Features
■ Surface Mount SMB package
■ Standoff Voltage: 12 to 58 volts
■ Power Dissipation: 600 watts
■ RoHS compliant*
■ AEC-Q101 compliant**
Applications
■ Protection of power buses
■ Protection of I/O interfaces
■ Overvoltage transient protection
■ Telecom, computer, industrial and
consumer electronics applications
Electrical Characteristics (@ TA = 25 °C Unless Otherwise Noted)
SMBJ-Q Transient Voltage Suppressor Diode Series
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
**”Q” part number suffix indicates AEC-Q101 compliance.
Parameter Symbol Value Unit
Minimum Peak Pulse Power Dissipation (TP = 1 ms) (Note 1,2) PPK 600 Watts
Peak Forward Surge Current
8.3 ms Single Half Sine Wave Superimposed on Rated Load
(JEDEC Method) (Note 3)
IFSM 100 Amps
Operating Temperature Range TJ-55 to +150 °C
Storage Temperature Range TSTG -55 to +150 °C
1. Non-repetitive current pulse, per Pulse Waveform graph and derated above TA = 25 °C per Pulse Derating Curve.
2. Mounted on 5.0 mm2 (0.03 mm thick) copper pads to each terminal.
3. 8.3 ms Single Half-Sine Wave duty cycle = 4 pulses maximum per minute (unidirectional units only).
General Information
Bourns offers Transient Voltage Suppressor Diodes for surge and ESD protection applications, in compact chip package DO-214AA (SMB)
size format. The Transient Voltage Suppressor series offers a choice of Working Peak Reverse Voltage from 12 V up to 58 V. Typical fast
response times are less than 1.0 picosecond from 0 V to Breakdown Voltage.
Bourns®
minimizes roll away.
*RoHS COMPLIANT
Tel: +886-2 2562-4117 • Email: asiacus@bourns.com
EMEA: Tel: +36 88 520 390 • Email: eurocus@bourns.com
The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com
www.bourns.com
WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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
SMBJ-Q Transient Voltage Suppressor Diode Series
Electrical Characteristics (@ TA = 25 °C Unless Otherwise Noted)
Unidirectional Device Bidirectional Device Breakdown Voltage
VBR (Volts)
Working
Peak
Reverse
Voltage
Maximum
Reverse
Leakage
@ VRWM
Maximum
Reverse
Voltage
@ IRSM
Maximum
Reverse
Surge
Current
Part No. Marking Part No. Marking Min. Max. @ IT (mA) VRWM (V) IR (μA) VRSM (V) IRSM (A)
SMBJ12A-Q LEQ SMBJ12CA-Q BEQ 13.3 14.7 1.0 12 1.0 19.9 30.2
SMBJ13A-Q LGQ SMBJ13CA-Q BGQ 14.4 15.9 1.0 13 1.0 21.5 28.0
SMBJ14A-Q LKQ SMBJ14CA-Q BKQ 15.6 17.2 1.0 14 1.0 23.2 25.9
SMBJ15A-Q LMQ SMBJ15CA-Q BMQ 16.7 18.5 1.0 15 1.0 24.4 24.6
SMBJ16A-Q LPQ SMBJ16CA-Q BPQ 17.8 19.7 1.0 16 1.0 26.0 23.1
SMBJ17A-Q LRQ SMBJ17CA-Q BRQ 18.9 20.9 1.0 17 1.0 27.6 21.8
SMBJ18A-Q LTQ SMBJ18CA-Q BTQ 20.0 22.1 1.0 18 1.0 29.2 20.6
SMBJ20A-Q LVQ SMBJ20CA-Q BVQ 22.2 24.5 1.0 20 1.0 32.4 18.6
SMBJ22A-Q LXQ SMBJ22CA-Q BXQ 24.4 26.9 1.0 22 1.0 35.5 16.9
SMBJ24A-Q LZQ SMBJ24CA-Q BZQ 26.7 29.5 1.0 24 1.0 38.9 15.5
SMBJ26A-Q MEQ SMBJ26CA-Q CEQ 28.9 31.9 1.0 26 1.0 42.1 14.3
SMBJ28A-Q MGQ SMBJ28CA-Q CGQ 31.1 34.4 1.0 28 1.0 45.4 13.3
SMBJ30A-Q MKQ SMBJ30CA-Q CKQ 33.3 36.8 1.0 30 1.0 48.4 12.4
SMBJ33A-Q MMQ SMBJ33CA-Q CMQ 36.7 40.6 1.0 33 1.0 53.3 11.3
SMBJ36A-Q MPQ SMBJ36CA-Q CPQ 40.0 44.2 1.0 36 1.0 58.1 10.4
SMBJ40A-Q MRQ SMBJ40CA-Q CRQ 44.4 49.1 1.0 40 1.0 64.5 9.3
SMBJ43A-Q MTQ SMBJ43CA-Q CTQ 47.8 52.8 1.0 43 1.0 69.4 8.7
SMBJ45A-Q MVQ SMBJ45CA-Q CVQ 50.0 55.3 1.0 45 1.0 72.7 8.3
SMBJ48A-Q MXQ SMBJ48CA-Q CXQ 53.3 58.9 1.0 48 1.0 77.4 7.8
SMBJ51A-Q MZQ SMBJ51CA-Q CZQ 56.7 62.7 1.0 51 1.0 82.4 7.3
SMBJ54A-Q NEQ SMBJ54CA-Q DEQ 60.0 66.3 1.0 54 1.0 87.1 6.9
SMBJ58A-Q NGQ SMBJ58CA-Q DGQ 64.4 71.2 1.0 58 1.0 93.6 6.5
Notes: 1.
2.
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.
100
50
0
01.0
2.0 3.0 4.0
T, Time (ms)
IP, Peak Pulse Current (%)
TA=25 °C
TP
TR=10 µs
Half value= IRSM
2
Peak value (IRSM)
Pulse width (TP)
is defined as that point
where the peak current
decays to 50 % of IPSM.
10 x 1000 waveform
as defined by R.E.A.
Peak Forward Surge Current (Amps)
120
80
100
60
40
20
0
12 5 10 20 50 100
Number of Cycles at 60 Hz
Pulse Width 8.3 ms
Single Half Sine-Wave
100
10
1.0
0.1
0.1 µs 1.0 µs 10 µs 10 ms
TP, Pulse Width
PP, Peak Power (KW)
100 µs 1.0 ms
TA = 25 °C
Non-repetitive
Pulse Waveform
Shown in Pulse Waveform Graph
5.0 mm Lead Areas
CJ - Junction Capacitance (pF)
10000
10
1
110 100 1000
VBR - Reverse Breakdown Voltage (V)
100
1000
TJ = 25 °C
f = 1.0 MHz
Vsig = 50 mVp-p
Unidirectional
@ VR
Bidirectional
@ VR
Bidirectional
v-0v
Unidirectional
v-0v
100
75
50
25
0
050
25 75 100 150125
Ambient Temperature (
Peak Pulse Power Derating in Percent of
Peak Power or Current
°C)
10 x 1000 Waveform as Defined
by R.E.A.
5.0
3.0
4.0
2.0
1.0
0.0
050
25 75 100 150125
TL - Lead Temperature (°C)
Steady State Power Dissipation (W)
SMBJ-Q Transient Voltage Suppressor Diode Series
Performance Graphs
Peak Pulse Power Derating Curve Maximum Non-Repetitive Surge Current
Pulse Waveform Typical Junction Capacitance
Pulse Rating Curve Steady State Power Derating Curve
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.
Product Dimensions
SMBJ-Q Transient Voltage Suppressor Diode Series
Recommended Footprint
Case ...........................................Molded plastic per UL Class 94V-0
Polarity....................... Cathode band indicates unidirectional device
No cathode band indicates bidirectional device
DIMENSIONS: MM
(INCHES)
B
G
F D
C
H
E
AA
C
B
Dimension SMB (DO-214AA)
A4.06 - 4.57
(0.160 - 0.180)
B3.30 - 3.94
(0.130 - 0.155)
C1.95 - 2.20
(0.077 - 0.087)
D0.15 - 0.31
(0.006 - 0.112)
E5.21 - 5.59
(0.205 - 0.220)
F 0.203 MAX.
(0.008)
G2.13 - 2.44
(0.080 - 0.103)
H0.76 - 1.52
(0.030 - 0.060)
DIMENSIONS: MM
(INCHES)
Dimension SMB (DO-214AA)
A (Max.) 2.69
(0.106)
B (Min.) 2.10
(0.083)
C (Min.) 1.27
(0.050)
How to Order
SMBJ 12 CA - Q
Package
SMBJ = SMB/DO-214AA
Working Peak Reverse Voltage
12 = 12 VRWM (Volts)
A = 5 % Tolerance Unidirectional Device
CA = 5 % Tolerance Bidirectional Device
Q = AEC-Q101 Compliant, 13-inch Reel
QH = AEC-Q101 Compliant, 7-inch Reel
Typical Part Marking
YWW
XXX
DATE CODE:
Y = LAST
DIGIT OF
YEAR
WW = WEEK
NUMBER
MANUFACTURER’S
TRADEMARK
DEVICE ID
Moisture Sensitivity Level ................................................................1
............................................................. 3B
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.
.......
.......
....... ..............
....... ..............
PA
F
ET
120 °
D2
DD
1
W1
C
Index Hole
P
0
P
1
W
B
10 pitches (min.)
Direction of Feed
10 pitches (min.)
End
Trailer Device Leader
Start
d
CDDFN5-0504N - TVS/Steering Diode Array
Packaging Information
The product will be dispensed in tape and reel format (see diagram below).
Devices are packed in accordance with EIA 481
DIMENSIONS: MM
(INCHES)
Item Symbol SMB (DO-214AA)
7-Inch Reel 13-Inch Reel
Carrier Width A 3.67 ± 0.20
(0.144 ± 0.008)
Carrier Length B 5.60 ± 0.20
(0.220 ± 0.008)
Carrier Depth C 2.57 ± 0.20
(0.101 ± 0.008)
Sprocket Hole d 1.50 ± 0.10
(0.059 ± 0.004)
Reel Outside Diameter D 178
(7.008)
330
(12.992)
Reel Inner Diameter D1 50.0
(1.969) MIN.
Feed Hole Diameter D2 13.0 ± 0.20
(0.512 ± 0.008)
Sprocket Hole Position E 1.75 ± 0.10
(0.069 ± 0.004)
Punch Hole Position F 5.50 ± 0.05
(0.217 ± 0.002)
Punch Hole Pitch P 8.00 ± 0.10
(0.315 ± 0.004)
Sprocket Hole Pitch P0 4.00 ± 0.10
(0.157 ± 0.004)
Embossment Center P1 2.00 ± 0.05
(0.079 ± 0.002)
Overall Tape Thickness T 0.30 ± 0.10
(0.012 ± 0.004)
Tape Width W 12.00 ± 0.30
(0.472 ± 0.012)
Reel Width W118.4
(0.724) MAX.
Quantity per Reel -- 500 3,000
REV. 11/18
SMBJ-Q Transient Voltage Suppressor Diode Series
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
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Unless otherwise expressly indicated in writing, Bourns® products and data sheets relating thereto are subject to change
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