Littelfuse V140LS5 Varistor: Equivalent & Substitute Parts

Part Overview

The Littelfuse V140LS5 is a 220 V, 2.5 kA disc varistor designed for transient voltage suppression in through-hole applications. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance requirements. Substitute parts maintain identical electrical performance and mechanical compatibility while offering active product status and improved supply chain availability.

Key Parameters

Parameter	Value
Varistor Voltage (Typical)	220 V
Maximum AC Voltage	140 V
Maximum DC Voltage	180 V
Current - Surge	2.5 kA
Energy Absorption	22 J
Mounting Type	Through Hole
Package / Case	Disc 10mm
Operating Temperature Range	-55°C to 85°C
Number of Circuits	1
Capacitance @ 1 MHz	400 pF

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters:

Varistor voltage range (Min/Typ/Max): 198 V / 220 V / 242 V
Maximum AC and DC voltage ratings: 140 V AC / 180 V DC
Surge current capacity: 2.5 kA
Energy absorption: 22 J
Mounting configuration: Through Hole
Physical package: Disc 10mm
Operating temperature: -55°C to 85°C
Capacitance: 400 pF @ 1 MHz
Number of circuits: 1

All substitute parts listed maintain these exact electrical and mechanical specifications. Packaging format differences (bulk versus tape & reel) do not affect functional equivalence.

Parameter Comparison

Part Number	Manufacturer	Series	Product Status	Packaging	Varistor Voltage (Typ)	Max AC / DC Volts	Surge Current	Energy	Temperature Range	RoHS Status
V140LS5	Littelfuse Inc.	LS	Obsolete	Bulk	220 V	140 V / 180 V	2.5 kA	22 J	-55°C to 85°C	ROHS3 Compliant
V140LS5P	Littelfuse Inc.	LS	Active	Tape & Reel	220 V	140 V / 180 V	2.5 kA	22 J	-55°C to 85°C	ROHS3 Compliant
V140LS5PX2855	Littelfuse Inc.	LS	Active	Tape & Reel	220 V	140 V / 180 V	2.5 kA	22 J	-55°C to 85°C	ROHS3 Compliant
V140LT5P	Littelfuse Inc.	LT	Active	Tape & Reel	220 V	140 V / 180 V	2.5 kA	22 J	-55°C to 85°C	ROHS3 Compliant
V140LT5PX2855	Littelfuse Inc.	LT	Active	Tape & Reel	220 V	140 V / 180 V	2.5 kA	22 J	-55°C to 85°C	ROHS3 Compliant
V140LU5P	Littelfuse Inc.	LU	Active	Tape & Reel	220 V	140 V / 180 V	2.5 kA	22 J	-55°C to 85°C	ROHS3 Compliant
V140LU5PX2855	Littelfuse Inc.	LU	Active	Tape & Reel	220 V	140 V / 180 V	2.5 kA	22 J	-55°C to 85°C	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts are manufactured by Littelfuse Inc. and maintain full ROHS3 compliance with MSL rating of 1 (Unlimited moisture sensitivity level). The primary distinction between the main part V140LS5 and its substitutes is product status: the original part is obsolete, while all substitute options carry active status.

V140LS5P represents the direct equivalent with identical series designation (LS) and active availability. The X2855 variants (V140LS5PX2855, V140LT5PX2855, V140LU5PX2855) are parametrically equivalent with identical electrical specifications. Parts designated with series LT and LU (V140LT5P, V140LT5PX2855, V140LU5P, V140LU5PX2855) are functionally interchangeable alternatives within the same product family.

All substitute parts are supplied in tape & reel packaging format, suitable for automated assembly processes. For applications requiring bulk packaging, V140LS5P in tape & reel format remains the closest active equivalent to the original V140LS5.

Frequently Asked Questions (FAQ)

Q: Can V140LS5 be directly replaced with V140LS5P?

A: Yes. V140LS5P is the direct active equivalent with identical electrical parameters, mechanical configuration, and series designation. The only difference is packaging format (tape & reel versus bulk) and active product status.

Q: What is the difference between V140LS5P and V140LT5P?

A: Both parts are parametrically equivalent with identical voltage ratings, surge current capacity, energy absorption, and physical dimensions. The series designation differs (LS versus LT), but all electrical and mechanical specifications remain identical. Both are active products supplied in tape & reel packaging.

Q: Are the X2855 variants functionally identical to standard variants?

A: Yes. Parts designated with X2855 suffix maintain all electrical specifications, voltage ratings, surge current capacity, and energy absorption values identical to their non-X2855 counterparts. The suffix indicates a specific manufacturing or packaging configuration but does not alter functional performance.

Q: Can these varistors be used interchangeably in through-hole PCB applications?

A: Yes. All listed parts share identical through-hole mounting type and disc 10mm package configuration. They are mechanically and electrically interchangeable in PCB designs originally specified for V140LS5.

Q: What is the operating temperature range for all substitute parts?

A: All substitute parts operate across the identical temperature range of -55°C to 85°C, matching the original V140LS5 specification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification with MSL rating of 1 (Unlimited), identical to the original part.

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