UNISONIC TECHNOLOGIES CO., LTD
UT138F/G
TRIACS
DESCRIPTION
Passivated triacs in a 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.
TRIAC
1
TO-220
SYMBOL
ORDERING INFORMATION
Order Number
Lead Free
UT138FL-x-TA3-T
UT138GL-x-TA3-T
Note: Pin Assignment: G: Gate
Halogen Free
UT138FG-x-TA3-T
UT138GP-x-TA3-T
Package
TO-220
TO-220
Pin Assignment
1
2
3
MT1
MT2
G
MT1
MT2
G
Packing
Tube
Tube
MARKING
UT138F
UT138G
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QW-R401-013.C
UT138F/G
ABSOLUTE MAXIMUM RATING
(T
J
=25°C)
PARAMETER
SYMBOL
TRIAC
RATINGS
UNIT
UT137F_G-5
500 (Note 2)
V
Repetitive peak off-state voltages
V
DRM
UT137F_G-6
600 (Note 2)
V
UT137F_G-8
800
V
RMS on-state current full sine wave; T
mb
≤99°C
I
T(RMS)
12
A
t = 20ms
95
Non-repetitive peak on-state current
I
TSM
A
t = 16.7 ms
(Full sine wave; T
J
= 25°C prior to surge)
105
I
2
t for fusing
t = 10 ms
I
2
t
45
A
2
s
T2+ G+
50
A/μs
Repetitive rate of rise of on-state current
T2+ G-
50
A/μs
after triggering
dI
T
/dt
T2- G-
50
A/μs
I
TM
=20A; I
G
=0.2A; d
IG
/dt=0.2A/μs
10
A/μs
T2- G+
Peak gate voltage
V
GM
5
V
Peak gate current
I
GM
2
A
Peak gate power
P
GM
5
W
Average gate power (over any 20 ms period)
P
G(AV)
0.5
W
Junction Temperature
T
J
125
°C
Storage Temperature
T
STG
-40 ~ +150
°C
Note: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. 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 15A/μs.
THERMAL RESISTANCES
PARAMETER
Thermal resistance Junction to Ambient
Thermal resistance Junction to mounting
base
In Free Air
Full cycle
Half cycle
SYMBOL
θ
JA
θ
JC
MIN
TYP
60
MAX
1.5
2.0
UNIT
°C/W
°C/W
°C/W
STATIC CHARACTERISTICS
(T
J
=25°C, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
T2+G+
T2+G-
T2-G-
T2-G+
T2+G+
T2+G-
T2-G-
T2-G+
MIN
TYP
5
8
11
20
7
20
8
10
6
1.4
0.7
0.4
0.1
MAX
UT136F UT136G
25
50
25
50
25
50
70
100
40
60
60
90
40
60
60
90
30
60
1.65
1.5
0.5
UNIT
Gate Trigger Current
I
GT
V
D
=12V, I
T
=0.1A
mA
Latching Current
Holding Current
On-State Voltage
Gate Trigger Voltage
Off-State Leakage Current
I
L
I
H
V
T
V
GT
I
D
V
D
=12V, I
GT
=0.1A
mA
mA
V
V
V
mA
V
D
=12V, I
GT
=0.1A
I
T
=15A
V
D
=12V, I
T
=0.1A
V
D
=400V, I
T
=0.1A, T
J
=125°C
V
D
=V
DRM(max)
, T
J
=125°C
0.25
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QW-R401-013.C
UT138F/G
DYNAMIC CHARACTERISTICS
(T
J
=25°C, unless otherwise specified)
PARAMETER
Critical Rate Of Rise Of
Off-State Voltage
Critical Rate Of Change
Of Commutating
Voltage
Gate Controlled
Turn-On Time
SYMBOL
dV
D
/dt
dV
com
/dt
t
gt
TEST CONDITIONS
V
DM
=67% V
DRM(max)
, T
J
=125°C,
Exponential waveform, gate open circuit
V
DM
=400V, T
J
=95°C, I
T(RMS)
=12A,
dI
com
/dt=5.4A/ms, gate open circuit
I
TM
=16A, V
D
=V
DRM(max)
, I
G
=0.1A,
dI
G
/dt=5A/μs
TRIAC
MIN
TYP MAX UNIT
UT138F UT138G
50
200
10
250
20
2
V/μs
V/μs
μs
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QW-R401-013.C
UT138F/G
TYPICAL CHARACTERISTICS
Maximum On-State Dissipation,
Ptot Vs RMS On-state Current, I
T(RMS)
,
Whereα=Conduction Angle.
Ptot (W)
T
mb(max)
°(C)
20
95
α=180
15
α
10
5
0
0
α
α=120
α=90
102.5
α=60
α=30
110
117.5
125
10
10us
100
dI
T
/dt limit
T2-G+ quadrant
I
T
I
TSM
time
TRIAC
Maximum Permissible Non-Repetitive Peak On-
state Current I
TSM
, Vs Pulse Width t
p
, for
Sinusoidal Currents ,t
p
≤20ms.
ITSM (A)
1000
5
10
IT(RMS) (A)
15
T
T
J
initial=25°Cmax
1ms 10ms 100ms
100us
T(s)
Maximum Permissible Repetitive RMS On-state
Current I
T(RMS)
, Vs Surge Duration, For Sinusoidal
Currents, f=50Hz, T
MP
≤99°C
I
T(RMS)
(A)
25
20
15
10
5
0
0.01
0.1
1
Surge Duration (S)
10
1.6
1.4
1.2
Normalised Gate Trigger Voltage
V
GT
(T
J
)/V
GT
(25°C), Vs Junction
V
GT
(T
J
) Temperature, T
J
V
GT
(25°C)
1
0.8
0.6
0.4
-50
0
50
T
J
(°C)
100
150
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QW-R401-013.C
UT138F/G
TYPICAL CHARACTERISTICS (Cont.)
TRIAC
Normalised Holding Current
I
H
(T
J
)/I
H
(25°C), Vs Junction Temperature, T
J
I
H
(T
J
)
I
H
(25°C)
3
2.5
2
1.5
1
0.5
0
-50
0
50
T
J
(°C)
100
150
40
30
Typical And Maximum
On-state Characteristic
I
T
(A)
T
J
=125°C
T
J
=25°C
typ
V
OUT
=1.75V
R
S
=0.316Ohms
max
20
10
0
0
0.5
1
1.5
V
T
(V)
2
2.5
3
Transient Thermal Impedance
Zth j-mb, Vs Pulse Width, t
p
10
unidirectional
1
0.1
0.01
P
D
bidirectional
t
p
Typical Commutation dV/dt Vs Junction
Temperature, Parameter Commutation dI
T
/dt.
The Triac Should Commutate When The dV/dt Is Below The
Value On The Appropriate Curve For Pre-Commutation dIV/dt
dV/dt(V/us)
1000
off-state dV/dt limit
100
UT138G
UT138F
10
dlcom/dt
4.2
12 9.1 7 5.4
=15A/ms
1s
10s
1
0
50
T
J
(°C)
100
150
10us 0.1ms 1ms 10ms 0.1s
tp/s
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QW-R401-013.C
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