044301.5 Fuses - 443 Series - NANO<sup>2®</sup> Time Lag Subminiature Surface Mount

Part Number: 044301.5

Series: 443

443 Series Data Sheet
Littelfuse_Fuse_443.pdf
(144,626 bytes)
Last Uploaded: March 24, 2009

443 Series - NANO^2® Time Lag Subminiature Surface Mount

The 250 NANO² Fuse is a small square surface mount fuse that is designed to support higher voltage space sensitive applications. Enables compliance with the RoHS directive and is fully compatible with lead-free solder alloy and higher temperature profiles associated with lead-free assembly.

Features

250V rating

Available in ratings of 0.50A - 5.0A

Time Lag

RoHS compliant

Fully compatible with lead free solder alloys and higher temperature profiles associated with lead free assembly

Applications

AC/DC power adaptor

Telecom equipment system power

Portable system built-in AC/DC converter

High voltage DC/DC converter

Lighting system

Help	Property	Value
It is established by Littelfuse as a value of current which the fuse, fuseholder, fuse clip or other fuse accessory can carry, based on a controlled set of test conditions. Close Info	Ampere Rating (A)	1.5
The maximum rms AC voltage and/or the maximum DC voltage at which the fuse is designed to operate. For example, fuses rated at 600 volts and below may be applied at any voltage less than their rating. There is no rule for applying AC fuses in DC circuits such as applying the fuse at half its AC voltage rating. Fuses used on DC circuits must have DC ratings. Close Info	VAC (V)	250
Refers to how rapidly the fuse responds to various current overloads. Fuse characteristics can be classified into three general categories: very fast-acting, fast-acting or Slo-Blo® (time delay)fuse. The distinguishing feature of Slo-Blo fuses is that these fuses have additional thermal inertia (surge withstand) designed to tolerate normal initial or start-up overload pulse. Close Info	Opening	Slo-Blo®/Time Lag (T)/Time Delay
Package Size/Form Factor Close Info	Package Size	10.1 x 3.12mm
RMS Surge (Non-repetitive) On-state Fusing Current- Measure of let-through energy in terms of current and time for fusing purposes. Close Info	Nominal Melting I²T (A²sec)	14.72
Cold resistance is the resistance obtained using a measuring current of no more than 10% of the fuse's nominal rated current. The factory should be consulted if this parameter is critical to the design in question. Close Info	Nominal Cold Resistance (Ohms)	0.1
Close Info	Interrupt Rating	50A@250VAC
The part of a fuse enclosing the fuse elements and supporting the contacts. Body is also referred to as cartridge, tube, or case. Close Info	Body	Ceramic
Color or Alpha-Numeric code used to define the amp rating of the device for ease-of-maintenance and quality checks. Close Info	Marking Code	LF 1.5A T AC250V

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Electrical Characteristics

Design Support

Environmental Data

	Philipines ISO 9001:2000 Littelfuse_Phils_ISO9001_102407.pdf (550 K)
	Phils ISO 14001 2004 PhilsISO14001Certificate.pdf (22 K)