T1235T-8G
12 A Snubberless™ Triac
Datasheet -production data
Description
Available in SMD, the T1235T-8G Triac can be
used for the on/off or phase angle control
function in general purpose AC switching where
high commutation capability is required. This
device can be used without a snubber RC circuit
when the limits defined are respected.
A2
A1
A2
D²PAK package is UL94-V0 flammability resin
compliance.
G
Package environmentally friendly Ecopack®2
graded (RoHS and Halogen Free compliance).
D²PAK
Snubberless™ is a trademark of
STMicroelectronics.
Features
High static dV/dt
High dynamic turn-off commutation (dl/dt)c
150 °C maximum Tj
Three quadrants
Surge capability VDSM, VRSM = 900 V
Figure 1: Functional diagram
A2
A2: Anode2
Benefits
A1: Anode1
G: Gate
High immunity to turn-on thanks to high
static dV/dt
Better turn-off in high temperature
environments thanks to (dI/dt)c
Increase of thermal margin due to extended
working Tj up to 150 °C
Good thermal resistance due to
non-insulated tab
Applications
General purpose AC line load switching
Motor control circuits
Home appliances
Heating
Lighting
Inrush current limiting circuits
Overvoltage crowbar protection
December 2017
G
A1
Table 1: Device summary
Symbol
Value
Unit
IT(RMS)
12
A
VDRM/VRRM
800
V
VDSM/VRSM
900
V
IGT
35
mA
DocID031279 Rev 1
This is information on a product in full production.
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www.st.com
Characteristics
1
T1235T-8G
Characteristics
Table 2: Absolute maximum ratings (limiting values)
Symbol
IT(RMS)
ITSM
I2 t
dl/dt
Parameter
12
Non repetitive surge peak on-state current,
Tj initial = 25 °C
tp = 16.7 ms
95
tp = 20 ms
90
I2t value for fusing
Tj initial = 25 °C
54
A2s
Critical rate of rise of on-state current,
IG = 2 x IGT, tr ≤ 100 ns
f = 100 Hz
100
A/µs
Tj = 150 °C
600
V
Tj = 125 °C
800
V
tp = 10 ms
900
V
Tj = 150 °C
4
A
Tj = 150 °C
1
W
Storage junction temperature range
-40 to +150
°C
Operating junction temperature range
-40 to +150
°C
VDSM/VRSM
Non Repetitive peak off-state voltage
Tstg
Tj
A
Tc = 124 °C
Repetitive peak off-state voltage
PG(AV)
Unit
RMS on-state current (full sine wave)
VDRM/VRRM
IGM
Value
Peak gate current
tp = 20 µs
Average gate power dissipation
A
Table 3: Electrical characteristics (Tj = 25 °C, unless otherwise specified)
Symbol
Test conditions
Value
Unit
VD = 12 V, RL = 33 Ω
I - II - III
Min.
1.75
mA
VD = 12 V, RL = 33 Ω
I - II - III
Max.
35
mA
VGT
VD = 12 V, RL = 33 Ω
I - II - III
Max.
1.3
V
VGD
VD = VDRM, RL = 3.3 kΩ, Tj = 150 °C
I - II - III
Min.
0.2
V
IG = 1.2 x IGT
I - III
Max.
60
mA
IG = 1.2 x IGT
II
Max.
80
mA
Max.
40
mA
IGT
IL
IH(1)
dV/dt (1)
(dl/dt)c(1)
IT = 500 mA, gate open
VD = 536 V, gate open
Tj = 125 °C
Min.
2000
V/µs
VD = 402 V, gate open
Tj = 150 °C
Min.
1000
V/µs
Tj = 125 °C
Min.
12
A/ms
Tj = 150 °C
Min.
6
A/ms
Without snubber, (dV/dt)c > 20 V/µs
Notes:
(1)For
2/10
Quadrants; Tj
both polarities of A2 referenced to A1.
DocID031279 Rev 1
T1235T-8G
Characteristics
Table 4: Static characteristics
Symbol
Test conditions
Tj
Value
Unit
Max.
1.6
V
150 °C
Max.
0.85
V
150 °C
Max.
50
mΩ
VTM(1)
IT = 17 A, tp = 380 µs
25 °C
VTO(1)
Threshold on-state voltage
RD(1)
Dynamic resistance
25 °C
VDRM = VRRM = 800 V
IDRM/IRRM
VDRM = VRRM = 600 V
5
µA
1
mA
3.1
mA
Max.
125°C
150 °C
Max.
Notes:
(1)For
both polarities of A2 referenced to A1.
Table 5: Thermal resistance
Symbol
Rth(j-c)
Parameter
Junction to case (AC)
D²PAK
DocID031279 Rev 1
Max.
Value
Unit
1.6
°C/W
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Characteristics
1.1
T1235T-8G
Characteristics (curves)
Figure 3: On-state RMS current versus case
temperature
Figure 2: Maximum power dissipation versus onstate RMS current
IT(RMS)(A)
P(W)
18
16
α = 180°
16
α = 180°
14
12
12
10
8
8
6
4
4
180°
2
Tc(°C)
0
IT(RMS)(A)
0
0
0
2
4
6
8
10
25
50
75
100
125
150
12
Figure 4: On-state RMS current versus ambient
temperature (free air convection)
Figure 5: Relative variation of thermal impedance
versus pulse duration
IT(RMS)(A)
K = [Zth/Rth]
4.0
1.0E+00
α = 180
3.5
Zth(j-c)
D2PAK
3.0
Scu = 1 cm2
Epoxy PCB FR4 copper thickness = 35 µm
2.5
2.0
1.0E-01
1.5
1.0
0.5
tp(s)
Ta(°C)
0.0
0
25
50
75
100
125
150
Figure 6: Relative variation of gate trigger voltage
and current versus junction temperature
(typical values)
IGT,VGT[Tj] / IGT,VGT[Tj = 25 °C]
1.0E-02
1.0E-03
1.0E-02
1.0E-01
1.0E+00
1.0E+01
1.0E+02
1.0E+03
Figure 7: Relative variation of holding current and
latching current versus junction temperature
(typical values)
IH,IL [Tj] / IH,IL [Tj = 25 °C]
2.0
2.0
IGT Q1-Q2
1.5
1.5
1.0
1.0
VGT Q1-Q2-Q3
IL
0.5
0.5
IGT Q3
Tj (°C)
0.0
-50
4/10
IH
Tj (°C)
0.0
-25
0
25
50
75
100
125
150
-50
DocID031279 Rev 1
-25
0
25
50
75
100
125
150
T1235T-8G
Characteristics
Figure 9: Non repetitive surge peak on-state
current for a sinusoidal pulse with width tp < 10 ms
Figure 8: Surge peak on-state current versus
number of cycles
ITSM (A)
ITSM(A)
100
10000
Tj initial=25°C
dI/dt limitation:
100A/µs
t=20ms
O ne c yc le
Non repetitive
Tj initial = 25 °C
1000
50
100
Repetitive
Tc = 124°C
t p (ms)
Number of cycles
10
0.01
0
1
10
100
1000
1.00
10.00
Figure 11: Relative variation of critical rate of
decrease of main current versus junction
temperature
Figure 10: On-state characteristics
(maximum values)
(dl/dt)c [Tj] / (dl/dt)c [Tj = 150 °C]
ITM(A)
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
100
Tj = 25 °C
Tj = 150 °C
10
Tj max.
Vto = 0.85 V
Rd = 50 mΩ
VTM(V)
1
0
0.10
1
2
3
4
5
Tj(°C)
25
50
75
100
125
150
Figure 13: Relative variation of leakage current
versus junction temperature for different values of
blocking voltage
Figure 12: Relative variation of static dV/dt
immunity versus junction temperature
IDRM, IRRM at [Tj] / IDRM, IRRM at [Tj max.]*
dV/dt [Tj] / dV/dt [Tj = 150 °C]
1.0E+00
6
VD = VR = 402 V
5
4
1.0E-01
VDRM = VRRM = 800 V
3
VDRM = VRRM = 600 V
2
1.0E-02
1
*[Tj max = 125 °C; VDRM, VRRM = 800 V]
[Tj max = 150 °C; V DRM, V RRM = 600 V] T (°C)
j
Tj(°C)
0
25
50
75
100
125
150
1.0E-03
25
DocID031279 Rev 1
50
75
100
125
5/10
150
Package information
2
T1235T-8G
Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
2.1
ECOPACK®2 compliant
Lead-free package leads finishing
Molding compound resin is halogen-free and meets UL standard level V0
D²PAK package information
Figure 14: D²PAK package outline
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DocID031279 Rev 1
Package information
T1235T-8G
Table 6: D²PAK package mechanical data
Dimensions
Ref.
Inches(1)
Millimeters
Min.
Typ.
Max.
Min.
Typ.
Max.
A
4.30
4.60
0.1693
0.1811
A1
2.49
2.69
0.0980
0.1059
A2
0.03
0.23
0.0012
0.0091
A3
0.0098
0.25
b
0.70
0.93
0.0276
0.0366
b2
1.25
1.7
0.0492
0.0669
c
0.45
0.60
0.0177
0.0236
c2
1.21
1.36
0.0476
0.0535
D
8.95
9.35
0.3524
0.3681
D1
7.50
8.00
0.2953
0.3150
D2
1.30
1.70
0.0512
0.0669
e
2.54
E
10.00
10.28
0.3937
0.4047
E1
8.30
8.70
0.3268
0.3425
E2
6.85
7.25
0.2697
0.2854
G
4.88
5.28
0.1921
0.2079
H
15
15.85
0.5906
0.6240
L
1.78
2.28
0.0701
0.0898
L2
1.27
1.40
0.0500
0.0551
L3
1.40
1.75
0.0551
R
V2
0.1
0.40
0°
0.0689
0.0157
8°
0°
8°
Notes:
(1)Dimensions
in inches are given for reference only
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Package information
T1235T-8G
Figure 15: D²PAK recommended footprint (dimensions are in mm)
Figure 16: D²PAK stencil definitions (dimensions are in mm)
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DocID031279 Rev 1
Ordering information
T1235T-8G
3
Ordering information
Figure 17: Ordering information scheme
T 12
35
T -
8
G - TR
Snubberless™ TRIAC
RMS current
12 = 12 A
IGT current
35 = 35 mA
Specific application
T = increased (dl/dt) and dV/dt producing reduced ITSM
Voltage
8 = 800 V
Package
G = D²PAK
Packing
Blank = Tube
-TR = Tape and reel
Table 7: Ordering information
Order code
T1235T-8G-TR
T1235T-8G
4
Marking
Package
Weight
T1235T-8G
D²PAK
1.38 g
Base qty.
Delivery mode
1000
Tape and reel
50
Tube
Revision history
Table 8: Document revision history
Date
Revision
19-Dec-2017
1
Changes
Initial release.
DocID031279 Rev 1
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T1235T-8G
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Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2017 STMicroelectronics – All rights reserved
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