Silicon Avalanche Diodes
254
w w w . l i t t e l f u s e . c o m
400W Surface Mount Transient Voltage Supressors
SMAJ Series
FEATURES
RoHS
compliant
For surface mounted applications in order to optimize
board space
Low profile package
Built-in strain relief
Glass passivated junction
Low inductance
Excellent clamping capability
Repetition Rate (duty cycle): 0.01%
Fast response time: typically less than 1.0ps from 0 Volts to
V(BR) for unidirectional types
Typical IR less than 1A above 10V
High Temperature soldering: 250C/10 seconds at terminals
Plastic package has Underwriters Laboratory
Flammability 94V-O
MAXIMUM RATINGS AND CHARACTERISTICS
@25C AMBIENT TEMPERATURE (unless otherwise noted)
PARAMETER
Peak pulse power Dissipation on
10/1000s waveform
(note 1,2, FIG.1)
Peak pulse current of on 10\1000s
waveform (note 1, FIG.3)
Peak forward Surge Current, 8.3ms
Single Half SIne Wave Superimposed
on Rated Load, (JEDEC Method)
(note 2.3)
Operating junction and Storage
Temperature Range
VALUE
Min
400
SEE TABLE 1
40
-55 to +150
UNIT
Watts
Amps
Amps
C
Notes:
1. Non-repetitive current pulse, per Fig.3 and derated above TA=
25C per Fig.2
2. Mounted on 5.0mm2(0.03mm thick) Copper Pads to each
terminal
3. 8.3 ms single half sine-wave, or equivalent square wave, Duty
cycle= 4 pulses per minute maximum.
SYMBOL
PPPM
IPPM
IFSM
Tj, TsTG
SMAJ
C A
Voltage
Bi-Directional
5% Voltage Tolerance
Tape and reeled (5000 pcs)
ORDERING INFORMATION
Agency Approvals: Recognized under the Components Program
of Underwriters Laboratories.
Agency File Number: E128662
Mechanical Specifications:
Weight:
0.002ounce, 0.061 gram
Case:
JEDEC DO-214AC Molded Plastic over
glass passivated junction
Mounting Position:
Any
Polarity:
Color band denotes cathode except
Bipolar
Terminal:
Solder Plated, solderable per
MIL-STD-750, Method 2026
Standard Packaging:
12mm tape (EIA STD RS-481)
RoHS
Silicon Avalanche Diodes
255
w w w . l i t t e l f u s e . c o m
SMAJ Series
400W Surface Mount Transient Voltage Supressors
Part
Number
(Uni)
Part
Number
(Bi)
Device Marking
Code
Breakdown
Voltage
V
BR
(Volts) @ I
T
Maximum
Reverse
Leakage
I
R
@ V
R
(A)
Maximum
Clamping
Voltage
V
C
@ I
PP
(Volts)
Maximum
Peak Pulse
Current
I
PP
(A)
ELECTRICAL SPECIFICATION @ Tamb 25C
SMAJ5.0A SMAJ5.0CA AE WE 5.0
6.40 7.00 10
9.2
43.5
800
SMAJ6.0A SMAJ6.0CA AG WG 6.0
6.67 7.37 10
10.3
38.8
800
SMAJ6.5A SMAJ6.5CA AK WK 6.5
7.22 7.98 10
11.2
35.7
500
SMAJ7.0A SMAJ7.0CA AM WM 7.0
7.78 8.60 10
12.0
33.3
200
SMAJ7.5A SMAJ7.5CA AP WP 7.5
8.33 9.21
1
12.9
31.0
100
SMAJ8.0A SMAJ8.0CA AR WR 8.0
8.89 9.83 1
13.6
29.4
50
SMAJ8.5A SMAJ8.5CA AT WT 8.5
9.44
10.40 1
14.4
27.8
20
SMAJ9.0A SMAJ9.0CA AV WV 9.0
10.00
11.10 1
15.4
26.0
10
SMAJ10A SMAJ10CA AX WX 10.0 11.10
12.30 1
17.0
23.5
5
SMAJ11A SMAJ11CA AZ WZ 11.0 12.20
13.50 1
18.2
22.0
5
SMAJ12A SMAJ12CA BE XE 12.0 13.30
14.70 1
19.9
20.1
5
SMAJ13A SMAJ13CA BG XG 13.0 14.40
15.90 1
21.5
18.6
5
SMAJ14A SMAJ14CA BK XK 14.0 15.60
17.20 1
23.2
17.2
5
SMAJ15A SMAJ15CA BM XM 15.0 16.70
18.50 1
24.4
16.4
5
SMAJ16A SMAJ16CA BP XP 16.0 17.80
19.70 1
26.0
15.4
5
SMAJ17A SMAJ17CA BR XR 17.0 18.90
20.90 1
27.6
14.5
5
SMAJ18A SMAJ18CA BT XT 18.0 20.00
22.10 1
29.2
13.7
5
SMAJ20A SMAJ20CA BV XV 20.0 22.20
24.50 1
32.4
12.3
5
SMAJ22A SMAJ22CA BX XY 22.0 24.40
26.90 1
35.5
11.3
5
SMAJ24A SMAJ24CA BZ XZ 24.0 26.70
29.50 1
38.9
10.3
5
SMAJ26A SMAJ26CA CE YE 26.0 28.90
31.90 1
42.1
9.5
5
SMAJ28A SMAJ28CA CG YG 28.0 31.10
34.40 1
45.4
8.8
5
SMAJ30A SMAJ30CA CK YK 30.0 33.30
36.80 1
48.4
8.3
5
SMAJ33A SMAJ33CA CM YM 33.0 36.70
40.60 1
53.3
7.
5
5
SMAJ36A SMAJ36CA CP YP 36.0 40.00
44.20 1
58.1
6.9
5
SMAJ40A SMAJ40CA CR YR 40.0 44.40
49.10 1
64.5
6.2
5
SMAJ43A SMAJ43CA CT YT 43.0 47.80
52.80 1
69.4
5.8
5
SMAJ45A SMAJ45CA CV YV 45.0 50.00
55.30 1
72.7
5.5
5
SMAJ48A SMAJ48CA CX YX 48.0 53.30
58.90 1
77.4
5.2
5
SMAJ51A SMAJ51CA CZ YZ 51.0 56.70
62.70 1
82.4
4.9
5
SMAJ54A SMAJ54CA RE ZE 54.0 60.00
66.30 1
87.1
4.6
5
SMAJ58A SMAJ58CA RG ZG 58.0 64.40
71.20 1
93.6
4.3
5
SMAJ60A SMAJ60CA RK ZK 60.0 66.70
73.70 1
96.8
4.1
5
SMAJ64A SMAJ64CA RM ZM 64.0 71.10
78.60 1
103.0
3.9
5
SMAJ70A SMAJ70CA RP ZP 70.0 77.80
86.00 1
113.0
3.5
5
SMAJ75A SMAJ75CA RR ZR 75.0 83.30
92.10 1
121.0
3.3
5
SMAJ78A SMAJ78CA RT ZT 78.0 86.70
95.80 1
126.0
3.2
5
SMAJ85A SMAJ85CA RV ZV 85.0 94.40
104.00
1
137.0
2.9
5
SMAJ90A SMAJ90CA RX ZX 90.0 100.00
111.00
1
146.0
2.7
5
SMAJ100A SMAJ100CA RZ ZZ
100.0 111.00
123.00 1
162.0
2.5
5
SMAJ110A SMAJ110CA SE
VE
110.0 122.00
135.00 1
177.0
2.3
5
SMAJ120A SMAJ120CA SG VG 120.0 133.00
147.00 1
193.0
2.1
5
SMAJ130A SMAJ130CA SK VK 130.0 144.00
159.00 1
209.0
1.9
5
SMAJ150A SMAJ150CA SM VM 150.0 167.00
185.00 1
243.0
1.6
5
SMAJ160A SMAJ160CA SP
VP
160.0 178.00
197.00 1
259.0
1.5
5
SMAJ170A SMAJ170CA SR VR 170.0 189.00
209.00 1
275.0
1.5
5
SMAJ180A SMAJ180CA ST
VT
180.0 201.00
222.00 1
292.0
1.4
5
SMAJ200A SMAJ200CA SV VV 200.0 224.00
247.00 1
324.0
1.2
5
SMAJ220A SMAJ220CA SX VX 220.0 246.00
272.00 1
356.0
1.1
5
SMAJ250A SMAJ250CA SZ
VZ
250.0 279.00
309.00 1
405.0
1.0
5
SMAJ300A SMAJ300CA TE UE 300.0 335.00
371.00 1
486.0
0.8
5
SMAJ350A SMAJ350CA TG UG 350.0 391.00
432.00 1
567.0
0.7
5
SMAJ400A SMAJ400CA TK UK 400.0 447.00
494.00 1
648.0
0.6
5
SMAJ440A SMAJ440CA TM UM 440.0 492.00
543.00 1
713.0
0.6
5
Reverse
Stand off
Voltage
V
R
(Volts)
UNI
BI
MIN
MAX
For bidirectional type having Vrwm of 10 volts and less, the IR limit is double.
For parts without A (VBR is 10%).
Test
Current
I
T
(mA)
RoHS
6
SILICON DIODE
ARRA
YS
Silicon Avalanche Diodes
256
w w w . l i t t e l f u s e . c o m
400W Surface Mount Transient Voltage Supressors
SMAJ Series
Ratings and Characteristic Curves TA=25C unless otherwise noted
Fig. 1 Peak Pulse Power Rating
Fig. 3 Pulse Waveform
Fig. 5- Typ. Transient Thermal Impedance
Fig. 6- Maximum Non-Repetitive Peak
Fig. 4- Typical Junction Capacitance
Fig. 2 Pulse Derating Curve
td- Pulse Width (sec.)
TA- Ambient Temperature (C)
P
PPM
- Peak Pulse Power (KW)
I PPM
- Peak Pulse Current, % I
RSM
Transient Thermal Impedance
(
C/W)
I PSM
-Peak Forward Surge Current (A)
C
J-Junction Capacitance (pF)
Peak Pulse Power (P
PP
) or Current (I
PP
)
Derating in Percentage, %
0.1s
1.0s
10s
100s
1.0ms
10ms
0.1
1
10
100
0.2x0.2"(5.0x5.0mm)
Copper Pad Areas
0
0
0
0.1
1.0
10
100
50
100
150
1.0
2.0
3.0
4.0
0.001
0.01
0.1
1
10
100
1000
1
10
100
200
20000
10000
1000
100
10
1.0
10
100
200
10
100
0
25
25
50
50
75
75
100
100
125 150 175 200
tp- Pulse Duration(sec)
Number of Cycles at 60Hz
VWM-Reverse Stand-Off Voltage (V)
Forward Surge Current
tr=10sec
Peak Value
IPPM
Half Value IPPM
2
TJ=25C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of IPPM
10/1000sec. Waveform
as defined by R.E.A
td
TJ=TJ MAX
8.3 Single Half Sine-Wave
(JEDEC Method)
Undirectional Only
Uni-Directional
Bi-Directional
TJ=25C
f=1.0MHZ
Vsig=50mVp-p
VR, Measured at
Stand-Off
Voltage, VWM
Non-repetitive pulse
waveform shown in
Fig.3 T
A
= 25C
Uni-Directional
Bi-Directional
RoHS
Silicon Avalanche Diodes
257
w w w . l i t t e l f u s e . c o m
SMAJ Series
400W Surface Mount Transient Voltage Supressors
DO-214AC (SMA)
0.177 (4.50)
0.157(3.99)
0.110 (2.79)
0.100 (2.54)
0.065 (1.65)
0.049 (1.25)
0.012 (0.305)
0.006 (0.152)
0.060 (1.52)
0.030 (0.76)
0.208 (5.28)
0.194 (4.93)
0.090 (2.29)
0.078 (1.98)
0.008 (0.203) MAX
Dimensions in inches and (millimeters)
Cathode Band
RoHS
Package Outline Dimensions and Pad Layouts
6
SILICON DIODE
ARRA
YS
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