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TVS D
ioDeS
Table of Contents
Transient Voltage Suppression Diodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P4KE Series — 400 Watt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SA Series — 500 Watt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P6KE Series — 600 Watt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5KE Series — 1500 Watt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3KP Series — 3000 Watt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5KP Series —5000 Watt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15KP Series —15000 Watt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20KP Series —20000 Watt NEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30KP Series —30000 Watt NEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P4SMAJ Series — 400 Watt Surface Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P6SMBJ Series — 600 Watt Surface Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.5SMCJ Series — 1500 Watt Surface Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.0SMCJ Series — 3000 Watt Surface Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.0SMCJ Series — 5000 Watt Surface Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Transient Voltage Suppression Diodes
World Products, LLC is committed to providing the optimum products for your transient/surge protection problems.
Our TVS Diode satisfies the toughest requirements for a low clamping device and provides superior performance in all
applications.
World Products expands your options . . .
Large selection of equivalents to essentially all TVS Diodes. World Products
specifications are designed to provide all of the necessary physical and electrical parameters required for proper
component selection.
Discover why the first choice in TVS Diodes is WPI.
QS
9000
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SOCI
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ISO
9002
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SOCI
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ISO
14001
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World Products, LLC
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
ÉE
Rev. 2.0 (05.17.10)
TVS Diodes | 1
TVS D
ioDeS
General Information
TVS Diode Technology
World Products Transient Voltage Suppression (TVS) Diodes are silicon avalanche devices designed, manufactured,
specified and tested according to voltage suppression applications.
These devices, with their fast response and low clamping characteristics, protect all MOS technology based devices,
hybrids, and other voltage sensitive components. The low clamping factor and pico-second response time of World
Products TVS Diodes clamps transient pulses early and maintains them at an acceptable level for their entire duration. In
other overvoltage protection devices, response times are delayed by 24nS to 2μs allowing transients to reach dangerous
levels. World Products TVS Diodes are designed to meet a 1.30 maximum clamping factor at their rated peak impulse
current. This can be compared to clamping factors of 2 to 5 found in other protection devices.
TVS Diode Applications
TVS Diodes are the optimum choice in protecting computer or data processor circuits and power supplies, airframe
avionics and controls, numerically controlled machines, telecom circuits, and many other applications. These devices
are designed to protect against transient voltages generated by lightning, electro-static discharge (ESD), and inductive
switching.
TVS Diode RoHS Compliance
All axial TVS Diodes (no suffix code required) and SMD TVS Diodes (denoted by suffix “F”) products purchased from
World Products, LLC comply to a maximum concentration value of 0.1% by weight in homogeneous materials for lead
(Pb), mercury, hexavalent chromium, polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE) and of
0.01% weight in homogeneous materials for cadmium and are in compliance with Directive 2002/95/EC of the European
Parliament and of the Council of 27 January 2003 on the restriction of the use of certain hazardous substances in
electrical and electronic equipment (RoHS Directive).
Note: Lead(Pb) in high-melting point solder for internal connections is not inhibited by RoHS. (i.e. tin-lead solder alloys
containing more than 85%)
Selecting the Correct Part Type
The following guidelines should be observed in selecting the correct diode:
TVS Parameters Application Parameters
1. Stand-off Voltage
(V
wm
) >=
Operating Voltage
2. Peak Pulse Current (I
ppm
) >=
Source Transient Current
=<
Voltage Withstand
3. Clamping Voltage
(V
c
)
(V
op
)
(I
s
)
(V
ws
)
1. If the stand-off voltage is less than the operating voltage of the application, the diode will continually clamp the
circuit voltage.
2. The Peak Pulse Current (I
ppm
) is the maximum current the TVS can handle. The source transient current is
determined by dividing the peak transient voltage by the source impedance — this is often difficult to determine. In
many cases, however, this may be obtained from industry standard documents, customer requirements, etc.
3. Determine the maximum voltage level that the protected device can withstand (V
ws
). Select a suppressor which will
clamp the transient at a lower level (V
c
).
Consider the transient source: lightning, electro-static discharge, inductive switching or nuclear explosion (NEMP).
Often, a 1500 watt peak pulse rated device will protect against transients due to secondary lightning effects or inductive
switching on power, data and telephone lines. A 500 watt device is sufficient to protect sensitive components against
transients generated by electro-static discharge.
World Products, LLC
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
2 | TVS Diodes
Rev. 2.0 (05.17.10)
TVS D
ioDeS
General Information (continued)
Schematic Symbols
Definitions of Terms
Unidirectional
Bidirectional
V
c
Clamping Voltage:
Peak voltage across the suppressor measured at a specific I
ppm
. (Note: due to thermal, reactive or other effects, peak
voltage and peak current are not necessarily coincident in time.)
I
pp
Peak Impulse Current:
Peak current measured using a specified waveform.
I
ppm
Rated Peak Impulse Current:
Rated maximum value of peak impulse current (I
pp
) applied using a 10 x 1000μs waveform. (Minimum of 10 pulses
applied.)
Vwm Rated Standoff Voltage:
Maximum working (continuous) DC or peak voltage which may be applied over the standard operating temperature range.
(Note: Vwm of a selected device must be greater than or equal to the maximum operating voltage of the line to be protected.)
I
d
Stand-By Current:
Maximum current that flows through the suppressor at rated standoff voltage (V
wm
) at a specified temperature.
V
br
Breakdown Voltage:
The voltage measured across the suppressor at a specified DC test current (I
t
).
I
t
Test Current:
The specific DC current applied to the suppressor used to determine breakdown voltage (V
br
).
V
br
Temperature Coefficient:
The ratio of change in breakdown voltage (V
br
) to changes in temperature. Expressed either as millivolts per degree
centigrade (mV/°C) or percent change in breakdown voltage per degree centigrade (%V
br
/°C).
C
f
Clamping Factor:
Ratio of the measured clamping voltage (V
c
) at specified peak pulse current (I
pp
) to breakdown voltage (V
br
) on a
specific device.
V
c
CF = –––
V
br
C Capacitance:
Capacitance between the two terminals of a suppressor measured at a specific frequency and bias voltage.
P
ppm
Rated Multiple Peak Pulse Power:
Derived by multiplying the maximum clamping voltage (V
c
) times the Rated Peak Impulse Current (I
ppm
).
IFSM Rated Forward Surge Current:
Unidirectional devices only. Maximum forward current during a 8.3ms half sine wave of AC line frequency (60Hz).
World Products, LLC
19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com
Rev. 2.0 (05.17.10)
TVS Diodes | 3
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