January 2010 Doc ID 5203 Rev 4 1/11
11
TS420
Sensitive gate 4 A SCRs
Features
■On-state rms current, 4 A
■Repetitive peak off-state voltages,
600 and 700 V
■Triggering gate current, 0.2 mA
Description
Thanks to highly sensitive triggering levels, the
TS420 series is suitable for all applications where
the available gate current is limited, such as motor
control for hand tools, kitchen aids, overvoltage
crowbar protection for low power supplies among
others.
Available in through-hole or surface-mount
packages, they provide an optimized performance
in a limited space area.
A
K
G
A
A
K
G
A
K
G
A
A
K
G
A
DPAK
TS420-B
IPAK
TS420-H
TO-220AB
TS420-T
Table 1. Device summary
Order code
Voltage (xxx)
Sensitivity Package
600 V 700 V
TS420-xxxB X X 0.2 mA DPAK
TS420-xxxH X X 0.2 mA IPAK
TS420-xxxT X X 0.2 mA TO-220AB
www.st.com
Characteristics TS420
2/11 Doc ID 5203 Rev 4
1 Characteristics
Table 2. Absolute ratings (limiting values)
Symbol Parameter Value Unit
IT(RMS) On-state rms current (180° conduction angle) Tl = 115 °C 4 A
IT(AV) Average on-state current (180° conduction angle) Tl = 115 °C 2.5 A
ITSM Non repetitive surge peak on-state current tp = 8.3 ms Tj = 25 °C 33 A
tp = 10 ms 30
I²tI
²t Value for fusing tp = 10 ms Tj = 25 °C 4.5 A2S
dI/dt Critical rate of rise of on-state current
IG = 2 x IGT
, tr ≤ 100 ns F = 60 Hz Tj = 125 °C 50 A/µs
IGM Peak gate current tp = 20 µs Tj = 125 °C 1.2 A
PG(AV) Average gate power dissipation Tj = 125 °C 0.2 W
Tstg Storage junction temperature range - 40 to + 150 °C
TjOperating junction temperature range - 40 to + 125
VRGM Maximum peak reverse gate voltage 5 V
Table 3. Device timings
Symbol Parameter Test conditions Value Unit
tGT Gate controlled turn on time ITM = 10 A, VD = VDRM(max), IGT = 10 mA,
dIG/dt = 0.2 A/µs, RG = 1 kΩ, Tj = 25 °C 0.5 (Typ.)
µs
tQCircuit controlled turn off time
VD = 67% VDRM(max), Tj = 125 °C, ITM = 8 A,
VR = 10 V, dIT/dt = 10 A/µs,
dVD/dt = 2 V/µs, RG = 1 kΩ
60 (Typ.)
TS420 Characteristics
Doc ID 5203 Rev 4 3/11
Table 4. Electrical characteristics (Tj = 25 °C, unless otherwise specified)
Symbol Test conditions Value Unit
IGT VD = 12 V, RL = 33 Ω
MAX. 200 µA
VGT MAX. 0.8 V
VGD VD = VDRM, RL = 33 kΩ, RGK = 220 ΩTj = 125 °C MIN. 0.1 V
VRG IRG = 10 µA MIN. 8 V
IHIT = 50 mA, RGK = 1 kΩMAX. 5 mA
ILIG = 1 mA, RGK = 1 kΩMAX. 6 mA
dV/dt VD = 67 % VDRM, RGK = 220 ΩTj = 125 °C MIN. 5 V/µs
VTM ITM = 8 A, tp = 380 µs Tj = 25 °C MAX. 1.6 V
Vt0 Threshold voltage Tj = 125 °C MAX. 0.85 V
RdDynamic resistance Tj = 125 °C MAX. 90 mΩ
IDRM
IRRM
VDRM = VRRM, RGK = 220 Ω
Tj = 25 °C MAX. 5µA
Tj = 125 °C 1 mA
Table 5. Thermal resistance
Symbol Parameter Value Unit
Rth(j-c) Junction to case (DC) 3.0 °C/W
Rth(j-a) Junction to ambient (DC)
S(1) = 0.5 cm²
1. Copper under surface tab
DPAK 70
°C/WIPAK 100
TO-220AB 60
Characteristics TS420
4/11 Doc ID 5203 Rev 4
Figure 1. Maximum average power
dissipation versus average on-state
current
Figure 2. Average and DC on-state current
versus case temperature
0
.
00
.
5
1.
0
1.
5
2.
0
2.
53
.
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
P(W)
I (A)
T(AV)
α= 180°
360°
α
0 25 50 75 100 125
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
I (A)
T(AV)
T (°C)
case
α= 180°
DC
Figure 3. Average and DC on-state current
versus ambient temperature
(DPAK)
Figure 4. Relative variation of thermal
impedance junction to ambient
versus pulse duration (DPAK)
0 25 50 75 100 125
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
I (A)
T(AV)
T (°C)
amb
α= 180°
α= 180°
DPAK (S = 0.5cm )
2
IPAK
DC
DC
Device mounted on FR4 with
recommended pad layout
1E-3 1E-2 1E-1 1E+0 1E+1 1E+2 5E+2
1E-3
1E-2
1E-1
1E+0
K=[Z /R ]
th(j-c) th(j-c)
t (s)
p
Zth(j-c)
Zth(j-a)
Device mounted on FR4 with
recommended pad layout
Figure 5. Relative variation of gate trigger
current and holding current versus
junction temperature
Figure 6. Relative variation of holding
current versus gate-cathode
resistance (typical values)
-40 -20 0 20 40 60 80 100 120 140
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
T (°C)
j
I,I,I[T] /
GT H L j I ,I ,I [T =25°C]
GT H L j
IGT
IH and I
R = 1k
L
GK Ω
R(k)
GK Ω
I [R ] / I [ =1k ]
HGK H ΩRGK
Tj= 25°C
5
4
1E-2 1E-1 1E+0 1E+1
3
2
1
0
TS420 Characteristics
Doc ID 5203 Rev 4 5/11
Figure 7. Relative variation of dV/dt immunity
versus gate-cathode resistance
(typical values)
Figure 8. Relative variation of dV/dt immunity
versus gate-cathode capacitance
(typical values)
0 200 400 600 800 1000 1200 1400 1600 1800 2000
0.01
0.10
1.00
10.00
R(k)
GK Ω
dV/dt[R ] / dV/dt[ =220 ]
GK ΩRGK
Tj= 125°C
V = 0.67 x V
D DRM
0 2 4 6 8 10 12 14 16 18 20 22
0
2
4
6
8
10
C (nF)
GK
dV/dt[C ] / dV/dt[ =220 ]
GK ΩRGK
T
V = 0.67 x V
= 125°C
R = 220
D DRM
GK
j
Ω
Figure 9. Surge peak on-state current versus
number of cycles)
Figure 10. Non-repetitive surge peak on-state
current, and corresponding values
of I²t
1 10 100 1000
0
5
10
15
20
25
30
35
I (A)
TSM
Number of cycles
Non repetitive
T initial=25°C
j
Repetitive
T =115°C
C
t =10ms
p
One cycle
0.01 0.10 1.00 10.00
1
10
100
300
I (A), I t (A s)
TSM 22
t (ms)
p
I t
2
ITSM
T initial = 25°C
j
dI/dt limitation
Sinusoidal pulse with
width tp < 10 ms
Figure 11. On-state characteristics (maximum
values)
Figure 12. Thermal resistance junction to
ambient versus copper surface
under tab (DPAK)
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
0.1
1.0
10.0
50.0
I (A)
TM
V (V)
TM
Tj=max
T =25°C
j
V =0.85V
R =90m
T max.:
j
t0
dΩ
0 2 4 6 8 10 12 14 16 18 20
0
20
40
60
80
100
S(cm²)
R (°C/W)
th(j-a)
Epoxy printed circuit board FR4
copper thickness = 35 µm
Ordering information scheme TS420
6/11 Doc ID 5203 Rev 4
2 Ordering information scheme
Figure 13. Ordering information scheme
TS 4 20 - 600 B (-TR)
Sensitive SCR series
Sensitivity
Voltage
Package
Packing mode
Current
4 = 4A
20 = 0.2 mA
600 = 600 V
700 = 700 V
B = DPAK
H = IPAK
T = TO-220AB
Blank = Tube
TS420 Package information
Doc ID 5203 Rev 4 7/11
3 Package information
●Epoxy meets UL94, V0
●Recomended torque 0.4 to 0.6 N·m (TO-220AB)
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.
Figure 14. Footprint (dimensions in mm)
Table 6. DPAK dimensions
Ref.
Dimensions
Millimeters Inches
Min. Max. Min. Max.
A 2.20 2.40 0.086 0.094
A1 0.90 1.10 0.035 0.043
A2 0.03 0.23 0.001 0.009
B 0.64 0.90 0.025 0.035
B2 5.20 5.40 0.204 0.212
C 0.45 0.60 0.017 0.023
C2 0.48 0.60 0.018 0.023
D 6.00 6.20 0.236 0.244
E 6.40 6.60 0.251 0.259
G 4.40 4.60 0.173 0.181
H 9.35 10.10 0.368 0.397
L2 0.80 typ. 0.031 typ.
L4 0.60 1.00 0.023 0.039
V2 0° 8° 0° 8°
H
L4
G
B
L2
E
B2
D
A1
R
R
C
A
C2
0.60 MIN.
V2
A2
6.7
6.7 3 3 1.6
1.6
2.3
2.3
Package information TS420
8/11 Doc ID 5203 Rev 4
Table 7. IPAK dimensions
Ref.
Dimensions
Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A 2.20 2.40 0.086 0.094
A1 0.90 1.10 0.035 0.043
A3 0.70 1.30 0.027 0.051
B 0.64 0.90 0.025 0.035
B2 5.20 5.40 0.204 0.212
B3 0.95 0.037
B5 0.30 0.035
C 0.45 0.60 0.017 0.023
C2 0.48 0.60 0.019 0.023
D 6 6.20 0.236 0.244
E 6.40 6.60 0.252 0.260
e2.28 0.090
G 4.40 4.60 0.173 0.181
H 16.10 0.634
L 9 9.40 0.354 0.370
L1 0.8 1.20 0.031 0.047
L2 0.80 1 0.031 0.039
V1 10° 10°
H
LL1
G
eB5
B
V1
D
C
A1
A3
A
C2
B3
L2
E
B2
TS420 Package information
Doc ID 5203 Rev 4 9/11
Table 8. TO-220AB dimensions
Ref.
Dimensions
Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A 15.20 15.90 0.598 0.625
a1 3.75 0.147
a2 13.00 14.00 0.511 0.551
B 10.00 10.40 0.393 0.409
b1 0.61 0.88 0.024 0.034
b2 1.23 1.32 0.048 0.051
C 4.40 4.60 0.173 0.181
c1 0.49 0.70 0.019 0.027
c2 2.40 2.72 0.094 0.107
e 2.40 2.70 0.094 0.106
F 6.20 6.60 0.244 0.259
ØI 3.75 3.85 0.147 0.151
I4 15.80 16.40 16.80 0.622 0.646 0.661
L 2.65 2.95 0.104 0.116
l2 1.14 1.70 0.044 0.066
l3 1.14 1.70 0.044 0.066
M2.60 0.102
C
b2
c2
F
Ø I
L
A
a1
a2
B
e
b1
I4
l3
l2
c1
M
Ordering information TS420
10/11 Doc ID 5203 Rev 4
4 Ordering information
5 Revision history
Table 9. Ordering information
Order code Marking Package Weight Base qty Delivery mode
TS420-600B TS420600 DPAK 0.3 g 75 Tube
TS420-600B-TR TS420600 2500 Tape and reel
TS420-600H TS420600 IPAK 0.4 g 75 Tube
TS420-600T TS420600T TO-220AB 2.3 g 50 Tube
TS420-700B TS420700 DPAK 0.3 g 75 Tube
TS420-700B-TR TS420700 2500 Tape and reel
TS420-700H TS420700 IPAK 0.4 g 75 Tube
TS420-700T TS420700T TO-220AB 2.3 g 50 Tube
Table 10. Document revision history
Date Revision Changes
Sep-2000 3 Previous release.
26-Jan-2010 4 Updated package illustration for TO-220AB on front page and
Ta b l e 8 . Added Ta b l e 3 .
TS420
Doc ID 5203 Rev 4 11/11
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