TVS Diodes
Surface Mount – 200W > SMF Series
SMF Series
Description
Uni-directional
RoHS
Pb
e3
The SMF series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
SMF package is 50% smaller in footprint when compare
to SMA package and deliverying one of the low height
profiles (1.1mm) in the industry.
Bi-directional
Features
• 200W peak pulsepower
capability at 10/1000µs
waveform, repetition rate
(duty cycle): 0.01%
•Compatible with
industrial standard
package SOD-123FL
• Low profile: maximum
height of 1.1mm.
• Low inductance, excellent
clamping capability
• For surface mounted
applications to optimize
board space
• High temperature
to reflow soldering
guaranteed:
260°C/430sec
• Typical failure mode is
short from over-specified
voltage or current
• Whisker test is conducted
based on JEDEC
JESD201A per its table 4a
and 4c
• IEC-61000-4-2 ESD
30kV(Air), 30kV (Contact)
• ESD protection of data
lines in accordance with
IEC 61000-4-2
• EFT protection of data
lines in accordance with
IEC 61000-4-4
• Fast response time:
typically less than 1.0ns
from 0 Volts to V
BR
min
• Glass passivated junction
• Built-in strain relief
• Plastic package is
flammability rated V-0 per
UL 94
• Meet MSL level1, per
J-STD-020, LF maximun
peak of 260
°
C
• Matte tin lead–free plated
• Halogen-free and RoHS
compliant
• Pb-free E3 means 2nd
level interconnect is
Pb-free and the terminal
finish material is tin(Sn)
(IPC/ JEDEC J-STD-
609A.01)
• UL Recognized to UL
497B as an Isolated Loop
Circuit Protector.
Agency Approvals
Agency
Agnecy File Number
E230531
Maximum Ratings and Thermal Characteristics
(T
A
=25
O
C unless otherwise noted)
Parameter
Peak Pulse Power Dissipation 8/20μs
at T
A
=25ºC
(Note 1)
10/1000μs
(Note 2)
Power Dissipation On Infinite Heat Sink at
TL=50ºC
Thermal Resistance Junction- to- Ambient
Thermal Resistance Junction- to- Lead
Operating Temperature Range
Storage Temperature Range
Symbol
P
PPM
P
D
R
ƟJA
R
ƟJL
T
J
T
STG
Value
1000
200
1
220
100
-65 to 150
-65 to 175
Unit
W
W
°C/W
°C/W
°C
°C
Notes:
1.
Non-repetitive current pulse, per Fig. 4 and derated above T
J
(initial) =25ºC per Fig. 3.
2.
SMF90A~SMF100A Peak Pulse Power Dissipation is 170W min, 200W typical @ 10/1000us
Functional Diagram
Bi-directional
Cathode
Uni-directional
Anode
Additional Infomarion
Applications
SMF devices are ideal for the protection of I/O interfaces,
V
CC
bus and other vulnerable circuit used in cellular
phones, portable devices, business machines, power
supplies and other consumer applications.
Datasheet
Resources
Samples
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/15/20
TVS Diodes
Surface Mount – 200W > SMF Series
Electrical Characteristics
(T =25°C unless otherwise noted)
A
Part Number
Uni
Bi
Marking Code
Uni
Bi
Breakdown Voltage VBR
(Volts) @ IT
MIN
MAX
Test Current IT
(mA)
Maximum
Maximum Peak
Reverse Stand Maximum Re-
Clamping
Pulse Current
off Voltage verse Leakage
Voltage @Ipp
Ipp (A)
VR (V)
@ VR IR (µA)
VC (V)
10*1000us
10*1000us
Agency Approval
Uni
Bi
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
SMF180A
SMF188A
SMF200A
SMF220A
SMF250A
SMF5.0CA
SMF6.0CA
SMF6.5CA
SMF7
.0CA
SMF7
.5CA
SMF8.0CA
SMF8.5CA
SMF9.0CA
SMF10CA
SMF11CA
SMF12CA
SMF13CA
SMF14CA
SMF15CA
SMF16CA
SMF17CA
SMF18CA
SMF20CA
SMF22CA
SMF24CA
SMF26CA
SMF28CA
SMF30CA
SMF33CA
SMF36CA
SMF40CA
SMF43CA
SMF45CA
SMF48CA
SMF51CA
SMF54CA
SMF58CA
SMF60CA
SMF64CA
SMF70CA
SMF75CA
SMF78CA
SMF85CA
-
-
-
-
-
-
-
-
-
-
-
-
-
AE
AG
AK
AM
AP
AR
AT
AV
AX
AZ
BE
BG
BK
BM
BP
BR
BT
BV
BX
BZ
CE
CG
CK
CM
CP
CR
CT
CV
CX
CZ
DE
RG
RK
RM
RP
RR
RT
RV
RW
RX
SE
SG
SK
SM
SP
SR
ST
SV
SX
SZ
TE
HE
HG
HK
HM
HP
HR
HT
HV
HX
HZ
IE
IG
IK
IM
IP
IR
IT
IV
IX
IZ
JE
JG
JK
JM
JP
JR
JT
JV
JX
JZ
KE
KG
KK
KM
KP
KR
KT
KV
-
-
-
-
-
-
-
-
-
-
-
-
-
6.40
6.67
7
.22
7
.78
8.33
8.89
9.44
10.00
11.10
12.20
13.30
14.40
15.60
16.70
17
.80
18.90
20.0 0
22.20
24.40
26.70
28.90
31.10
33.30
36.70
40.00
44.40
47
.80
50.00
53.30
56.70
60.00
64.40
66.70
71.10
77
.80
83.30
86.70
94.40
100.00
111.00
122.00
133.00
144.00
167
.00
178.00
189.00
201.00
209.00
224.00
246.00
279.00
7
.00
7
.37
7
.98
8.60
9.21
9.83
10.40
11.10
12.30
13.50
14.70
15.90
17
.20
18.50
19.70
20.90
22.10
24.50
26.90
29.50
31.90
34.40
36.80
40.60
44.20
49.10
52.80
55.30
58.90
62.70
66.30
71.20
73.70
78.60
86.00
92.10
95.80
104.00
111.00
123.00
135.00
147
.00
159.00
185.00
197
.00
209.00
222.00
231.00
247
.00
272.00
309.00
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
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
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
180
188
200
220
250
400
400
250
100
50
25
10
2.5
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
1.0
1.0
1.0
1.0
1.0
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
2.1
1.9
1.7
1.6
1.6
1.5
1.2
1.1
1.1
1.0
1.0
0.8
0.8
0.7
0.7
0.7
0.6
0.6
0.5
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
103.0
113.0
121.0
126.0
137
.0
146.0
162.0
177
.0
193.0
209.0
243.0
259.0
275.0
292.0
304.0
324.0
356.0
405.0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-Notes:
1.
V
BR
measured after I
T
applied for 300µs, I
T
= square wave pulse or equivalent.
2.
Surge current waveform per 10/1000µs exponential wave and derated per Fig.2.
3.
All terms and symbols are consistent with ANSI/IEEE C62.35.
4.
For bidirectional type having VR of 10 volts and less, the IR limit is double.
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/15/20
TVS Diodes
Surface Mount – 200W > SMF Series
I-V Curve Characteristics
Uni-directional
Bi-directional
I
pp
Vc V
BR
V
R
I
R
V
F
I
T
V
Vc V
BR
V
R
I
T
I
R
I
R
I
T
V
R
V
BR
Vc
V
I
pp
I
pp
P
PPM
V
R
V
BR
V
C
I
R
V
F
Peak Pulse Power Dissipation
--
Max power dissipation
Stand-off Voltage
--
Maximum voltage that can be applied to the TVS without operation
Breakdown Voltage
--
Maximum voltage that flows though the TVS at a specified test current (IT)
Clamping Voltage
--
Peak voltage measured across the TVS at a specified Ippm (peak impulse current)
Reverse Leakage Current
--
Current measured at VR
Forward Voltage Drop for Uni-directional
Ratings and Characteristic Curves
(T =25°C unless otherwise noted)
A
Figure 1 - TVS Transients Clamping Waveform
Voltage Transients
Figure 2 - Peak Pulse Power Rating Curve
10
P
PPM
-Peak Pulse Power (kW)
Voltage Across TVS
Voltage or Current
Current Through TVS
1
0.1
0.000001
Time
0.00001
0.0001
0.001
t
d
-Pulse Width (sec.)
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/15/20
TVS Diodes
Surface Mount – 200W > SMF Series
Ratings and Characteristic Curves
(T =25°C unless otherwise noted)
(Continued)
A
Figure 3 - Peak Pulse Power Derating Curve
100%
Figure 4 - Pulse Waveform - 10/1000
µ
S
150
I
PPM
- Peak Pulse Current, % I
RSM
tr=10µsec
Peak Value
IPPM
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of IPPM
Peak Pluse Power(PPP) or Current(IPP)
Derating in Percentage %
80%
SMF110 ~ SMF250
SMF5.0 ~ SMF100
100
60%
40%
Half Value
IPPM
IPPM
2
( )
10/1000µsec. Waveform
as defined by R.E.A
50
20%
0%
0
25
50
75
100
125
150
175
0
td
T
J
Initial Junction Temperature(˚C)
0
1.0
2.0
t-Time (ms)
3.0
4.0
Figure 5 - Forward Voltage
0.9
V
f
- Typical forward dropped voltage
0.8
0.7
0.6
0.5
0.4
0
-55
Figure 6 - Typical Junction Capacitance
10000
1000
Uni-Directional V=0V
Bi-Directional V=0V
Cj(pF)
100
Uni/Bi-Directional V=VR
10
10
75
140
1
Temperature (ºC)
1
10
100
1000
V
BR
- Reverse Breakdown Voltage(V)
Figure 7 - Peak Forward Voltage Drop vs.
Peak Forward Current
Figure 8 - Maximum Non-Repetitive Forward Surge
Current Uni-Directional Only
35
I F - Peak Forward Current(A)
10
IFSM - Peak Forward Surve Current(A)
0
0.5
1
1.5
2
2.5
3
3.5
4
30
25
20
15
10
5
0
1
10
Number of Cycles at 60 Hz
100
1
0.1
0.01
V F - Peak Forward Voltage(V)
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/15/20
TVS Diodes
Surface Mount – 200W > SMF Series
Soldering Parameters
Reflow Condition
- Temperature Min (T
s(min)
)
Pre Heat
- Temperature Max (T
s(max)
)
- Time (min to max) (t
s
)
Average ramp up rate (Liquidus Temp (T
L
) to peak
T
S(max)
to T
L
- Ramp-up Rate
Reflow
- Temperature (T
L
) (Liquidus)
- Time (min to max) (t
L
)
Lead–free assembly
150°C
200°C
60 – 120 secs
Temperature (T)
T
P
Ramp-up
t
p
Critical Zone
T
L
to T
P
3°C/second max
3°C/second max
217°C
60 – 150 seconds
260
+0/-5
°C
30 Seconds Max
6°C/second Max
8 minutes Max.
260°C
T
L
T
s(max)
t
L
T
s(min)
Ramp-down
Preheat
t
s
Peak Temperature (T
P
)
Time within 5°C of actual peak Temperature (t
p
)
Ramp-down Rate
Time 25°C to peak Temperature (T
P
)
Do not exceed
25˚C
t 25˚C to Peak
Time (t)
Physical Specifications
Case
Polarity
Terminal
SOD-123FL plastic over glass passivated junction
Color band denotes cathode except bipolar
Matte tin-plated leads, solderable per JESD22-B102
Environmental Specifications
High Temp. Storage
HTRB
Temperature Cycling
MSL
H3TRB
RSH
JESD22-A103
JESD22-A108
JESD22-A104
JEDEC-J-STD-020, Level 1
JESD22-A101
JESD22-A111
Dimensions
-
SOD-123FL Package
Dimensions
E
Millimeters
Min
2.50
2.90
3.40
0.70
1.50
0.35
0.05
0.00
0.95
0.90
Max
2.90
3.10
3.90
1.20
2.00
0.90
0.26
0.10
1.10
1.08
Inches
Min
0.0984
0.1142
0.1339
0.0275
0.0591
0.0138
0.0020
0.000
0.0374
0.0354
Max
0.1142
0.1220
0.1535
0.0472
0.0787
0.0354
0.0102
0.0039
0.0433
0.0425
A
A
B
SMF5.0A~SMF100A
SMF110A~SMF250A
SMF5.0CA~SMF85CA
B
C
D
E
F
G
SMF5.0A~SMF100A
C
D
E
F
Mounting Pad Layout
1.6 (0.062)
1.3 (0.051)
G
H
H
SMF110A~SMF250A
SMF5.0CA~SMF85CA
1.4 (0.055)
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/15/20
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