4. Surge capability given for both directions

1.1

Characteristics (curves)

Figure 3. Maximum peak power dissipation versus initial

junction temperature

0

100

200

300

400

500

0

25

50

75

100

125

150

175

200

Ppp (W)

Tj (°C)

VRM ≥ 100V

VRM < 100V

10/1000 µs

Figure 4. Maximum peak pulse power versus exponential

pulse duration

10

100

1000

10000

0.01

0.1

1

10

Ppp (W)

tp (ms)

Tj initial = 25 °C

Figure 5. Maximum clamping voltage versus peak pulse

current

0.1

1

10

100

1000

1

10

100

1000

Ipp (A)

VCL (V)

8/20 µs

10/1000 µs

Figure 6. Dynamic resistance versus pulse duration

0.01

0.1

1

10

100

1000

0.01

0.1

1

10

RD (Ω)

tp (ms)

SMA4F5.0A

SMA4F33A

SMA4F70A

SMA4F188A

SMA4FxxA

Characteristics (curves)

DS12542 - Rev 4

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