©2009 Littelfuse, Inc.

Specifications are subject to change without notice.

Transient Voltage Suppression Diodes

Revision: November 13, 2009

SMCJ Series

Surface Mount – 1500W > SMCJ series

Please refer to http://www.Littelfuse.com/series/SMCJ.html for current information.

1

10

100

0.000001

0.00001

0.0001

0.001

t

0.31x0.31" (8.0x8.0mm)

Copper Pad Area

0

0

50

100

150

1.0

2.0

3.0

4.0

tr=10μsec

Peak Value

IPPM

IPPM

2

TJ=25°C

Pulse Width(td) is defined

as the point where the peak

current decays to 50% of IPPM

10/1000μsec. Waveform

as defined by R.E.A

td

t-Time (ms)

Half Value

IPPM

( )

1

10

100

1000

10000

100000

1.0

10.0

100.0

1000.0

Tj=25C

f=1.0MHz

Vsig=50mVp-p

Uni-directional V=0V

Bi-directional V=0V

V

Bi-directional @V

R

Uni-directional @V

R

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

5

5.5

6

6.5

0

25

50

75

100

125

150

175

T

Figure 1 - Peak Pulse Power Rating

Figure 3 - Pulse Waveform

Figure 4 - Typical Junction Capacitance

Figure 5 - Steady State Power Dissipation Derating

Curve

0

20

40

60

80

100

120

140

160

180

200

1

10

100

Number of Cycles at 60 Hz

Figure 6 - Maximum Non-Repetitive Peak Forward

Surge Current Uni-Directional Only

0

20

40

60

80

100

0

25

50

75

100

125

150

175

T

Figure 2 - Pulse Derating Curve