SMAJ Series Datasheet by Littelfuse Inc.

Surface Mountr 4 Dun-hut
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: BA.10/21/20
Surface Mount – 400W > SMAJ series
TVS Diodes
Description
Agency Approvals
Agency Agency File Number
E230531
Features
Maximum Ratings and Thermal Characteristics
(TA=25OC unless otherwise noted)
Parameter Symbol Value Unit
Peak Pulse Power Dissipation at TA=25° by
10/1000us Waveform(Fig.2)(Note 1), (Note 2)
-Single Die Parts
PPPM 400 W
Peak Pulse Power Dissipation at TA=25° by
10/1000us Waveform(Fig.2)(Note 1), (Note
2)-Stacked Die Parts(Note 5)
PPPM 600 W
Power Dissipation on Infinite Heat Sink at
TL=50OCPD3.3 W
Peak Forward Surge Current, 8.3ms Single Half
Sine Wave (Note 3) IFSM 60 A
Maximum Instantaneous Forward Voltage at
25A for Unidirectional Only (Note 4) VF3.5/5.0 V
Operating Temperature Range TJ-65 to 150 °C
Storage Temperature Range TSTG -65 to 175 °C
Typical Thermal Resistance Junction to Lead RθJL 30 °C/W
Typical Thermal Resistance Junction to Ambient RθJA 120 °C/W
The SMAJ series is designed specifically to protect
sensitive electronic equipment from voltage transients
induced by lightning and other transient voltage events.
Applications
TVS devices are ideal for the protection of I/O Interfaces,
VCC bus and other vulnerable circuits used in Telecom,
Computer, Industrial and Consumer electronic applications.
• 400W Peak pulse power
capability at 10/1000µs
waveform, repetition rate
(duty cycle): 0.01%
• Excellent clamping
capability
• Typical IR less than 1μA
when VBR min>12V
• For surface mounted
applications to optimize
board space
• Low profile package
• Typical failure mode is
short from over-specified
voltage or current
• Whisker test is conducted
based on JEDEC
JESD201A per its table 4a
and 4c
• IEC-61000-4-2 ESD
30kV(Air), 30kV (Contact)
• ESD protection of data
lines in accordance with
IEC 61000-4-2
• EFT protection of data
lines in accordance with
IEC 61000-4-4
• Built-in strain relief
• Fast response time:
typically less than 1.0ps
from 0 Volts to VBR min
• Glass passivated junction
• Low inductance
• High temperature
to reflow soldering
guaranteed: 260°C/30sec
• VBR @ TJ= VBR@25°C
x (1+αT x (TJ - 25))
(αT:Temperature
Coefficient, typical value
is 0.1%)
• Plastic package is
flammability rated V-0 per
Underwriters Laboratories
• Meet MSL level1, per
J-STD-020, LF maximun
peak of 260°C
• Matte tin lead–free Plated
• Halogen free and RoHS
compliant
• Pb-free E3 means 2nd
level interconnect is
Pb-free and the terminal
finish material is tin(Sn)
(IPC/JEDEC J-STD-
609A.01)
SMAJ Series
Uni-directional Bi-directional
Functional Diagram
Bi-directional
Uni-directional
Cathode Anode
RoHS
Pb
e3
Datasheet
Additional Infomarion
Resources
Samples
Notes:
1. Non-repetitive current pulse, per Fig.4 and derated above TJ (initial) =25ºC per Fig. 3.
2. Mounted on 5.0x5.0mm copper pad to each terminal.
3. Measured on 8.3ms single half sine wave or equivalent square wave for unidirectional device only.
4. VF < 3.5V for single die parts and VF< 5.0V for stacked-die parts.
5. For stacked die component details, please refer to part numbers labeled by * in Electrical Characteristics.
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© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: BA.10/21/20
Surface Mount – 400W > SMAJ series
TVS Diodes
Electrical Characteristics (TA=25°C unless otherwise noted)
Part
Number
(Uni)
Part
Number
(Bi)
Marking
Reverse
Stand off
Voltage VR
(Volts)
Breakdown
Voltage VBR
(Volts) @ IT
Test
Current
IT (mA)
Maximum
Clamping
Voltage VC
@ Ipp (V)
Maximum
Peak Pulse
Current Ipp
(A)
Maximum
Reverse
Leakage IR@
VR (µA)
Agency
Approval
Uni. Bi. Min. Max.
SMAJ5.0A SMAJ5.0CA AE WE 5.0 6.40 7.00 10 9.2 43.5 800 X
SMAJ6.0A SMAJ6.0CA AG WG 6.0 6.67 7.37 10 10.3 38.8 800 X
SMAJ6.5A SMAJ6.5CA AK WK 6.5 7.22 7.98 10 11. 2 35.7 500 X
SMAJ7.0A SMAJ7.0CA AM WM 7. 0 7.78 8.60 10 12.0 33.3 200 X
SMAJ7.5A SMAJ7.5CA AP WP 7. 5 8.33 9.21 1 12.9 31.0 10 0 X
SMAJ8.0A SMAJ8.0CA AR WR 8.0 8.89 9.83 1 13.6 29.4 50 X
SMAJ8.5A SMAJ8.5CA AT WT 8.5 9.44 10.40 1 14.4 27.8 20 X
SMAJ9.0A SMAJ9.0CA AV WV 9.0 10.00 11.10 1 15.4 26.0 10 X
SMAJ10A SMAJ10CA AX WX 10.0 11.10 12.30 1 1 7. 0 23.5 5 X
SMAJ11A SMAJ11CA AZ WZ 11. 0 12.20 13.50 1 18.2 22.0 1 X
SMAJ12A SMAJ12CA BE XE 12.0 13.30 14.70 1 19.9 20.1 1 X
SMAJ13A SMAJ13CA BG XG 13.0 14.40 15.90 1 21.5 18.6 1 X
SMAJ14A SMAJ14CA BK XK 14.0 15.60 17.20 1 23.2 1 7. 2 1 X
SMAJ15A SMAJ15CA BM XM 15.0 16.70 18.50 1 24.4 16.4 1 X
SMAJ16A SMAJ16CA BP XP 16.0 17.80 19.70 1 26.0 15.4 1 X
SMAJ17A SMAJ17CA BR XR 1 7. 0 18.90 20.90 1 27.6 14.5 1 X
SMAJ18A SMAJ18CA BT XT 18.0 20.00 22.10 1 29.2 13.7 1 X
SMAJ20A SMAJ20CA BV XV 20.0 22.20 24.50 1 32.4 12.3 1 X
SMAJ22A SMAJ22CA BX XX 22.0 24.40 26.90 1 35.5 11. 3 1 X
SMAJ24A SMAJ24CA BZ XZ 24.0 26.70 29.50 1 38.9 10.3 1 X
SMAJ26A SMAJ26CA CE YE 26.0 28.90 31.90 1 42.1 9.5 1 X
SMAJ28A SMAJ28CA CG YG 28.0 31.10 34.40 1 45.4 8.8 1 X
SMAJ30A SMAJ30CA CK YK 30.0 33.30 36.80 1 48.4 8.3 1 X
SMAJ33A SMAJ33CA CM YM 33.0 36.70 40.60 1 53.3 7. 5 1 X
SMAJ36A SMAJ36CA CP YP 36.0 40.00 44.20 1 58.1 6.9 1 X
SMAJ40A SMAJ40CA CR YR 40.0 44.40 49.10 1 64.5 6.2 1 X
SMAJ43A SMAJ43CA CT YT 43.0 47.80 52.80 1 69.4 5.8 1 X
SMAJ45A SMAJ45CA CV YV 45.0 50.00 55.30 1 72.7 5.5 1 X
SMAJ48A SMAJ48CA CX YX 48.0 53.30 58.90 1 77.4 5.2 1 X
SMAJ51A SMAJ51CA CZ YZ 51.0 56.70 62.70 1 82.4 4.9 1 X
SMAJ54A SMAJ54CA RE ZE 54.0 60.00 66.30 1 87.1 4.6 1 X
SMAJ58A SMAJ58CA RG ZG 58.0 64.40 71.20 1 93.6 4.3 1 X
SMAJ60A SMAJ60CA RK ZK 60.0 66.70 73.70 1 96.8 4.1 1 X
SMAJ64A SMAJ64CA RM ZM 64.0 71.10 78.60 1 103.0 3.9 1 X
SMAJ70A SMAJ70CA RP ZP 70.0 77.80 86.00 1 113.0 3.5 1 X
SMAJ75A SMAJ75CA RR ZR 75.0 83.30 92.10 1 121.0 3.3 1 X
SMAJ78A SMAJ78CA RT ZT 78.0 86.70 95.80 1 126.0 3.2 1 X
SMAJ85A SMAJ85CA RV ZV 85.0 94.40 104.00 1 137.0 2.9 1 X
SMAJ90A SMAJ90CA RX ZX 90.0 100.00 111. 0 0 1 146.0 2.7 1 X
SMAJ100A SMAJ100CA RZ ZZ 100.0 111.0 0 123.00 1 162.0 2.5 1 X
SMAJ110A SMAJ110CA SE VE 110.0 122.00 135.00 1 177.0 2.3 1 X
SMAJ120A SMAJ120CA SG VG 120.0 133.00 147.00 1 193.0 2.1 1 X
SMAJ130A SMAJ130CA SK VK 130.0 144.00 159.00 1 209.0 1. 9 1 X
SMAJ150A SMAJ150CA SM VM 150.0 167.00 185.00 1 243.0 1. 6 1 X
SMAJ160A SMAJ160CA SP VP 160.0 178.00 197.00 1 259.0 1. 5 1 X
SMAJ170A SMAJ170CA SR VR 170.0 189.00 209.00 1 275.0 1. 5 1 X
SMAJ180A SMAJ180CA ST VT 180.0 201.00 222.00 1 292.0 1. 4 1 -
SMAJ188A SMAJ188CA SB VB 188.0 209.00 231.00 1 304.0 1. 4 1 -
SMAJ200A SMAJ200CA SV VV 200.0 224.00 247.00 1 324.0 1. 2 1 -
SMAJ220A - SX - 220.0 246.00 272.00 1 356.0 1. 1 1 -
- SMAJ220CA* - VX 220.0 246.00 272.00 1 356.0 1. 7 1 -
SMAJ250A - SZ - 250.0 279.00 309.00 1 405.0 1. 0 1 -
- SMAJ250CA*- VZ 250.0 279.00 309.00 1 405.0 1. 5 1 -
SMAJ300A*SMAJ300CA*TE UE 300.0 335.00 371.00 1 486.0 1. 3 1 -
SMAJ350A*SMAJ350CA*TG UG 350.0 391.00 432.00 1 567.0 1. 1 1 -
SMAJ400A*SMAJ400CA*TK UK 400.0 447.00 494.00 1 648.0 1. 0 1 -
SMAJ440A*SMAJ440CA*TM UM 440.0 492.00 543.00 1 713.0 0.9 1 -
Notes:
For bidirectional type having VR of 10 volts and less, the IR limit is double.
For stack-die parts, use * to label the part number.
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: BA.10/21/20
Surface Mount – 400W > SMAJ series
TVS Diodes
I-V Curve Characteristics
Ratings and Characteristic Curves (TA=25°C unless otherwise noted)
Voltage Transients
Time
Voltage Across TVS
Current Through TVS
Voltage or Current
Figure 1 - TVS Transients Clamping Waveform Figure 2 - Peak Pulse Power Rating Curve
t
d
-Pulse Width (ms)
P
PPM
-Peak Pulse Power (kW)
0.1
1
10
100
0.0010.010.1 110
Single die,400W
at 10/1000
µs, 25°C
stacked-die, 600W
at 10/1000
µs, 25°C
TJ initial = Tamb
Vc VBR VR
IR
IT
Ipp
V
Uni-directional
VF
Vc VBR VR
IR
IT
Ipp
V
Vc
VBR
VR
Ipp
IR
IT
Bi-directional
PPPM Peak Pulse Power Dissipation -- Max power dissipation
VR Stand-off Voltage -- Maximum voltage that can be applied to the TVS without operation
VBR Breakdown Voltage -- Maximum voltage that flows though the TVS at a specified test current (IT)
VC Clamping Voltage -- Peak voltage measured across the TVS at a specified Ippm (peak impulse current)
IR Reverse Leakage Current -- Current measured at VR
VF Forward Voltage Drop for Uni-directional
% Lilleliuse‘ mun Mum: / WMMNM .. mm m a u \ \
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: BA.10/21/20
Surface Mount – 400W > SMAJ series
TVS Diodes
0%
20%
40%
60%
80%
100%
0255075 100 125 150 175
Peak Pluse Power(P
PP
) or Current(I
PP
)
Derating in Percentage %
T
J
Initial Junction Temperature(˚C)
SMF5.0 ~ SMF100
Figure 3 - Peak Pulse Power Derating Curve
I
PPM
- Peak Pulse Current, % I
RSM
0
0
50
100
150
1.0 2.0 3.0 4.0
tr=10µsec
Peak Value
IPPM
IPPM
2
TJ=25°C
Pulse Width(td) is defined
as the point where the peak
current decays to 50% of IPPM
10/1000µsec. Waveform
as defined by R.E.A
td
t-Time (ms)
Half Value
IPPM
( )
Figure 4 - Pulse Waveform
Figure 5 - Typical Junction Capacitance
0.1
1
10
100
1000
0.0010.010.1 110100 1000
Transient Thermal Impedance (
°
C/W)
T -Pulse Duration (s)
P
Figure 6 - Typical Transient Thermal Impedance
0
10
20
30
40
50
60
70
110100
IFSM-Peak Forward Surve Current (A)
Number of Cycles at 60 Hz
Figure 7 - Maximum Non-Repetitive Forward Surge
Current Uni-Directional Only
Ratings and Characteristic Curves (TA=25°C unless otherwise noted) (Continued)
Cj (pF)
VBR - Reverse Breakdown Voltage (V)
Uni/Bi-direconal
V=
V
R
Uni
-direconal V=0V
Bi-direconal V=0V
1
10
100
1000
10000
110100 1000
0.1
1.0
10.0
100.0
0.01.0 2.03.0 4.05.0 6.07.0 8.09.0
I
F
-Peak Forward Current (A)
V
F
-Peak Forward Voltage(V)
Single die
Stacked-die
Figure 8 - Peak Forward Voltage Drop vs Peak Forward
Current (Typical Values)
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© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: BA.10/21/20
Surface Mount – 400W > SMAJ series
TVS Diodes
Dimensions
Physical Specifications
Weight 0.002 ounce, 0.061 gram
Case JEDEC DO-214AC Molded Plastic over glass passivated junction
Polarity Color band denotes cathode except Bipolar
Terminal Matte Tin-plated leads, Solderable per JESD22-B102
Dimensions Inches Millimeters
Min Max Min Max
A0.049 0.065 1.250 1.650
B0.157 0.181 3.990 4.600
C0.095 0.110 2.400 2.790
D0.075 0.090 1.900 2.290
E0.030 0.060 0.780 1.520
F- 0.008 - 0.203
G0.189 0.208 4.800 5.280
H0.006 0.012 0.152 0.305
I0.070 - 1.800 -
J0.082 - 2.100 -
K- 0.090 - 2.300
L0.082 - 2.100 -
Soldering Parameters
Temperature (T)
Time (t)
Ts(min)
Ts(max)
TL
TP
ts
Preheat
tL
tp
Ramp-up Critical Zone
TL to TP
Ramp-down
t 25˚C to Peak
25˚C
Reflow Condition Lead–free assembly
Pre Heat
- Temperature Min (Ts(min))150°C
- Temperature Max (Ts(max))200°C
- Time (min to max) (ts)60 – 120 secs
Average ramp up rate (Liquidus Temp (TL) to peak 3°C/second max
TS(max) to TL - Ramp-up Rate 3°C/second max
Reflow - Temperature (TL) (Liquidus) 217°C
- Time (min to max) (tL)60 – 150 seconds
Peak Temperature (TP)260+0/-5 °C
Time within 5°C of actual peak Temperature (tp)30 seconds Max
Ramp-down Rate 6°C/second Max
Time 25°C to peak Temperature (TP)8 minutes Max.
Do not exceed 260°C
I
L
K
J
Solder Pads
Environmental Specifications
High Temp. Storage JESD22-A103
HTRB JESD22-A108
Temperature Cycling JESD22-A104
MSL JEDEC-J-STD-020, Level 1
H3TRB JESD22-A101
RSH JESD22-A111
DO-214AC (SMA)
Cathode Band
A
D
EG
F
H
C
B
(for uni-directional products only)
SMAJXXXIIA W Elll
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: BA.10/21/20
Surface Mount – 400W > SMAJ series
TVS Diodes
Part Numbering System
V
R
Voltage
Bi-directional
5%
V
BR
Voltage Tolerance
SMAJ XXX C A
Series
Part Marking System
Packaging
Tape and Reel Specification
Part number Component Package Quantity Packaging Option Packaging Specification
SMAJ-xxxXX DO-214AC 5000 Tape & Reel - 12mm tape/13” reel EIA STD RS-481
Cathode
F
XX
YMXXX
Marking Code
Trace Code Marking
Y:Year Code
M: Month Code
XXX: Lot Code
Littelfuse Logo
Cathode Band
(for uni-directional products only)
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not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.