SMF5.0A -
S
MF170A
SURFACE MOUNT TRANSIENT VOLTAGE SUPPRESSORS
Stand- off Voltage : 5
to 170 V
Peak Power :
200 W
FEATURES :
* Stand-off voltage ; 5 - 170 Volts
* Peak Power ; - 200 Watts @ 1 ms (SMF5.0A - SFM58A)
- 175 Watts @ 1 ms (SFM60A - SFM170A)
* Maximum clamp voltage @ Peak pulse current
* Low leakage
SOD-123
2.7
2.6
* Pb / RoHS Free
3.9
3.7
MECHANICAL DATA :
* Case : SOD-123 plastic Case
* Weight : approx. 0.01 g
Dimensions in millimeters
MAXIMUM RATINGS
Rating at 25 °C ambient temperature unless otherwise specified.
Parameter
Maximum P
PK
Dissipation (PW - 10/1000 s)
(Note 1)
SMF60A - SMF170A
SMF5.0A - SMF58A
Symbol
P
PK
P
PK
P
D
Value
175
200
1000
385
4.0
Unit
W
W
W
mW
mW/ °C
Maximum P
PK
Dissipation @ Ta = 25 °C (PW - 8/10 s) (Note 2)
DC Power Dissipation @ Ta = 25 °C
Derate above 25 °C
Thermal Resistance, Junction to Ambient (Note 3)
Operating Junction and Storage Temperature Range
Notes :
(1) Non repetitive current pulse at Ta = 25°C, per waveform of Fig. 2.
(Note 3)
R
JA
325
-55 to +150
°C/W
°C
T
J
, T
STG
(2) Non repetitive current pulse at Ta = 25°C, per waveform of Fig. 5.
(3) Mounted with recommended minimum pad size, DC board FR4.
SMF5.0A -
S
MF170A
ELECTRICAL CHARACTERISTICS
( T
Working Peak
Reverse
Type No.
Voltage
V
RWM
(V)
5.0
6.0
6.5
7.0
7.5
8.0
8.5
9.0
10
11
12
13
14
15
16
17
18
20
22
24
26
28
30
33
36
40
43
45
48
51
54
58
60
64
70
75
78
85
90
100
110
120
130
150
160
170
(1)
L
= 30 °C unless otherwise noted, V
F
= 1.25 Volts @ 200 mA)
Test
Max. Reverse
Leakage Current
I
R
@ V
RWM
( A)
400
400
250
100
50
25
10
5.0
2.5
2.5
2.5
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Current
I
T
Max. Clamping
Voltage at I
P
P
V
C
(V)
9.2
10.3
11.2
12.0
12.9
13.6
14.4
15.4
17.0
18.2
19.9
21.5
23.2
24.4
26.0
27.6
29.2
32.4
35.5
38.9
42.1
45.4
48.4
53.3
58.1
64.5
69.4
72.7
77.4
82.4
87.1
93.6
96.8
103
113
121
126
137
146
162
177
193
209
243
259
275
Max. Reverse
Peak Pulse
Current
(3)
I
PP
(mA)
21.7
19.4
17.9
16.7
15.5
14.7
13.9
13.0
11.8
11.0
10.1
9.3
8.6
8.2
7.7
7.2
6.8
6.2
5.6
5.1
4..8
4.4
4.1
3.8
3.4
3.1
2.9
2.8
2.6
2.4
2.3
2.1
1.8
1.7
1.5
1.4
1.4
1.3
1.2
1.1
1.0
0.9
8.0
0.7
0.7
0.6
Breakdown Voltage @ I
T
V
BR
@ I
T
Min
6.40
6.67
7.22
7.78
8.33
8.89
9.44
10.0
11.1
12.2
13.3
14.4
15.6
16.7
17.8
18.9
20.0
22.2
24.4
26.7
28.9
31.1
33.3
36.7
40.0
44.4
47.8
50.0
53.3
56.7
60.0
64.4
66.7
71.1
77.8
83.3
86.7
94.4
100
111
122
133
144
167
178
189
Nom
6.70
7.02
7.60
8.20
8.77
9.36
9.92
10.55
11.70
12.85
14.00
15.15
16.40
17.60
18.75
19.90
21.00
23.35
25.60
28.10
30.40
32.80
35.10
38.70
42.10
46.80
50.30
52.65
56.10
59.70
63.15
67.80
70.20
74.85
81.90
87.70
91.25
99.20
105.50
117.00
128.50
140.00
151.50
176.00
187.50
199.00
Max.
7.00
7.37
7.98
8.60
9.21
9.83
10.4
11.1
12.3
13.5
14.7
15.9
17.2
18.5
19.7
20.9
22.1
24.5
26.9
29.5
31.9
34.4
36.8
40.6
44.2
49.1
52.8
55.3
58.9
62.7
66.3
71.2
73.7
78.6
86.0
92.1
95.8
104
111
123
135
147
159
185
197
209
SMF5.0A
SMF6.0A
SMF6.5A
SMF7.0A
SMF7.5A
SMF8.0A
SMF8.5A
SMF9.0A
SMF10A
SMF11A
SMF12A
SMF13A
SMF14A
SMF15A
SMF16A
SMF17A
SMF18A
SMF20A
SMF22A
SMF24A
SMF26A
SMF28A
SMF30A
SMF33A
SMF36A
SMF40A
SMF43A
SMF45A
SMF48A
SMF51A
SMF54A
SMF58A
SMF60A
SMF64A
SMF70A
SMF75A
SMF78A
SMF85A
SMF90A
SMF100A
SMF110A
SMF120A
SMF130A
SMF150A
SMF160A
SMF170A
Notes :
(1) A transient suppressor is normally selected according to the Working Peak Reverse Voltage
(V
RWM
) which should be equal to or
greater than the DC or continuous peak operating voltage level.
(2) V
BR
measured at pulse test current
I
T
at ambient temperature of 25 °C
(3) Surge current waveform per Fig. 2 and derate per Fig. 5.
(mA)
10
10
10
10
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
SMF5.0A -
S
MF170A
RATING AND CHARACTERISTIC CURVES ( SFM5.0A - SFM170A )
FIG.1 - PULSE DERATING CURVE
120
tr
Pulse Width (tp) is defined
as that point where the peak
current decays to 50% of I
RSM
tr
10 s
FIG.2 - 10 x 1000 s PULSE WAVEFORM
100
80
Peak Value - I
RSM
60
50
40
Ta = 25 °C
tp
Half Value - I
RSM
2
20
0
0
0
25
50
75
100
125
150
0
1
2
3
4
Ta, AMBIENT TEMPERATURE, (
°
C)
t, TIME (ms)
FIG.3 - STEADY STATE POWER DERATING
4.0
10000
FIG.4 - PULSE RATING CURVE
3.0
1000
2.0
100
1.0
10
0.1 s
0
25
50
75
100
125
150
175
1.0 s
10 s
100 s
1.0ms
10ms
tp, PULSE WIDTH
T
L
, LEAD TEMPERATURE ( C)
FIG.5 - 8 x 20 s PULSE WAVEFORM
FIG. 6 - CAPACITANCE VS. WORKING PEAK
REVERSE VOLTAGE
1000
tr
100
Pulse Width (tp) is defined
as that point where the peak
current decays = 8 s
Peak Value I
RSM
@ 8 s
Measured @ Zero Bias
100
Half Value I
RSM
/ 2 @ 20 s
50
Measured @ 50 %V
RWM
tp
10
0
0
20
40
60
80
1
1
10
100
200
t, TIME ( s)
WORKING PEAK REVERSE VOLTAGE (V)
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Embedded System
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