1500 WATT UNIDIRECTIONAL
TRANSIENT VOLTAGE SUPPRESSOR
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503

Page 1
Copyright  2002
11-06-2003 REV A
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SCOTTSDALE DIVISION

1N5555 1N5556
1N5557 1N5558
1
N
5
5
5
5

t
h
r
u

1
N
5
5
5
8

5
5
5
5

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1
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5
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8



DESCRIPTION

APPEARANCE

This Transient Voltage Suppressor (TVS) series for 1N5555 thru 1N5558
are JEDEC registered selections for unidirectional devices. All have the
same high Peak Pulse Power rating of 1500 W with extremely fast
response times. They are also available in military qualified selections as
described in the Features section herein. They are most often used for
protecting against transients from inductive switching environments,
induced RF effects, or induced secondary lightning effects as found in
lower surge levels of IEC61000-4-5. They are also very successful in
protecting airborne avionics and electrical systems. Since their response
time is virtually instantaneous, they can also protect from ESD and EFT per
IEC61000-4-2 and IEC61000-4-4.


DO-13
(DO-202AA)
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com


FEATURES

APPLICATIONS / BENEFITS
• Unidirectional TVS series for thru-hole mounting
• Working voltage (V
WM
) range 30.5 V to 175 V
• Hermetic sealed DO-13 metal package
• JAN/TX/TXV military qualifications also available per
MIL-PRF-19500/500 by adding the JAN, JANTX, or
JANTXV prefix, e.g. JANTXV1N5555, etc.
• For bidirectional TVS in the same DO-13 package, see
separate data sheet for the 1N6036 – 1N6072A series
(also military qualified)
• Surface mount equivalent packages also available
from the SMCJ5.0 - SMCJ170CA or SMCG5.0 –
SMCG170C series in separate data sheet (consult
factory for other surface mount options)
• Plastic axial-leaded equivalents available from the
1N6267 – 1N6303A series in separate data sheet


• Suppresses transients up to 1500 watts @ 10/1000
µs (see Figure 1)
• Clamps transient in less than 100 pico seconds
• Protection from switching transients and induced RF
• Protection from ESD and EFT per IEC 61000-4-2
and IEC 61000-4-4
• Secondary lightning protection per IEC61000-4-5
with 42 Ohms source impedance:
Class 1: 1N5555 to 1N5558
Class 2 & 3: 1N5555 to 1N5557
Class 4: 1N5555 to 1N5556
• Secondary lightning protection per IEC61000-4-5
with 12 Ohms source impedance:
Class 1: 1N5555 to 1N5557
Class 2: 1N5555 to 1N5557
• Inherently radiation hard as described in Microsemi
MicroNote 050

MAXIMUM RATINGS

MECHANICAL AND PACKAGING
• 1500 Watts for 10/1000 µs with repetition rate of 0.01% or
less* at lead temperature (T
L
) 25
o
C (see Figs 1, 2, & 4)
• Operating & Storage Temperatures: -65
o
to +175
o
C
• THERMAL RESISTANCE: 50
o
C/W junction to lead at
0.375 inches (10 mm) from body or 110
o
C/W junction to
ambient when mounted on FR4 PC board with 4 mm
2

copper pads (1oz) and track width 1 mm, length 25 mm
• DC Power Dissipation*: 1 Watt at T
L
= +25
o
C 3/8” (10
mm) from body (see derating in Fig 3)
• Forward surge current: 200 Amps for 8.3ms half-sine
wave at T
A
= +25
o
C
• Solder Temperatures: 260
o
C for 10 s (maximum)

• CASE: DO-13 (DO-202AA), welded, hermetically
sealed metal and glass
• FINISH: All external metal surfaces are Tin-Lead
plated and solderable per MIL-STD-750 method
2026
• POLARITY: Cathode connected to case and
polarity indicated by diode symbol
• MARKING: Part number and polarity diode symbol
• WEIGHT: 1.4 grams. (Approx)
• TAPE & REEL option: Standard per EIA-296 (add
“TR” suffix to part number)
• See package dimension on last page

* 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).