TVS Diodes
Surface Mount – 200W > SMF Series
SMF Series
RoHS
Pb e3
Description
The SMF series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Uni-directional
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
Agency Approvals
Agency
Agnecy File Number
E230531
Maximum Ratings and Thermal Characteristics
(TA=25OC unless otherwise noted)
Parameter
Symbol
Peak Pulse Power Dissipation 8/20μs
at TA=25ºC (Note 1)
10/1000μs (Note 2)
PPPM
Value
1000
200
Unit
W
Power Dissipation On Infinite Heat Sink at
TL=50ºC
PD
1
W
Thermal Resistance Junction- to- Ambient
RƟJA
220
°C/W
Thermal Resistance Junction- to- Lead
RƟJL
100
°C/W
Operating Temperature Range
TJ
-65 to 150
°C
TSTG
-65 to 175
°C
Storage Temperature Range
Notes:
1. Non-repetitive current pulse, per Fig. 4 and derated above TJ (initial) =25ºC per Fig. 3.
2. SMF90A~SMF100A Peak Pulse Power Dissipation is 170W min, 200W typical @ 10/1000us
Functional Diagram
Bi-directional
Cathode
Anode
Features
•2
00W peak pulsepower
capability at 10/1000µs
waveform, repetition rate
(duty cycle): 0.01%
•Compatible with
industrial standard
package SOD-123FL
•L
ow profile: maximum
height of 1.1mm.
• Low inductance, excellent
clamping capability
•F
or surface mounted
applications to optimize
board space
•H
igh 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)
•E
SD 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 VBR 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-STD609A.01)
• UL Recognized to UL
497B as an Isolated Loop
Circuit Protector.
Uni-directional
Applications
Additional Infomarion
Datasheet
Resources
Samples
SMF devices are ideal for the protection of I/O interfaces,
VCC bus and other vulnerable circuit used in cellular
phones, portable devices, business machines, power
supplies and other consumer applications.
© 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
Breakdown Voltage VBR
(Volts) @ IT
Marking Code
Test Current IT
(mA)
Maximum
Maximum Peak
Reverse Stand Maximum ReClamping
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
Uni
Bi
MIN
MAX
SMF5.0A
SMF5.0CA
AE
HE
6.40
7.00
10
5.0
400
21.7
9.2
Uni
X
Bi
-
SMF6.0A
SMF6.0CA
AG
HG
6.67
7.37
10
6.0
400
19.4
10.3
X
-
SMF6.5A
SMF6.5CA
AK
HK
7.22
7.98
10
6.5
250
17.9
11.2
X
-
SMF7.0A
SMF7.0CA
AM
HM
7.78
8.60
10
7.0
100
16.7
12.0
X
-
SMF7.5A
SMF7.5CA
AP
HP
8.33
9.21
1
7.5
50
15.5
12.9
X
-
SMF8.0A
SMF8.0CA
AR
HR
8.89
9.83
1
8.0
25
14.7
13.6
X
-
SMF8.5A
SMF8.5CA
AT
HT
9.44
10.40
1
8.5
10
13.9
14.4
X
-
SMF9.0A
SMF9.0CA
AV
HV
10.00
11.10
1
9.0
2.5
13.0
15.4
X
-
SMF10A
SMF10CA
AX
HX
11.10
12.30
1
10
2.5
11.8
17.0
X
-
SMF11A
SMF11CA
AZ
HZ
12.20
13.50
1
11
2.5
11.0
18.2
X
-
SMF12A
SMF12CA
BE
IE
13.30
14.70
1
12
2.5
10.1
19.9
X
-
SMF13A
SMF13CA
BG
IG
14.40
15.90
1
13
1.0
9.3
21.5
X
-
SMF14A
SMF14CA
BK
IK
15.60
17.20
1
14
1.0
8.6
23.2
X
-
SMF15A
SMF15CA
BM
IM
16.70
18.50
1
15
1.0
8.2
24.4
X
-
SMF16A
SMF16CA
BP
IP
17.80
19.70
1
16
1.0
7.7
26.0
X
-
SMF17A
SMF17CA
BR
IR
18.90
20.90
1
17
1.0
7.2
27.6
X
-
SMF18A
SMF18CA
BT
IT
20.0 0
22.10
1
18
1.0
6.8
29.2
X
-
SMF20A
SMF20CA
BV
IV
22.20
24.50
1
20
1.0
6.2
32.4
X
-
SMF22A
SMF22CA
BX
IX
24.40
26.90
1
22
1.0
5.6
35.5
X
-
SMF24A
SMF24CA
BZ
IZ
26.70
29.50
1
24
1.0
5.1
38.9
X
-
SMF26A
SMF26CA
CE
JE
28.90
31.90
1
26
1.0
4.8
42.1
X
-
SMF28A
SMF28CA
CG
JG
31.10
34.40
1
28
1.0
4.4
45.4
X
-
SMF30A
SMF30CA
CK
JK
33.30
36.80
1
30
1.0
4.1
48.4
X
-
SMF33A
SMF33CA
CM
JM
36.70
40.60
1
33
1.0
3.8
53.3
X
-
SMF36A
SMF36CA
CP
JP
40.00
44.20
1
36
1.0
3.4
58.1
X
-
SMF40A
SMF40CA
CR
JR
44.40
49.10
1
40
1.0
3.1
64.5
X
-
SMF43A
SMF43CA
CT
JT
47.80
52.80
1
43
1.0
2.9
69.4
X
-
SMF45A
SMF45CA
CV
JV
50.00
55.30
1
45
1.0
2.8
72.7
X
-
SMF48A
SMF48CA
CX
JX
53.30
58.90
1
48
1.0
2.6
77.4
X
-
SMF51A
SMF51CA
CZ
JZ
56.70
62.70
1
51
1.0
2.4
82.4
X
-
SMF54A
SMF54CA
DE
KE
60.00
66.30
1
54
1.0
2.3
87.1
X
-
SMF58A
SMF58CA
RG
KG
64.40
71.20
1
58
1.0
2.1
93.6
-
-
SMF60A
SMF60CA
RK
KK
66.70
73.70
1
60
1.0
2.1
96.8
-
-
SMF64A
SMF64CA
RM
KM
71.10
78.60
1
64
1.0
1.9
103.0
-
-
SMF70A
SMF70CA
RP
KP
77.80
86.00
1
70
1.0
1.7
113.0
-
-
SMF75A
SMF75CA
RR
KR
83.30
92.10
1
75
1.0
1.6
121.0
-
-
SMF78A
SMF78CA
RT
KT
86.70
95.80
1
78
1.0
1.6
126.0
-
-
SMF85A
SMF85CA
RV
KV
94.40
104.00
1
85
1.0
1.5
137.0
-
-
SMF90A
-
RW
-
100.00
111.00
1
90
1.0
1.2
146.0
-
-
SMF100A
-
RX
-
111.00
123.00
1
100
1.0
1.1
162.0
-
-
SMF110A
-
SE
-
122.00
135.00
1
110
1.0
1.1
177.0
-
-
SMF120A
-
SG
-
133.00
147.00
1
120
1.0
1.0
193.0
-
-
SMF130A
-
SK
-
144.00
159.00
1
130
1.0
1.0
209.0
-
-
SMF150A
-
SM
-
167.00
185.00
1
150
1.0
0.8
243.0
-
-
SMF160A
-
SP
-
178.00
197.00
1
160
1.0
0.8
259.0
-
-
SMF170A
-
SR
-
189.00
209.00
1
170
1.0
0.7
275.0
-
-
SMF180A
-
ST
-
201.00
222.00
1
180
1.0
0.7
292.0
-
-
SMF188A
-
SV
-
209.00
231.00
1
188
1.0
0.7
304.0
-
-
SMF200A
-
SX
-
224.00
247.00
1
200
1.0
0.6
324.0
-
-
SMF220A
-
SZ
-
246.00
272.00
1
220
1.0
0.6
356.0
-
-
SMF250A
-
TE
-
279.00
309.00
1
250
1.0
0.5
405.0
-
-
-Notes:
1. VBR measured after IT applied for 300µs, IT = 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
Ipp
Vc VBR VR
Vc VBR VR
V
IR VF
IT
IR
IT
VR VBR Vc
V
Ipp
Ipp
PPPM
VR
VBR
VC
IR
VF
IT
IR
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
Figure 2 - Peak Pulse Power Rating Curve
Voltage Transients
PPPM-Peak Pulse Power (kW)
10
Voltage or Current
Voltage Across TVS
Current Through TVS
1
0.1
0.000001
Time
0.00001
0.0001
0.001
td-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
Figure 4 - Pulse Waveform - 10/1000µS
150
80%
IPPM- Peak Pulse Current, % IRSM
Peak Pluse Power(PPP) or Current(IPP)
Derating in Percentage %
100%
SMF5.0 ~ SMF100
SMF110 ~ SMF250
60%
40%
20%
0%
0
25
50
75
100
125
150
175
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of IPPM
Peak Value
IPPM
100
Half Value
IPPM IPPM
( )
2
50
0
TJ Initial Junction Temperature(˚C)
10/1000µsec. Waveform
as defined by R.E.A
td
0
1.0
2.0
3.0
4.0
t-Time (ms)
Figure 6 - Typical Junction Capacitance
Figure 5 - Forward Voltage
10000
0.9
0.8
Uni-Directional V=0V
1000
Bi-Directional V=0V
0.7
Cj(pF)
Vf - Typical forward dropped voltage
tr=10µsec
0.6
100
0.5
Uni/Bi-Directional V=VR
10
0.4
0
-55
10
75
1
140
Temperature (ºC)
1
10
100
1000
VBR - 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
IFSM - Peak Forward Surve Current(A)
I F - Peak Forward Current(A)
35
10
1
0.1
0.01
0
0.5
1
1.5
2
2.5
3
V F - Peak Forward Voltage(V)
3.5
4
30
25
20
15
10
5
0
1
10
100
Number of Cycles at 60 Hz
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/15/20
TVS Diodes
Surface Mount – 200W > SMF Series
Soldering Parameters
Lead–free assembly
Pre Heat
- Temperature Min (Ts(min))
150°C
- Temperature Max (Ts(max))
200°C
- Time (min to max) (ts)
60 – 120 secs
Average ramp up rate (Liquidus Temp (TL) to peak
3°C/second max
TS(max) to TL - Ramp-up Rate
3°C/second max
Reflow
- Temperature (TL) (Liquidus)
217°C
- Time (min to max) (tL)
60 – 150 seconds
Peak Temperature (TP)
260+0/-5 °C
Time within 5°C of actual peak Temperature (tp)
30 Seconds Max
Ramp-down Rate
6°C/second Max
Time 25°C to peak Temperature (TP)
8 minutes Max.
Do not exceed
260°C
tp
TP
Ramp-up
TL
Temperature (T)
Reflow Condition
Critical Zone
TL to TP
tL
Ts(max)
Ramp-down
Ts(min)
ts
Preheat
25˚C
t 25˚C to Peak
Time (t)
Environmental Specifications
Physical Specifications
Case
SOD-123FL plastic over glass passivated junction
High Temp. Storage
JESD22-A103
Polarity
Color band denotes cathode except bipolar
HTRB
JESD22-A108
Terminal
Matte tin-plated leads, solderable per JESD22-B102
Temperature Cycling
JESD22-A104
MSL
JEDEC-J-STD-020, Level 1
H3TRB
JESD22-A101
RSH
JESD22-A111
Dimensions - SOD-123FL Package
Dimensions
Min
Max
2.50
2.90
0.0984
0.1142
2.90
3.10
0.1142
0.1220
3.40
3.90
0.1339
0.1535
0.70
1.20
0.0275
0.0472
D
1.50
2.00
0.0591
0.0787
E
0.35
0.90
0.0138
0.0354
F
0.05
0.26
0.0020
0.0102
G
0.00
0.10
0.000
0.0039
SMF5.0A~SMF100A
0.95
1.10
0.0374
0.0433
SMF110A~SMF250A
SMF5.0CA~SMF85CA
0.90
1.08
0.0354
0.0425
SMF5.0A~SMF100A
SMF110A~SMF250A
SMF5.0CA~SMF85CA
B
E
C
F
C
D
G
H
H
Inches
Max
E
B
A
A
Millimeters
Min
Mounting Pad Layout
1.6 (0.062)
1.3 (0.051)
1.4 (0.055)
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/15/20
TVS Diodes
Surface Mount – 200W > SMF Series
Part Numbering System
SMF
Part Marking System
xx C A
LF
5% VBR Voltage Tolerance
Cathode Band
(for uni-directional products only)
XX
YM
Bi-directional
Marking Code
Trace Code Marking
VR Voltage
Y:Year Code
M: Month Code
Series
Packaging Options
Component
Package
SOD-123FL
Part number
SMFXXX
SMFXXX-T13
Quantity
SOD-123FL
Packaging Option
Packaging Specification
3000
Tape & Reel – 8mm tape/7” reel
EIA RS-481
10000
Tape & Reel – 8mm tape/13” reel
EIA RS-481
Tape and Reel Specification
0.157
(4.0)
0.31
(8.0)
0.157
(4.0)
0.059 DIA
(1.5)
7.0 (178)
13.0 (330)
0.80 (20.2)
Arbor Hole Dia.
0.33
(8.5)
Cover tape
Dimensions are in inches
(and millimeters).
Direction of Feed
Cathode
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are
not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/15/20
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