0456040. Fuses - 456 Series - NANO<sup>2®</sup> Very Fast-Acting Subminiature Surface Mount Fuse

Part Number: 0456040.

Technology: Fuses

Series: 456

456 Series Data Sheet
Littelfuse_Fuse_456.pdf
(170,022 bytes)
Last Uploaded: September 23, 2009

456 Series - NANO^2® Very Fast-Acting Subminiature Surface Mount Fuse

The High Current NANO² Fuse is a small square surface mount fuse that is designed to support higher current requirements of various applications.

Features

Surface mount high current fuse
Fully compatible with lead free solder alloys and higher temperature profiles associated with lead free assembly
RoHS compliant, Halogen-free
Available in ratings of 20, 30 and 40 Amperes

Applications

Voltage regulator module for PC server
Cooling fan system for PC server
Storage system power
Basestation power supply
Power Supplies for networking
Mass Storage Systems
Automotive

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)	40
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)	600
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	Very Fast-Acting (FF)
Package Size/Form Factor Close Info	Package Size	12.5 x 4.445mm
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)	454.51
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)	0.00105
Close Info	Interrupt Rating	600A@60VDC
Nominal Voltage Drop (mV) Close Info	Nominal Voltage Drop (mV)	55
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 40A

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Electrical Characteristics

Design Support

	Philipines ISO 9001:2000 Littelfuse_Phils_ISO9001_102407.pdf (197 K)
	Phils ISO 14001 2004 PhilsISO14001Certificate.pdf (131 K)