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PDF MCR68-2 Data sheet ( Hoja de datos )
| Número de pieza | MCR68-2 | |
| Descripción | Silicon Controlled Rectifiers | |
| Fabricantes | Littelfuse | |
| Logotipo |  |
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MCR68−2
Silicon Controlled Rectifiers
Reverse Blocking Thyristors
Designed for overvoltage protection in crowbar circuits.
Features
• Glass-Passivated Junctions for Greater Parameter Stability and
Reliability
• Center-Gate Geometry for Uniform Current Spreading Enabling
High Discharge Current
• Small Rugged, Thermowatt Package Constructed for Low Thermal
Resistance and Maximum Power Dissipation and Durability
• High Capacitor Discharge Current, 300 Amps
• Pb−Free Package is Available
MAXIMUM RATINGS (TJ = 25°C unless otherwise noted)
Rating
Symbol Value
Peak Repetitive Off−State Voltage (Note 1)
(TJ = *40 to +125°C, Gate Open)
MCR68−2
VDRM,
VRRM
50
Unit
V
Peak Discharge Current (Note 2)
ITM 300 A
On-State RMS Current
(180° Conduction Angles; TC = 85°C)
IT(RMS)
12
A
Average On-State Current
(180° Conduction Angles; TC = 85°C)
IT(AV)
8.0
A
Peak Non-Repetitive Surge Current
(1/2 Cycle, Sine Wave, 60 Hz, TJ = 125°C)
Circuit Fusing Considerations (t = 8.3 ms)
ITSM
I2t
100 A
40 A2s
Forward Peak Gate Current
(t ≤ 1.0 ms, TC = 85°C)
IGM 2.0 A
Forward Peak Gate Power
(t ≤ 1.0 ms, TC = 85°C)
PGM 20 W
Forward Average Gate Power
(t = 8.3 ms, TC = 85°C)
PG(AV)
0.5
W
Operating Junction Temperature Range
TJ −40 to +125 °C
Storage Temperature Range
Tstg −40 to +150 °C
Mounting Torque
− 8.0 in. lb.
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.
Specifications subject to change without notice. © 2016 Littelfuse, Inc.
September 19, 2016 − Rev. 2
1
Littelfuse.com
SCRs
12 AMPERES RMS
50 VOLTS
G
AK
MARKING
DIAGRAM
1
23
TO−220AB
CASE 221A−07
STYLE 3
AY WW
MCR68−2G
AKA
A
Y
WW
G
AKA
= Assembly Location
= Year
= Work Week
= Pb−Free Package
= Diode Polarity
PIN ASSIGNMENT
1 Cathode
2 Anode
3 Gate
4 Anode
ORDERING INFORMATION
Device
Package
Shipping
MCR68−2
MCR68−2G
TO−220AB
TO−220AB
(Pb−Free)
500 Units / Box
500 Units / Box
Preferred devices are recommended choices for future use
and best overall value.
Publication Order Number:
MCR68/D
1 page  
MCR68−2
PACKAGE DIMENSIONS
TO−220AB
CASE 221A−07
ISSUE AA
BF
Q
H
Z
4
123
A
K
L
V
G
N
D
T
U
−T−
SEATING
PLANE
C
S
R
J
NOTES:
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.
INCHES
DIM MIN MAX
A 0.570 0.620
B 0.380 0.405
C 0.160 0.190
D 0.025 0.035
F 0.142 0.147
G 0.095 0.105
H 0.110 0.155
J 0.014 0.022
K 0.500 0.562
L 0.045 0.060
N 0.190 0.210
Q 0.100 0.120
R 0.080 0.110
S 0.045 0.055
T 0.235 0.255
U 0.000 0.050
V 0.045 −−−
Z −−− 0.080
MILLIMETERS
MIN MAX
14.48 15.75
9.66 10.28
4.07 4.82
0.64 0.88
3.61 3.73
2.42 2.66
2.80 3.93
0.36 0.55
12.70 14.27
1.15 1.52
4.83 5.33
2.54 3.04
2.04 2.79
1.15 1.39
5.97 6.47
0.00 1.27
1.15 −−−
−−− 2.04
STYLE 3:
PIN 1.
2.
3.
4.
CATHODE
ANODE
GATE
ANODE
Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military,
aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or
any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property
damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be
deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be
liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in
applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale,
unless otherwise agreed by Littelfuse.
Littelfuse.com
Specifications subject to change without notice. © 2016 Littelfuse, Inc.
September 19, 2016 − Rev. 2
5
Publication Order Number:
MCR68/D
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet MCR68-2.PDF ] | |
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