Thyristors Datasheet
MCR12DG, MCR12MG, MCR12NG
Silicon Controlled Rectifiers —
400V - 800V
Pb
Description
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
■ Blocking Voltage to 800 Volts
■ On−State Current Rating of
12 Amperes RMS at 80°C
■ High Surge Current Capability
− 100 Amperes
■ Rugged, Economical
TO−220AB Package
Additional Information
■ Minimum and Maximum
Values of IGT, VGT an IH
Specified for Ease of Design
■ High Immunity to dv/dt − 100
V/μsec Minimum at 125°C
■ These are Pb−Free devices
■ Glass Passivated Junctions
for Reliability and Uniformity
Pin Out
Resources
Accessories
Samples
Functional Diagram
CASE 221A
STYLE 4
1
1
2
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 05/24/21
Thyristors Datasheet
MCR12DG, MCR12MG, MCR12NG
Silicon Controlled Rectifiers —
400V - 800V
Maximum Ratings (TJ = 25°C unless otherwise noted)
Rating
Part Number
Symbol
Value
Unit
VDRM,
VRRM
400
600
800
V
12
A
MCR12DG
MCR12MG
MCR12NG
Peak Repetitive Off-State Voltage (Note 1)
(TJ = -40 to 125°C, Sine Wave, 50 to 60 Hz, Gate Open)
On-State RMS Current (180° Conduction Angles; TC = 80°C)
IT
(RMS)
Peak Non-repetitive Surge Current (1/2 Cycle, Sine Wave 60 Hz, TJ = 125°C)
ITSM
100
A
Circuit Fusing Consideration (t = 8.3 ms)
I2t
41
A2sec
PGM
5.0
W
Forward Average Gate Power (t = 8.3 ms, TC = 80°C)
Forward Peak Gate Power (Pulse Width ≤ 1.0 µs, TC = 80°C)
PG (AV)
0.5
W
Average On-State Current (180° Conduction Angles; TC = 80°C)
IT(AV)
7.8
A
Forward Peak Gate Current (Pulse Width ≤ 1.0 s, TC = 90°C)
IGM
2.0
A
Operating Junction Temperature Range
TJ
-40 to +125
°C
Storage Temperature Range
Tstg
-40 to +150
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the
Recommended Operating Conditions may affect device reliability.
1. VDRM and VRRM 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.
Thermal Characteristics
Rating
Symbol
Value
Unit
RƟJC
RƟJA
2.2
62.5
°C/W
TL
260
°C
Junction−to−Case (AC)
Junction−to−Ambient
Thermal Resistance,
Maximum Lead Temperature for Soldering Purposes, 1/8” from case for
10 seconds
Electrical Characteristics - OFF (TJ = 25°C unless otherwise noted)
Characteristic
Peak Repetitive Forward or Reverse Blocking Current
(VD = Rated VDRM and VRRM; Gate Open)
TJ = 25°C
TJ = 125°C
Symbol
Min
Typ
Max
IDRM,
IRRM
-
-
0.01
-
-
2.0
Min
Typ
Max
Unit
mA
Electrical Characteristics - ON
Characteristic
Symbol
Unit
Peak Forward On−State Voltage (Note 2) (ITM = 24 A)
VTM
−
–
2.2
V
Gate Trigger Current (Continuous dc) (VD = 12 V, RL = 100 Ω)
IGT
2.0
8.0
20
mA
Holding Current (VD = 12 V, Initiating Current = 200 mA, Gate Open)
IH
4.0
20
40
mA
IL
6.0
25
60
mA
VGT
0.5
0.65
1.0
V
Latch Current (VD = 12 V, IG = 20 mA)
Gate Trigger Voltage (Continuous dc) (VD = 12 Vdc, RL = 100 Ω)
Dynamic Characteristics
Characteristic
Critical Rate−of−Rise of Off-State Voltage
(VD = Rated VDRM, Exponential Waveform, Gate Open, TJ = 125°C)
Repetitive Critical Rate of Rise of On−State Current
IPK = 50 A, Pw = 40 µsec, diG/dt = 1 A/µsec, Igt = 50 mA
Symbol
Min
Typ
Max
Unit
dv/dt
100
250
−
V/µs
di/dt
–
–
50
A/µs
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different
conditions.
2. Indicates Pulse Test: Pulse Width ≤ 2.0 ms, Duty Cycle ≤ 2%.
2
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 05/24/21
Thyristors Datasheet
MCR12DG, MCR12MG, MCR12NG
Silicon Controlled Rectifiers —
400V - 800V
Voltage Current Characteristic of SCR
Symbol
Parameter
VDRM
Peak Repetitive Forward Off State Voltage
IDRM
Peak Forward Blocking Current
VRRM
Peak Repetitive Reverse Off State Voltage
IRRM
Peak Reverse Blocking Current
VTM
Maximum On State Voltage
IH
Holding Current
Figure 1.
Typical RMS Current Derating
Figure 2.
On-State Power Dissipation
Figure 3.
Typical On−State Characteristics
Figure 4.
Typical Gate Trigger Current vs Junction Temp
3
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 05/24/21
Thyristors Datasheet
MCR12DG, MCR12MG, MCR12NG
Silicon Controlled Rectifiers —
400V - 800V
Figure 5.
Typical Holding Current vs Junction Temp
Figure 6.
Typical Gate Trigger Voltage vs Junction Temp
Figure 7.
Typical Latching Current vs Junction Temp
4
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 05/24/21
Thyristors Datasheet
MCR12DG, MCR12MG, MCR12NG
Silicon Controlled Rectifiers —
400V - 800V
Dimensions
Part Marking System
4
SEATING
PLANE
4
12
TO-220AM
3
1
2
3
x
Y
M
A
AKA
G
Inches
Dim
Millimeters
YMAXX
MCR12xG
AKA
=D, M, or N
=Year
=Month
=Assembly Site
=Diode Polarity
=Pb-Free Package
Pin Assignment
Min
Max
Min
Max
1
Cathode
A
0.590
0.620
14.99
15.75
2
Anode
B
0.380
0.420
9.65
10.67
3
Gate
C
0.178
0.188
4.52
4.78
4
Anode
D
0.025
0.035
0.64
0.89
F
0.142
0.147
3.61
3.73
G
0.095
0.105
2.41
2.67
H
0.110
0.130
2.79
3.30
J
0.018
0.024
0.46
0.61
K
0.540
0.575
13.72
14.61
L
0.060
0.075
1.52
1.91
N
0.195
0.205
4.95
5.21
Q
0.105
0.115
2.67
2.92
R
0.085
0.095
2.16
2.41
S
0.045
0.060
1.14
1.52
T
0.235
0.255
5.97
6.47
U
0.000
0.050
0.00
1.27
V
0.045
---
1.15
---
Z
---
0.080
---
2.04
Ordering Information
Device
MCR12DG
MCR12MG
MCR12NG
Package
Shipping
TO-220AB
(Pb-Free)
1000 Units / Box
1. Dimensioning and tolerancing per ansi y14.5m, 1982.
2. Controlling dimension: inch.
3. Dimension z defines a zone where all body and lead irregularities are allowed.
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are
not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at http://www.littelfuse.com/disclaimer-electronics.
5
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 05/24/21
