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SMAJ SERIES

Surface Mount Transient Voltage Suppressor

Voltage Range

5.0 to 170 Volts

400 Watts Peak Power

Features

For surface mounted application

Low profile package

Built-in strain relief

Glass passivated junction

Excellent clamping capability

Fast response time: Typically less than 1.0ps from 0 volt to

BV min.

Typical I

less than 1μA above 10V

High temperature soldering guaranteed:

260

C / 10 seconds at terminals

Plastic material used carries Underwriters Laboratory

Flammability Classification 94V-0

400 watts peak pulse power capability with a 10 x 1000 us

waveform by 0.01% duty cycle (300W above 78V).

SMA/DO-214AC

.062(1.58)

.050(1.27)

.111(2.83)

.090(2.29)

.187(4.75)

.160(4.06)

.103(2.61)

.078(1.99)

Mechanical Data

Case: Molded plastic

Terminals: Solder plated

Polarity: Indicated by cathode band

Standard packaging: 12mm tape (EIA STD RS-481)

Weight: 0.064 gram

.056(1.41)

.035(0.90)

.210(5.33)

.195(4.95)

.012(.31)

.006(.15)

.008(.20)

.004(.10)

Dimensions in inches and (millimeters)

Maximum Ratings and Electrical Characteristics

Rating at 25℃ambient temperature unless otherwise specified.

Type Number

eak

ower

issipation at

=25 C, Tp=1ms(

ote 1)

Steady State Power Dissipation

Peak Forward Surge Current, 8.3 ms Single Half

Sine-wave Superimposed on Rated Load

(JEDEC method) (Note 2, 3)

Maximum Instantaneous Forward Voltage at 25.0A

for Unidirectional Only

Operating and Storage Temperature Range

Symbol

FSM

Value

Minimum 400

40.0

3.5

Units

Watts

Amps

Volts

, T

STG

-55 to + 150

Notes: 1. Non-repetitive Current Pulse Per Fig. 3 and Derated above

=25 C

Per Fig. 2.

2. Mounted on 0.2 x 0.2" (5 x 5mm) Copper Pads to Each Terminal.

3. 8.3ms Single Half Sine-wave or Equivalent Square Wave, Duty Cycle=4 Pulses Per

Minute Maximum.

Devices for Bipolar Applications

1. For Bidrectional Use C or CA Suffix forTypes SMAJ5.0 through Types SMAJ170.

2. Electrical Characteristics Apply in Both Directions.

- 530 -

RATINGS AND CHARACTERISTIC CURVES (SMAJ SERIES)

FIG.1- PEAK PULSE POWER RATING CURVE

PEAK PULSE POWER (Pppm) or CURRENT (lpp)

DERATING IN PERCENTAGE, %

100

FIG.2- PULSE DERATING CURVE

Pppm, PEAK PULSE POWER, KW

NON-REPETITIVE

PULSE WAVEFORM

SHOWN in FIG. 3

=25

1.0

0.2" sq 5.0mm

COPPER PAD AREAS

0.1

0.1 s

1.0 s

10 s

100 s

1.0ms

10ms

100

125

150

175

200

td. PULSE WIDTH, sec.

TA, AMBIENT TEMPERATURE. C

FIG.3- PULSE WAVEFORM

150

FIG.5- MAXIMUM NON-REPETITIVE PEAK FORWARD

SURGE CURRENT

PEAK FORWARD SURGE CURRENT. (A)

lppm, PEAK PULSE CURRENT %

PULSE WIDTH (td) is DEFINED

tr=10 sec. AS THE POINT WHERE THE PEAK

CURRENT DECAYS to 50% of lppm

100

8.3ms Single Half Sine Wave

JEDEC Method

TJ=TJ max.

PEAK VALUE

lppm

HALF VALUE- lpp

10/1000 sec. WAVEFORM

AS DEFINED BY R.E.A.

1.0

2.0

t, TIME, ms

3.0

4.0

NUMBER OF CYCLES AT 60Hz

100

FIG.4- TYPICAL JUNCTION CAPACITANCE

10,000

Tj=25

f=1.0MHz

Vsig=50mVp-p

Cj, JUNCTION CAPACITANCE, pF

1,000

MEASURED AT

ZERO BIAS

100

MEASURED AT

STAND-OFF

VOLTAGE,V

V(BR), BREAKDOWN VOLTAGE. (V)

100

200

- 531 -

ELECTRICAL CHARACTERISTICS (TA=25

C unless otherwise noted)

Device

Marking

Code

Working Peak

Reverse

Voltage

(Volts)

5.0

6.0

6.5

7.0

7.5

8.0

8.5

9.0

Breakdown Voltage

SMAJ5.0

SMAJ5.0A

SMAJ6.0

SMAJ6.0A

SMAJ6.5

SMAJ6.5A

SMAJ7.0

SMAJ7.0A

SMAJ7.5

SMAJ7.5A

SMAJ8.0

SMAJ8.0A

SMAJ8.5

SMAJ8.5A

SMAJ9.0

SMAJ9.0A

SMAJ10

SMAJ10A

SMAJ11

SMAJ11A

SMAJ12

SMAJ12A

SMAJ13

SMAJ13A

SMAJ14

SMAJ14A

SMAJ15

SMAJ15A

SMAJ16

SMAJ16A

SMAJ17

SMAJ17A

SMAJ18

SMAJ18A

SMAJ20

SMAJ20A

SMAJ22

SMAJ22A

SMAJ24

SMAJ24A

SMAJ26

SMAJ26A

SMAJ28

SMAJ28A

SMAJ30

SMAJ30A

SMAJ33

SMAJ33A

SMAJ36

SMAJ36A

SMAJ40

SMAJ40A

SMAJ43

SMAJ43A

) (Volts)

at I

Min.

Max.

6.40

7.30

6.40

7.00

6.67

8.15

6.67

7.37

7.22

8.82

7.22

7.98

7.78

9.51

7.78

8.60

8.33

10.3

8.33

9.21

8.89

10.9

8.89

9.83

9.44

11.5

9.44

10.4

10.0

12.2

10.0

11.1

13.6

11.1

12.3

12.2

14.9

12.2

13.5

13.3

16.3

13.3

14.7

14.4

17.6

14.4

15.9

15.6

19.1

15.6

17.2

16.7

20.4

16.7

18.5

17.8

21.8

17.8

19.7

18.9

23.1

18.9

20.9

20.0

24.4

20.0

22.1

22.2

27.1

22.2

24.5

24.4

29.8

24.4

26.9

26.7

32.6

26.7

29.5

28.9

35.3

28.9

31.9

31.1

38.0

31.1

34.4

33.3

40.7

33.3

36.8

36.7

44.9

36.7

40.6

40.0

48.9

40.0

44.2

44.4

54.3

44.4

49.1

47.8

58.4

47.8

52.8

Test

Current

(mA)

1.0

Maximum

Clamping

Voltage at I

PPM

(Volts)

(Note 5)

9.6

9.2

11.4

10.3

12.3

11.2

13.3

12.0

14.3

12.9

15.0

13.6

15.9

14.4

16.9

15.4

18.8

17.0

20.1

18.2

22.0

19.9

23.8

21.5

25.8

23.2

26.9

24.4

28.8

26.0

30.5

27.6

32.2

29.2

35.8

32.4

39.4

35.5

43.0

38.9

46.6

42.1

50.0

45.4

53.5

48.4

59.0

53.3

64.3

58.1

71.4

64.5

76.7

69.4

Maximum

Peak Pulse

Surge Current

PPM

(Note 5)(Amps)

41.7

43.5

35.1

38.8

32.5

35.7

30.1

33.3

28.0

31.0

26.7

29.4

25.2

27.8

23.7

26.0

21.3

23.5

19.9

22.0

18.2

20.1

16.8

18.6

15.5

17.2

14.9

16.4

13.9

15.4

13.1

14.5

12.4

13.7

11.2

12.3

10.2

11.3

9.3

10.3

8.6

9.5

8.0

8.8

7.5

8.3

6.8

7.5

6.2

6.9

5.6

6.2

5.2

5.8

Maximum

Reverse

Leakage

at V

(uA)

800

500

200

100

50.0

10.0

5.0

- 532 -

ELECTRICAL CHARACTERISTICS (TA=25

C unless otherwise noted)

Device

Marking

Code

Working Peak

Reverse

Voltage

(Volts)

100

110

120

130

150

160

170

Breakdown Voltage

SMAJ45

SMAJ45A

SMAJ48

SMAJ48A

SMAJ51

SMAJ51A

SMAJ54

SMAJ54A

SMAJ58

SMAJ58A

SMAJ60

SMAJ60A

SMAJ64

SMAJ64A

SMAJ70

SMAJ70A

SMAJ75

SMAJ75A

SMAJ78

SMAJ78A

SMAJ85

SMAJ85A

SMAJ90

SMAJ90A

SMAJ100

SMAJ100A

SMAJ110

SMAJ110A

SMAJ120

SMAJ120A

SMAJ130

SMAJ130A

SMAJ150

SMAJ150A

SMAJ160

SMAJ160A

SMAJ170

SMAJ170A

Notes:

1. Non-repetitive current pulse, per Fig. 3 and derated above T

=25 C per Fig. 2

2. Mounted on 5.0mm copper pads to each terminal

3. Lead temperature at TL=75 C

4. Measured 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.

) (Volts)

at I

Min.

Max.

50.0

61.1

50.0

55.3

53.3

65.1

53.3

58.9

56.7

69.3

56.7

62.7

60.0

73.3

60.0

66.3

64.4

78.7

64.4

71.2

66.7

81.5

66.7

73.7

71.1

86.9

71.1

78.6

77.8

95.1

77.8

86.0

83.3

102

83.3

92.1

86.7

106

86.7

95.8

94.4

115

94.4

104

100

122

100

111

136

111

123

122

149

122

135

133

163

133

147

144

176

144

159

167

204

167

185

178

218

178

197

189

231

189

209

Test

Current

(mA)

1.0

Maximum

Clamping

Voltage at I

PPM

(Volts)

(Note 5)

80.3

72.7

85.5

77.4

91.1

82.4

96.3

87.1

103

93.6

107

96.8

114

103

125

113

134

121

139

126

151

137

160

146

179

162

196

177

214

193

231

209

266

243

287

259

304

275

Maximum

Peak Pulse

Surge Current

PPM

(Note 5)(Amps)

5.0

5.5

4.7

5.2

4.4

4.9

4.2

4.6

3.9

4.3

3.7

4.1

3.5

3.9

3.2

3.5

3.0

3.3

2.9

3.2

2.0

2.2

1.9

2.1

1.7

1.9

1.6

1.7

1.4

1.6

1.3

1.5

1.1

1.3

1.0

1.2

1.0

1.1

Maximum

Reverse

Leakage

at V

(uA)

5.0

- 533 -

This device is designed specifically for

APPLICATION NOTES:

Recommended Pad Layout

The pad dimensions should be 0.010" longer than the

contact size in the lead axis. This allows a solder fillet

to form, see figure below. Contact factory for soldering

methods.

transiient voltage suppression from threats

generated by ESD for board levelload

switching components.

The wide leads assure a large surface contact

for good heat disipation, and a low resistance

path for surge current flow to ground.

This series is designed to optimize board

space and for use with surface mount technology

automated assembly equipment.

They can be easily mounted on printed circuit

boards and ceramic substrates to protect

sensitive components from transient voltage

damage.

Dimensions in inches and (millimeters)

- 534 -