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SM4T6V8 THRU SM4T6V8C
TRANSZORB® Transient Voltage Suppressors
6.8V-220V 5W
FEATURES
..
..
.
.
PEAK PULSE POWER= 400 W @ 1ms.
BREAKDOWN VOLTAGE RANGE :
From 6V8 to 220 V.
UNI AND BIDIRECTIONAL TYPES.
LOW CLAMPING FACTOR.
FAST RESPONSE TIME:
Tclamping : 1ps (0 V to VBR).
JEDEC REGISTRED.
MECHANICAL DATA
.
.
..
.
Body marked with : Logo, Date Code, Type
Code and Cathode Band (for unidirectional
types only).
Full compatibility with both gluing and paste
soldering technologies.
Excellent on board stability.
Tinned copper leads.
High temperature resistant resin.
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
ABSOLUTE RATINGS (limiting values)
Symbol
Parameter
Value
Unit
Pp
Peak pulse power dissipation
See note 1 and derating curve Fig 1.
Tamb = 25°C
400
W
P
Power dissipation on infinite heatsink
See note 1 and derating curve Fig 1.
Tlead = 50°C
5
W
IFSM
Non repetitive surge peak forward current.
For unidirectional types.
Tamb = 25°C
t =10 ms
50
A
Tstg
Tj
Storage and junction temperature range
- 65 to + 175
150
°C
°C
TL
Maximum lead temperature for soldering
during 10 s.
260
°C
Value
Unit
THERMAL RESISTANCES
Symbol
Parameter
Rth (j-l)
Junction-leads on infinite heatsink
20
°C/W
Rth (j-a)
Junction to ambiant. on printed circuit.
With standard footprint dimensions.
100
°C/W
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SM4T6V8 THRU SM4T6V8C
6.8V-220V 5W
TRANSZORB® Transient Voltage Suppressors
IRM @ VRM
TYPES
max
VBR
@
IR
min nom max
note2
Uni
directional
SM4T6V8
SM4T6V8A
SM4T7V5
SM4T7V5A
SM4T10
SM4T10A
SM4T12
SM4T12A
SM4T15
SM4T15A
SM4T18
SM4T18A
SM4T22
SM4T22A
SM4T24
SM4T24A
SM4T27
SM4T27A
SM4T30
SM4T30A
SM4T33
SM4T33A
SM4T36
SM4T36A
SM4T39
SM4T39
SM4T68
SM4T68A
SM4T100
SM4T100A
SM4T150
SM4T150A
SM4T200
SM4T200A
SM4T220
SM4T220A
µA
*
Bi
directional
*
QD
QE
QF
QG
QN
QP
QS
QT
QW
QX
RD
RE
RH
RK
RL
RM
RN
RP
RQ
RR
RS
RT
RU
RV
RW
RX
SN
SP
SW
SX
TH
TK
TS
TT
TU
TV
SM4T6V8C
SM4T6V8CA
SM4T7V5C
SM4T7V5CA
SM4T10C
SM4T10CA
SM4T12C
SM4T12CA
SM4T15C
SM4T15CA
SM4T18C
SM4T18CA
SM4T22C
SM4T22CA
SM4T24C
SM4T24CA
SM4T27C
SM4T27CA
SM4T30C
SM4T30C4
SM4T33C
SM4T33CA
SM4T36C
SM4T36CA
SM4T39C
SM4T39
SM4T68C
SM4T68CA
SM4T100C
SM4T100CA
SM4T150C
SM4T150CA
SM4T200C
SM4T200CA
SM4T220C
SM4T220CA
VD
VE
VF
VG
VN
VP
VS
VT
VW
VX
UD
UE
UH
UK
UL
UM
UN
UP
UQ
UR
US
UT
UU
UV
UW
UX
WN
WP
WW
WX
XH
XK
XS
XT
XU
XV
1000
1000
500
500
10
10
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
VCL @ I PP VCL @ IPP
αT
C
max
max
typ
max
10/1000µs
8/20µs
V
V
V
V
mA
V
A
V
A
5.8
5.8
6.4
6.4
8.55
8.55
10.2
10.2
12.8
12.8
15.3
15.3
18.8
18.8
20.5
20.5
23.1
23.1
25.6
25.6
28.2
28.2
30.8
30.8
33.3
33.3
58.1
58.1
85.5
85.5
128
128
171
171
188
188
6.45
6.45
7.13
7.13
9.5
9.5
11.4
11.4
14.3
14.3
17.1
17.1
20.9
20.9
22.8
22.8
25.7
25.7
28.5
28.5
31.4
31.4
34.2
34.2
37.1
37.1
64.6
64.6
95.0
95.0
143
143
190
190
209
209
6.8
6.8
7.5
7.5
10
10
12
12
15
15
18
18
22
22
24
24
27
27
30
30
33
33
36
36
39
39
68
68
100
100
150
150
200
200
220
220
7.48
7.14
8.25
7.88
11
10.5
13.2
12.6
16.5
15.8
19.8
18.9
24.2
23.1
26.4
25.2
29.7
28.4
33
31.5
36.3
34.7
39.6
37.8
42.9
41.0
74.8
71.4
110
105
165
158
220
210
242
231
10
10
10
10
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
10.5
10.5
11.3
11.3
14.5
14.5
16.7
16.7
21.2
21.2
25.2
25.2
30.6
30.6
33.2
33.2
37.5
37.5
41.5
41.5
45.7
45.7
49.9
49.9
53.9
53.9
92
92
137
137
207
207
274
274
328
328
38
38
35.4
35.4
27.6
27.6
24
24
19
19
16
16
13
13
12
12
10.7
10.7
9.6
9.6
8.8
8.8
8
8
7.4
7.4
4.3
4.3
2.9
2.9
2.0
2.0
1.5
1.5
1.4
1.4
13.4
13.4
14.5
14.5
18.6
18.6
21.7
21.7
27.2
27.2
32.5
32.5
39.3
39.3
42.8
42.8
48.3
48.3
53.5
53.5
59.0
59.0
64.3
64.3
69.7
69.7
121
121
178
178
265
265
353
353
388
388
174
174
160
160
124
124
106
106
85
85
71
71
59
59
54
54
48
48
43
43
39
39
36
36
33
33
19
19
13
13
9
9
6.5
6.5
6
6
note3 note4
10-4/°C (PF)
5.7
5.7
6.1
6.1
7.3
7.3
7.8
7.8
8.4
8.4
8.8
8.8
9.2
9.2
9.4
9.4
9.6
9.6
9.7
9.7
9.8
9.8
9.9
9.9
10.0
10.0
10.4
10.4
10.6
10.6
10.8
10.8
10.8
10.8
10.8
10.8
3500
3500
3100
3100
2000
2000
1550
1550
1200
1200
975
975
800
800
725
725
625
625
575
575
510
510
480
480
450
450
270
270
200
200
145
145
120
120
110
110
% I PP
100
10
Figure 1: Power dissipation derating versus
ambient temperature
s
PULSE WAVEFORM 10/1000
s
100 %
50
Peak Power
(on printed circuit).
80 %
0
t
1000
60 %
s
Average Power
(on infinite heatsink).
40 %
Note 1 :
For surges greater than the maximum values,
the diode will present a short-circuit Anode - Cathode.
Note 2 :
Pulse test: TP < 50 ms.
Note 3 :
∆VBR = αT * (Ta - 25) * VBR(25°C).
Note 4 :
VR = 0 V, F = 1 MHz. For bidirectional types,
capacitance value is divided by 2.
E-mail: [email protected]
20 %
Tamb (˚c)
0%
0
2 of 3
20
40
60
80
100 120 140 160 180 200
Web Site: www.taychipst.com
SM4T6V8 THRU SM4T6V8C
6.8V-220V 5W
TRANSZORB® Transient Voltage Suppressors
RATINGS AND CHARACTERISTIC CURVES SM4T6V8 THRU SM4T6V8C
Figure 3 : Clamping voltage versus peak pulse current.
exponential waveform t = 20 µs ________
t = 1 ms ——————t =10 ms ...............
VCL (V)
Figure 2 : Peak pulse power versus exponential pulse duration.
Pp (W)
1000
100000
% Ipp
Tj initial = 25˚C
Tj initial = 25˚C
100
SM4T 220A
50
SM4T 150A
10000
0
tr
100
t
t
t r < 10
s
SM4T 68A
SM4T 39A
1000
SM4T 22A
SM4T 10A
10
SM4T 6V8A
100
tp (mS ) EXPO.
10
0.001
Ipp (A)
0.01
0.1
1
10
100
1
0.1
Figure 4a : Capacitance versus reverse applied
voltage for unidirectional types (typical values).
1
1000
C (pF)
10000
SM 4 T 6
V8 A
SM 4 T
15A
SM 4 T
3 0A
SM 4 T
6 8A
Tj = 25˚C
f = 1 MHz
Tj = 25˚C
f = 1 MHz
SM4T6V8CA
1000 SM4T 15C
A
SM4T 30CA
100 SM 4T 220A
10
1
100
Figure 4b : Capacitance versus reverse applied
voltage for bidirectional types (typical values)
C (pF)
10000
1000
10
100
SM4T 68CA
SM4T 220CA
V R (V)
10
V R (V)
10
1
100
10
100
Figure 6 : Transient thermal impedance
junction-ambient versus pulse duration. For a
mounting on PC Board with standard footprint
dimensions.
Figure 5 : Peak forward voltage drop versus
peak forward current (typical values for
unidirectional types).
ZTH j-a ( ˚C/W )
100
10
1
0.01
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0.1
1
10
100
1000
Web Site: www.taychipst.com
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