MDE Semiconductor, Inc.

78-150 Calle Tampico, Unit 210, La Quinta, CA., USA 92253 Tel: 760-564-8656 • Fax: 760-564-2414

1-800-831-4881 Email: sales@mdesemicondutor.com Web: www.mdesemiconductor.com

RATING AND CHARACTERISTIC CURVES SMAJ SERIES

10

100

1000

0

0.2

0.4

0.6

0.8

1

1.2

Number of Cycles at 60 Hz

50

200

8.3ms Single Half Sine-Wave

(JEDEC Method)

10

100

1000

10000

Measured at

Stand-Off

Vsig = 50mVp-p

Fig.4 - Typical Junction Capacitance

1

100

200

10

Uni-Directional

Bi-Directional

0

12.5

25

37.5

50

62.5

75

87.5

100

0

25

50

75

100

125

150

175

200

Fig.2 - Pulse Derating Curve

0.2x0.2"(5.0x5.0mm)

Copper Pad Areas

0.1

1

10

100

10ms

0.1µs

1.0µs

10µs

100µs

1.0ms

Fig. 1 - Peak Pulse Power Rating

0.2x0.2"(5.0x5.0mm)

Copper Pad Areas

Non-repetitive Pulse

Wavetorm shown in Fig.3

SMAJ5.0 –

SMAJ78

SMAJ85A –

SMAJ170

t - Time(ms)

4.0

150

0

1.0

2.0

Peak Value

Pulse Width(td)is defined

as the point where the

peak current decays to

10/1000µsec.Waveform

as defined by R.E.A.

Fig.3 - Pulse Waveform

4.0

50

2

100

3.0

0

1

10

100

1000

0

0.2

0.4

0.6

0.8

1

1.2

Fig. 5 - Typ.Transient Thermal Impedance