SMAJ5.0 THRU SMAJ170CA
SURFACE MOUNT T
RANS
Z
ORB
™ TRANSIENT VOLTAGE SUPPRESSOR
Stand-off Voltage -
5.0 to 170 Volts
Peak Pulse Power -
300 Watts
FEATURES
DO-214AC
0.065 (1.65)
0.049 (1.25)
0.110 (2.79)
0.100 (2.54)
0.177 (4.50)
0.157 (3.99)
0.012 (0.305)
0.006 (0.152)
0.090 (2.29)
0.078 (1.98)
♦
Optimized for LAN protection applications
♦
Ideal for ESD protection of data lines in accordance
with IEC 1000-4-2 (IEC801-2)
♦
Ideal for EFT protection of data lines in accordance with
IEC1000-4-4 (IEC801-4)
♦
Plastic package has Underwriters Laboratory
Flammability Classification 94V-0
♦
Glass passivated junction
♦
Excellent clamping capability
♦
Low incremental surge resistance
♦
Fast response time: typically less than 1.0ps from 0 Volts
to V
(BR)
min.
♦
300W peak pulse power capability with a 10/1000µs
waveform, repetition rate (duty cycle): 0.01%
♦
High temperature soldering guaranteed:
250°C/10 seconds at terminals
0.060 (1.52)
0.030 (0.76)
0.008 (0.203) MAX.
0.208 (5.28)
0.194 (4.93)
MECHANICAL DATA
Case:
JEDEC DO-214AC molded plastic body over
passivated chip
Terminals:
Solder plated, solderable per MIL-STD-750,
Method 2026
Polarity:
For uni-directional types the color band denotes
the cathode, which is postitive with respect to the anode
under normal TVS operation
Mounting Position:
Any
Weight:
0.002 ounces, 0.064 gram
Dimensions in inches and (millimeters)
DEVICES FOR BIDIRECTIONAL APPLICATIONS
For bi-directional use suffix C or CA for types SMAJ5.0 thru SMAJ170 (e.g. SMAJ5.0C, SMAJ170CA)
Electrical characteristics apply in both directions.
MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
SYMBOLS
VALUE
UNITS
Peak pulse power dissipation with a 10/1000µs waveform
(NOTE 1, 2, FIG.1)
Peak pulse current with a 10/1000µs waveform
(NOTE 1)
Peak forward surge current 8.3ms single half sine-wave superimposed
on rated load (JEDEC Method)
(NOTES 2, 3)
- unidirectional only
Maximum instantaneous forward voltage at 25A
(NOTE 3)
Operating junction and storage temperature range
NOTES:
(1) Non-repetitive current pulse, per Fig.3 and derated above T
A
=25°C per Fig. 2
(2) Mounted on 0.2 x 0.2” (5.0 x 5.0mm) copper pads to each terminal
(3) Measured on 8.3ms single half sine-wave. For uni-directional devices only.
P
PM
I
PPM
I
FSM
V
F
T
J
, T
STG
Minimum 300
SEE TABLE 1
Watts
Amps
Amps
Volts
°C
40.0
3.5
-55 to +150
1/20/99
ELECTRICAL CHARACTERISTICS (T
A
=25°C unless otherwise noted) TABLE 1
Device
Marking Code
Device
SMAJ5.0
SMAJ5.0A
SMAJ6.0
SMAJ6.0A
SMAJ6.5
SMAJ6.5A
SMAJ7.0
SMAJ7.0A
SMAJ7.5
SMAJ7.5A
SMAJ8.0
SMAJ8.0A
SMAJ8.5
SMAJ8.5A
SMAJ9.0
SMA J9.0A
SMAJ10
SMAJ10A
SMAJ11
SMAJ11A
SMAJ12
SMAJ12A
SMAJ13
SMAJ13A
SMAJ14
SMAJ14A
SMAJ15
SMAJ15A
SMAJ16
SMAJ16A
SMAJ17
SMAJ17A
SMAJ18
SMAJ18A
SMAJ20
SMAJ20A
SMAJ22
SMAJ22A
SMAJ24
SMAJ24A
SMAJ26
SMAJ26A
SMAJ28
SMAJ28A
SMAJ30
SMAJ30A
SMAJ33
SMAJ33A
SMAJ36
SMAJ36A
SMAJ40
SMAJ40A
SMAJ43
SMAJ43A
SMAJ45
SMAJ45A
SMAJ48
SMAJ48A
SMAJ51
SMAJ51A
UNI
AD
AE
AF
AG
AH
AK
AL
AM
AN
AP
AQ
AR
AS
AT
AU
AV
AW
AX
AY
AZ
BD
BE
BF
BG
BH
BK
BL
BM
BN
BP
BQ
BR
BS
BT
BU
BV
BW
BX
BY
BZ
CD
CE
CF
CG
CH
CK
CL
CM
CN
CP
CQ
CR
CS
CT
CU
CV
CW
CX
CY
CZ
BI
WD
WE
WF
WG
WH
WK
WL
WM
WN
WP
WQ
WR
WS
WT
WU
WV
WW
WX
WY
WZ
XD
XE
XF
XG
XH
XK
XL
XM
XN
XP
XQ
XR
XS
XT
XU
XV
XW
XX
XY
XZ
YD
YE
YF
YG
YH
YK
YL
YM
YN
YP
YQ
YR
YS
YT
YU
YV
YW
YX
YY
YZ
Breakdown Voltage
V
(BR)
(Volts) at I
T
(NOTE 1)
Min.
Max.
Test
Current
I
T
(mA)
10
10
10
10
10
10
10
10
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
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Working Peak
Reverse Voltage
V
WM
(Volts)
5.0
5.0
6.0
6.0
6.5
6.5
7.0
7.0
7.5
7.5
8.0
8.0
8.5
8.5
9.0
9.0
10.0
10.0
11.0
11.0
12.0
12.0
13.0
13.0
14.0
14.0
15.0
15.0
16.0
16.0
17.0
17.0
18.0
18.0
20.0
20.0
22.0
22.0
24.0
24.0
26.0
26.0
28.0
28.0
30.0
30.0
33.0
33.0
36.0
36.0
40.0
40.0
43.0
43.0
45.0
45
48
48
51
51
Maximum
Reverse
Leakage
a V
WM
(NOTE 3)
I
D (µA)
800
800
800
800
500
500
200
200
100
100
50.0
50.0
10.0
10.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
Maximum
Peak Pulse
Surge Current I
PPM
(NOTE 2)
(Amps)
31.3
32.6
26.3
29.1
24.4
26.8
22.6
25.0
21.0
23.3
20.0
22.1
18.9
20.8
17.8
19.5
16.0
17.6
14.9
16.5
13.6
15.1
12.6
14.0
11.6
12.9
11.2
12.3
10.4
11.5
9.8
10.9
9.3
10.3
8.4
9.3
7.6
8.5
7.0
7.7
6.4
7.1
6.0
6.6
5.6
6.2
5.1
5.6
4.7
5.2
4.2
4.7
3.9
4.3
80.3
72.7
85.5
77.4
91.1
82.4
Maximum Clamping
Voltage at I
PPM
Vc (Volts)
9.6
9.2
11.4
10.3
12.3
11.2
13.3
12.0
14.3
12.9
15.0
13.6
15.9
14.4
16.9
15.4
18.8
17.0
20.1
18.2
22.0
19.9
23.8
21.5
25.8
23.2
26.9
24.4
28.8
26.0
30.5
27.6
32.2
29.2
35.8
32.4
39.4
35.5
43.0
38.9
46.6
42.1
50.0
45.4
53.5
48.4
59.0
53.3
64.3
58.1
71.4
64.5
76.7
69.4
3.7
4.1
3.5
3.9
3.3
3.6
6.4
6.4
6.67
6.67
7.22
7.22
7.78
7.78
8.33
8.33
8.89
8.89
9.44
9.44
10.0
10.0
11.1
11.1
12.2
12.2
13.3
13.3
14.4
14.4
15.6
15.6
16.7
16.7
17.8
17.8
18.9
18.9
20.0
20.0
22.2
22.2
24.4
24.4
26.7
26.7
28.9
28.9
31.1
31.1
33.3
33.3
36.7
36.7
40.0
40.0
44.4
44.4
47.8
47.8
50.0
50.0
53.3
53.3
56.7
56.7
7.82
7.07
8.15
7.37
8.82
7.98
9.51
8.6
10.3
9.21
10.9
9.83
11.5
10.4
12.2
11.1
13.6
12.3
14.9
13.5
16.3
14.7
17.6
15.9
19.1
17.2
20.4
18.5
21.8
19.7
23.1
20.9
24.4
22.1
27.1
24.5
29.8
26.9
32.6
29.5
35.3
31.9
38.0
34.4
40.7
36.8
44.9
40.6
48.9
44.2
54.3
49.1
58.4
52.8
61.1
55.3
65.1
58.9
69.3
62.7
ELECTRICAL CHARACTERISTICS (T
A
=25°C unless otherwise noted) TABLE 1 (Cont’d)
Device
Marking Code
Device
SMAJ54
SMAJ54A
SMAJ58
SMAJ58A
SMAJ60
SMAJ60A
SMAJ64
SMAJ64A
SMAJ70
SMAJ70A
SMAJ75
SMAJ75A
SMAJ78
SMAJ78A
SMAJ85
SMAJ85A
SMAJ90
SMAJ90A
SMAJ100
SMAJ100A
SMAJ110
SMAJ110A
SMAJ120
SMAJ120A
SMAJ130
SMAJ130A
SMAJ150
SMAJ150A
SMAJ160
SMAJ160A
SMAJ170
SMAJ170A
UNI
RD
RE
RF
RG
RH
RK
RL
RM
RN
RP
RQ
RR
RS
RT
RU
RV
RW
RX
RY
RZ
SD
SE
SF
SG
SH
SK
SL
SM
SN
SP
SQ
SR
BI
ZD
ZE
ZF
ZG
ZH
ZK
ZL
ZM
ZN
ZP
ZQ
ZR
ZS
ZT
ZU
ZV
ZW
ZX
ZY
ZZ
VD
VE
VF
VG
VH
VK
VL
VM
VN
VP
VQ
VR
Breakdown Voltage
V
(BR)
(Volts) at I
T
(NOTE 1)
Min.
Max.
Test
Current
I
T
(mA)
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
1.0
Working Peak
Reverse Voltage
V
WM
(Volts)
54
54
58
58
60
60
64
64
70
70
75
75
78
78
85
85
90
90
100
100
110
110
120
120
130
130
150
150
160
160
170
170
Maximum
Reverse
Leakage
a V
WM
(NOTE 3)
I
D (µA)
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
Maximum
Peak Pulse
Surge Current I
PPM
(NOTE 2)
(Amps)
96.3
87.1
103
93.6
107
96.8
114
103
125
113
134
121
139
126
151
137
160
146
179
162
196
177
214
193
231
209
268
243
287
259
304
275
Maximum Clamping
Voltage at I
PPM
Vc (Volts)
3.1
3.4
2.9
3.2
2.8
3.1
2.6
2.9
2.4
2.7
2.2
2.5
2.2
2.4
2
2.2
1.9
2.1
1.7
1.9
1.5
1.7
1.4
1.6
1.3
1.4
1.1
1.2
1.0
1.2
0.99
1.09
60.0
60.0
64.4
64.4
66.7
66.7
71.1
71.1
77.8
77.8
83.3
83.3
86.7
86.7
94.4
94.4
100
100
111
111
122
122
133
133
144
144
167
167
178
178
189
189
73.3
66.3
78.7
71.2
81.5
73.7
86.4
78.6
95.1
86
102
92.1
106
95.8
115
104
122
111
136
123
149
135
163
147
176
159
204
185
218
197
231
209
NOTES:
(1) V
(BR)
measured after I
T
applied for 300µs square wave pulse or equivalent
(2) Surge current waveform per Fig. 3 and derate per Fig. 2
(3) For bi-directional types having V
WM
of 10 Volts and less, the I
D
limit is doubled
(4) For the bi-directional SMAJ5.0CA, the maximum V
(BR)
is 7.25V.
(5) All terms and symbols are consistent with ANSI/IEEE C62.35
APPLICATION NOTES
RECOMMENDED PAD LAYOUT
The pad dimensions should be 0.010” (2.5mm) longer than the contact size in the lead
axis. This allows a solder fillet to form, see figure below. Contact factory for soldering
methods.
This device is designed specifically for transient voltage suppression from
threats generated by ESD for board level load switching components.
The wide leads assure a large surface contact for good heat dissipation,
and a low resistance path for surge current flow to ground.
This series is designed to optimize board space and for use with surface
mount technology automated assembly equipment.
They can be easily mounted on printed circuit boards and ceramic
substrates to protect sensitive components from transient voltage
damage.
MODIFIED J-BEND
0.060 MIN
(1.52 MIN)
0.094 MAX
(2.38 MAX)
0.050 MIN
(1.27 MIN)
Dimensions in inches and (millimeters)
(5.58)
0.220 REF
MAXIMUM RATINGS AND CHARACTERISTIC CURVES SMAJ5.0 THRU SMAJ170CA
FIG. 1 - PEAK PULSE POWER RATING CURVE
P
PPM
, PEAK PULSE POWER, kW
NON-REPETITIVE
PULSE WAVEFORM
SHOWN in FIG. 3
T
A
=25°C
PEAK PULSE POWER (Ppp) or CURRENT (
IPPM
)
DERATING IN PERCENTAGE, %
100
FIG. 2 - PULSE DERATING CURVE
100
10
75
1.0
50
0.2 x 0.2” (5.0 x 5.0mm)
COPPER PAD AREAS
25
0.2 x 0.2” (5.0 x 5.0mm)
COPPER PAD AREAS
0.1
0.1ms
1.0ms
10ms
100ms
1.0ms
10ms
td, PULSE WIDTH, sec.
0
0
25
50
75
100
125
150
175
T
A
, AMBIENT TEMPERATURE, °C
FIG. 4 - TYPICAL JUNCTION CAPACITANCE
FIG. 3 - PULSE WAVEFORM
10,000
T
J
=25°C
f=1.0 MH
Z
Vsig=50mVp-p
Measured at
Stand-off
Voltage, V
WM
150
I
PPM,
PEAK PULSE CURRENT, %
C
J,
JUNCTION CAPACITANCE, pF
PULSE WIDTH (td) is DEFINED
as the POINT WHERE the PEAK
CURRENT DECAYS
to 50% of I
PPM
tr=10µsec.
100
PEAK VALUE
I
PPM
HALF VALUE - I
PPM
2
1,000
UNI-DIRECTIONAL
50
10/1000µsec. WAVEFORM
as DEFINED by R.E.A.
100
BI-DIRECTIONAL
0
td
0
1.0
2.0
t, TIME, ms
3.0
4.0
10
1
10
100
200
V
(BR)
, BREAKDOWN VOLTAGE, VOLTS
FIG. 5- Typical Response to 8KV Positive Going ESD Pulse
Per IEC1000 - 4-2 (IEC801-2)
I
FSM
, PEAK FORWARD SURGE CURRENT,
AMPERES
FIG. 6 - MAXIMUM NON-REPETITIVE FORWARD SURGE
CURRENT UNIDIRECTIONAL ONLY
LET THROUGH VOLTAGE, VOLTS
105
84
63
42
21
0V
-21
-42
-63
-84
-105
0
10
20
30
40
50
60
70
Device Used:
SMAJ15C
50
T
J
=T
J
max.
8.3ms SINGLE HALF SINE-WAVE
(JEDEC Method)
40
30
20
10
0
1
10
NUMBER OF CYCLES AT 60 H
Z
100
t, TIME, nsec
微控制器 MCU
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
