts at
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CASE: Void-free transfer molded thermosetting
10/1000 µs (also see Fig 1,2, and 3)
epoxy body meeting UL94V-0
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Impulse repetition rate (duty factor): 0.01%
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TERMINALS: Gull-wing or C-bend (modified J-bend)
leads, Tin-Lead plated solderable per MIL-STD-750,
method 2026
t
clamping (0 volts to V(BR) min.): < 100 ps theoretical for
unidirectional and < 5 ns for bidirectional
Operating and Storage temperature: -65ºC to +150ºC
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POLARITY: Cathode indicated by band. No marking
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on bi-directional devices
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)
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
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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
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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)
Copyright 2002
Microsemi
Page 1
MSCXXXX.PDF 10-14-2003 REV D
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503