Thyristors Datasheet
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 02/15/21
1
2N6344
Surface Mount – 600-800V
Blocking Voltage to 800 V
All Diffused and Glass
Passivated Junctions for
Greater Parameter Uniformity
and Stability
Small, Rugged, Thermowatt
Construction for Low Thermal
Resistance, High Heat
Dissipation and Durability
Gate Triggering Guaranteed in
all Four Quadrants
For 400 Hz Operation,
Consult Factory
Pb−Free Package is Available
Features
The 2N6344 is designed primarily for full-wave AC control applications,
such as light dimmers, motor controls, heating controls and power
supplies; or wherever full-wave silicon gate controlled solid-state
devices are needed. Triac type thyristors switch from a blocking to
a conducting state for either polarity of applied anode voltage with
positive or negative gate triggering.
Description
Functional Diagram
Additional Information
Pin Out
CASE 221A
STYLE 4
1
2
Pb
Resources Accessories Samples
Thyristors Datasheet
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 02/15/21
2
2N6344
Surface Mount – 600-800V
Rating Symbol Value Unit
*Peak Repetitive Off-State Voltage (Note 1)
(TJ = -40 to 110°C, Sine Wave, 50 to 60 Hz, Gate Open)
2N6344
2N6349
VDRM,
VRRM
600
800 V
† On-State RMS Current (TC = +80°C)
Full Cycle Sine Wave 50 to 60 Hz (TC = +90°C) IT (RMS)
8.0
4.0 A
† Peak Non−Repetitive Surge Current
(One Full Cycle, Sine Wave 60 Hz, TC = +25°C) Preceded and followed by rated current ITSM 100 A
Circuit Fusing Considerations (t = 8.3 ms) I2
t40 A²s
†Peak Gate Power (TC = +80°C, Pulse Width = 2 µs) PGM 20 W
†Average Gate Power (TC = +80°C, t = 8.3 ms) PG(AV) 0.5 W
†Peak Gate Current (TC = +80°C, Pulse Width = 2.0 µs) IGM 2.0 A
†Peak Gate Voltage (TC = +80°C, Pulse Width = 2.0 µs) VGM 10 V
†Operating Junction Temperature Range TJ-40 to +125 °C
Storage Temperature Range Tstg -40 to +150 °C
Maximum Ratings and Thermal Characteristics (TJ = 25°C unless otherwise noted)
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.
† Indicates JEDEC Registered Data.
1. VDRM and VRRM for all types can be applied on a continuous basis. 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
Thermal Resistance, Junction to Case R8JC 2.2 °C/W
Maximum Lead Temperature for Soldering Purposes, 1/8” from case for 10 seconds TL260 °C
† Indicates JEDEC Registered Data.
Electrical Characteristics - OFF (TC = 25°C unless otherwise noted; Electricals apply in both
directions)
Characteristic Symbol Min Ty p Max Unit
*Peak Repetitive Blocking Current
(VD = VDRM = VRRM; Gate Open)
TJ = 25°C
TJ = 100°C
IDRM,
IRRM
- - 10 µA
- - 2.0 mA
Thyristors Datasheet
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 02/15/21
3
2N6344
Surface Mount – 600-800V
Electrical Characteristics - ON (TC = 25°C unless otherwise noted; Electricals apply in both
directions)
Characteristic Symbol Min Ty p Max Unit
†Peak On−State Voltage
(ITM = ±11 A Peak; Pulse Width = 1 to 2 ms, Duty Cycle ≤ 2%) VTM -1. 3 1.55 V
Gate Trigger Current (Continuous dc) (VD = 12 Vdc, RL = 100 Ω)
Quadrant I: MT2(+), G(+) Both
IGT
-12 50
mA
Quadrant II: MT2(+), G(−) 2N6349 only - 12 75
Quadrant III: MT2(−), G(−) Both - 20 50
Quadrant IV: MT2(−), G(+) 2N6349 only - 35 75
†MT2(+), G(+); MT2(−), G(−) TC = −40°C - - 100
†MT2(+), G(−); MT2(−), G(+) TC = −40°C - - 125
Gate Trigger Voltage (Continuous dc) (VD = 12 Vdc, RL = 100 Ω)
Quadrant I: MT2(+), G(+) Both
VGT
0.9 2.0
V
Quadrant II: MT2(+), G(−) 2N6349 only 0.9 2.5
Quadrant III: MT2(−), G(−) Both 1. 1 2.0
Quadrant IV: MT2(−), G(+) 2N6349 only 1. 4 2.5
†MT2(+), G(+); MT2(−), G(−) TC = −40°C - 2.5
†MT2(+), G(−); MT2(−), G(+) TC = −40°C - 3.0
Gate Non−Trigger Voltage (Continuous dc)
(VD = Rated VDRM, RL = 10 k Ω, TJ = 100°C) †MT2(+), G(+); MT2(−), G(−); MT2(+), G(−); MT2(−), G(−) VGD 0.2 - - V
†Holding Current (VD = 12 Vdc, Gate Open) TC = 25°C
(Initiating Current = 200 mA) *TC = −40°C
TC = 25°C IH
- 6.0 40 mA
TC = -40°C - - 75
†Turn-On Time (VD = Rated VDRM, ITM = 11 A, IGT = 120 mA, Rise Time = 0.1 µs, Pulse Width = 2 µs) tgt - 8 10 µs
†Indicates JEDEC Registered Data.
Dynamic Characteristics
Characteristic Symbol Min Ty p Max Unit
Critical Rate of Rise of Commutation Voltage (VD = Rated VDRM, ITM = 11 A, Commutating di/
dt = 4.0 A/ms, Gate Unenergized, TC = 80°C) dv/dt(c) 5.0 V/µs
Voltage Current Characteristic of Triacs (Bidirectional Device)
I
I
I
I
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
IHHolding Current
Thyristors Datasheet
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 02/15/21
4
2N6344
Surface Mount – 600-800V
VI tnardauQIII tnardauQ
I tnardauQII tnardauQ
I
Quadrant Definitions for a Triac
All polarities are referenced to MT1.
With in−phase signals (using standard AC lines) quadrants I and III are used.
Figure 1. RMS Current Derating
Ratings and Characteristic Curves
Figure 2. On−State Power Dissipation
Thyristors Datasheet
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 02/15/21
5
2N6344
Surface Mount – 600-800V
Figure 3. Typical Gate Trigger Voltage Figure 4. Typical Gate Trigger Current
Figure 8. Typical Holding CurrentFigure 7. Maximum On-State Characteristics
Figure 9. Maximum Allowable Surge Current
Thyristors Datasheet
© 2021 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: GD. 02/15/21
6
2N6344
Surface Mount – 600-800V
Figure 10. Thermal Response
Dimensions
Part Marking System
G
A
K
L
V
G
D
N
Z
H
Q
FB
1212 33
4
SEATIN
PLANE
S
R
J
U
TC
CASE 221A
STYLE 4
1
2
Dim Inches Millimeters
Min Max Min Max
A0.590 0.620 14.99 15.75
B0.380 0.420 9.65 10.67
C0.178 0.188 4.52 4.78
D0.025 0.035 0.64 0.89
F0.142 0.147 3.61 3.73
G0.095 0.105 2.41 2.67
H0.110 0.13 0 2.79 3.30
J0.018 0.024 0.46 0.61
K0.540 0.575 13.72 14.61
L0.060 0.075 1.52 1.91
N0.195 0.205 4.95 5.21
Q0.105 0.115 2.67 2.92
R0.085 0.095 2.16 2.41
S0.045 0.060 1. 14 1.52
T0.235 0.255 5.97 6.47
U0.000 0.050 0.00 1.27
V0.045 - 1. 15 -
Z- 0.080 - 2.04
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.
Pin Assignment
1Main Terminal 1
2Main Terminal 2
3 Gate
4Main Terminal 2
Ordering Information
Device Package Shipping†
2N6344 TO-220AB
1000 Units / Box
2N6344G TO-220AB
(Pb-Free)
2N6344G
YMAXX
Y =Year
M =Month
A =Assembly Site
XX =Lot Serial Code
G =Pb-Free Package
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