R12, 22-Jan-20211 / 3DT116302C
YENYO
Dimensions in inches and (millimeters)
SMAJ SERIES
Surface Mount Transient Voltage Suppressor
Working Voltage 5.0 to 440 V
Peak Pulse Power 400W
SMA/DO-214AC
Features
Glass passivated chip
400W peak pulse power capability at
10/1000μs waveform, repetition rate
(duty cycles):0.01%
Low leakage
Excellent clamping capability
Very fast response time
RoHS compliant
Mechanical Data
Case: Molded plastic, SMA/DO-214AC
Epoxy: UL 94V-0 rate flame retardant
Terminals: Solderable per MIL-STD-750,
method 2026
Polarity: Color band denotes cathode end
Mounting position: Any
NOTES : (1) Non-repetitive current pulse, per Fig. 3 and derated above TA=25
℃
per Fig. 2
(2) Mounted on copper pad area of 0.2” x 0.2” (5.0 x 5.0mm) to each terminal
(3) Measured on 8.3ms single half sine wave or equivalent square wave for unidirectional device only, duty cycle=4 per minute maximum
(4) VF<3.5V for devices of VBR<200V and VF<5.0V for devices of VBR>201V
PARAMETER UNITSYMBOL
W
Peak power dissipation with a 10/1000μs
waveform (Note 1,2)
A
1.0 W
Power dissipation on infinite heatsink
at TL=75
℃
Peak forward surge current, 8.3 ms single
half sine-wave (Note 3)
V
Maximum instantaneous forward voltage
at 50A for unidirectional only (Note 4)
PPPM
IFSM
PD
VF
400
40
VALUE
3.5 / 5.0
MAXIMUM RATINGS AND THERMAL CHARACTERISTICS
TA = 25
℃
unless otherwise noted
Typical thermal resistance junction
to ambient RθJA
℃
/W
120
Operating junction and storage temperature
range TJ , TSTG
℃
-65 to +150
Typical thermal resistance junction
to lead RθJL
℃
/W
30
.157(3.99)
.181(4.60)
.006(.152)
.012(.305)
.094(2.40)
.114(2.90)
.048(1.23)
.065(1.65)
.074(1.90)
.098(2.50)
.188(4.80)
.208(5.28)
.030(0.75)
.060(1.52) MAX .008(.203)
DT116302C 2 / 3 R12, 22-Jan-2021
Uni Bi Min (V) Max (V) IT (mA)
SMAJ5.0A SMAJ5.0CA AE WE 6.40 7.00 10 800 5.0 43.48 9.2
SMAJ6.0A SMAJ6.0CA AG WG 6.67 7.37 10 800 6.0 38.83 10.3
SMAJ6.5A SMAJ6.5CA AK WK 7.22 7.98 10 500 6.5 35.71 11.2
SMAJ7.0A SMAJ7.0CA AM WM 7.78 8.60 10 200 7.0 33.33 12.0
SMAJ7.5A SMAJ7.5CA AP WP 8.33 9.21 1 100 7.5 31.01 12.9
SMAJ8.0A SMAJ8.0CA AR WR 8.89 9.83 1 50 8.0 29.41 13.6
SMAJ8.5A SMAJ8.5CA AT WT 9.44 10.4 1 10 8.5 27.78 14.4
SMAJ9.0A SMAJ9.0CA AV WV 10.0 11.1 1 5 9.0 25.97 15.4
SMAJ10A SMAJ10CA AX WX 11.1 12.3 1 5 10 23.53 17.0
SMAJ11A SMAJ11CA AZ WZ 12.2 13.5 1 1 11 21.98 18.2
SMAJ12A SMAJ12CA BE XE 13.3 14.7 1 1 12 20.10 19.9
SMAJ13A SMAJ13CA BG XG 14.4 15.9 1 1 13 18.60 21.5
SMAJ14A SMAJ14CA BK XK 15.6 17.2 1 1 14 17.24 23.2
SMAJ15A SMAJ15CA BM XM 16.7 18.5 1 1 15 16.39 24.4
SMAJ16A SMAJ16CA BP XP 17.8 19.7 1 1 16 15.38 26.0
SMAJ17A SMAJ17CA BR XR 18.9 20.9 1 1 17 14.49 27.6
SMAJ18A SMAJ18CA BT XT 20.0 22.1 1 1 18 13.70 29.2
SMAJ20A SMAJ20CA BV XV 22.2 24.5 1 1 20 12.35 32.4
SMAJ22A SMAJ22CA BX XX 24.4 26.9 1 1 22 11.27 35.5
SMAJ24A SMAJ24CA BZ XZ 26.7 29.5 1 1 24 10.28 38.9
SMAJ26A SMAJ26CA CE YE 28.9 31.9 1 1 26 9.50 42.1
SMAJ28A SMAJ28CA CG YG 31.1 34.4 1 1 28 8.81 45.4
SMAJ30A SMAJ30CA CK YK 33.3 36.8 1 1 30 8.26 48.4
SMAJ33A SMAJ33CA CM YM 36.7 40.6 1 1 33 7.50 53.3
SMAJ36A SMAJ36CA CP YP 40.0 44.2 1 1 36 6.88 58.1
SMAJ40A SMAJ40CA CR YR 44.4 49.1 1 1 40 6.20 64.5
SMAJ43A SMAJ43CA CT YT 47.8 52.8 1 1 43 5.76 69.4
SMAJ45A SMAJ45CA CV YV 50.0 55.3 1 1 45 5.50 72.7
SMAJ48A SMAJ48CA CX YX 53.3 58.9 1 1 48 5.17 77.4
SMAJ51A SMAJ51CA CZ YZ 56.7 62.7 1 1 51 4.85 82.4
SMAJ54A SMAJ54CA RE ZE 60.0 66.3 1 1 54 4.59 87.1
SMAJ58A SMAJ58CA RG ZG 64.4 71.2 1 1 58 4.27 93.6
SMAJ60A SMAJ60CA RK ZK 66.7 73.7 1 1 60 4.13 96.8
SMAJ64A SMAJ64CA RM ZM 71.1 78.6 1 1 64 3.88 103.0
SMAJ70A SMAJ70CA RP ZP 77.8 86.0 1 1 70 3.54 113.0
SMAJ75A SMAJ75CA RR ZR 83.3 92.1 1 1 75 3.31 121.0
SMAJ78A SMAJ78CA RT ZT 86.7 95.8 1 1 78 3.17 126.0
SMAJ85A SMAJ85CA RV ZV 94.4 104 1 1 85 2.92 137.0
SMAJ90A SMAJ90CA RX ZX 100111 1 1 90 2.74 146.0
SMAJ100A SMAJ100CA RZ ZZ 111123 1 1 100 2.47 162.0
SMAJ110A SMAJ110CA SE VE 122135 1 1 110 2.26 177.0
SMAJ120A SMAJ120CA SG VG 133147 1 1 120 2.07 193.0
SMAJ130A SMAJ130CA SK VK 144159 1 1 130 1.91 209.0
SMAJ150A SMAJ150CA SM VM 167185 1 1 150 1.65 243.0
SMAJ160A SMAJ160CA SP VP 178197 1 1 160 1.54 259.0
SMAJ170A SMAJ170CA SR VR 189209 1 1 170 1.45 275.0
SMAJ180A SMAJ180CA ST VT 200220 1 1 180 1.37 291.6
SMAJ200A SMAJ200CA SW VW 224247 1 1 200 1.23 324.0
SMAJ220A SMAJ220CA SX VX 246272 1 1 220 1.12 356.0
SMAJ250A SMAJ250CA SZ VZ 279309 1 1 250 0.99 405.0
SMAJ300A SMAJ300CA DE HE 335371 1 1 300 0.82 486.0
SMAJ350A SMAJ350CA DG HG 391432 1 1 350 0.71 567.0
SMAJ400A SMAJ400CA DK HK 447494 1 1 400 0.62 648.0
SMAJ440A SMAJ440CA DM HM 492543 1 1 440 0.56 713.0
Part Number
(Uni)
Part Number
(Bi)
Electrical Characteristics(TA=25℃ unless otherwise noted)
SMAJ SERIES
Suffix "A" denotes 5% tolerance device.
Add suffix "CA" after part number to specify Bi-directional devices.
For Bi-directional type having VR of 10 volts and less, the IR limit is double.
Maximum
Reverse
Leakage
IR@VRWM
(μA)
Working
Peak
Reverse
Voltage
VRWM (V)
Maximum
Reverse
Surge
Current
IPP (A)
Maximum
Clamping
Voltage
VC@IPP
(V)
Device
Marking
Code
Breakdown Voltage
VBR@IT
R12, 22-Jan-20213 / 3
YENYO TECHNOLOGY CO., LTD.
DT116302C
RATINGS AND CHARACTERISTICS CURVES SMAJ SERIES
0
0
100
200
Peak Pulse Derating in Percentage of Peak
Power or Current (%)
Ambient Temperature (℃)
Fig.2 - Pulse Derating Curve
50
60
25
40
75 175100 125 150
20
80
0
0
120
4.0
Peak Pulse Current (%)
Time (ms)
Fig.3 - Pulse Waveform
80
60
3.0
1.0 2.0
20
100
40
Peak value (IPPM)
Tr = 10μs
Half value = IPPM
2
td
TJ = 25℃
Pluse width(td) is defined
as that point where the
peak current decays to 50%
of IPPM
10/1000 μsec. Waveform
as defined by R.E.A
1
1
10000
1000
Junction Capacitance (pF)
Reverse Breakdown Voltage (V)
Fig.4 - Typical Junction Capacitance
100
10
10 100
1000
TJ = 25℃
f=1.0MHz
Vsig=50mVp-p
Uni-directional
@zero bias
Bi-directional
@zero bias
Bi-directional@VRWM
Uni-directional@VRWM
0
1
40
100
Peak Forward Surge Current (A)
Number of Cycles at 60 Hz
Fig.6 - Maximum Non-Repetitive
Surge Current
20
10
10
30
Pulse Width 8.3ms
Single Half-Sire-Wave
(JEDEC Method)
0
0
1.0
200
Steady State Power Dissipation (W)
Lead Temperature (℃)
Fig.5 - Steady State Power
Derating Curve
0.2
0.4
0.6
0.8
25 50 75 100 125 150 175
0.1
1μs
100
10ms
Peak Power (kW)
Pulse Width
Fig.1 - Peak Pulse Power
Rating Curve
10μs
10
T
A
= 25
℃
Non-repetitive Pulse Waveform
Showen in Figure 3
1
100μs 1ms
