V275LS10 Equivalent & Substitute Parts

Part Overview

The V275LS10 is a 430 V, 2.5 kA disc varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole applications. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance requirements. Substitute parts maintain identical electrical and mechanical specifications while offering active product status and improved availability.

Key Parameters

Parameter	Value
Varistor Voltage (Typical)	430 V
Current - Surge	2.5 kA
Maximum AC Volts	275 V
Maximum DC Volts	369 V
Energy	45 J
Operating Temperature Range	-55°C to 85°C
Mounting Type	Through Hole
Package / Case	Disc 10mm
Number of Circuits	1
Capacitance @ 1 MHz	200 pF

Substitute Part Grouping Explanation

All substitute parts for V275LS10 are parametrically equivalent, sharing identical electrical ratings and mechanical specifications. Substitution is determined by the following key parameters:

Varistor voltage range: 387 V (Min) to 473 V (Max), with 430 V typical
Surge current rating: 2.5 kA
Energy dissipation: 45 J
Package form factor: Disc 10mm through-hole
Operating temperature: -55°C to 85°C
RoHS3 compliance and MSL Level 1

Substitute parts differ only in series designation (LS, LT, LU) and packaging format (Cut Tape or Tape & Reel). These differences do not affect electrical performance or mechanical compatibility in the application circuit.

Parameter Comparison

Part Number	Manufacturer	Series	Packaging	Product Status	Varistor Voltage (Typ)	Surge Current	Energy	Operating Temp	RoHS Status
V275LS10	Littelfuse Inc.	LS	Disc 10mm	Obsolete	430 V	2.5 kA	45 J	-55°C to 85°C	ROHS3 Compliant
V275LS10P	Littelfuse Inc.	LS	Cut Tape (CT)	Active	430 V	2.5 kA	45 J	-55°C to 85°C	ROHS3 Compliant
V275LS10PX2855	Littelfuse Inc.	LS	Tape & Reel (TR)	Active	430 V	2.5 kA	45 J	-55°C to 85°C	ROHS3 Compliant
V275LT10P	Littelfuse Inc.	LT	Tape & Reel (TR)	Active	430 V	2.5 kA	45 J	-55°C to 85°C	ROHS3 Compliant
V275LT10PX2855	Littelfuse Inc.	LT	Tape & Reel (TR)	Active	430 V	2.5 kA	45 J	-55°C to 85°C	ROHS3 Compliant
V275LU10P	Littelfuse Inc.	LU	Cut Tape (CT)	Active	430 V	2.5 kA	45 J	-55°C to 85°C	ROHS3 Compliant
V275LU10PX2855	Littelfuse Inc.	LU	Tape & Reel (TR)	Active	430 V	2.5 kA	45 J	-55°C to 85°C	ROHS3 Compliant

Engineering Selection Recommendations

All substitute parts maintain full electrical and mechanical compatibility with V275LS10 applications. Selection should be based on the following criteria:

Product Status: All substitute parts carry Active product status, ensuring long-term availability and manufacturing support compared to the obsolete V275LS10.

Compliance: All substitute parts are ROHS3 compliant with MSL Level 1 (Unlimited moisture sensitivity), meeting regulatory requirements for electronics manufacturing.

Packaging Considerations: Choose packaging format based on assembly requirements:

Cut Tape (CT) format: V275LS10P, V275LU10P for manual or semi-automated placement
Tape & Reel (TR) format: V275LS10PX2855, V275LT10P, V275LT10PX2855, V275LU10PX2855 for high-volume automated assembly

Series Selection: LS, LT, and LU series designations do not affect electrical performance. Selection may be based on internal manufacturing or supply chain preferences.

Frequently Asked Questions (FAQ)

Q: Can V275LS10 be directly replaced with any of the listed substitutes? A: Yes. All substitute parts are parametrically equivalent with identical electrical ratings (430 V typical, 2.5 kA surge current, 45 J energy) and mechanical specifications (Disc 10mm through-hole package). Direct substitution is electrically and mechanically compatible.

Q: What is the difference between Cut Tape and Tape & Reel packaging? A: Cut Tape (CT) packaging is supplied in individual strips suitable for manual or semi-automated pick-and-place operations. Tape & Reel (TR) packaging is wound on reels for high-speed automated assembly lines. Electrical performance is identical; packaging choice depends on assembly process requirements.

Q: Why are there multiple series designations (LS, LT, LU) with identical specifications? A: Series designations reflect internal Littelfuse manufacturing classifications. All three series maintain identical electrical and mechanical parameters for this voltage and current rating. Selection between series is based on supply availability or internal procurement standards.

Q: Are all substitutes ROHS3 compliant? A: Yes. All substitute parts listed are ROHS3 compliant with MSL Level 1 rating, meeting environmental and regulatory requirements for electronics manufacturing and assembly.

Q: Which substitute part offers the best availability? A: V275LS10P and V275LU10P offer the highest inventory levels (7,735 and 6,159 units respectively) among the listed substitutes, providing optimal availability for procurement planning.

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