
269
Revised: November 1, 2010 05:04 PM
2010 Littelfuse, Inc
Teccor brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
20 / 25 Amp Standard SCRs
Sxx20x & Sxx25x Series
Sxx20x & Sxx25x Series
Description
Excellent unidirectional switches for phase control
applications such as heating and motor speed controls.
Standard phase control SCRs are triggered with few
milliamperes of current at less than 1.5V potential.
Features & Benefits
RoHS compliant
Glass – passivated
junctions
Voltage capability up
to 1000 V
Surge capability up to
350 A
Schematic Symbol
Main Features
Symbol
Value
Unit
I
T(RMS)
20 & 25
A
V
DRM/VRRM
400 to 1000
V
I
GT
30 to 35
mA
Absolute Maximum Ratings — 20A SCR
Symbol
Parameter
Test Conditions
Value
Unit
I
T(RMS)
RMS on-state current
T
C = 80°C
20
A
I
T(AV)
Average on-state current
Sxx20x
T
C = 80°C
12.8
A
I
TSM
Peak non-repetitive surge current
single half cycle; f = 50Hz;
T
J (initial) = 25°C
255
A
single half cycle; f = 60Hz;
T
J (initial) = 25°C
300
I2t
I2t Value for fusing
t
p = 8.3 ms
374
A2s
di/dt
Critical rate of rise of on-state current
f = 60Hz ; T
J = 125°C
125
A/μs
I
GM
Peak gate current
T
J = 125°C
3
A
P
G(AV)
Average gate power dissipation
T
J = 125°C
0.6
W
T
stg
Storage temperature range
-40 to 150
°C
T
J
Operating junction temperature range
-40 to 125
°C
Applications
Typical applications are AC solid-state switches, industrial
power tools, exercise equipment, white goods and
commercial appliances.
Internally constructed isolated packages are offered for
ease of heat sinking with highest isolation voltage.
AK
G
Agency Approval
Agency
Agency File Number
L Package: E71639