UTC UT137FF/FG TRIAC
UTC UNISONIC TECHNOLOGIES CO., LTD. 1
QW-R401-016,B
TRIACS
DESCRIPTION
Passivated triacs in a full pack plastic envelope, intended for use
in applications requiring high bidirectional transient and blocking
voltage capability and high thermal cycling performance. Typical
applications include motor control, industrial and domestic
lighting, heating and static switching.
SYMBOL
MT2
MT1
G
TO-220F
1
1:MT1 2:MT2 3:GATE
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL RATINGS UNIT
Repetitive Peak Off State Voltage
UT137FF/FG-5
UT137FF/FG-6
UT137FF/FG-8
VDRM
500*
600*
800
V
RMS On-state Current (Full sine wave, Ths≤73°C) IT(RMS) 8 A
Non-Repetitive Peak. On-State Current
(Full sine wave, Tj=125°C prior to surge,with reapplied VDRM(max)
t=20ms
t=16.7ms
ITSM
55
60
A
I2t For Fusing (t=10ms) I2t 21 A2s
Repetitive Rate of Rise of On-state Current after Triggering
ITM=12A,IG=0.2A,dIG/dt=0.2A/µs
T2+ G+
T2+ G-
T2- G-
T2- G+
dIT /dt
50
50
50
10
A/µs
Peak Gate Voltage VGM 5 V
Peak Gate Current IGM 2 A
Peak Gate Power PGM 5 W
Average Gate Power (Over any 20ms period) PG(AV) 0.5 W
Operating Junction Temperature Tj 125 °C
Storage Temperature Tstg -40~150 °C
*Although not recommended, off-state voltages up to 800V may be applied without damage, but the triac may switch
to the on-state. The rate of rise of current should not exceed 6A/µs.
UTC UT137FF/FG TRIAC
UTC UNISONIC TECHNOLOGIES CO., LTD. 2
QW-R401-016,B
ISOLATION LINITING VALUE & CHARACTERISTIC(Ths=25°C,unless otherwise specified)
PARAMETER SYMBOL MIN TYP MAX UNIT
Repetitive paek voltage form all three terminals to
external heatsink (R.H.≦65%,clean and dustfree) Visol
1500 V
Capacitance from MT2 to external heatsink (f=1MHz) Cisol 12 pF
THERMAL RESISTANCES
PARAMETER SYMBOL MIN TYP MAX UNIT
Thermal Resistance Junction to heatsink
(full or half cycle) with heatsink compound
without heatsink compound
Rth j-hs
4.5
6.5
K/W
Thermal Resistance Junction to Ambient (In free air) Rth j-a 55 K/W
STATIC CHARACTERISTICS (Tj=25°C,unless otherwise specified)
MAX PARAMETER SYMBOL CONDITIONS MIN TYP
UT137FF UT137FG
UNIT
Gate trigger current
IGT
VD=12V, IT=0.1A
T2+ G+
T2+ G-
T2- G-
T2- G+
5
8
11
30
25
25
25
70
50
50
50
100
mA
Latching current
IL
VD=12V, IGT=0.1A
T2+ G+
T2+ G-
T2- G-
T2- G+
7
16
5
7
30
45
30
45
45
60
45
60
mA
Holding current IH VD = 12 V, IGT = 0.1 A 5 20 40 mA
On-state voltage VT IT=10A 1.3 1.65 V
VD=12V, IT=0.1A 0.7 1.5 V Gate trigger voltage VGT VD=400V, IT=0.1A, Tj=125°C 0.25 0.4 V
Off-state leakage current ID VD=VDRM(max) , Tj=125°C 0.1 0.5 mA
DYNAMIC CHARACTERISTICS(Tj=25°C,unless otherwise specified)
MIN
PARAMETER SYMBOL CONDITIONS UT137FF UT137FG TYP MAX UNIT
Critical rate of rise of
Off-state voltage dVD /dt
VDM = 67% VDRM(max) ; Tj =125°C;
exponential waveform; gate open
circuit
50 200 250 V/µs
Critical rate of change of
Commutating voltage dVcom/dt
VDM=400V;Tj=95°C;IT(RMS)=8A;
dIcom /dt =3.6A/ms; gate open
circuit
10 20 V/µs
Gate controlled turn-on
time tgt ITM = 12 A; VD= VDRM(max) ; IG=0.1A;
dIG/dt=5A/µs 2 µs
UTC UT137FF/FG TRIAC
UTC UNISONIC TECHNOLOGIES CO., LTD. 3
QW-R401-016,B
TYPICAL CHARACTERISTICS
1ms
100us
10us
1000
T/s
Figure 2. Maximum Permissible Non-repetitive
Peak On-state Current ITSM,vs Pulse Width
tp,for Sinusoidal Currents,tp≦20ms
10
100
10ms 100ms
ITSM/A
Number of Cycles at 50Hz
Figure 3 .Maximum Permissible Non-Repetitive
peak on-state Current ITSM,vs Number of Cycles,
for Sinusoidal Currents,f=50Hz
10 100
ITSM/A
11000
100 150-50 50
0
1.6
0.8
Tj/℃
1.2
1.4
1
0.6
0.4
Figure 6.Normalised Gate Trigger Voltage VGT(Tj)/
VGT(25℃),vs Junction Temperature Tj
VGT(25℃)
VGT(Tj)
dIT/dt limit
T2-G+ quadrant
ITSM
time
Tj initial=25℃max
IT
70
40
80
60
20
0
50
30
10
IT
time
ITSM
Tj initial=25℃max
T
48
0
12
2
IT(RMS)/A
Figure 1.Maximum on -state Dissipation.Ptot vs RMS On-
state Current,IT(RMS),Whereα=Conduction Angle.
8
010
6
100 150-50 50
0
10
2
Ths/℃
4
0
71
116
80
125
107
Ptot/W Tsp(max)/C
α=180
α=120
α=90
α=60
α=30
Figure 4.Maximum Permissible RMS Current IT(RMS)
vs Heatsink Temperature Ths
IT(RMS)/A
73℃
α
α
4
10
26
89
98
6
8
25
10
Surge Duration /S
15
20
5
0
Figure 5.Maximum Permissible Repetitive RMS on-state
Current IT(RMS),vs Surge Duration,for Sinusoidal
Currents,f=50Hz;Ths≦73℃
0.01 0.1 110
IT(RMS)/A
UTC UT137FF/FG TRIAC
UTC UNISONIC TECHNOLOGIES CO., LTD. 4
QW-R401-016,B
1.5 2
01
0.5
25
VT/V
20
15
5
0
Figure 10.Typical and Maximum
On-state Characteristic
IT/A
Figure 7.Normalised Gate Trigger Current
IGT(Tj)/IGT(25℃),vs Junction Temperature Tj
100 150-50 50
0
3
1
Tj/℃
2
2.5
1.5
0.5
0
Figure 8.Normalised Latching Current
IL(Tj)/IL(25℃),vs Junction Temperature Tj
IL(25℃)
IL(Tj)
100 150-50 50
0
3
1
Tj/℃
2
2.5
1.5
0.5
0
Figure 9.Normalised Holding Current
IH(Tj)/IH(25℃),vs Junction Temperature Tj
IH(25℃)
IH(Tj)
Figure 12.Typical commutation dV/dt vs junction
temperature,parameter commutation dlT/dt.The triac should
commutate when the dV/dt is below the value on the
appropriate curve for pre-commutation dlT/dt
2.5 3
10
dV/dt(V/us)
1000
10
100
1100 150
50
0
Tj/℃
IGT(25℃)
IGT(Tj)
100 150-50 500
3
1
Tj/℃
2
2.5
1.5
0.5
0
T2+G+
T2+G-
T2-G-
T2-G+
UT137FG
UT137FF
off-state dV/dt limit
dlcom/dt=10A/
ms 7.9 3.64.7 2.8
6.1
typ
max
Vo=1.264V
Rs=0.0378Ohms
Tj=125℃
Tj=125℃
tp/s
Figure 11.Transient Thermal Impedance
Zth j-hs,vs Pulse Width tp
1ms
0.1ms10us
0.01
0.1
10ms 0.1s 1s 10s
1
10
tp
t
PD
bidirectional
unidirectional
with heatsink compound
without heatsink compound
Zth j-hs (K/W )
UTC UT137FF/FG TRIAC
UTC UNISONIC TECHNOLOGIES CO., LTD. 5
QW-R401-016,B
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
