Littelfuse QxxxxLTx Series Manual do Utilizador descarregar pdf (Página 5)

173

Revised: 09/23/13

©2013 Littelfuse, Inc

Speciﬁcations are subject to change without notice.

Teccor

®

brand Thyristors

4 / 6 / 8 / 10 / 15 Amp Quadracs

QxxxxLTx Series

Figure 7: Surge Peak On-State Current vs. Number of Cycles

Note: xx = voltage

1

10

100

1000

1 10 100 1000

Surge Current Duration -- Full Cycles

Peak Surge (Non-repetitive)

On-state Current (I

TSM

) – Amps

Qxx15LT/Qxx15LTH

Qxx04LT

Qxx10LT/Qxx10LTH

Qxx08LT/Qxx08LTH

Qxx06LT/Qxx06LTH

Supply Frequency: 60Hz Sinusoidal

Load: Resistive

RMS On-State Current: [I

T(RMS)

]: Maximum Rated

Value at Speciﬁc 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.

-8%

-6%

-4%

-2%

0%

2%

4%

6%

-40 -20 0 20 40 60 80 100 120 140

Junction Temperature (T

J

) -- °C

V

BO

Change -- %

Figure 8: DIAC V

BO

Change vs. Junction Temperature

D.U.T.

MT2

MT1

C

T

= 0.1 μF

T

V

C

120 V

60 Hz

R

L

ΔV+

ΔV-

V

C

+V

BO

-V

BO

0

I

L

+I

PK

-I

PK

0

t

t

Typical pulse base width is 10μs

Figure 9: Test Circuit

Figure 10: Test Circuit Waveform

0

50

100

150

200

250

300

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0

Triggering Capacitance (C

T

) –

μ

F

Peak Output Current (I

PK

) – mA

Typical (35V Device)

Figure 11: Peak Output Current vs Triggering

Capacitance (Per Figure 9)

1 2 3 4 5 6 7 8

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