Littelfuse Sxx70x Series Manual do Utilizador descarregar pdf (Página 4)

334

Revised: 09/23/13

Speciﬁcations are subject to change without notice.

Teccor

brand Thyristors

65 / 70 Amp Standard SCRs

Sxx65x & Sxx70x Series

Figure 7: Maximum Allowable Case Temperature vs. Average On-State Current

100

105

110

11 5

120

125

130

0 5 10 15 20 25 30 35 40 4550

CURRENT WAVEFORM: Sinusoidal

LOAD: Resistive or Inductive

CONDUCTION ANGLE: 180°

Sxx65K

Sxx65J

Maximum Allowable Case Temperature

) - °C

Average On-State Current [I

T(AVE)

] - Amps

Sxx70W

The "K" package rating with its narrow leads is

intended for high surge condition use only and not

recommended for >32A (AV) continuous current use

since lead temperature depending on lead length can

exceed PCB solder melting temperature. "J" or "W"

packages are recommended for >32A (AV) continu-

ous current requirements.

100

1000

1 10 100 1000

Sxx65K

Sxx65J

Sxx70W

Surge Current Duration -- Full Cycles

Peak Surge (Non-repetitive)

On-state Current (I

TSM

) – Amps

Figure 10: Surge Peak On-State Current vs. Number of Cycles

SUPPLY FREQUENCY: 60 Hz Sinusoidal

LOAD: Resistive

RMS On-State Current: [I

T(RMS)

]: Maximum Rated

Value at Speciﬁed Case Temperature

Notes:

1. Gate control may be lost during and immediately

following surge current interval.

2. Overload may not be repeated until junction

temperature has returned to steady-state

rated value.

Figure 8: Peak Capacitor Discharge Current Figure 9: Peak Capacitor Discharge Current Derating

100

1000

10000

0.5 1.

0 10.0 50.0

Peak Discharge Current (I

) - Amps

Pulse Current Duration (t

) - ms

TRM

0.0

0.2

0.4

0.6

0.8

1.0

1.2

0255075 100 12

5 150

Normalized Peak Current

Case Temperature (T

) - °C

Note: xx = Voltage

1 2 3 4 5 6 7 8

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