Thyristors
The Protection Products Group of World Products Inc., specializing in protection components for telecommunication
and AC and DC circuits, is proud to feature World Products complete line of Thyristors.
At World Products Inc. we keep our promises. It's just that simple. You will see for yourself when you buy a World
Products Thyristor that you have not only purchased a fine component, but that we will also provide the finest customer
service in today's marketplace.
The main features of these Thyristors are:
Bidirectional transient voltage protection.
Nanosecond clamping response.
No performance degradation under service life.
Glass passivated junction.
Providing the following benefits:
Excellent voltage protection levels.
Primary or secondary protection levels.
Never needs replacement (no maintenance cost).
Highest level of quality and reliability.
Low cost auto-assembly.
Discover why the first choice in Thyristors is World Products.
Table of Contents
Definitions
Features, Selection Guide,
Maximum Thermal Ratings,
Thermal Characteristics,
Electrical Characteristics,
Mechanical Data
Application Notes
Maximum Surge Ratings
Thyristor Electrical
Characteristics
Axial Lead and Surface
Mount Electrical
Characteristics
Marking Codes,
Order and Packing
Information
Specifications
Demonstration Circuits for
Product Use
Device Part Marking
Rating and Characteristic
Curves
Circuit Examples
Thyristors
-
Definitions
SYMBOL CHARACTERISTIC
VALUE
The maximum voltage across the device in or at breakdown measured under
a specified voltage and current rate of rise.
The minimum voltage at which the device switch-on begins and significant
current flows.
The instantaneous current flowing at the breakover voltage.
(V
BO
)
The minimum current required to maintain the device in the on-state.
The current through the device in the on-state condition.
The voltage across the device in the on-state condition at a specified current.
V
BO
V
BR
I
BO
I
H
I
T
V
T
V
DRM
I
DRM
I
PPS
I
TSM
di/dt
dv/dt
Max Breakover Voltage
Min Breakover Voltage
Breakover Current
Holding Current
On-state Current
On-state Voltage
Rated Repetitive Peak
Off-state Voltage
Repetitive Peak
Off-state Current
Non-Repetitive
Peak Pulse Current
Non-Repetitive Surge
Peak On-state Current
Critical Rate of Rise of
On-state Current.
(I
T
)
Rated maximum (peak) continuous voltage that may be applied in the
off-state condition.
The maximum (peak) value of the current that results from the application
of
(V
DRM
)
Rated maximum value of peak impulse current of specified amplitude and
waveshape that may be applied without damage to the device under test.
Rated maximum value of AC current, at a given frequency, which may be
applied for specified time or number of cycles.
Rated value of the rate of rise of current that the device can withstand
without damage.
Critical Rate of Rise of The maximum rate of rise of voltage (below V
DRM
) that will not cause
Off-state Voltage.
.
. switching from the off-state to the on-state
Thyristors
-
Application Notes
FEATURES
Protects by Limiting voltages and shunting surge currents away from sensitive circuits.
Designed for telecommunications applications such as line cards, modems, PBX, FAX, LAN, VHDSL.
Helps meet standards such as GR1089, ITU K.20, IEC950, UL1459&50, FCC part 68.
Low capacitance, High surge (A, B, C rating available), precise voltage limiting, Long life.
SELECTION GUIDE
Follow these steps to select the proper Thyristor surge protector for your application:
1.
Define the operating parameters for the circuit:
Ambient operating temperature range
Maximum telephone line operating current (highest battery and shortest copper loop)
Maximum operating voltage: (Maximum DC bias + peak ringing voltage)
Maximum surge current
System voltage damage threshold
2.
Select device with an off-state voltage rating (VDRM) above the maximum operating voltage at the minimum
operating temperature
3.
Select surge current ratings (I
PPS
and I
TSM
) > those which the application must withstand
4.
Verify that the minimum holding current of the device at the maximum ambient temperature is above the maximum
dc current of the system
5.
Verify that the maximum breakover voltage of the device is below the system damage threshold.
6.
Verify that the circuit's ambient operating temperatures are within the device's operating temperature range.
7.
Verify that the device's dimensions fit the application's space considerations.
8.
Independently evaluate and test the suitability and performance of the device in the application
MAXIMUM THERMAL RATINGS
Rating
Storage Junction Temperature Range
Operating Junction Temperature Range
Operating Ambient Temperature Range
Notes:
PCB board mounted on minimum foot print.
THERMAL CHARACTERISTICS
Characteristic
Symbol Value Unit
Thermal Resistance Junction to leads T
L
on tab adjacent to plastic.
Both leads soldered to identical pad sizes.
R
ØJL
Max. 20 °C / W
Notes:
The junction to lead thermal resistance represents a minimum limiting value with both leads
soldered to a large near-infinite heatsink. The junction to ambient thermal resistance depends
strongly on board mounting conditions and typically is 3 to 6 times higher than the junction to
lead resistance. The data shown is to be used as guideline values for preliminary engineering.
Symbol
T
STG
T
J
T
A
Value
-50 to 150
-40 to 150
-40 to 65
Unit
°C
°C
°C
Thyristors
-
Application Notes
- (Continued)
ELECTRICAL CHARACTERISTICS
(Tc = 25 °C UNLESS OTHERWISE NOTED)
Parameters
Test Conditions
Repetitive Peak
V
D
= rated V
DRM
Off-State Current
f = 60 Hz, I
SC
= 1Arms, Vac = 1 KVrms, R
L
= 1Kohm, 1/2 AC
Breakover Current
cycle
Holding Current 10/1000µs waveform, I
SC
= 10A, V
OC
= 62 V, R
L
= 400 ohms
On-State Voltage
.
I
T
= 1 A, T
W
= 300µs, 1 pulse
Notes:
Specific I
H
values are available by request.
MECHANICAL DATA
Case: JEDEC DO-15 molded plastic
Terminals: Plated Axial leads, Solder per
MIL-STD-750, Method 2026
Polarity: Bi-directional
Weight: 0.015 ounce, 0.4 gram
Case: JEDEC DO-214AA molded plastic
Terminals: Solder plated, Solderable per
MIL-STD-750, Method 2026
Polarity: Bi-directional Standard packaging: 12mm
tape (EIA-481)
Weight: 0.003 ounce, 0.093 gram
Symbol Min. Max. Unit
I
DRM
.
I
BO
.
5
800
5
µA
mA
mA
.
V
.
I
H
V
T
150
.
.
.
Thyristors
-
Maximum Surge Ratings
(T
J
= 25 °C UNLESS OTHERWISE NOTED)
Non-Repetitive
Peak
On-State
Surge Current
Rating
Non-Repetitive Peak Pulse Current
I
PPS
Symbol
Short-Circuit
2/10 µs 8/20 µs 10/160 µs 5/310 µs 10/560 µs 10/1000 µs
Current Wave
Open-Circuit
2/10 µs 1.2/50 µs 10/160 µs 10/700 µs 10/560 µs 10/1000 µs
Voltage Wave
.
.
.
.
.
Value
A and SA Series 175 A
150 A
100 A
85 A
70 A
50 A
Value
B and SB Series
300 A
225 A
350 A
150 A
115 A
100 A
125 A
80 A
100 A
.
Value
C and SC Series 500 A
.
Notes
200 A
150 A
(1,2,4,5,6)
I
TSM
20 A
30 A
60 A
(1,2,3,4)
Notes:
1.
Thermal accumulation between successive surge tests is not allowed.
2.
The device under test initially must be in thermal equilibrium with T
J
=
25 °C.
3.
Test at 1 cycle, 60 Hz.
4.
Surge ratings are non-repetitive because instantaneous junction
temperatures may exceed the maximum rated T
J
. Nevertheless, devices
will survive many surge applications without degradation. Surge capability
will not degrade over a device's typical operating life.
5.
Adjust the surge generator for optimum current-wave accuracy when
both voltage and current wave specifications cannot be exactly met. The
current wave is more important than the voltage wave for accurate surge
evaluation.
6.
The waveform is defined as A/B ms where:
A: (Virtual front time) = 1.25 X Rise time = 1.25 X (T
b
- T
a
)
B: (Duration time to 50% level of I
PPS
) = T
1
- T
0
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