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Page <1> V1.204/02/14
SMAJ Series
Features:
• For surface mounted application
• Low prole package
• Built-in strain relief
• Glass passivated junction
• Excellent clamping capability
• Fast response time : typically less than 1.0ps from 0 volt to BV minimum
• Typical Ir less than 1μA above 10V
• High temperature soldering guaranteed : 260°C/10 seconds at terminals.
• Plastic material
• 400 watts peak pulse power capability with a 10 × 1000μs waveform
by 0.01% duty cycle (300W above 78V)
Mechanical Data
Case : Moulded plastic
Terminals : Pure tin plated lead free
Polarity : Cathode band marking on device for Uni-Directional parts (‘A’), blank for Bi-Directional (‘CA’)
Standard Packaging : 12mm tape (EIA STD RS-481)
Weight : 0.064 gram
Max. Ratings and Electrical Characteristics
Rating at 25°C ambient temperature unless otherwise specied.
Type Number Symbol Value Units
Peak Power Dissipation at Ta = 25°C, Tp = 1ms (Note 1) Ppk 400 (Min.) Watts
Steady Power Dissipation Pd1
Peak Forward Surge Current, 8.3ms Single Half Sine-wave
Superimposed on Rated Load (JEDEC method) (Note 2,3) Ifsm 40 Amps
Maximum Instantaneous Forward Voltage at 25A for
Unidirectional Only Vf3.5 Volts
Operating and Storage Temperature Range Tj, Tstg -55 to +150 °C
Notes : 1. Non-repetitive current pulse and derated above Ta = 25°C.
2. Mounted on 5mm2 (0.013mm thick) copper pads to each terminal.
3. 8.3ms single half sine-wave or equivalent square wave, duty cycle = 4 pulses per
minutes maximum.
Devices for bipolar applications:
1. For bidirectional use C or CA sufx for types SMAJ5.0 through types SMAJ188.
2. Electrical characteristics apply in both directions.
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Page <2> V1.204/02/14
SMAJ Series
Ratings and Characteristics Curves (Ta = 25 unless otherwise noted)
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Page <3> V1.204/02/14
SMAJ Series
Electrical Characteristics (Ta = 25°C unless otherwise noted)
Device
Device
Marking
Code
(Note 9)
Working
Peak
Reverse
Voltage
Vwm
(Volts)
Breakdown Voltage
V(br) (Volts)
at ItTest Current
at IT (mA)
Maximum
Clamping
Voltage at
Ippm Vc
(Volts)
(Note 5)
Maximum
Peak Pulse
Surge
Current
Ippm
(Note 5)
(Amps)
Maximum
Reverse
Leakage
at Vwm
ID (μA)
Minimum Maximum
SMAJ22A BW 22 24.4 29.8
1
39.4 10.2
5
SMAJ24A BY 24 26.7 32.6 43 9.3
SMAJ26A CD 26 28.9 35.3 46.6 8.6
SMAJ28A CF 28 31.1 38 50 8
SMAJ30A CH 30 33.3 40.7 53.5 7.5
SMAJ33A CL 33 36.7 44.9 59 6.8
SMAJ36A CN 36 40 48.9 64.3 6.2
SMAJ40A CQ 40 44.4 54.3 71.4 5.6
SMAJ43A CS 43 47.8 58.4 76.7 5.2
SMAJ45A CU 45 50 61.1 80.3 5
SMAJ48A CW 48 53.3 65.1 85.5 4.7
SMAJ5.0A AD 5 6.4 7.3 10 9.6 41.7 800
SMAJ51A CY 51 56.7 69.3
1
91.1 4.4
5SMAJ54A RD 54 60 73.3 96.3 4.2
SMAJ58A RF 58 64.4 78.7 103 3.9
SMAJ6.0A AF 6 6.67 8.15 10 11.4 35.1 800
SMAJ6.5A AH 6.5 7.22 8.82 12.3 32.5 500
Dimensions
Dimensions : Inches (Millimetres)
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Page <4> V1.204/02/14
SMAJ Series
Device
Device
Marking
Code
(Note 9)
Working
Peak
Reverse
Voltage
Vwm
(Volts)
Breakdown Voltage
V(br) (Volts)
at ItTest Current
at IT (mA)
Maximum
Clamping
Voltage at
Ippm Vc
(Volts)
(Note 5)
Maximum
Peak Pulse
Surge
Current
Ippm
(Note 5)
(Amps)
Maximum
Reverse
Leakage
at Vwm
ID (μA)
Minimum Maximum
SMAJ60A RH 60 66.7 81.5 1107 3.7 5
SMAJ64A RL 64 71.1 86.9 114 3.5
SMAJ7.0A AL 7 7.78 9.51 10 13.3 30.1 200
SMAJ7.5A AN 7.5 8.33 10.3
1
14.3 28 100
SMAJ75A RQ 75 83.3 102 134 3 5
SMAJ78A RS 78 86.7 106 139 2.9
SMAJ8.5A AS 8.5 9.44 11.5 15.9 25.2 10
SMAJ85A RU 85 94.4 115 151 2
5
SMAJ9.0A AU 9 10 12.2 16.9 23.7
SMAJ100A RY 100 111 136 179 1.7
SMAJ10A AW 10 11.1 13.6 18.8 21.3
SMAJ110A SD 110 122 149 196 1.6
SMAJ11A AY 11 12.2 14.9 20.1 19.9
SMAJ120A SF 120 133 163 214 1.4
SMAJ12A BD 12 13.3 16.3 22 18.2
SMAJ130A SH 130 144 176 231 1.3
SMAJ13A BF 13 14.4 17.6 23.8 16.8
SMAJ150A SL 150 167 204 266 1.1
SMAJ15A BL 15 16.7 20.4 26.9 14.9
SMAJ160A SN 160 178 218 287 1
SMAJ16A BN 16 17.8 21.8 28.8 13.9
SMAJ170A SQ 170 189 231 304 1
SMAJ18A BS 18 20 24.4 32.2 12.4
SMAJ20A BU 20 22.2 27.1 35.8 11.2
SMAJ22CA BX 22 24.4 26.9 35.5 11.3
SMAJ24CA BZ 24 26.7 29.5 38.9 10.3
SMAJ26CA CE 26 28.9 31.9 42.1 9.5
SMAJ28CA CG 28 31.1 34.4 45.4 8.8
SMAJ30CA CK 30 33.3 36.8 48.4 8.3
SMAJ33CA CM 33 36.7 40.6 53.3 7.5
SMAJ36CA CP 36 40 44.2 58.1 6.9
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Page <5> V1.204/02/14
SMAJ Series
Device
Device
Marking
Code
(Note 9)
Working
Peak
Reverse
Voltage
Vwm
(Volts)
Breakdown Voltage
V(br) (Volts)
at ItTest Current
at IT (mA)
Maximum
Clamping
Voltage at
Ippm Vc
(Volts)
(Note 5)
Maximum
Peak Pulse
Surge
Current
Ippm
(Note 5)
(Amps)
Maximum
Reverse
Leakage
at Vwm
ID (μA)
Minimum Maximum
SMAJ40CA CR 40 44.4 49.1
1
64.5 6.2
5
SMAJ43CA CT 43 47.8 52.8 69.4 5.8
SMAJ45CA CV 45 50 55.3 72.7 5.5
SMAJ48CA CX 48 53.3 58.9 77.4 5.2
SMAJ5.0CA AE 5 6.4 7 10 9.2 43.5 800
SMAJ51CA CZ 51 56.7 62.7
1
82.4 4.9
5SMAJ54CA RE 54 60 66.3 87.1 4.6
SMAJ58CA RG 58 64.4 71.2 93.6 4.3
SMAJ6.0CA AG 6 6.67 7.37 10 10.3 38.8 800
SMAJ6.5CA AK 6.5 7.22 7.98 11.2 35.7 500
SMAJ60CA RK 60 66.7 73.7 196.8 4.1 5
SMAJ64CA RM 64 71.1 78.6 103 3.9
SMAJ7.0CA AM 7 7.78 8.6 10 12 33.3 200
SMAJ7.5CA AP 7.5 8.33 9.21
1
12.9 31 100
SMAJ75CA RR 75 83.3 92.1 121 3.3 5
SMAJ78CA RT 78 86.7 95.8 126 3.2
SMAJ8.5CA AT 8.5 9.44 10.4 14.4 27.8 10
SMAJ85CA RV 85 94.4 104 137 2.2
5
SMAJ9.0CA AV 9 10 11.1 15.4 26
SMAJ100CA RZ 100 111 123 162 1.9
SMAJ10CA AX 10 11.1 12.3 17 23.5
SMAJ110CA SE 110 122 135 177 1.7
SMAJ11CA AZ 11 12.2 13.5 18.2 22
SMAJ120CA SG 120 133 147 193 1.6
SMAJ12CA BE 12 13.3 14.7 19.9 20.1
SMAJ130CA SK 130 144 159 209 1.5
SMAJ13CA BG 13 14.4 15.9 21.5 18.6
SMAJ150CA SM 150 167 185 243 1.3
SMAJ15CA BM 15 16.7 18.5 24.4 16.4
SMAJ160CA SP 160 178 197 259 1.2
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Page <6> V1.204/02/14
SMAJ Series
Important Notice : This data sheet and its contents (the “Information”) belong to the members of the Premier Farnell group of companies (the “Group”) or are licensed to it. No licence is granted
for the use of it other than for information purposes in connection with the products to which it relates. No licence of any intellectual property rights is granted. The Information is subject to change
without notice and replaces all data sheets previously supplied. The Information supplied is believed to be accurate but the Group assumes no responsibility for its accuracy or completeness, any
error in or omission from it or for any use made of it. Users of this data sheet should check for themselves the Information and the suitability of the products for their purpose and not make any
assumptions based on information included or omitted. Liability for loss or damage resulting from any reliance on the Information or use of it (including liability resulting from negligence or where the
Group was aware of the possibility of such loss or damage arising) is excluded. This will not operate to limit or restrict the Group’s liability for death or personal injury resulting from its negligence.
Multicomp is the registered trademark of the Group. © Premier Farnell plc 2012.
Notes:
1. Sufx A = Unidirectional
2. Sufx CA = Bidirectional
3. Non-repetitive current pulse and derated above Ta = 25°C.
4. Mounted on 5mm2 copper pads to each terminal.
5. Lead temperature at Tl = 75°C.
6. Measured on 8.3ms single half sine-wave duty cycle = 4 pulses per minutes max.
7. Peak pulse power waveform is 10/1000 us.
8. For bi-directional devices having Vr of 10 volts and under, the IR limit is double.
9. Cathode band marking on device for Uni-Directional parts , blank for Bi-Directional
Device
Device
Marking
Code
(Note 9)
Working
Peak
Reverse
Voltage
Vwm
(Volts)
Breakdown Voltage
V(br) (Volts)
at ItTest Current
at IT (mA)
Maximum
Clamping
Voltage at
Ippm Vc
(Volts)
(Note 5)
Maximum
Peak Pulse
Surge
Current
Ippm
(Note 5)
(Amps)
Maximum
Reverse
Leakage
at Vwm
ID (μA)
Minimum Maximum
SMAJ16CA BP 16 17.8 19.7
1
26 15.4
5
SMAJ170CA SR 170 189 209 275 1.1
SMAJ18CA BT 18 20 22.1 29.2 13.7
SMAJ20CA BV 20 22.2 24.5 32.4 12.3