SAC5.0 thru SAC50
WWW.Microsemi .COM
500 WATT LOW CAPACITANCE
TRANSIENT VOLTAGE SUPPRESSOR
SCOTTSDALE DIVISION
SAC5.0 thru SAC50
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
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.
DO-41
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES APPLICATIONS / BENEFITS
• Unidirectional low-capacitance TVS series for
flexible thru-hole mounting (for bidirectional see
Figure 4)
• Suppresses transient up to 500 Watts Peak Pulse
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.
• Also available in surface mount with SMAJ or
SMBJ prefix for part numbers (ex. SMAJSAC5.0)
• UL94V-0 Flammability Classification
• Low Capacitance for data-line protection to 70 MHz
• ESD and EFT protection per IEC61000-4-2 and
IEC61000-4-4 respectively
• 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
• 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
MAXIMUM RATINGS MECHANICAL AND PACKAGING
• Peak Pulse Power Dissipation at 25oC: 500 Watts @
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”).
• Clamping Speed (0 volts to V(BR) Min.) less than 5
nanoseconds.
• Operating and Storage Temperature: -65oC to +150oC.
• CASE: Void Free Transfer Molded Thermosetting Plastic
(DO-41) meeting UL94V-0
• 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.)
• 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.
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
Copyright 2004
4-26-2004 REV B
SAC5.0 thru SAC50
500 WATT LOW CAPACITANCE
TRANSIENT VOLTAGE SUPPRESSOR
SCOTTSDALE DIVISION
WWW.Microsemi .COM SAC5.0 thru SAC50
ELECTRICAL CHARACTERISTICS @ 25oC
MICROSEMI
PART
NUMBER
REVERSE
STAND-OFF
VOLTAGE
(Note 1)
VWM
Volts
BREAKDOWN
VOLTAGE
V(BR) @ I(BR)
1.0mA
V(BR)
Volts
Min.
MAXIMUM
STANDBY
CURRENT
ID @VWM
µA
MAXIMUM
CLAMPING
VOLTAGE
VC
@ IP = 5.0A
Volts
MAXIMUM
PEAK PULSE
CURRENT
RATING
IPP
Amps
MAXIMUM
CAPACITANCE
@ O Volts
pF
WORKING
INVERSE
BLOCKING
VOLTAGE
VWIB
Volts
INVERSE
BLOCKING
LEAKAGE
CURRENT
@ VWIB
IIB µA
PEAK
INVERSE
BLOCKING
VOLTAGE
VPIB
Volts
SAC5.0
SAC6.0
5.0
6.0
7.60
7.90
300
300
10.0
11.2
44
41
30
30
75
75
10
10
100
100
SAC7.0
SAC8.0
7.0
8.0
8.33
8.89
300
100
12.6
13.4
38
36
30
30
75
75
10
10
100
100
SAC8.5
SAC10
8.5
10
9.44
11.10
50
5.0
14.0
16.3
34
29
30
30
75
75
10
10
100
100
SAC12
SAC15
12
15
13.30
16.70
5.0
5.0
19.0
23.6
25
20
30
30
75
75
10
10
100
100
SAC18
SAC22
18
22
20.00
24.40
5.0
5.0
28.8
35.4
15
14
30
30
75
75
10
10
100
100
SAC26
SAC36
26
36
28.90
40.0
5.0
5.0
42.3
60.0
11.1
8.6
30
30
75
75
10
10
100
100
SAC45
SAC50
45
50
50.00
55.50
5.0
5.0
77.0
88.0
6.8
5.8
30
30
150
150
10
10
200
200
* 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.
Note 1: A transient voltage suppressor is normally selected according to voltage (VWM), which should be equal to or greater than the dc or continuous peak
operating voltage level.
Note 2: When pulse testing, test in TVS avalanche direction. Do not pulse in “forward” direction. See section for “Schematic Applications” herein.
GRAPHS
t
w – Pulse Width µs
FIGURE 1
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 2
Copyright 2004
4-26-2004 REV B
SAC5.0 thru SAC50
500 WATT LOW CAPACITANCE
TRANSIENT VOLTAGE SUPPRESSOR
SCOTTSDALE DIVISION
WWW.Microsemi .COM SAC5.0 thru SAC50
Peak Power
(Single Pulse)
IPP
–
Peak Pulse Current
-
%I
PP
% of Rated Power
Average
Power
Lead Length = 3/8”
TL – Lead Temperature – oC t – Time – msec
FIGURE 2 FIGURE 3
SCHEMATIC APPLICATIONS
The TVS low capacitance device configuration is shown in Figure 4. As a further option for unidirectional applications, an additional low
capacitance rectifier diode may be used in parallel in the same polarity direction as the TVS as shown in Figure 5. In applications where random
high voltage transients occur, this will prevent reverse transients from damaging the internal low capacitance rectifier diode and also provide a
low voltage conducting direction. The added rectifier diode should be of similar low capacitance and also have a higher reverse voltage rating
than the TVS clamping voltage VC. The Microsemi recommended rectifier part number is the “LCR60” for the application in Figure 5. If using two
(2) low capacitance TVS devices in anti-parallel for bidirectional applications, this added protective feature for both directions (including the
reverse of each rectifier diode) is also provided. The unidirectional and bidirectional configurations in Figure 5 and 6 will both result in twice the
capacitance of Figure 4.
FIGURE 4 FIGURE 5 FIGURE 6
TVS with internal Low Optional Unidirectional Optional Bidirectional
Capacitance Diode configuration (TVS and configuration (two TVS
separate rectifier diode) devices in anti-parallel)
in parallel)
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 3
Copyright 2004
4-26-2004 REV B
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 4
Copyright 2004
4-26-2004 REV B
WWW.Microsemi .COM
SAC5.0 thru SAC50
500 WATT LOW CAPACITANCE
TRANSIENT VOLTAGE SUPPRESSOR
SCOTTSDALE DIVISION
SAC5.0 thru SAC50
PACKAGE DIMENSIONS
