Transient Voltage Suppression Diodes
Surface Mount – 200W > SMF Series
SMF
Series
RoHS |
Uni-directional
Agency Approvals
AGENCY |
AGENCY FILE NUMBER |
E230531
Maximum Ratings and Thermal Characteristics (TA=25°C unless otherwise noted)
Parameter |
Symbol |
Value |
Unit |
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Peak Pulse Power Dissipation at |
PPPM |
200 |
W |
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TA=25ºC by 10/1000µs (Note 1) |
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Thermal Resistance Junctionto- |
RTHJ-A |
220 |
°C/W |
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Ambient |
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Thermal Resistance Junctionto- |
RTHJ-L |
100 |
°C/W |
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Lead |
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Operating and Storage Temperature |
TJ,TSTG |
-55 to 150 |
°C |
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Range |
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Notes:
1. Non-repetitive current pulse, per Fig. 4 and derated above TA=25ºC per Fig. 3.
Functional Diagram
Cathode 
Anode
Uni-directional
Description
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 low height profile (1.1mm) in the industry.
Features
•Compatible with industrial standard package SOD-123F
•For surface mounted applications to optimize board space
•Low profile: maximum height of 1.1mm.
•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 (IEC801-2)
•EFT protection of data lines in accordance with
IEC 61000-4-4 (IEC801-4)
•Low inductance, excellent clamping capability
•200W peak pulsepower capability at 10/1000µs waveform, repetition rate
(duty cycle): 0.01%
•Fast response time: typically less than 1.0ns from 0 Volts to VBR min
•High temperature soldering: 260°C/40 seconds at terminals
•Glass passivated junction
•Built-in strain relief
•Meet MSL level1, per J-STD-020, LF maximum peak of 260°C
•Matte tin lead–free plated
•Halogen-free and RoHS compliant
Applications
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.
Additional Information
Datasheet |
Resources |
Samples |
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© 2014 Littelfuse, Inc.
Specifications are subject to change without notice. Revised: 01/20/14
Transient Voltage Suppression Diodes
Surface Mount – 200W > SMF Series
Electrical Characteristics (TA=25°C unless otherwise noted)
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Breakdown |
Test |
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Maximum |
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Part |
Marking |
Voltage VBR |
Reverse |
Maximum |
Maximum |
Agency |
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(Volts) @ IT |
Current |
Reverse |
Peak Pulse |
Clamping |
Approval |
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Number |
Code |
Stand off |
Voltage @ |
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IT |
Leakage @ VR |
Current Ipp |
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Voltage VR (V) |
Ipp |
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MIN |
MAX |
(mA) |
IR |
(µA) |
(A) |
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VC (V) |
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SMF5.0A |
AE |
6.40 |
7.00 |
10 |
5.0 |
|
400 |
21.7 |
9.2 |
X |
|
SMF6.0A |
AG |
6.67 |
7.37 |
10 |
6.0 |
|
400 |
19.4 |
10.3 |
X |
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SMF6.5A |
AK |
7.22 |
7.98 |
10 |
6.5 |
|
250 |
17.9 |
11.2 |
X |
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SMF7.0A |
AM |
7.78 |
8.60 |
10 |
7.0 |
|
100 |
16.7 |
12.0 |
X |
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SMF7.5A |
AP |
8.33 |
9.21 |
1 |
7.5 |
|
50 |
15.5 |
12.9 |
X |
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SMF8.0A |
AR |
8.89 |
9.83 |
1 |
8.0 |
|
25 |
14.7 |
13.6 |
X |
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SMF8.5A |
AT |
9.44 |
10.40 |
1 |
8.5 |
|
10 |
13.9 |
14.4 |
X |
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SMF9.0A |
AV |
10.00 |
11.10 |
1 |
9.0 |
|
5 |
13.0 |
15.4 |
X |
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SMF10A |
AX |
11.10 |
12.30 |
1 |
10 |
|
2.5 |
11.8 |
17.0 |
X |
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SMF11A |
AZ |
12.20 |
13.50 |
1 |
11 |
|
2.5 |
11.0 |
18.2 |
X |
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SMF12A |
BE |
13.30 |
14.70 |
1 |
12 |
|
2.5 |
10.1 |
19.9 |
X |
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SMF13A |
BG |
14.40 |
15.90 |
1 |
13 |
|
1.0 |
9.3 |
21.5 |
X |
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SMF14A |
BK |
15.60 |
17.20 |
1 |
14 |
|
1.0 |
8.6 |
23.2 |
X |
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SMF15A |
BM |
16.70 |
18.50 |
1 |
15 |
|
1.0 |
8.2 |
24.4 |
X |
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SMF16A |
BP |
17.80 |
19.70 |
1 |
16 |
|
1.0 |
7.7 |
26.0 |
X |
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SMF17A |
BR |
18.90 |
20.90 |
1 |
17 |
|
1.0 |
7.2 |
27.6 |
X |
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SMF18A |
BT |
20.0 0 |
22.10 |
1 |
18 |
|
1.0 |
6.8 |
29.2 |
X |
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SMF20A |
BV |
22.20 |
24.50 |
1 |
20 |
|
1.0 |
6.2 |
32.4 |
X |
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SMF22A |
BX |
24.40 |
26.90 |
1 |
22 |
|
1.0 |
5.6 |
35.5 |
X |
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SMF24A |
BZ |
26.70 |
29.50 |
1 |
24 |
|
1.0 |
5.1 |
38.9 |
X |
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SMF26A |
CE |
28.90 |
31.90 |
1 |
26 |
|
1.0 |
4.8 |
42.1 |
X |
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SMF28A |
CG |
31.10 |
34.40 |
1 |
28 |
|
1.0 |
4.4 |
45.4 |
X |
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SMF30A |
CK |
33.30 |
36.80 |
1 |
30 |
|
1.0 |
4.1 |
48.4 |
X |
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SMF33A |
CM |
36.70 |
40.60 |
1 |
33 |
|
1.0 |
3.8 |
53.3 |
X |
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SMF36A |
CP |
40.0 0 |
44.20 |
1 |
36 |
|
1.0 |
3.4 |
58.1 |
X |
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SMF40A |
CR |
44.40 |
49.10 |
1 |
40 |
|
1.0 |
3.1 |
64.5 |
X |
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SMF43A |
CT |
47.80 |
52.80 |
1 |
43 |
|
1.0 |
2.9 |
69.4 |
X |
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SMF45A |
CV |
50.00 |
55.30 |
1 |
45 |
|
1.0 |
2.8 |
72.7 |
X |
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SMF48A |
CX |
53.30 |
58.90 |
1 |
48 |
|
1.0 |
2.6 |
77.4 |
X |
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SMF51A |
CZ |
56.70 |
62.70 |
1 |
51 |
|
1.0 |
2.4 |
82.4 |
X |
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SMF54A |
DE |
60.00 |
66.30 |
1 |
54 |
|
1.0 |
2.3 |
87.1 |
X |
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SMF58A |
RG |
64.40 |
71.20 |
1 |
58 |
|
1.0 |
2.1 |
93.6 |
X |
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SMF60A |
RK |
66.70 |
73.70 |
1 |
60 |
|
1.0 |
1.8 |
96.8 |
X |
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SMF64A |
RM |
71.10 |
78.60 |
1 |
64 |
|
1.0 |
1.7 |
103.0 |
X |
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SMF70A |
RP |
77.80 |
86.00 |
1 |
70 |
|
1.0 |
1.5 |
113.0 |
X |
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SMF75A |
RR |
83.30 |
92.10 |
1 |
75 |
|
1.0 |
1.4 |
121.0 |
X |
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SMF78A |
RT |
86.70 |
95.80 |
1 |
78 |
|
1.0 |
1.4 |
126.0 |
X |
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SMF85A |
RV |
94.40 |
104.00 |
1 |
85 |
|
1.0 |
1.3 |
137.0 |
X |
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Notes:
1.VBR measured after IT applied for 300µs, IT = sequare 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.
© 2014 Littelfuse, Inc. Specifications are subject to change without notice.
Revised: 01/20/14
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