February 2012 Doc ID 7478 Rev 8 1/10
10
TN2540, TXN625
TYN625, TYN825, TYN1225
Standard 25 A SCRs
Features
■On-state rms current, IT(RMS) 25 A
■Repetitive peak off-state voltage, VDRM/VRRM
600 to 1200 V
■Triggering gate current, IGT 40 mA
■Insulated package TO-220AB ins
– Insulating voltage 2500 V rms
– UL1557 certified (file ref. E81734)
Description
These standard 25 A SCRs are suitable for
general purpose applications.
Using clip assembly technology, they provide a
superior performance in surge current
capabilities.
TXN625RG is packaged in TO-220AB ins.
A
K
G
A
A
K
G
A
A
K
G
D2PAK
(TN2540-x00G)
TO-220AB
(TYNx25RG)
A
K
G
TO-220AB ins
(TXN625RG)
Table 1. Device summary
Order code
Voltage VDRM/VRRM Sensitivity IGT Package
600 V 800 V 1200 V
TN2540-600G-TR Y 40 mA D2PA K
TN2540-800G-TR Y 40 mA D2PA K
TXN625RG Y 40 mA TO-220AB ins
TYN625RG Y 40 mA TO-220AB
TYN825RG Y 40 mA TO-220AB
TYN1225RG Y 40 mA TO-220AB
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Characteristics TN2540, TXN625, TYN625, TYN825, TYN1225
2/10 Doc ID 7478 Rev 8
1 Characteristics
Table 2. Absolute ratings (limiting values)
Symbol Parameter Value Unit
IT(RMS) On-state rms current (180 °Conduction angle)
TO-220AB,
D2PA K Tc = 100 °C 25 A
TO-220AB ins Tc = 83 °C
IT(AV) Average on-state current (180 °Conduction angle) Tc = 100 °C 16 A
ITSM Non repetitive surge peak on-state current tp = 8.3 ms Tj = 25 °C 314 A
tp = 10 ms 300
I2tI
2t Value for fusing tp = 10 ms Tj = 25 °C 450 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 4 A
PG(AV) Average gate power dissipation Tj = 125 °C 1 W
Tstg
Tj
Storage junction temperature range
Operating junction temperature range
- 40 to + 150
- 40 to + 125 °C
VRGM Maximum peak reverse gate voltage 5 V
Table 3. Electrical Characteristics (Tj = 25 °C, unless otherwise specified)
Symbol Test conditions Value Unit
IGT VD = 12 V RL = 33 Ω
MIN. 4 mA
MAX. 40
VGT MAX. 1.3 V
VGD VD = VDRM RL = 3.3 kΩTj = 125 °C MIN. 0.2 V
IHIT = 500 mA Gate open MAX. 50 mA
ILIG = 1.2 x IGT MAX. 90 mA
dV/dt VD = 67% VDRM Gate open Tj = 125 °C MIN. 1500 V/µs
VTM ITM = 50 A tp = 380 µs Tj = 25 °C MAX. 1.6 V
Vt0 Threshold voltage Tj = 125 °C MAX. 0.77 V
RdDynamic resistance Tj = 125 °C MAX. 14 mΩ
IDRM
IRRM
VDRM = VRRM
Tj = 25 °C MAX. 5µA
Tj = 125 °C 4 mA
TN2540, TXN625, TYN625, TYN825, TYN1225 Characteristics
Doc ID 7478 Rev 8 3/10
Table 4. Thermal resistances
Symbol Parameter Value Unit
Rth(j-c) Junction to case (DC) D2PAK, TO-220AB 1.0 °C/W
TO-220AB ins 2.0
Rth(j-a) Junction to ambient (DC) S(1) = 1 cm2
1. S = Copper surface under tab.
D2PA K 4 5 °C/W
TO-220AB, TO-220AB ins 60
Figure 1. Maximum average power
dissipation versus average
on-state current
Figure 2. Average and DC on-state current
versus case temperature
P(W)
0
2
4
6
8
10
12
14
16
18
20
22
0246810121416
I (A)
T(AV)
360°
α
I (A)
T(AV)
0
2
4
6
8
10
12
14
16
18
20
22
24
26
28
0 25 50 75 100 125
D2PA K
TO-220AB
TO-220ABins
α= 180°
DC
T (°C)
case
Figure 3. Average and DC on-state current
versus ambient temperature
Figure 4. Relative variation of thermal
impedance versus pulse duration
(D2PAK, and TO-220AB)
I (A)
T(AV)
0,0
0,5
1,0
1,5
2,0
2,5
3,0
3,5
0 25 50 75 100 12
5
D
2
PA K
TO-220AB
TO-220ABins
DC
α= 180°
T (°C)
amb
1E-3 1E-2 1E-1 1E+0 1E+1 1E+2 5E+2
0.01
0.10
1.00
K=[Z /R
th th]
t (s)
p
Zth(j-c)
Zth(j-a)
Characteristics TN2540, TXN625, TYN625, TYN825, TYN1225
4/10 Doc ID 7478 Rev 8
Figure 5. Relative variation of thermal
impedance versus pulse duration
(TO-220AB ins)
Figure 6. Relative variation of gate trigger,
holding, and latching currents
versus junction temperature
K=[Z /R
th th]
1,0E-02
1,0E-01
1,0E+00
1,0E-03 1,0E-02 1,0E-01 1,0E+00 1,0E+01 1,0E+02 1,0E+03
t (s)
p
Zth(j-c)
Zth(j-a)
-40 -20 0 20 40 60 80 100 120 140
0.0
0.5
1.0
1.5
2.0
2.5
T (°C)
j
I,I,I[T] /
GT H L j I ,I ,I [T =25°C]
GT H L j
IGT
IH& IL
Figure 7. Surge peak on-state current versus
number of cycles
Figure 8. Non-repetitive surge peak on-state
current, and corresponding values
of I2t
Figure 9. On-state characteristics (maximum
values)
Figure 10. Thermal resistance junction to
ambient versus copper surface
under tab (D2PAK)
I (A)
TSM
0
50
100
150
200
250
300
350
1 10 100 100
0
Non repetitive
Tjinitial=25 °C
Repetitive
TC=83°C
t =10ms
p
One cycle
Number of cycles
0.01 0.10 1.00 10.00
100
1000
2000
I (A), I t (A s)
TSM
22
Sinusoidal pulse width t (ms)
p
I t
2
I
TSM
T initial = 25°C
j
dI/dt limitation
I (A)
TM
1
10
100
1000
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Tjmax :
Vto = 0.77V
Rd= 14m˜
V (V)
TM
0 4 8 1216202428323640
0
10
20
30
40
50
60
70
80
S(cm²)
R (°C/W)
th(j-a)
Epoxy printed circuit board FR4,
copper thickness = 35 µm
TN2540, TXN625, TYN625, TYN825, TYN1225 Ordering information schemes
Doc ID 7478 Rev 8 5/10
2 Ordering information schemes
Figure 11. TN2540-x00G ordering information scheme
Figure 12. TXN625RG ordering information scheme
Figure 13. TYNx25RG ordering information scheme
TN 25 40 - 600 G -TR
Standard SCR series
Sensitivity
Voltage
Package
Packing mode
Current
25 = 25 A
40 = 40 mA
600 = 600 V
800 = 800 V
G = D2PA K
-TR = Tape and reel
TXN 6 25 RG
Standard SCR series in TO-220AB ins
Packing mode
Voltage
Current
6 = 600 V
8 = 800 V
25 = 25 A
RG = Tube
TYN 6 25 RG
Standard SCR series in TO-220AB
Packing mode
Voltage
Current
6 = 600 V
8 = 800 V
12 =1200 V
25 = 25 A
RG = Tube
Package information TN2540, TXN625, TYN625, TYN825, TYN1225
6/10 Doc ID 7478 Rev 8
3 Package information
●Epoxy meets UL94, V0
●Lead-free package
●Recommended torque values (TO-220AB, and TO220AB ins): 0.4 to 0.6 N·m
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. D2PAK footprint (dimensions in mm)
Table 5. D2PAK dimensions
Ref.
Dimensions
Millimeters Inches
Min. Typ. Max. Min. Typ. Max.
A 4.30 4.60 0.169 0.181
A1 2.49 2.69 0.098 0.106
A2 0.03 0.23 0.001 0.009
B 0.70 0.93 0.027 0.037
B2 1.25 1.40 0.048 0.055
C 0.45 0.60 0.017 0.024
C2 1.21 1.36 0.047 0.054
D 8.95 9.35 0.352 0.368
E 10.00 10.28 0.393 0.405
G 4.88 5.28 0.192 0.208
L 15.00 15.85 0.590 0.624
L2 1.27 1.40 0.050 0.055
L3 1.40 1.75 0.055 0.069
R 0.40 0.016
V2 0° 8° 0° 8°
e
H
L2
L1
b
b2
E
E1
D1
A
C2
D
A1
0 - 8°
C
L4
L3
L
Gauge
plane
16.90
12.20
9.75 3.50
5.08
1.60
2.54
TN2540, TXN625, TYN625, TYN825, TYN1225 Package information
Doc ID 7478 Rev 8 7/10
Table 6. 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
Package information TN2540, TXN625, TYN625, TYN825, TYN1225
8/10 Doc ID 7478 Rev 8
Table 7. TO-220AB ins 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
TN2540, TXN625, TYN625, TYN825, TYN1225 Ordering information
Doc ID 7478 Rev 8 9/10
4 Ordering information
5 Revision history
Table 8. Ordering information
Order code Voltage Sensitivity Marking Package Weight Base
qty
Delivery
mode
TN2540-600G-TR 600 V 40 mA TN2540600G D2PAK 1.5 g 1000 Tape & reel
TN2540-800G-TR 800 V 40 mA TN2540800G D2PAK 1.5 g 1000 Tape & reel
TXN625RG 600 V 40 mA TXN625 TO-220AB ins 2.3 g 50 Tube
TYN625RG 600 V 40 mA TYN625 TO-220AB 2.3 g 50 Tube
TYN825RG 800 V 40 mA TYN825 TO-220AB 2.3 g 50 Tube
TYN1225RG 1200 V 40 mA TYN1225 TO-220AB 2.3 g 50 Tube
Table 9. Document revision history
Date Revision Changes
Apr-2002 4A Previous update
13-Feb-2006 5 TO-220AB delivery mode changed from bulk to tube.
ECOPACK statement added.
17-Jun-2011 6 Added TXN625.
13-Sep-2011 7 Added UL certification in Features.
07-Feb-2012 8 Added TYN1225.
TN2540, TXN625, TYN625, TYN825, TYN1225
10/10 Doc ID 7478 Rev 8
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