DIGITRON SEMICONDUCTORS
1N5555-1N5558
MAXIMUM RATINGS
1500 Watts for 10/1000µs with repetition rate of 0.01% or less* at lead temperature (T
L
) 25°C
Operating and Storage
Temperatures
Thermal Resistance
DC Power Dissipation *
Forward Surge Current
Solder Temperatures
-65 to +175°C
50°C/W junction to lead at 0.375” from body or 110°C/W junction to ambient when
mounted on FR4 PC board with 4 mm
2
copper pads and track width 1mm, length 25mm
1 Watt @ T
L
= 25°C 3/8 from body
200 Amps for 8.3 ms half-sine wave @ T
A
= 25°C
260°C for 10 s (maximum)
1500 WATT UNIDIRECTIONAL
TRANSIENT VOLTAGE SUPPRESSOR
* TVS devices are not typically used for dc power dissipation and are instead operated at or less than their rated standoff voltage (V
WM
) except for
transients that briefly drive the device into avalanche breakdown (V
BR
to V
C
region).
ELECTRICAL CHARACTERISTICS
Minimum
Breakdown
Voltage
V
(BR)
@ I
(BR)
V
1N5555
1N5556
1N5557
1N5558
33.0
43.7
54.0
191.0
Test
Current
I
(BR)
mA
1.0
1.0
1.0
1.0
Rated
Standoff
Voltage
V
WM
V
30.5
40.3
49.0
175
Maximum
(RMS)
Reverse
Voltage
V
WM(RMS)
V
21.5
28.5
34.5
124.0
Maximum
Standby
Current
I
D
@ V
WM
µA
5
5
5
5
Maximum
Peak
Reverse
Voltage
V
C
@ I
PP
V
47.5
63.5
78.5
265.0
Maximum
Peak Pulse
Current
I
PP
A
32
24
19
5.7
Maximum
Temperature
Coefficient
Type
(note 1)
α
V
(BR)
%/°C
+.093
+.094
+.096
+.100
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.
SYMBOLS AND DEFINITIONS
V
WM
V
(BR)
V
C
I
PP
P
PP
I
D
I
(BR)
Standoff Voltage: Applied Reverse Voltage to assure a nonconductive condition
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
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)
)
144 Market Street
Kenilworth NJ 07033 USA
phone +1.908.245-7200
fax +1.908.245-0555
sales@digitroncorp.com
www.digitroncorp.com
Rev. 20120906
DIGITRON SEMICONDUCTORS
1N5555-1N5558
1500 WATT UNIDIRECTIONAL
TRANSIENT VOLTAGE SUPPRESSOR
MECHANINCAL CHARACTERISTICS
Case
Marking
Polarity
DO-13, welded, hermetically sealed metal and glass
Alpha Numeric, Body Painted
Cathode Band
Dimension
A
B
C
D
E
F
G
Inches
Min
Max
-
0.235
0.315 0.350
1.250
-
1.250
-
-
0.210
-
0.090
0.026 0.035
Millimeters
Min
Max
-
5.970
8.001
8.890
31.750
-
31.750
-
-
5.334
-
2.286
0.660
0.889
Available Non-RoHS (standard) or RoHS compliant (add PBF suffix).
Available as “HR” (high reliability) screened per MIL-PRF-19500, JANTX level. Add “HR” suffix to base part number.
144 Market Street
Kenilworth NJ 07033 USA
phone +1.908.245-7200
fax +1.908.245-0555
sales@digitroncorp.com
www.digitroncorp.com
Rev. 20120906
