7
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Transient Voltage Suppression Diodes
Revision: January 09, 2009
Surface Mount – 400W > SMAJ series
SMAJ Series
Please refer to http://www.Littelfuse.com/series/SMAJ.html for current information.
SMAJ Series
SMAJ Series
RoHS
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=25ºC by 10x1000μs waveform
(Fig.1)(Note 1), (Note 2)
PPPM 400 W
Power Dissipation on infinite heat
sink at TA=50OCPM(AV) 3.3 W
Peak Forward Surge Current, 8.3ms
Single Half Sine Wave (Note 3) IFSM 40 A
Maximum Instantaneous Forward
Voltage at 25A for Unidirectional
only (Note 4)
VF3.5V/6.5 V
Operating Junction and Storage
Temperature Range T
J, TSTG -65 to 150 °C
Typical Thermal Resistance Junction
to Lead RuJL 30 °C/W
Typical Thermal Resistance Junction
to Ambient RuJA 120 °C/W
Notes:
1. Non-repetitive current pulse, per Fig.3 and derated above TA=25ºC per Fig. 2.
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 VBR _
<
200V and VF< 6.5V for VBR _
>
201V.
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.
t)BMPHFO'SFF
t3P)4DPNQMJBOU
t'PSTVSGBDFNPVOUFE
applications to optimize
board space
t-PXQSPmMFQBDLBHF
t#VJMUJOTUSBJOSFMJFG
t(MBTTQBTTJWBUFEKVODUJPO
t-PXJOEVDUBODF
t&YDFMMFOUDMBNQJOH
capability
t81FBL1VMTFQPXFS
capability at 10 x 1000μs
waveform, repetition rate
(duty cycle): 0.01%
t'BTUSFTQPOTFUJNF
typically less than 1.0ps
from 0 Volts to VBR min
t5ZQJDBM*R less than 1μA
above 12V
t)JHIUFNQFSBUVSF
soldering: 260°C/40
seconds at terminals
t5ZQJDBMNBYJNVN
temperature coefficient
ΔVBR = 0.1% x VBR@25°C x ΔT
t1MBTUJDQBDLBHFIBT
Underwriters Laboratory
Flammability 94V-O
t.BUUF5JO-FBEoGSFF
Plated
8
Transient Voltage Suppression Diodes
Revision: January 09, 2009
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
SMAJ Series
Surface Mount – 400W > SMAJ series
Please refer to http://www.Littelfuse.com/series/SMAJ.html for current information.
Electrical Characteristics
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 07.00 10 9.2 43.5 800 X
SMAJ6.0A SMAJ6.0CA AG WG 6.0 6.67 07.37 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 31.0 100 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 17.0 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 17.2 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 17.0 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 90.0 100.00 111.00 1 146.0 2.7 1 X
SMAJ100A SMAJ100CA RZ ZZ 100.0 111.00 123.00 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
SMAJ200A SMAJ200CA SV VV 200.0 224.00 247.00 1 324.0 1.2 1
SMAJ220A SMAJ220CA SX VX 220.0 246.00 272.00 1 356.0 1.1 1
SMAJ250A SMAJ250CA SZ VZ 250.0 279.00 309.00 1 405.0 1.0 1
SMAJ300A SMAJ300CA TE UE 300.0 335.00 371.00 1 486.0 0.8 1
SMAJ350A SMAJ350CA TG UG 350.0 391.00 432.00 1 567.0 0.7 1
SMAJ400A SMAJ400CA TK UK 400.0 447.00 494.00 1 648.0 0.6 1
SMAJ440A SMAJ440CA TM UM 440.0 492.00 543.00 1 713.0 0.6 1
For bidirectional type having VRWM of 10 volts and less, the IR limit is double.
For parts without A (VBR is ± 10% and VC is 5% higher than with A parts).
9
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Transient Voltage Suppression Diodes
Revision: January 09, 2009
Surface Mount – 400W > SMAJ series
SMAJ Series
Please refer to http://www.Littelfuse.com/series/SMAJ.html for current information.
SMAJ Series
Ratings and Characteristic Curves (TA=25°C unless otherwise noted)
0
20
40
60
80
100
0 25 50 75 100 125 150 175
TA-Ambient temperature (ºC)
Peak Pulse Power (PPP) or Current (IPP)
Derating in Percentage %
1
10
100
1000
10000
1.0 10.0 100.0 1000.0
Cj (pF)
Tj=25ºC
f=1.0MHz
Vsig=50mVp-p
Uni-directional V=0V
Bi-directional V=0V
Uni-directional @VR
Bi-directional @VR
V
BR
- Reverse Breakdown Voltage (V)
0.1
1
10
0.000001 0.00001 0.0001 0.001
td-Pulse Width (sec.)
PPPM-Peak Pulse Power (kW)
0.2x0.2" (5.0x5.0mm)
Copper Pad Area
Figure 1 - Peak Pulse Power Rating Curve Figure 2 - Pulse Derating Curve
IPPM- Peak Pulse Current, % IRSM
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 3 - Pulse Waveform Figure 4 - Typical Junction Capacitance
0
0.2
0.4
0.6
0.8
1
1.2
0 25 50 75 100 125 150 175
PM(AV), Steady State Power Dissipation (W)
TA - Ambient Temperature (ºC)
Figure 5 - Steady State Power Dissipation Derating
Curve
0
5
10
15
20
25
30
35
40
45
1 10 100
Number of Cycles at 60 Hz
IFSM - Peak Forward Surve Current
(A)
Figure 6 - Maximum Non-Repetitive Forward Surge
Current Uni-Directional Only
10
Transient Voltage Suppression Diodes
Revision: January 09, 2009
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
SMAJ Series
Surface Mount – 400W > SMAJ series
Please refer to http://www.Littelfuse.com/series/SMAJ.html for current information.
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-B102D
Dimensions Inches Millimeters
Min Max Min Max
A 0.049 0.065 1.250 1.650
B 0.157 0.177 3.990 4.500
C 0.100 0.110 2.540 2.790
D 0.078 0.090 1.980 2.290
E 0.030 0.060 0.780 1.520
F - 0.008 - 0.203
G 0.194 0.208 4.930 5.280
H 0.006 0.012 0.152 0.305
I 0.070 - 1.800 -
J 0.082 - 2.100 -
K - 0.090 - 2.300
L 0.082 - 2.100 -
Environmental Specifications
Temperature Cycle JESD22-A104
Pressure Cooker JESD22-A102
High Temp. Storage JESD22-A103
HTRB JESD22-A108
Thermal Shock JESD22-A106
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 -FBEoGSFFBTTFNCMZ
Pre Heat
- Temperature Min (Ts(min))150°C
- Temperature Max (Ts(max))200°C
- Time (min to max) (ts)oTFDT
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) (ts)oTFDPOET
Peak Temperature (TP)260+0/-5 °C
Time within 5°C of actual peak
Temperature (tp)oTFDPOET
Ramp-down Rate 6°C/second max
Time 25°C to peak Temperature (TP)8 minutes Max.
Do not exceed 280°C
DO-214AC (SMA)
Cathode Band
A
D
EG
F
H
C
B
I
L
K
J
11
©2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Transient Voltage Suppression Diodes
Revision: January 09, 2009
Surface Mount – 400W > SMAJ series
SMAJ Series
Please refer to http://www.Littelfuse.com/series/SMAJ.html for current information.
SMAJ Series
Part Numbering System
VO LTAGE
BI-DIRECTIONAL
5% VOLTAGE TOLERANCE
SMAJ XXX C A
SERIES
Part Marking System
Packaging
Part number Component
Package Quantity Packaging
Option
Packaging
Specification
SMAJxxxXX DO-214AC 5000 5BQF3FFMoNNwUBQF EIA RS-481
F
XXX
Marking Code
Littelfuse Logo
Cathode Band
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Littelfuse:
SMAJ130CA SMAJ5.0 SMAJ8.0A SMAJ110A SMAJ40C SMAJ16CA SMAJ20 SMAJ22A SMAJ36A SMAJ51
SMAJ110CA SMAJ170 SMAJ200C SMAJ22CA SMAJ30 SMAJ300CA SMAJ58CA SMAJ7.0A SMAJ12CA
SMAJ26C SMAJ28A SMAJ48 SMAJ100A SMAJ110 SMAJ170CA SMAJ22 SMAJ48C SMAJ11CA SMAJ160
SMAJ160CA SMAJ220C SMAJ28CA SMAJ6.5A SMAJ75 SMAJ7.5A SMAJ100CA SMAJ48CA SMAJ6.0
SMAJ64A SMAJ70A SMAJ15A SMAJ220A SMAJ8.5 SMAJ90A SMAJ10C SMAJ13C SMAJ14CA SMAJ51CA
SMAJ75C SMAJ43CA SMAJ43A SMAJ300A SMAJ36CA SMAJ440A SMAJ100 SMAJ30C SMAJ5.0C SMAJ58A
SMAJ78A SMAJ9.0CA SMAJ150A SMAJ250CA SMAJ300 SMAJ36 SMAJ48A SMAJ8.0CA SMAJ20CA
SMAJ54C SMAJ54CA SMAJ130C SMAJ18CA SMAJ220CA SMAJ33A SMAJ5.0A SMAJ78 SMAJ8.5A SMAJ15C
SMAJ8.5C SMAJ26CA SMAJ8.0C SMAJ10A SMAJ200 SMAJ51C SMAJ60C SMAJ7.5CA SMAJ18C SMAJ64
SMAJ9.0C SMAJ7.5C SMAJ85 SMAJ9.0A SMAJ5.0CA SMAJ12 SMAJ130 SMAJ17 SMAJ24 SMAJ8.0
SMAJ250C SMAJ30A SMAJ45A