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1500 WATT UNIDIRECTIONAL
TRANSIENT VOLTAGE SUPPRESSOR
100
10
1.0
0.1Kw
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 2
Copyright
2002
11-06-2003 REV A
W
M
.
C
SCOTTSDALE DIVISION
1N5555
1N5557
1N5556
1N5558
1
5
ELECTRICAL CHARACTERISTICS
Minimum
Breakdown
Voltage
V
(BR)
@ I
(BR)
Number
(Notes
1&2)
V
1N5555
1N5556
1N5557
1N5558
191.0
NOTE 1: A TVS is normally selected according to the rated “Standoff Voltage” V
WM
that should be equal to or greater than the dc or
continuous peak operating voltage level.
NOTE 2: Also available in military qualified types with a JAN, JANTX, or JANTXV prefix.
Test
Current
I
(BR)
Rated
Standoff
Voltage
V
WM
Maximum
(RMS)
Reverse
Voltage
V
WM(RMS)
Maximum
Standby
Current
I
D
@ V
WM
Maximum
Peak
Reverse
Voltage
V
C
@ I
PP
Maximum
Peak Pulse
Current
I
PP
Maximum
Temperature
Coefficient of V
(BR)
α
V(BR)
@ 1.0 mA
%/
o
C
+.093
+.094
+.096
+.100
JEDEC
Type
mA
1.0
1.0
1.0
1.0
V
V
μ
A
5
5
5
5
V
A
32
24
19
5.7
33.0
43.7
54.0
30.5
40.3
49.3
175.0
21.5
28.5
34.5
124.0
47.5
63.5
78.5
265.0
SYMBOLS & DEFINITIONS
Symbol
V
WM
V
(BR)
Definition
Standoff Voltage: Applied Reverse Voltage to assure a nonconductive condition. (See Note 1 above.)
Breakdown Voltage: This is the Breakdown Voltage the device will exhibit at 25
C
Maximum Clamping Voltage: The maximum peak voltage appearing across the TVS when subjected to the
peak pulse current in a one millisecond time interval. The peak pulse voltage is the combination of voltage rise
due to both the series resistance and thermal rise and positive temperature coefficient (
α
V(BR)
)
Peak Pulse Current: The peak current during the impulse (See Figure 2)
Peak Pulse Power: The pulse power as determined by the product of V
C
and I
PP
Standby Current: The current at the standoff voltage (V
WM
)
Breakdown Current: The current used for measuring Breakdown Voltage (V
(BR)
)
V
C
I
PP
P
PP
I
D
I
(BR)
GRAPHS
FIG. 2
Pulse wave form for exponential surge
100ns
1
μ
s
10
μ
s
Pulse Time (tp
)
100
μ
s
1ms
10ms
P
P
)
P
Square-wave pulse
Exponential wave-form
(See FIG. 2)
P
P
)
Peak Value
I
PP
Pulse time duration (tp) is
defined as that point where
I
P
decays to 50% of peak
value (I
PP
).
time (t) in milliseconds
FIG. 1 –
Non-repetitive peak pulse power rating curve
NOTE: Peak power defined as peak voltage times peak current