Thyristors
Surface Mount – 50V - 400V > MCR218-2G, MCR218-4G, MCR218-6G
MCR218-2G, MCR218-4G, MCR218-6G
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
• Glass-Passivated
Junctions
• Blocking Voltage to 400
Volts
• TO-220 Construction −
Low Thermal Resistance,
High Heat Dissipation and
Durability
Functional Diagram
Pin Out
CASE 221A
STYLE 4
1
Additional Information
2
Datasheet
Resources
Samples
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 07/15/19
Thyristors
Surface Mount – 50V - 400V > MCR218-2G, MCR218-4G, MCR218-6G
Maximum Ratings (TJ = 25°C unless otherwise noted)
Rating
Symbol
Value
Unit
VDRM,
VRRM
50
V
ITM (RMS)
12
A
Peak Discharge Current (Note 2)
ITM
300
A
Average On-State Current
(180º Conduction Angles; TC = 85ºC)
IT(AV)
8.0
A
Peak Non-Repetitive Surge Current
(1/2 Cycle, Sine Wave 60 Hz, TJ = 125°C)
ITSM
100
A
Peak Repetitive Off−State Voltage (Note 1)
(− 40 to 125°C, Sine Wave, 50 to 60 Hz, Gate Open)
MCR68-2
On-State RMS Current
(180º Conduction Angles; TC = 85ºC)
Circuit Fusing Consideration (t = 8.3 ms)
I2t
40
A²sec
Forward Peak Gate Current (Pulse Width ≤ 1.0 µsec, TC= 80°C)
IGM
2.0
A
W
Forward Peak Gate Current (Pulse Width ≤ 1.0 µsec, TC= 85°C)
IGM
20
PG(AV)
0.5
W
Operating Junction Temperature Range
TJ
-40 to +125
°C
Storage Temperature Range
Tstg
-40 to +150
°C
−
8.0
in. lb.
Forward Average Gate Power (t = 8.3 ms, TC = 85ºC)
Mounting Torque
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal
operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability
may be affected.
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.
2. Ratings apply for tw = 1 ms. See Figure 1 for ITM capability for various duration of an exponentially decaying current waveform, tw is defined as 5 time constants
of an exponentially decaying current pulse.
Thermal Characteristics
Rating
Symbol
Value
Unit
RƟJC
RƟJA
2.0
60
°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)
Symbol
Min
Typ
Max
IDRM,
IRRM
-
-
10
-
-
2.0
TJ = 25°C
TJ = 125°C
Unit
mA
Electrical Characteristics - ON (TJ = 25°C unless otherwise noted)
Characteristic
Peak Forward On−State Voltage (Note 2)
(ITM = 32 A)(ITM = 24 A) (Note 3)
(ITM = 300 A, tw = 1 ms) (Note 4)
Symbol
Min
Typ
Max
Unit
VTM
_
_
_
6.0
2.2
_
V
Gate Trigger Current (Continuous dc) (VD = 12 V; RL = 100 Ω)
IGT
2.0
7.0
30
mA
Gate Trigger Voltage (Continuous dc) (VD = 12 V; RL = 100 Ω)
VGT
_
0.65
1.5
V
Gate Trigger Non-Current (Continuous dc) (VD = 12 V; RL = 100 Ω)
VGD
0.2
0.40
_
V
Holding Current
(VD = 12 V, Initiating Current = 200 mA, Gate Open))
IH
3.0
15
50
mA
Latch Current (VD = 12 V, IG = 30 mA)
IL
_
35
80
mA
VGT
_
1.0
_
µs
Gate Controlled Turn-On Time (Note 5)
(VD = Rated VDRM, IG = 150 mA) (ITM = 24 A Peak)
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 07/15/19
Thyristors
Surface Mount – 50V - 400V > MCR218-2G, MCR218-4G, MCR218-6G
Dynamic Characteristics
Symbol
Min
Typ
Max
Unit
Critical Rate of Rise of Off−State Voltage
(VD = Rated VDRM, Exponential Waveform, Gate Open, TJ = 125ºC)
Characteristic
dv/dt
10
−
−
V/µs
Critical Rate of Rise of On−State Current
TJ = 125ºC
IG = 150 A
di/dt
−
−
75
A/µs
3. Pulse duration ≤ 300 µs, duty cycle ≤ 2%.
4. Ratings apply for tw = 1 ms. See Figure 1 for ITM capability for various durations of an exponentially decaying current waveform. tw is defined as 5 time constants
of an exponentially decaying current pulse.
5. The gate controlled turn-on time in a crowbar circuit will be influenced by the circuit inductance.
Voltage Current Characteristic of SCR
Symbol
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
+Current
Parameter
Holding Current
VTM
On State
IRRM at VRRM
IH
Quadrant 3
Main Terminal 2-
Quadrant 1
Main Terminal 2+
IH
Off State
+Voltage
IDRM at VDRM
VTM
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 07/15/19
Thyristors
Surface Mount – 50V - 400V > MCR218-2G, MCR218-4G, MCR218-6G
Figure 1. Current Derating
Figure 2. On−State Power Dissipation
°
125
115
α
α = CONDUCTION ANGLE
105
95
dc
85
TC
75
α = 30°
60°
90° 120°
180°
0
IT(AV)
Figure 3. Typical Gate Trigger Current vsTemperature
Figure 4. Typical Gate Trigger Voltage vs Temperature
Figure 5. Typical Holding Current vs Temperature
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 07/15/19
Thyristors
Surface Mount – 50V - 400V > MCR218-2G, MCR218-4G, MCR218-6G
Dimensions
Part Marking System
4
SEATING
PLANE
4
12
1
2
3
MCR218x
x
Y
M
A
AKA
G
Inches
Dim
YMAXX
MCR218x-G
AKA
TO-220AM
Case 221A
Style 12
3
Millimeters
=Device Code
=2, 4, or 6
=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
Package
Shipping
TO-220AB
(Pb-Free)
500 Units / Box
MCR218–2G
MCR218–4G
MCR218-6G
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.
© 2019 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 07/15/19
