46205000000 datasheet(2/3 Pages) LITTELFUSE

2 / 3 page

Specifications are subject to change without notice.

Revised: 06/12/15

Surface Mount Fuses

NANO2® > 250V/350V VAC/VDC Time Lag Fuse > 462 Series

Average Time Current Curves

100

1000

10000

100000

CURRENT IN AMPERES

0.01

0.1

100

0.001

462 Series

Time

TS(max)

TS(min)

time to peak temperature

(t 25ºC to peak)

Ramp-down

Ramp-up

Preheat

Critical Zone

TL to TP

Soldering Parameters

Temperature Re-rating Curve

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 – 120 seconds

Average Ramp-up Rate (LiquidusTemp

L) to peak)

5°C/second max.

S(max) to TL - Ramp-up Rate

5°C/second max.

Reflow

-Temperature (T

L) (Liquidus)

217°C

-Temperature (t

60 – 90 seconds

PeakTemperature (T

250+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 peakTemperature (T

8 minutes max.

Note:

1. Rerating depicted in this curve is in addition to the standard derating of 25% for

continuous operation.

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