SAC5.0 thru SAC50
500 WATT LOW CAPACITANCE
TRANSIENT VOLTAGE SUPPRESSOR
S C O T T S D A L E D I V I S I O N
DESCRIPTION
APPEARANCE
This SAC5.0 thru SAC50 transient voltage suppressor (TVS) series rated at
500 watts provides an added rectifier element as shown in Figure 4 to
achieve low capacitance in applications for higher speed data or signal
lines. The low capacitance rating of 30 pF may be used for protecting
higher frequency applications in inductive switching environments or
electrical systems involving secondary lightning effects per IEC61000-4-5
DO-41
as well as RTCA/DO-160D or ARINC 429 for airborne avionics.
If
bidirectional protection is needed, two SAC devices in anti-parallel
configuration are required as shown in Figure 6. With their very fast
response time, they also provide ESD and EFT protection per IEC61000-4-
2 and IEC61000-4-4 respectively.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES
APPLICATIONS / BENEFITS
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•
Unidirectional low-capacitance TVS series for
flexible thru-hole mounting (for bidirectional see
Figure 4)
•
•
Low Capacitance for data-line protection to 70 MHz
ESD and EFT protection per IEC61000-4-2 and
IEC61000-4-4 respectively
Suppresses transient up to 500 Watts Peak Pulse
•
Secondary lightning protection per IEC61000-4-5 with
42 Ohms source impedance:
Class 1: SAC5.0 to SAC50
Class 2: SAC5.0 to SAC45
Class 3: SAC5.0 to SAC22
Class 4: SAC5.0 to SAC10
Power @ 10/1000 µs
•
•
Improved performance in low capacitance of 30 pF
Economical plastic series in flexible axial-leaded
DO-41 package
•
Options for screening in accordance with MIL-PRF-
19500 for JAN, JANTX, JANTXV, and JANS are
also available by adding MQ, MX, MV, or MSP
prefixes respectively to part number, e.g.
MXSAC5.0, MVSAC18, etc.
•
Secondary lightning protection per IEC61000-4-5 with
12 Ohms source impedance
Class 1: SAC5.0 to SAC26
Class 2: SAC5.0 to SAC15
Class 3: SAC5.0 to SAC7.0
•
•
Also available in surface mount with SMAJ or
SMBJ prefix for part numbers (ex. SMAJSAC5.0)
UL94V-0 Flammability Classification
MAXIMUM RATINGS
MECHANICAL AND PACKAGING
•
•
•
•
Peak Pulse Power Dissipation at 25oC: 500 Watts @
•
•
CASE: Void Free Transfer Molded Thermosetting Plastic
(DO-41) meeting UL94V-0
10/1000 µs with repetition rate of 0.01% or less*
Steady State Power Dissipation* at TL = +75oC: 2.5 Watts
(Lead Length = 3/8”).
TERMINATIONS: Tin-lead plated and solderable per MIL-
STD-750 method 2026
•
•
•
•
POLARITY: Cathode indicated by band
MARKING: Part number and cathode band
WEIGHT: 0.7 Grams (Approx.)
Clamping Speed (0 volts to V(BR) Min.) less than 5
nanoseconds.
Operating and Storage Temperature: -65oC to +150oC.
See package dimensions on last page
* TVS devices are not typically used for dc power dissipation and are instead operated < VWM (rated standoff voltage) except for transients that briefly
drive the device into avalanche breakdown (VBR to VC region) of the TVS element. Also see Figures 5 and 6 for further protection details in rated peak
pulse power for unidirectional and bidirectional configurations respectively.
Copyright 2004
Microsemi
Page 1
4-26-2004 REV B
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
