© Semiconductor Components Industries, LLC, 2015
January, 2015 − Rev. 5
1 Publication Order Number:
MCR218/D
MCR218-2G, MCR218-4G,
MCR218-6G
Silicon Controlled Rectifiers
Reverse Blocking Thyristors
Designed primarily for half-wave ac control applications, such as
motor controls, heating controls and power supplies; or wherever
half-wave silicon gate-controlled, solid-state devices are needed.
Features
• Glass-Passivated Junctions
• Blocking Voltage to 400 Volts
• TO-220 Construction − Low Thermal Resistance, High Heat
Dissipation and Durability
MAXIMUM RATINGS (T
J
= 25°C unless otherwise noted)
Rating
Symbol Value Unit
Peak Repetitive Off−State Voltage (Note 1)
(T
J
= *40 to 125°C, Gate Open)
MCR218−2G
MCR218−4G
MCR218−6G
V
DRM,
V
RRM
50
200
400
V
On-State RMS Current
(180° Conduction Angles; T
C
= 70°C)
I
T(RMS)
8.0 A
Peak Non-repetitive Surge Current
(1/2 Cycle, Sine Wave 60 Hz, T
J
= 125°C)
I
TSM
100 A
Circuit Fusing Considerations (t = 8.3 ms) I
2
t 26 A
2
s
Forward Peak Gate Power
(Pulse Width ≤ 1.0 ms, T
C
= 70°C)
P
GM
5.0 W
Forward Average Gate Power
(t = 8.3 ms, T
C
= 70°C)
P
G(AV)
0.5 W
Forward Peak Gate Current
(Pulse Width ≤ 1.0 ms, T
C
= 70°C)
I
GM
2.0 A
Operating Junction Temperature Range T
J
−40 to +125 °C
Storage Temperature Range T
stg
−40 to +150 °C
Stresses exceeding those listed in the Maximum Ratings table may damage the
device. If any of these limits are exceeded, device functionality should not be
assumed, damage may occur and reliability may be affected.
1. V
DRM
and V
RRM
for all types can be applied on a continuous basis. Ratings
apply for zero or negative gate voltage; however, positive gate voltage shall
not be applied concurrent with negative potential on the anode. Blocking
voltages shall not be tested with a constant current source such that the
voltage ratings of the devices are exceeded.
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
SCRs
8 AMPERES RMS
50 thru 400 VOLTS
Device Package Shipping
ORDERING INFORMATION
C
G
A
TO−220AB
CASE 221A−09
STYLE 3
1
2
3
4
www.onsemi.com
MARKING
DIAGRAM
A = Assembly Location
Y = Year
WW = Work Week
MCR218x = Device Code
x = 2, 4 or 6
G = Pb−Free Package
AKA = Diode Polarity
MCR218−2G TO220AB
(Pb−Free)
500 Units/Bulk
MCR218−4G TO220AB
(Pb−Free)
500 Units/Bulk
MCR218−6G TO220AB
(Pb−Free)
500 Units/Bulk
AY WW
MCR218x−G
AKA
