Features
Applications
■ RoHS compliant*
■ IEC 61000-4-2 ESD (Min. Level 4)
■ Surface Mount SMA package
■ IEC 61000-4-4 EFT
■ Standoff Voltage: 5.0 to 495 volts
■ IEC 61000-4-5 Surge
■ Power Dissipation: 400 watts
■ UL Recognized
SMAJ Transient Voltage Suppressor Diode Series
General Information
Additional Information
The markets of portable communications, computing and video equipment are challenging
the semiconductor industry to develop increasingly smaller electronic components.
Click these links for more information:
Bourns offers Transient Voltage Suppressor Diodes for surge and ESD protection
applications, in compact chip package DO-214AC (SMA) size format. The Transient
Voltage Suppressor series offers a choice of Working Peak Reverse Voltage from 5 V up
to 495 V and Breakdown Voltage up to 550 V. Typical fast response times are less than
1.0 picoseconds for unidirectional devices and less than 5.0 picoseconds for bidirectional
devices from 0 V to Minimum Breakdown Voltage.
PRODUCT TECHNICAL INVENTORY SAMPLES
SELECTOR LIBRARY
CONTACT
Agency Recognition
Description
Bourns® Chip Diodes conform to JEDEC standards, are easy to handle with standard pick
and place equipment and the flat configuration minimizes roll away.
UL
File Number: E153537
Electrical Characteristics (@ TA = 25 °C Unless Otherwise Noted)
Parameter
Symbol
Value
Unit
Minimum Peak Pulse Power Dissipation (TP = 1 ms) (Note 1,2)
PPK
400
Watts
Peak Forward Surge Current
8.3 ms Single Half Sine Wave Superimposed on Rated Load
(JEDEC Method) (Note 3)
IFSM
40
Amps
PM(AV)
1.0
Watts
VF
3.5
5.0
Volts
TJ
-55 to +150
°C
TSTG
-55 to +150
°C
Steady State Power Dissipation @ TL = 75 °C
Maximum Instantaneous Forward Voltage @ IPP = 35 A
(For Unidirectional Units Only)
SMAJ5.0A ~ SMAJ90A
SMAJ100A ~ SMAJ495A
Operating Temperature Range
Storage Temperature Range
1.
2.
3.
Non-repetitive current pulse, per Pulse Waveform graph and derated above TA = 25 °C per Pulse Derating Curve.
Thermal Resistance Junction to Lead.
8.3 ms Single Half-Sine Wave duty cycle = 4 pulses maximum per minute (unidirectional units only).
How to Order
SMAJ 5.0 CA - H
Asia-Pacific:
Tel: +886-2 2562-4117
Email: asiacus@bourns.com
EMEA:
Tel: +36 88 885 877
Email: eurocus@bourns.com
The Americas:
Tel: +1-951 781-5500
Email: americus@bourns.com
www.bourns.com
Package
SMAJ = SMA/DO-214AC
Working Peak Reverse Voltage
5.0 = 5.0 VRWM (Volts)
Suffix
A = 5 % Tolerance Unidirectional Device
CA = 5 % Tolerance Bidirectional Device
Reel
(blank) = 13 inch reel
-H = 7 inch reel
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
*RoHS Directive 2015/863, Mar 31, 2015 and Annex.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SMAJ Transient Voltage Suppressor Diode Series
Electrical Characteristics (@ TA = 25 °C Unless Otherwise Noted)
Unidirectional
Device
Part No.
Marking
Bidirectional Device
Part No.
Breakdown Voltage
VBR (Volts)
Marking Min.
Max.
SMAJ5.0A
HE
SMAJ5.0CA
TE
6.40 7.00
SMAJ6.0A
HG
SMAJ6.0CA
TG
6.67 7.37
SMAJ6.5A
HK
SMAJ6.5CA
TK
7.22 7.98
SMAJ7.0A
HM
SMAJ7.0CA
TM
7.78 8.60
SMAJ7.5A
HP
SMAJ7.5CA
TP
8.33 9.21
SMAJ8.0A
HR
SMAJ8.0CA
TR
8.89 9.83
SMAJ8.5A
HT
SMAJ8.5CA
TT
9.44 10.4
SMAJ9.0A
HV
SMAJ9.0CA
TV
10.0
11.1
SMAJ10A
HX
SMAJ10CA
TX
11.1
12.3
SMAJ11A
HZ
SMAJ11CA
TZ
12.2 13.5
SMAJ12A
IE
SMAJ12CA
UE
13.3 14.7
SMAJ13A
IG
SMAJ13CA
UG
14.4 15.9
SMAJ14A
IK
SMAJ14CA
UK
15.6 17.2
SMAJ15A
IM
SMAJ15CA
UM
16.7 18.5
SMAJ16A
IP
SMAJ16CA
UP
17.8 19.7
SMAJ17A
IR
SMAJ17CA
UR
18.9 20.9
SMAJ18A
IT
SMAJ18CA
UT
20.0 22.1
SMAJ20A
IV
SMAJ20CA
UV
22.2 24.5
SMAJ22A
IX
SMAJ22CA
UX
24.4 26.9
SMAJ24A
IZ
SMAJ24CA
UZ
26.7 29.5
SMAJ26A
JE
SMAJ26CA
VE
28.9 31.9
SMAJ28A
JG
SMAJ28CA
VG
31.1 34.4
SMAJ30A
JK
SMAJ30CA
VK
33.3 36.8
SMAJ33A
JM
SMAJ33CA
VM
36.7 40.6
SMAJ36A
JP
SMAJ36CA
VP
40
44.2
SMAJ40A
JR
SMAJ40CA
VR
44.4 49.1
SMAJ43A
JT
SMAJ43CA
VT
47.8 52.8
SMAJ45A
JV
SMAJ45CA
VV
50
55.3
SMAJ48A
JX
SMAJ48CA
VX
53.3 58.9
SMAJ51A
JZ
SMAJ51CA
VZ
56.7 62.7
SMAJ54A
RE
SMAJ54CA
WE
60
66.3
SMAJ58A
RG
SMAJ58CA
WG
64.4 71.2
SMAJ60A
RK
SMAJ60CA
WK
66.7 73.7
SMAJ64A
RM
SMAJ64CA
WM
71.1 78.6
SMAJ70A
RP
SMAJ70CA
WP
77.8 86.0
SMAJ75A
RR
SMAJ75CA
WR
83.3 92.1
SMAJ78A
RT
SMAJ78CA
WT
86.7 95.8
SMAJ85A
RV
SMAJ85CA
WV
94.4
104
SMAJ90A
RX
SMAJ90CA
WX
100
111
SMAJ100A
RZ
SMAJ100CA
WZ
111
123
SMAJ110A
SE
SMAJ110CA
XE
122
135
SMAJ120A
SG
SMAJ120CA
XG
133
147
SMAJ130A
SK
SMAJ130CA
XK
144
159
SMAJ150A
SM
SMAJ150CA
XM
167
185
SMAJ160A
SP
SMAJ160CA
XP
178
197
SMAJ170A
SR
SMAJ170CA
XR
189
209
SMAJ180A
ST
SMAJ180CA
XT
201
222
SMAJ200A
SV
SMAJ200CA
XV
224
247
SMAJ220A
SX
SMAJ220CA
XX
246
272
SMAJ250A
SZ
SMAJ250CA
XZ
279
309
SMAJ300A
FE
SMAJ300CA
GE
335
371
SMAJ350A
FG
SMAJ350CA
GG
391
432
SMAJ400A
FK
SMAJ400CA
GK
447
494
SMAJ434A
434U SMAJ434CA
434D
485
535
SMAJ440A
FM
SMAJ440CA
GM
492
543
SMAJ495A
495U SMAJ495CA
495D
522
578
Notes: 1. Suffix ‘A’ denotes a 5 % tolerance unidirectional device.
2. Suffix ‘CA’ denotes a 5 % tolerance bidirectional device.
@ IT
(mA)
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
Maximum
Reverse
Leakage
@ VRWM
VRWM
(V)
IR
(μA)
Maximum
Clamping
Voltage
@ Ipp
Maximum
Peak
Pulse
Current
(10/1000 μs)
(10/1000 μs)
Vc
(V)
Ipp
(A)
Maximum
Clamping
Voltage
@ Ipp
Maximum
Peak
Pulse
Current
(8/20 μs)
(8/20 μs)
Vc
(V)
Ipp
(A)
5.0
800
9.2
43.5
12.0
217.5
6.0
800
10.3
38.8
13.4
194.0
6.5
500
11.2
35.7
14.6
178.5
7.0
200
12.0
33.3
15.6
166.5
7.5
100
12.9
31.0
16.8
155.0
8.0
50
13.6
29.4
17.7
147.0
8.5
20
14.4
27.8
18.7
139.0
9.0
10
15.4
26.0
20.0
130.0
10
5
17.0
23.5
22.1
117.5
11
1.0
18.2
22.0
23.7
110.0
12
1.0
19.9
20.1
25.9
100.5
13
1.0
21.5
18.6
28.0
93.0
14
1.0
23.2
17.2
30.2
86.0
15
1.0
24.4
16.4
31.7
82.0
16
1.0
26.0
15.4
33.8
77.0
17
1.0
27.6
14.5
35.9
72.5
18
1.0
29.2
13.7
38.0
68.5
20
1.0
32.4
12.3
42.1
61.5
22
1.0
35.5
11.3
46.2
56.5
24
1.0
38.9
10.3
50.6
51.5
26
1.0
42.1
9.5
54.7
47.5
28
1.0
45.4
8.8
59.0
44.0
30
1.0
48.4
8.3
62.9
41.5
7.5
69.3
37.5
33
1.0
53.3
36
1.0
58.1
6.9
75.5
34.5
40
1.0
64.5
6.2
83.9
31.0
43
1.0
69.4
5.8
90.2
29.0
45
1.0
72.7
5.5
94.5
27.5
48
1.0
77.4
5.2
100.6
26.0
51
1.0
82.4
4.9
107.1
24.5
54
1.0
87.1
4.6
113.2
23.0
58
1.0
93.6
4.3
121.7
21.5
60
1.0
96.8
4.1
125.8
20.5
64
1.0
103
3.9
133.9
19.5
70
1.0
113
3.5
146.9
17.5
75
1.0
121
3.3
157.3
16.5
78
1.0
126
3.2
163.8
16.0
85
1.0
137
2.9
178.1
14.5
90
1.0
146
2.7
189.8
13.5
100
1.0
162
2.5
210.6
12.5
110
1.0
177
2.3
230.1
11.5
120
1.0
193
2.1
250.9
10.5
130
1.0
209
1.9
271.7
9.5
150
1.0
243
1.6
315.9
8.0
160
1.0
259
1.5
336.7
7.5
170
1.0
275
1.5
357.5
7.5
180
1.0
292
1.4
379.6
7.0
200
1.0
324
1.2
421.2
6.0
220
1.0
356
1.1
462.8
5.5
250
1.0
405
1.0
526.5
5.0
300
1.0
486
0.8
631.8
4.0
350
1.0
567
0.7
737.1
3.5
400
1.0
648
0.6
842.4
3.0
434
1.0
698
0.6
907.4
2.9
440
1.0
713
0.6
926.9
3.0
495
1.0
760
0.5
988.0
2.6
3. For bidirectional devices with a VR of 10 volts or less, the IR limit is double.
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SMAJ Transient Voltage Suppressor Diode Series
Product Dimensions
Recommended Footprint
A
A
B
C
B
C
G
Dimension
A (Max.)
F
H
D
B (Min.)
E
C (Min.)
Dimension
A
B
C
D
E
F
G
H
SMA (DO-214AC)
3.99 - 4.50
(0.157 - 0.177)
2.54 - 2.79
(0.100 - 0.110)
1.25 - 1.65
(0.049 - 0.065)
0.15 - 0.31
(0.006 - 0.012)
4.93 - 5.28
(0.194 - 0.208)
0.203
MAX.
(0.008)
1.98 - 2.29
(0.078 - 0.090)
0.76 - 1.52
(0.030 - 0.060)
DIMENSIONS:
SMA (DO-214AC)
2.70
(0.106)
2.10
(0.083)
1.27
(0.050)
DIMENSIONS:
MM
(INCHES)
Physical Specifications
Case ...........................................Molded plastic per UL Class 94V-0
Polarity....................... Cathode band indicates unidirectional device
No cathode band indicates bidirectional device
Weight ...........................................................................0.064 grams
Typical Part Marking
MANUFACTURER’S
TRADEMARK
YWW
XXXX
DATE CODE:
Y = LAST
DIGIT OF
YEAR
WW = WEEK
NUMBER
MM
(INCHES)
DEVICE ID
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SMAJ Transient Voltage Suppressor Diode Series
Rating & Characteristic Curves
Pulse Derating Curve
Maximum Non-Repetitive Surge Current
60
Peak Forward Surge Current (Amps)
Peak Pulse Derating in Percent of
Peak Power or Current
100
75
50
25
10 x 1000 Waveform as Defined
by R.E.A.
50
40
30
20
0
0
0
25
75
50
100
125
150
175
Pulse Width 8.3 ms
Single Half Sine-Wave
10
200
1
2
5
10
20
50
100
Number of Cycles at 60 Hz
Ambient Temperature (°C)
Pulse Waveform
Typical Junction Capacitance
10000
TR=10 µs
Half value=
CJ - Junction Capacitance (pF)
IP, Peak Pulse Current (%)
Bidirectional
v-0v
Peak value (IRSM)
100
IRSM
2
Pulse width (TP)
is defined as that point
where the peak current
decays to 50 % of IPSM.
50
10 x 1000 waveform
as defined by R.E.A.
TA=25 °C
TP
1000
Unidirectional
@ VR
100
TJ = 25 °C
f = 1.0 MHz
Vsig = 50 mVp-p
10
Bidirectional
@ VR
1
0
0
1.0
2.0
3.0
1
4.0
10
100
1000
VBR - Reverse Breakdown Voltage (V)
T, Time (ms)
Pulse Rating Curve
Steady State Power Derating Curve
1.0
1.0
TA = 25 °C
Non-repetitive
Pulse Waveform
Shown in Pulse Waveform Graph
0.1
0.1 µs
1.0 µs
10 µs
100 µs
Td, Pulse Width (Seconds)
1.0 ms
10 ms
RM(AV) Steady State Power Dissipation (W)
10
PPPM - Peak Pulse Power (kW)
Unidirectional
v-0v
0.8
0.6
0.4
0.2
60 Hz Resistive or
Inductive Load
0.0
0
25
50
75
100
125
150
175
200
TL, Lead Temperature (°C)
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
SMAJ Transient Voltage Suppressor Diode Series
Packaging Information
The product will be dispensed in tape and reel format (see diagram below).
P
0
P
1
d
T
E
Index Hole
120 °
F
D2
W
B
D1 D
P
Trailer
End
A
Unidirectional
Product
Orientation
.......
.......
C
Device
.......
.......
Leader
.......
.......
.......
.......
10 pitches (min.)
W1
Start
DIMENSIONS:
10 pitches (min.)
Devices are packed in accordance with EIA 481
standard specifications shown here.
Direction of Feed
Item
MM
(INCHES)
Symbol
SMA (DO-214AC)
7 Inch Reel
Carrier Width
A
Carrier Length
B
Carrier Depth
C
Sprocket Hole
d
Reel Outside Diameter
D
Reel Inner Diameter
D1
Feed Hole Diameter
D2
Sprocket Hole Position
E
Punch Hole Position
F
Punch Hole Pitch
P
Sprocket Hole Pitch
P0
Embossment Center
P1
Overall Tape Thickness
T
Tape Width
W
Reel Width
W1
Quantity per Reel
--
13 Inch Reel
2.90 ± 0.20
(0.114 ± 0.008)
5.50 ± 0.20
(0.217 ± 0.008)
2.26 ± 0.20
(0.089 ± 0.008)
1.50 ± 0.10
(0.061 ± 0.004)
178
(7.008)
330
(12.992)
50.0
MIN.
(1.969)
13.0 ± 0.20
(0.512 ± 0.008)
1.75 ± 0.10
(0.069 ± 0.004)
5.50 ± 0.05
(0.217 ± 0.002)
4.00 ± 0.10
(0.157 ± 0.004)
4.00 ± 0.10
(0.157 ± 0.004)
2.00 ± 0.05
(0.079 ± 0.002)
0.30 ± 0.10
(0.012 ± 0.004)
12.00 ± 0.30
(0.472 ± 0.012)
18.4
MAX.
(0.724)
1,000
5,000
REV. 09/20
Specifications are subject to change without notice.
Users should verify actual device performance in their specific applications.
The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.
Legal Disclaimer Notice
This legal disclaimer applies to purchasers and users of Bourns® products manufactured by or on behalf of Bourns, Inc. and
P[ZHɉSPH[LZJVSSLJ[P]LS`¸)V\YUZ¹
Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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