0448001.MR datasheet(3/4 Pages) LITTELFUSE

Part #	0448001.MR

Description	Surface Mount Fuses Surface Mount Fuses

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Manufacturer	LITTELFUSE [Littelfuse]

Direct Link	http://www.littelfuse.com

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3 / 4 page

Speciﬁcations are subject to change without notice.

Surface Mount Fuses

448 Series

NANO2® > Very Fast-Acting > 448 Series

Please refer to www.littelfuse.com/series/448.html for current information.

Average Time Current Curves

Reﬂow Condition

Pre Heat

- Temperature Min (T

s(min))

- Temperature Max (T

s(max))

- Time (Min to Max) (t

s)

60 – 120 secs

Average ramp up rate (Liquidus Temp

(T

L) to peak

T

S(max) to TL - Ramp-up Rate

Reﬂow

- Temperature (T

L) (Liquidus)

- Temperature (t

L)

60 – 90 seconds

Peak Temperature (T

P)

250+0/-5

Time within 5°C of actual peak

Temperature (t

p)

20 – 40 seconds

Ramp-down Rate

Time 25°C to peak Temperature (T

P)

8 minutes max.

Do not exceed

Wave Soldering Parameters

Temperature, 10

seconds max.

Soldering Parameters

Temperature Rerating Curve

0.001

0.01

0.1

1

10

100

0

1

0

1

0

1

.

0

CURRENT IN AMPS

continuous operation.

Time

TP

TL

TS(max)

TS(min)

25

tP

tL

tS

time to peak temperature

(t 25ºC to peak)

Ramp-down

Ramp-up

Preheat

Critical Zone

TL to TP

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