Littelfuse Sxx12x Series Manual de usuario descargar pdf (Pagina 5)

Revised: 01/06/14

Speciﬁcations are subject to change without notice.

Teccor

brand Thyristors

12 Amp Standard SCRs

Sxx12x Series

100

1000

0001001011

Peak Surge (Non-repetitive)

On-state Current (I

TSM

) – Amps

Surge Current Duration - Full Cycles

Figure 12: 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.

Soldering Parameters

Reﬂow Condition Pb – Free assembly

Pre Heat

- Temperature Min (T

s(min)

) 150°C

- Temperature Max (T

s(max)

) 200°C

- Time (min to max) (t

) 60 – 180 secs

Average ramp up rate (Liquidus Temp)

) to peak

5°C/second max

S(max)

to T

- Ramp-up Rate 5°C/second max

Reﬂow

- Temperature (T

) (Liquidus) 217°C

- Temperature (t

) 60 – 150 seconds

Peak Temperature (T

) 260

+0/-5

°C

Time within 5°C of actual peak

Temperature (t

)

20 – 40 seconds

Ramp-down Rate 5°C/second max

Time 25°C to peak Temperature (T

) 8 minutes Max.

Do not exceed 280°C

Time

Temperature

S(max)

S(min)

time to peak temperature

Preheat

eat

Ramp-upRamp-up

Ramp-down

1 2 3 4 5 6 7 8 9

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Littelfuse Sxx12x Series Manual de usuario Pagina 5

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