Littelfuse 443 Series User Manual download pdf

Speciﬁcations are subject to change without notice.

Revised: 12/19/13

Surface Mount Fuses

NANO

2®

> 250V > Time Lag > 443 Series

443 Series Fuse

Features

• 250VACvoltagerating

• Time-Lag

• Available0.50A–5.00A

• RoHSCompliant

• Fullycompatiblewith

lead-free solder alloys

and higher temperature

proﬁles associated with

lead-free assembly

% of Ampere

Rating

Opening Time

100% 4 hours, Minimum

250% 120 seconds, Maximum

Electrical Speciﬁcations by Item

Ampere

Rating

(A)

Amp Code

Max

Voltage

Rating

(V)

Interrupting

Rating

Nominal Cold

Resistance

(Ohms)

Nominal

Melting

t (A

sec)

Nominal

Voltage Drop

(mV)

Agency

Approvals

0.50 .500 250

50A @250VAC

0.600 1.61 448

0.75 .750 250 0.275 1.0 0 285 x

1 0 01. 250 0.180 10.17 234 x

1.50 01.5 250 0.100 14.72 196 x

2 002. 250 0.052 18.06 154 x

2.50 02.5 250 0.035 18.13 139 x

3 003. 250 0.028 51.44 113 x

3.50 03.5 250 0.019 53.14 98 x

4 004. 250 0.016 70.56 81 x

5 005. 250 0.0115 127.79 80

Notes:

1. Cold resistance measured at less than 10% of rated current at 23°C.

2. Agency Approval Table Key: X=Approved or Certiﬁed, P=Pending and Blank=Not Approved

3. Have special electrical characteristic needs? Contact Littelfuse to learn more about application speciﬁc options.

The 250V Nano

Fuse is a small square surface mount

fuse that is designed to enable compliance with the RoHS

directive. This product is fully compatible with lead-free

solder alloy and higher temperature proﬁles associated

with lead-free assembly.

• AC/DCpoweradaptor

• Telecomequipment

system power

• Portablesystembuilt-in

AC/DC converter

• HighvoltageDC/DC

converter

• LightingSystem

• LEDLighting

Description

Applications

Agency Approvals

Electrical Characteristics for Series

AGENCY AGENCY FILE NUMBER AMPERE RANGE

E10480 0.500A - 5.00A

Additional Information

Datasheet

Samples

Resources

1 2 3

Summary of Contents

Page 1 - 443 Series Fuse

Page 2 - Temperature Rerating Curve

Page 3 - 0443 .500 D R

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Littelfuse 443 Series User Manual

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