creat by art
Low profile package
Built-in strain relief
Glass passivated junction
Excellent clamping capability
Typical IR less than 1uA above 10V
XX = Specific Device Code
G = Green Compound
Y = Year
M = Work Month
Maximum Ratings and Electrical Characteristics
Rating at 25 ℃ ambient temperature unless otherwise specified.
Symbol Unit
PPK Watts
PDWatts
TJ, TSTG ℃
3.5 Volts
400
Amps
1
Value
Packaging: 12mm tape per EIA Std RS-481
Mechanical Data
Terminals: Pure tin plated, lead free
Case: Molded plastic
Weight: 0.064 gram
Type Number
Operating and Storage Temperature Range
Peak Power Dissipation at TA=25℃, Tp=1ms(Note 1)
Devices for Bipolar Applications
Version:G11
1. For Bidrectional Use C or CA Suffix for Types SMAJ5.0 through Types SMAJ188
Features
Polarity: Indicated by cathode band
Steady State Power Dissipation
400 watts peak pulse power capability with a 10 /
1000 us waveform (300W above 78V)
Green compound with suffix "G" on packing
code & prefix "G" on datecode
For surface mounted application
Fast response time: Typically less than 1.0ps from
0 volt to BV min
High temperature soldering guaranteed:
260℃ / 10 seconds at terminals
Plastic material used carried Underwriters
Laboratory Flammability Classification 94V-0
SMAJ SERIES
400 Watts Suface Mount Transient Voltage Suppressor
Marking Diagram
SMA/DO-214AC
Dimensions in inches and (millimeters)
2. Electrical Characterstics Apply in Both Directions
-55 to +150
Peak Forward Surge Current, 8.3ms Single Half
Sine-wave Superimposed on Rated Load
(JEDEC method) (Note 2) IFSM
Note 1: Non-repetitive Current Pulse Per Fig. 3 and Derated above TA=25℃ Per Fig. 2
Note 2: Mounted on 5 x 5mm Copper Pads to Each Terminal
40
Maximum Instantaneous Forward Voltage at 25.0A for
Unidirectional Only VF
Pb
RoHS
COMPLIANCE
RoHS
COMPLIANCE
Version:G11
RATINGS AND CHARACTERISTIC CURVES (SMAJ SERIES)
FIG.2 PULSE DERATING CURVE
0
25
50
75
100
125
0 25 50 75 100 125 150 175 200
TA, AMBIENT TEMPERATURE (oC)
PEAK PULSE POWER(PPP) OR CURRENT (IPP) A
DERATING IN PERCENTAGE (%)
FIG. 4 MAXIMUM NON-REPETITIVE FORWARD SURGE
CURRENT UNIDIRECTIONAL ONLY
0
10
20
30
40
50
1 10 100
NUMBER OF CYCLES AT 60 Hz
IFSM, PEAK FORWARD SURGE A
CURRENT (A)
8.3mS Single Half Sine Wave
JEDEC Method
FIG. 3 CLAMPING POWER PULSE WAVEFORM
0
20
40
60
80
100
120
140
0 0.5 1 1.5 2 2.5 3 3.5 4
t, TIME ms
PEAK PULSE CURRENT (%)
td
Peak Value
IPPM
tr=10usec
Half Value-IPPM/2
10/1000usec, WAVEFORM
as DEFINED by R.E.A.
PULSE WIDTH(td) is DEFINED
as the POINT WHERE the PEAK
CURRENT DECAYS to 50% OF IPPM
FIG. 5 TYPICAL JUNCTION CAPACITANCE
10
100
1000
10000
1 10 100
V(BR), BREAKDOWN VOLTAGE (V)
CJ, JUNCTIO N CAPACITANCE (pF) A
TA=25℃
f=1.0MHz
Vsig=50mVp-p
MEASURED AT
ZERO BIAS
MEASURED at
STAND-OFF
VOLTAGE,Vwm
FIG. 1 PEAK PULSE POWER RATING CURVE
0.1
1
10
100
0.1 1 10 100 1000 10000
tp, PULSE WIDTH, (uS)
PPPM, PEAK PULSE POWER, KW
NON-REPETITIVE
PULSE WAVEFORM
SHOWN in FIG.3
TA = 25℃
Test Maximum
Current Reverse Leakage
IT @ VWM
Min Max (mA) ID (uA)
SMAJ5.0 AD 5 6.4 7.3 10 9.6 41.7 800
SMAJ5.0A AE 5 6.4 7 10 9.2 43.5 800
SMAJ6.0 AF 6 6.67 8.15 10 11.4 35.1 800
SMAJ6.0A AG 6 6.67 7.37 10 10.3 38.8 800
SMAJ6.5 AH 6.5 7.22 8.82 10 12.3 32.5 500
SMAJ6.5A AK 6.5 7.22 7.98 10 11.2 35.7 500
SMAJ7.0 AL 7 7.78 9.51 10 13.3 30.1 200
SMAJ7.0A AM 7 7.78 8.6 10 12.0 33.3 200
SMAJ7.5 AN 7.5 8.33 10.30 1.0 14.3 28.0 100
SMAJ7.5A AP 7.5 8.33 9.21 1.0 12.9 31.0 100
SMAJ8.0 AQ 8 8.89 10.9 1.0 15.0 26.7 50.0
SMAJ8.0A AR 8 8.89 9.83 1.0 13.6 29.4 50.0
SMAJ8.5 AS 8.5 9.44 11.5 1.0 15.9 25.2 10.0
SMAJ8.5A AT 8.5 9.44 10.4 1.0 14.4 27.8 10.0
SMAJ9.0 AU 9 10 12.2 1.0 16.9 23.7 5.0
SMAJ9.0A AV 9 10 11.1 1.0 15.4 26.0 5.0
SMAJ10 AW 10 11.1 13.6 1.0 18.8 21.3 5.0
SMAJ10A AX 10 11.1 12.3 1.0 17.0 23.5 5.0
SMAJ11 AY 11 12.2 14.9 1.0 20.1 19.9 5.0
SMAJ11A AZ 11 12.2 13.5 1.0 18.2 22.0 5.0
SMAJ12 BD 12 13.3 16.3 1.0 22.0 18.2 5.0
SMAJ12A BE 12 13.3 14.7 1.0 19.9 20.1 5.0
SMAJ13 BF 13 14.4 17.6 1.0 23.8 16.8 5.0
SMAJ13A BG 13 14.4 15.9 1.0 21.5 18.6 5.0
SMAJ14 BH 14 15.6 19.1 1.0 25.8 15.5 5.0
SMAJ14A BK 14 15.6 17.2 1.0 23.2 17.2 5.0
SMAJ15 BL 15 16.7 20.4 1.0 26.9 14.9 5.0
SMAJ15A BM 15 16.7 18.5 1.0 24.4 16.4 5.0
SMAJ16 BN 16 17.8 21.8 1.0 28.8 13.9 5.0
SMAJ16A BP 16 17.8 19.7 1.0 26.0 15.4 5.0
SMAJ17 BQ 17 18.9 23.1 1.0 30.5 13.1 5.0
SMAJ17A BR 17 18.9 20.9 1.0 27.6 14.5 5.0
SMAJ18 BS 18 20 24.4 1.0 32.2 12.4 5.0
SMAJ18A BT 18 20 22.1 1.0 29.2 13.7 5.0
SMAJ20 BU 20 22.2 27.1 1.0 35.8 11.2 5.0
SMAJ20A BV 20 22.2 24.5 1.0 32.4 12.3 5.0
SMAJ22 BW 22 24.4 29.8 1.0 39.4 10.2 5.0
SMAJ22A BX 22 24.4 26.9 1.0 35.5 11.3 5.0
SMAJ24 BY 24 26.7 32.6 1.0 43.0 9.3 5.0
SMAJ24A BZ 24 26.7 29.5 1.0 38.9 10.3 5.0
SMAJ26 CD 26 28.9 35.3 1.0 46.6 8.6 5.0
SMAJ26A CE 26 28.9 31.9 1.0 42.1 9.5 5.0
SMAJ28 CF 28 31.1 38 1.0 50.0 8.0 5.0
SMAJ28A CG 28 31.1 34.4 1.0 45.4 8.8 5.0
SMAJ30 CH 30 33.3 40.7 1.0 53.5 7.5 5.0
SMAJ30A CK 30 33.3 36.8 1.0 48.4 8.3 5.0
SMAJ33 CL 33 36.7 44.9 1.0 59.0 6.8 5.0
SMAJ33A CM 33 36.7 40.6 1.0 53.3 7.5 5.0
SMAJ36 CN 36 40 48.9 1.0 64.3 6.2 5.0
SMAJ36A CP 36 40 44.2 1.0 58.1 6.9 5.0
SMAJ40 CQ 40 44.4 54.3 1.0 71.4 5.6 5.0
SMAJ40A CR 40 44.4 49.1 1.0 64.5 6.2 5.0
SMAJ43 CS 43 47.8 58.4 1.0 76.7 5.2 5.0
SMAJ43A CT 43 47.8 52.8 1.0 69.4 5.8 5.0
Version:G11
ELECTRICAL CHARACTERISTICS (TA=25℃ unless otherwise noted)
Breakdown Voltage
VBR (V)
at IT
Device Device
Marking
Code
Working
Peak
Reverse
Voltage
VWM
Maximum
Clamping
Voltage at IPPM
Vc(V)
(Note5)
Maximum
Peak Pulse
Surge Current
IPPM
(A)(Note5)
Test Maximum
Current Reverse Leakage
IT @ VWM
Min Max (mA) ID (uA)
SMAJ45 CU 45 50 61.1 1.0 80.3 5.0 5.0
SMAJ45A CV 45 50 55.3 1.0 72.7 5.5 5.0
SMAJ48 CW 48 53.3 65.1 1.0 85.5 4.7 5.0
SMAJ48A CX 48 53.3 58.9 1.0 77.4 5.2 5.0
SMAJ51 CY 51 56.7 69.3 1.0 91.1 4.4 5.0
SMAJ51A CZ 51 56.7 62.7 1.0 82.4 4.9 5.0
SMAJ54 RD 54 60 73.3 1.0 96.3 4.2 5.0
SMAJ54A RE 54 60 66.3 1.0 87.1 4.6 5.0
SMAJ58 RF 58 64.4 78.7 1.0 103 3.9 5.0
SMAJ58A RG 58 64.4 71.2 1.0 93.6 4.3 5.0
SMAJ60 RH 60 66.7 81.5 1.0 107 3.7 5.0
SMAJ60A RK 60 66.7 73.7 1.0 96.8 4.1 5.0
SMAJ64 RL 64 71.1 86.9 1.0 114 3.5 5.0
SMAJ64A RM 64 71.1 78.6 1.0 103 3.9 5.0
SMAJ70 RN 70 77.8 95.1 1.0 125 3.2 5.0
SMAJ70A RP 70 77.8 86 1.0 113 3.5 5.0
SMAJ75 RQ 75 83.3 102 1.0 134 3.0 5.0
SMAJ75A RR 75 83.3 92.1 1.0 121 3.3 5.0
SMAJ78 RS 78 86.7 106 1.0 139 2.9 5.0
SMAJ78A RT 78 86.7 95.8 1.0 126 3.2 5.0
SMAJ85 RU 85 94.4 115 1.0 151 2 5.0
SMAJ85A RV 85 94.4 104 1.0 137 2.2 5.0
SMAJ90 RW 90 100 122 1.0 160 1.9 5.0
SMAJ90A RX 90 100 111 1.0 146 2.1 5.0
SMAJ100 RY 100 111 136 1.0 179 1.7 5.0
SMAJ100A RZ 100 111 123 1.0 162 1.9 5.0
SMAJ110 SD 110 122 149 1.0 196 1.6 5.0
SMAJ110A SE 110 122 135 1.0 177 1.7 5.0
SMAJ120 SF 120 133 163 1.0 214 1.4 5.0
SMAJ120A SG 120 133 147 1.0 193 1.6 5.0
SMAJ130 SH 130 144 176 1.0 231 1.3 5.0
SMAJ130A SK 130 144 159 1.0 209 1.5 5.0
SMAJ150 SL 150 167 204 1.0 266 1.1 5.0
SMAJ150A SM 150 167 185 1.0 243 1.3 5.0
SMAJ160 SN 160 178 218 1.0 287 1 5.0
SMAJ160A SP 160 178 197 1.0 259 1.2 5.0
SMAJ170 SQ 170 189 231 1.0 304 1 5.0
SMAJ170A SR 170 189 209 1.0 275 1.1 5.0
SMAJ188 ST 188 209 255 1.0 344 0.9 5.0
SMAJ188A SS 188 209 231 1.0 328 0.91 5.0
Notes:
1. Non-repetitive current pulse, per Fig. 3 and derated above T A=25℃ per Fig. 2
2. Mounted on 5 x 5mm copper pads to each terminal
3. Lead temperature at TL=75℃
4. Measure on 8.3ms single half sine-wave duty cycle=4 pulses per minutes maximum
5. Peak pulse power waveform is 10/1000 us
6. For Bi-Directional devices having VR of 10 volts and under, the IR limit is double.
Version:G11
Maximum
Clamping
Voltage at IPPM
Vc(V)
(Note5)
Maximum
Peak Pulse
Surge Current
IPPM
(A)(Note5)
ELECTRICAL CHARACTERISTICS (TA=25℃ unless otherwise noted)
Device Device
Marking
Code
Breakdown Voltage
VBR (V)
at IT
Working
Peak
Reverse
Voltage
VWM
TVS APPLICATION NOTES:
Version : G11
Any combination of this three, or any one of these applivations, will prevent damage to the load. This would
require varying trade-offs in power supply protection versus maintenance(changing the time fuse).
An additional method is to utilize the Trans
RECOMMENDED PAD SIZES
The pad dimensions should be 0.010"(0.25mm) longer than the contact size, in the lead axis.
This allows a solder filler to form, see figure below. Contact factort for soldering methods.
Transient Voltage Suppressors may be used at various points in a circuit to provide various degrees of
protection. The following is a typical linear power supply with transient voltage suppressor units plaved at
different points. All provide protection
Transient Voltage Suppressor 1 provides maximum protection. However, the system will probably require
replacement of the line fuse(F) since it provides a dominant portion of the series impedance when a surge is
encountered.
Hower, we do not recommend to use the TVS diode here, unless we can know the electric circuit
impedance and the magnitude of surge rushed into the circuit. Otherwise the TVS diode is easy to be
destroyed by voltage surge.
Transient Voltage Suppressor 2 provides execllent protection of circuitry excluding the transformer(T).
However, since the transformer is a large part of the series impedance, the chance of the line fuse opening
during the surge condition is reduced.
Transient Voltage Suppressor 3 provides the load with complete protection. It uses a unidirectional
Transient Voltage Suppressor, which is a cost advantage. The series impedance now includes the line fuse,
transformer, and bridge rectifier(B) so failure
