ICT-5 thru ICT-45C, e3
TRANSIENT VOLTAGE SUPPRESSOR
SCOTTSDALE DIVISION
DESCRIPTION
APPEARANCE
WWW .
Microsemi
.C
OM
The ICT-5 through ICT-45C series of Transient Voltage Suppressors
(TVSs) are designed for the protection of integrated circuits that
require very low Clamping Voltages (V
C
) during a transient threat.
Due to their very fast response time, protection level and high Peak
Pulse Power (P
PP
) capability, they are extremely effective in
providing protection against line transients generated by: voltage
reversals, capacitive or inductive load switching, electromechanical
switching, electrostatic discharge and electromagnetic coupling.
IMPORTANT:
For the most current data, consult
MICROSEMI’s
website:
http://www.microsemi.com
FEATURES
•
•
•
•
•
APPLICATIONS / BENEFITS
•
These TVSs are designed for the protection
of integrated circuits. Characterized by a
very low clamping voltage together with a
low standoff voltage, they afford a high
degree of protection to: TTL, ECL, DTL,
MOS, CMOS, VMOS, HMOS, NMOS and
static memory circuits.
This series of TVS devices is designed to protect
Bipolar, MOS and Schottky improved integrated
circuits.
Transient protection for CMOS, MOS, Bipolar, ICS
(TTL, ECL, DTL, RTL and linear functions)
5.0 to 45 volts
Low clamping ratio
RoHS Compliant devices available by adding “e3”
suffix
MAXIMUM RATINGS
MECHANICAL AND PACKAGING
•
•
•
•
•
CASE: DO-13 welded, hermetically sealed
metal and glass.
FINISH: Tin-lead or RoHS Compliant matte-
Tin plating solderable per MIL-STD-750,
method 2026
POLARITY: Cathode connected to case and
marked. Bidirectional not marked.
WEIGHT: 1.4 grams (approx.)
MOUNTING POSITION: Any
•
•
•
•
•
•
•
•
1500 Watts of Peak Pulse Power (P
PP
)
dissipation at 25
o
C and 10x1000μs
t
clamping
(0 volts to V
(BR)
min):
<100 ps theoretical for unidirectional and <5 ns
for bidirectional
Operating and Storage temperatures: -65
o
C to
+175
o
C.
Forward surge rating: 200 amps, 1/120 second at
25
o
C. (Applies to Unidirectional or single
direction only).
Steady State power dissipation: 1.0 watt.
Repetition rate (duty cycle): .01%
Clamping Factor: 1.33 @ Full rated power.
1.20 @ 50% rated power.
Clamping Factor: The ratio of the actual V
C
(Clamping Voltage) to the actual V
(BR)
(Breakdown Votlage) as measured on a specific
device.
ICT-5 thru ICT-45C, e3
Copyright
©
2007
7-09-2007 REV A
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 1
ICT-5 thru ICT-45C, e3
TRANSIENT VOLTAGE SUPPRESSOR
SCOTTSDALE DIVISION
ELECTRICAL CHARACTERISTICS @ 25oC
STAND-OFF
VOLTAGE
(NOTE 1)
V
WM
VOLTS
MAXIMUM
REVERSE
LEAKAGE
@V
WM
I
D
μA
MINIMUM*
BREAKDOWN
VOLTAGE
@ 1 mA
V
(BR)
(min)
VOLTS
MAXIMUM
CLAMPING
VOLTAGE
(Fig. 1)
I
PP1
= 1A
V
C
VOLTS
MAXIMUM
CLAMPING
VOLTAGE
(Fig. 1)
@ I
PP2
= 10A
V
C
VOLTS
MAXIMUM
PEAK PULSE
CURRENT
@ 10 X 1000
μs
I
PP3
A
WWW .
Microsemi
.C
OM
MICROSEMI
PART NUMBER
ICT-5
5.0
300
6.0
ICT-8
8.0
25
9.4
ICT-10
10.0
2
11.7
ICT-12
12.0
2
14.1
ICT-15
15.0
2
17.6
ICT-18
18.0
2
21.2
ICT-22
22.0
2
25.9
ICT-36
36.0
2
42.4
ICT-45
45.0
2
52.9
Vf at 100 amps peak, 8.3 ms sine wave equals 3.5 volts maximum.
7.1
11.3
13.7
16.1
20.1
24.2
29.8
50.6
63.3
7.5
11.5
14.1
16.5
20.6
25.2
32.0
54.3
70.0
160
100
90
70
60
50
40
23
19
ELECTRICAL CHARACTERISTICS @ 25
o
C (Test Both Polarities)
ICT-5C
5.0
300
6.0
7.1
7.5
160
ICT-8C
8.0
25
9.4
11.4
11.6
100
ICT-10C
10.0
2
11.7
14.1
14.5
90
ICT-12C
12.0
2
14.1
16.7
17.1
70
ICT-15C
15.0
2
17.6
20.8
21.4
60
ICT-18C
18.0
2
21.2
24.8
25.5
50
ICT-22C
22.0
2
25.9
30.8
32.0
40
ICT-36C
36.0
2
42.4
50.6
54.3
23
ICT-45C
45.0
2
52.9
63.3
70.0
19
C suffix indicates Bidirectional.
NOTE 1: TVSs are normally selected according to the reverse “Stand Off Voltage” V
WM
which should be equal to
or greater than the dc or repetitive peak operation voltage level.
* The minimum breakdown voltage as shown takes into consideration the +/-1 volt tolerance normally specified for power supply regulation on
most integrated circuit manufacturers data sheets. Similar devices are available with reduced clamping voltages where tighter regulated
power supply voltages are employed.
OUTLINE AND CIRCUIT
ICT-5 thru ICT-45C, e3
FIGURE 1
Non-repetitive peak pulse power
rating curve.
NOTE:
Peak power defined as peak
voltage times peak current.
Copyright
©
2007
7-09-2007 REV A
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 2
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