SMAJ26CA (Leiditech)
400W Transient Voltage Suppressor

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SMAJ Series 400W Transient Voltage Suppressor
DESCRIPTION:
TVS diodes can be used in a wide range of applications
which like consumer electronic products, automotive
industries, munitions, telecommunications, aerospace
industries, and intelligent control systems.
FEATURES:
Glass passivated or planar junction
Excellent clamping capability
Repetition rate (duty cycle): 0.01%
Typical IR less than 1μA above 10V.
Low profile package and low inductance
400W Peak Pulse power capability at 10×1000μs waveform.
Fast response time: typically less than 1.0ps from 0V to VBR min.
High temperature soldering: 260/10s at terminals.
Plastic package has Underwriters Laboratory Flammability 94V-0.
For surface mounted applications in order to optimize board space
SMA
Symbol
ABSOLUTE MAXIMUM RATINGS (TA=25ºC, RH=45%-75%, unless otherwise noted)
Parameter
Storage temperature range
Operating junction temperature range
Steady state power dissipation at TL=75
Peak pulse power dissipation on 10/1000μs
waveform
Maximum Instantaneous Forward Voltage at
30A for Unidirectional
Symbol
Tstg
Tj
PM(AV)
PPP
VF
Value
-55 to +125
-55 to +125
3.3
400
5.0
Unit
W
W
V
Rev : 01.06.2014
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SMAJ26CA (Leiditech)
400W Transient Voltage Suppressor

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SMAJ Series 400W Transient Voltage Suppressor
ELECTRICAL CHARACTERISTICS (TA=25)
Part Number
VR
IR@
VR
VBR@IT
IT
Uni-Polar Bi-Polar V
μA min(V) max(V) mA
SMAJ5.0A SMAJ5.0CA 5.0 100 6.40
7.00 10
SMAJ6.0A SMAJ6.0CA 6.0 100 6.67
7.37 10
SMAJ6.5A SMAJ6.5CA 6.5 50 7.22 7.98 10
SMAJ7.0A SMAJ7.0CA 7.0 50 7.78 8.60 10
SMAJ7.5A SMAJ7.5CA 7.5 50 8.33 9.21 1
SMAJ8.0A SMAJ8.0CA 8.0 20 8.89 9.83 1
SMAJ8.5A SMAJ8.5CA 8.5 10 9.44 10.40 1
SMAJ9.0A SMAJ9.0CA 9.0
5 10.00 11.10 1
SMAJ10A SMAJ10CA 10.0 2 11.10 12.30 1
SMAJ11A SMAJ11CA 11.0 1 12.20 13.50 1
SMAJ12A SMAJ12CA 12.0 1 13.30 14.70 1
SMAJ13A SMAJ13CA 13.0 1 14.40 15.90 1
SMAJ14A SMAJ14CA 14.0 1 15.60 17.20 1
SMAJ15A SMAJ15CA 15.0 1 16.70 18.50 1
SMAJ16A SMAJ16CA 16.0 1 17.80 19.70 1
SMAJ17A SMAJ17CA 17.0 1 18.90 20.90 1
SMAJ18A SMAJ18CA 18.0 1 20.00 22.10 1
SMAJ20A SMAJ20CA 20.0 1 22.20 24.50 1
SMAJ22A SMAJ22CA 22.0 1 24.40 26.90 1
SMAJ24A SMAJ24CA 24.0 1 26.70 29.50 1
SMAJ26A SMAJ26CA 26.0 1 28.90 31.90 1
SMAJ28A SMAJ28CA 28.0 1 31.10 34.40 1
SMAJ30A SMAJ30CA 30.0 1 33.30 36.80 1
SMAJ33A SMAJ33CA 33.0 1 36.70 40.60 1
SMAJ36A SMAJ36CA 36.0 1 40.00 44.20 1
SMAJ40A SMAJ40CA 40.0 1 44.40 49.10 1
SMAJ43A SMAJ43CA 43.0 1 47.80 52.80 1
SMAJ45A SMAJ45CA 45.0 1 50.00 55.30 1
SMAJ48A SMAJ48CA 48.0 1 53.30 58.90 1
SMAJ51A SMAJ51CA 51.0 1 56.70 62.70 1
VC@IPP
max(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
IPP
A
43.5
38.8
35.7
33.3
31.0
29.4
27.8
26.0
23.5
22.0
20.1
18.6
17.3
16.4
15.4
14.5
13.7
12.4
11.3
10.3
9.5
8.8
8.3
7.5
6.9
6.2
5.8
5.5
5.2
4.9
Rev : 01.06.2014
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SMAJ26CA (Leiditech)
400W Transient Voltage Suppressor

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SMAJ Series 400W Transient Voltage Suppressor
ELECTRICAL CHARACTERISTICS (TA=25, continued)
Part Number
Uni-Polar Bi-Polar
VR
IR@
VR
VBR@IT
IT VC@IPP IPP
V μA min(V) max(V) mA max(V) A
SMAJ54A SMAJ54CA 54.0 1 60.00 66.30 1
87.1 4.6
SMAJ58A SMAJ58CA 58.0 1 64.40 71.20 1
93.6 4.3
SMAJ60A SMAJ60CA 60.0 1 66.70 73.70 1
96.8 4.1
SMAJ64A SMAJ64CA 64.0 1 71.10 78.60 1 103.0 3.9
SMAJ70A SMAJ70CA 70.0 1 77.80 86.00 1 113.0 3.6
SMAJ75A SMAJ75CA 75.0 1 83.30 92.10 1 121.0 3.3
SMAJ78A SMAJ78CA 78.0 1 86.70 95.80 1 126.0 3.2
SMAJ85A SMAJ85CA 85.0 1 94.40 104.0 1 137.0 2.9
SMAJ90A SMAJ90CA 90.0
1
100.0 111.0
1
146.0 2.8
SMAJ100A SMAJ100CA 100.0 1
111.0 123.0 1
162.0 2.5
SMAJ110A SMAJ110CA 110.0 1
122.0 135.0 1
177.0 2.3
SMAJ120A SMAJ120CA 120.0 1
133.0 147.0 1
193.0 2.1
SMAJ130A SMAJ130CA 130.0 1
144.0 159.0 1
209.0 1.9
SMAJ150A SMAJ150CA 150.0 1
167.0 185.0 1
243.0 1.7
SMAJ160A SMAJ160CA 160.0 1
178.0 197.0 1
259.0 1.6
SMAJ170A SMAJ170CA 170.0 1
189.0 209.0 1
275.0 1.5
SMAJ180A SMAJ180CA 180.0 1
201.0 222.0 1
292.0 1.4
SMAJ200A SMAJ200CA 200.0 1
224.0 247.0 1
324.0 1.3
SMAJ220A SMAJ220CA 220.0 1
246.0 272.0 1
356.0 1.1
SMAJ250A SMAJ250CA 250.0 1
279.0 309.0 1
405.0 1.0
SMAJ300A SMAJ300CA 300.0 1
335.0 371.0 1
486.0 0.8
SMAJ350A SMAJ350CA 350.0 1
391.0 432.0 1
567.0 0.7
SMAJ400A SMAJ400CA 400.0 1
447.0 494.0 1
648.0 0.6
SMAJ440A SMAJ440CA 440.0 1
492.0 543.0 1
713.0 0.6
Surge waveform: 10/1000μs
VR Stand-off Voltage -- Maximum voltage that can be applied
VBRBreakdown Voltage
VCClamping Voltage -- Peak voltage measured across the suppressor at a specified Ipp
IRReverse Leakage Current
Rev : 01.06.2014
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SMAJ26CA (Leiditech)
400W Transient Voltage Suppressor

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SMAJ Series 400W Transient Voltage Suppressor
ORDERING INFORMATION
RATINGS AND V-I CHARACTERISTICS CURVES (TA=25ºC, unless otherwise noted)
FIG.1:V- I curve characteristics
(Uni-directional)
FIG.2:V- I curve characteristics
(Bi-directional)
IPP
VC VBR VR
VF
V
VC VBR VR
IT
IR
IR
IT
V
VR VBR VC
IPP IPP
FIG.3: Pulse waveform
IPPM(%IRSM)
150
tr=10μs
tr = rise time to peak value
td = decay time to half value
100 Peak value
Half value
50
td
0
0 1.0
t(ms)
2.0
3.0
4.0
FIG.4: Pulse derating curve
PPP derating in percentage(%)
100
80
60
40
20
0 TA()
0 25 50 75 100 125 150 175
Rev : 01.06.2014
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SMAJ26CA (Leiditech)
400W Transient Voltage Suppressor

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SMAJ Series 400W Transient Voltage Suppressor
SOLDERING PARAMETERS
Reflow Condition
Pb-Free assembly
(see FIG.5)
Pre
Heat
-Temperature Min (Ts(min))
-Temperature Max(Ts(max))
-Time (Min to Max) (ts)
+150
+200
60-180 secs.
Average ramp up rate (Liquid us Temp
(TL) to peak)
Ts(max) to TL - Ramp-up Rate
3/sec. Max
3/sec. Max
Reflow
-Temperature(TL)(Liquid us)
-Temperature(tL)
+217
60-150 secs.
Peak Temp (Tp)
+260(+0/-5)
Time within 5of actual Peak Temp (tp) 30 secs. Max
Ramp-down Rate
6/sec. Max
Time 25to Peak Temp (TP)
8 min. Max
Do not exceed
+260
FIG.5: Reflow condition
TP
TL
TS(max)
Ramp-up
TS(min)
Preheat
ts
tp
Critical Zone
TL to TP
tL
Ramp-down
25 time to peak temperatue
(t 25to peak)
Time
PACKAGE MECHANICAL DATA
A
DE
J
K
G
DO-214AC (SMA)
Rev : 01.06.2014
Dimensions
Ref. Millimeters
Inches
Min. Max. Min. Max.
A 4.25 4.65 0.167 0.183
B 2.50 2.90 0.098 0.114
C 1.35 1.65 0.053 0.065
D 0.76 1.52 0.030 0.060
E 4.93 5.28 0.194 0.208
F 0.051 0.203 0.002 0.008
G 0.15 0.31 0.006 0.012
H 1.98 2.41 0.078 0.095
J 6.50
0.256
K
2.30
0.090
L 1.70
0.067
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SMAJ26CA (Leiditech)
400W Transient Voltage Suppressor

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SMAJ Series 400W Transient Voltage Suppressor
TAPE AND REEL SPECIFICATION-SMA
d P0 P1
AP
OUTLINE
TAPING
REEL
(PCS)
5,000
Cathode
Dimensions
Ref.
Millimeters
Inches
A 2.79 ± 0.3 0.110 ± 0.012
B 5.33 ± 0.3 0.210 ± 0.012
d
1.5 ± 0.1
0.059 ± 0.004
D 330.0
13.0
D2
13 ± 1
0.512 ± 0.039
E
1.5 ± 0.2
0.059 ± 0.008
F 5.65 ± 0.2 0.222 ± 0.008
P
4.0 ± 0.2
0.157 ± 0.008
P0
4.0 ± 0.2
0.157 ± 0.008
P1
2.0 ± 0.2
0.079 ± 0.008
W
12.0 ± 0.2
0.472 ± 0.008
W1
16.8 ± 2.0
0.661 ± 0.079
PER CARTON
(PCS)
80,000
REEL DIAMETERS
(mm)
330
Shanghai Leiditech Electronic Co.,Ltd
Email: sale1@leiditech.com
Tel : +86- 021 50828806
Fax : +86- 021 50477059
Rev : 01.06.2014
6/6
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