Littelfuse P4KE Series Manual do Utilizador descarregar pdf (Página 4)

Transient Voltage Suppression Diodes

Speciﬁcations are subject to change without notice.

Revised: 01/24/14

Axial Leaded – 400W > P4KE series

100

0255075 100 125 150

175

-Ambient temperature (ºC)

Peak Pulse Power (P

) or Current (I

)

Derating in Percentage %

Figure 3 - Pulse Derating Curve

PPM

- Peak Pulse Current, % I

RSM

100

150

1.0 2.0 3.0 4.0

=10µsec

Peak Value

PPM

=25°C

Pulse Width(td) is deﬁned

as the point where the peak

current decays to 50% of I

PPM

10/1000µsec. Waveform

as deﬁned by R.E.A

t-Time (ms)

Half Value

PPM

( )

100

1000

10000

1.010.0100.0 1000.0

- Reverse Breakdown Voltage (V)

Cj (pF)

=25C

1.0MHz

ig=50mVp

-p

Uni-directional VR=0V

Bi-directional VR=0V

Uni-directional @ V

-directional @V

Figure 4 - Pulse Waveform

Figure 5 - Typical Junction Capacitance Uni-Directional Figure 6 - Steady Pulse Derating Curve

0.5

1.0

1.5

0255075100 125150 175 200

Steady Sate Power Dissipation (W)

L = 0.375" (9.5mm)

Lead Lengths

-Lead Temperature(ºC)

mber of Cycles at 60 Hz

FSM

- Peak Forward Surge Current

(A)

Figure 7 - Maximum Non-Repetitive Peak Forward

Surge Current Uni-Directional Only

Ratings and Characteristic Curves (T

=25°C unless otherwise noted) (Continued)

1 2 3 4 5 6

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