
On-State Current
10 Amp
FT1008.H
LOGIC LEVEL TRIAC
This series of TRIACs uses a high 
performance PNPN technology.
These par ts are intended for general 
purpose AC switching applications with 
highly inductive loads.
Jul - 02
Absolute Maximum Ratings, according to IEC publication No. 134
TO220-AB
Gate Trigger Current
≤ 10 mA
Off-State Voltage
200 V ÷ 600 V
MT1
MT2
G
MT2
RMS On-state Current
Non-repetitive On-State Current
Non-repetitive On-State Current
Fusing Current
Peak Gate Current
Average Gate Power Dissipation
Critical rate of rise of on-state current
Operating Temperature
Storage Temperature
I
T(RMS)
PARAMETER CONDITIONS Min. Max. UnitSYMBOL
I
TSM
I2t 
I
GM
P
G(AV)
T
j
T
stg
All Conduction Angle, TC = 105 ºC
Full Cycle, 60 Hz
Full Cycle, 50 Hz
t
p
 = 10 ms, Half Cycle
20 µs max.    T
j
 =125ºC
T
j 
=125ºC
I
G
 = 2x IGT, t
r
 ≤100ns
f= 120 Hz, T
j
 =125ºC
10
105
100
55
50
-40
-40
A
A
A
A
2
s
A
W
A/µs
ºC
ºC
4
1
+125
+150
di/dt
I
TSM
Repetitive Peak Off State
Voltage
PARAMETER VOLTAGE UnitSYMBOL
V
DRM
V
RRM
B
200 V
M
600
D
400

FT1008.H
LOGIC LEVEL TRIAC
Jul - 02
Electrical Characteristics
Gate Trigger Current
Off-State Leakage Current
Threshold Voltage
Dynamic Resistance
On-state Voltage
Gate Trigger Voltage
Gate Non Trigger Current
Holding Current
Latching Current
Critical Rate of Voltage Rise
PARAMETER CONDITIONS SENSITIVITY
Unit
SYMBOL
I
GT 
(1)
I
DRM
VD = 12 V
DC 
, R
L
 = 33Ω,  T
j
 = 25 ºC
mA
08
10
1
5
0.85
40
1.55
1.3
0.2
1.5
60
mA
µA
V
mΩ
V
V
V
mA
mA
V/µs
A/ms
MAX
MAX
MAX
MAX
MAX
MAX
MAX
MIN
MAX
MAX
MAX
MIN
MIN
MIN
MIN
/I
RRM
V
TM
(2)
V
GT
V
GD
I
H 
(2)
I
L
dv / dt 
(2)
R
th(j-a)
Thermal Resistance 
Junction-Ambient
VD = V
DRM 
, Tj = 125 ºC
T
j
 = 25 ºC
V
R
 = V
RRM 
,
IT = 14 Amp, tp = 380 µs, Tj = 25 ºC
VD = 12 V
DC 
, R
L
 = 33Ω,   T
j
 = 25 ºC
I
T
 = 500 mA , Gate open,  Tj = 25 ºC
I
G
 = 1.2 IGT,
  Tj
 = 25 ºC
V
D
 = 0.67 x V
DRM
 , Gate open
T
j
 = 125 ºC
Quadrant
Q1÷Q3
Q1÷Q3
Q1÷Q3
Q1,Q3
Q2
V
D
 = V
DRM 
, R
L
 = 3.3KΩ,   T
j
 = 125 ºC
ºC/W
ºC/W
15
25
30
40
6.5
2.9
-
(1) Minimum IGT is guaranted at 5% of IGT max.
(2) For either polarity of electrode MT2 voltage with reference to electrode MT1.
R
th(j-c)
Thermal Resistance 
Junction-Case
for AC 360º conduction angle
(dI/dt)c 
(2)
Critical Rate of Current Rise
(dv/dt)c= 0.1 V/µs         T
j
= 125 ºC
(dv/dt)c= 10 V/µs          T
j
 = 125 ºC
without snubber           Tj = 125 ºC
V
to
(2)
R
d
(2)
Tj = 125 ºC
T
j
 = 125 ºC
PART NUMBER INFORMATION
FAGOR
TRIAC
CURRENT
CASE
VOLTAGE
SENSITIVITY
F T 10 08 B H 00
FORMING
TU
PACKAGING

1 10 100 1000
130
120
110
100
 90
 80
 70
 60
 50
 40
 30
 20
 10
  0
I
TSM
 (A)
Number of cycles
1E+0
1E-1
1E-2
K=[Zth / Rth]
1E-3 1E-2 1E-1 1E+0 1E+1 1E+2 5E+2
tp (s)
I
T(RMS)
(A)
Jul - 02
Fig. 1: Maximum power dissipation versus 
RMS on-state curren (full cycle).
0 25 50 75 100 125
Fig. 2: RMS on-state current versus case 
temperature (full cycle).
Fig. 3: : Relative variation of thermal 
impedance versus pulse duration.
Fig. 5: Surge peak on-state current versus 
number of cycles
Fig. 6: Non-repetitive surge peak on-state 
current for a sinusoidal pulse with width 
tp<10ms, and corresponding value of I
2
t.
Fig. 4: On-state characteristics (maximum 
values)
FT1008.H
LOGIC LEVEL TRIAC
P (W)
Tc (ºC)
I
T(RMS)
(A)
0 2 4 6 8
0
2
4
6
8
10
12
14
16
0
2
4
6
8
10
12
14
100
 10
  1
ITM (A)
0.5 1.0 1.5 2.0 2.5 3.0 5.0
VTM (V)
Zth(j-c)
Zth(j-a)
3.5 4.0 4.5
Tj max 
Vto = 0.85 V 
Rt = 35mΩ
0.01 0.10 1.00 10.00
1000
 100
  10
I
TSM
 (A), I2 t (A2s)
tp (ms)
Non repetitive 
Tj initial = 25 ºC
Repetitive 
Tc = 90 ºC
Tj initial = 25 ºC
dl/dt limitation 
50A/µs
1 3 5 7 9
1
3
5
7
9
11
13
Tj max
Tj = 25 ºC
t=20ms
One cycle
I2t
I
TSM
10

FT1008.H
LOGIC LEVEL TRIAC
PACKAGE MECHANICAL DATA
TO-220AB (Plastic)
A 
a1 
a2
B 
b1 
b2
C 
c1 
c2
e
F
I
I4
L 
I2 
I3 
M
REF.
DIMENSIONS
Milimeters
Min. Nominal Max.
15.20
13.00
10.00
0.61
1.23
4.40
0.49
2.40
2.40
6.20
3.75
15.80
2.65
1.14
1.14
3.75
16.40
2.60
15.90
14.00
10.40
0.88
1.32
4.60
0.70
2.72
2.70
6.60
3.85
16.80
2.95
1.70
1.70
14
a1
L
A
e
a2
b1
12
13
øI
B
c
F
b2
c2
c1
M
0
0.5
2.0
1.0
1.5
2.5
I
GT,IH,IL
[Tj]/I
GT,IH,IL
.[Tj=25ºC]
Fig. 7: Relative variation of gate trigger 
current, holding current and latching versus 
junction temperature (typical values)
Tj(ºC)
-40 -20 0 20 40 60 80 100120140
I
GT
IH&I
L
Jul - 02
0 25 50 75
Fig. 8: Relative variation of critical rate of 
decrease of main current versus junction 
temperature
(dI/dt)c [Tj]/(dI/dc)c [Tj specified]
100
6
5
4
3
2
1
0
Tj(ºC)
125