V250LT2 Equivalent & Substitute Parts

Part Overview

The V250LT2 is a 410 V, 1.2 kA disc varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole applications. This component operates across a temperature range of -55°C to 85°C and is ROHS3 compliant with unlimited moisture sensitivity rating.

The V250LT2 is classified as obsolete. Equivalent and substitute parts from the Littelfuse LT, LA, LS, and LU series maintain identical electrical and mechanical specifications, enabling direct replacement in existing designs while providing access to active product status and improved supply availability.

Key Parameters

Parameter	Value
Varistor Voltage (Typical)	410 V
Varistor Voltage Range	369 V (Min) – 451 V (Max)
Maximum AC Voltage	250 V
Maximum DC Voltage	330 V
Current – Surge	1.2 kA
Energy Absorption	21 J
Capacitance @ 1 MHz	90 pF
Number of Circuits	1
Operating Temperature Range	-55°C to 85°C
Mounting Type	Through Hole
Package / Case	Disc 7mm
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the V250LT2 is determined by strict equivalence across all electrical parameters: varistor voltage range (369 V – 451 V typical 410 V), maximum AC/DC ratings (250 V AC, 330 V DC), surge current capacity (1.2 kA), energy absorption (21 J), and capacitance (90 pF @ 1 MHz). All substitute parts maintain identical mechanical specifications: through-hole mounting, disc 7mm package, and operating temperature range (-55°C to 85°C).

Substitute parts are grouped by product status and packaging configuration. Direct manufacturer substitutes include V250LT2P (Tape & Reel, Active status). Manufacturer-recommended alternatives include V250LA2P (Bulk packaging, Active status). Parametric equivalents across the LT, LS, and LU series provide additional sourcing options with varying packaging formats (Cut Tape, Tape & Reel) while maintaining full electrical and mechanical compatibility.

All substitute parts are ROHS3 compliant with MSL 1 rating and REACH unaffected status, ensuring regulatory and environmental compliance equivalent to the original component.

Parameter Comparison

Part Number	Manufacturer	Series	Product Status	Packaging	Varistor Voltage (Typ)	Max AC / DC Volts	Surge Current	Energy	Capacitance @ 1 MHz	Operating Temp	RoHS Status
V250LT2	Littelfuse Inc.	LT	Obsolete	Bulk	410 V	250 V / 330 V	1.2 kA	21 J	90 pF	-55°C to 85°C	ROHS3
V250LT2P	Littelfuse	LT	Active	Tape & Reel	410 V	250 V / 330 V	1.2 kA	21 J	90 pF	-55°C to 85°C	ROHS3
V250LA2P	Littelfuse Inc.	LA	Active	Bulk	410 V	250 V / 330 V	1.2 kA	21 J	90 pF	-55°C to 85°C	ROHS3
V250LS2P	Littelfuse Inc.	LS	Active	Cut Tape	410 V	250 V / 330 V	1.2 kA	21 J	90 pF	-55°C to 85°C	ROHS3
V250LS2PX2855	Littelfuse Inc.	LS	Active	Tape & Reel	410 V	250 V / 330 V	1.2 kA	21 J	90 pF	-55°C to 85°C	ROHS3
V250LT2PX2855	Littelfuse	LT	Active	Tape & Reel	410 V	250 V / 330 V	1.2 kA	21 J	90 pF	-55°C to 85°C	ROHS3
V250LU2P	Littelfuse Inc.	LU	Active	Tape & Reel	410 V	250 V / 330 V	1.2 kA	21 J	90 pF	-55°C to 85°C	ROHS3
V250LU2PX2855	Littelfuse Inc.	LU	Active	Tape & Reel	410 V	250 V / 330 V	1.2 kA	21 J	90 pF	-55°C to 85°C	ROHS3

Engineering Selection Recommendations

All substitute parts maintain full electrical and mechanical equivalence to the V250LT2. Selection among available alternatives is determined by product status and packaging requirements.

For new designs and production environments requiring active product status, V250LT2P, V250LA2P, V250LS2P, V250LS2PX2855, V250LT2PX2855, V250LU2P, and V250LU2PX2855 are all qualified alternatives. All substitute parts carry ROHS3 compliance and REACH unaffected status.

Packaging selection depends on procurement and assembly workflow: Tape & Reel formats (V250LT2P, V250LS2PX2855, V250LT2PX2855, V250LU2P, V250LU2PX2855) support automated assembly processes; Cut Tape (V250LS2P) and Bulk (V250LA2P) formats accommodate manual or semi-automated handling.

Frequently Asked Questions (FAQ)

Q: Can V250LT2 be directly replaced with V250LT2P?

A: Yes. V250LT2P is the direct manufacturer substitute with identical electrical specifications (410 V typical varistor voltage, 1.2 kA surge current, 21 J energy absorption) and mechanical configuration (through-hole, disc 7mm). The only difference is packaging format (Tape & Reel vs. Bulk) and active product status.

Q: What is the difference between V250LT2P, V250LS2P, and V250LU2P?

A: All three parts are parametric equivalents with identical electrical and mechanical specifications. The differences are series designation (LT, LS, LU) and packaging format. Series designation reflects internal Littelfuse product line organization but does not affect electrical performance or physical compatibility.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental and regulatory profile of the original V250LT2.

Q: Which substitute should be selected for automated assembly?

A: Parts supplied in Tape & Reel packaging (V250LT2P, V250LS2PX2855, V250LT2PX2855, V250LU2P, V250LU2PX2855) are suitable for automated pick-and-place assembly. Cut Tape (V250LS2P) and Bulk (V250LA2P) formats are appropriate for manual or semi-automated processes.

Q: Is there any electrical difference between the LT, LS, and LU series?

A: No. All parts within these series maintain identical electrical parameters: 410 V typical varistor voltage (369 V – 451 V range), 250 V maximum AC, 330 V maximum DC, 1.2 kA surge current, 21 J energy absorption, and 90 pF capacitance at 1 MHz.

Q: Can V250LT2 be used in new production designs?

A: No. V250LT2 is classified as obsolete. For new designs, select from active alternatives: V250LT2P, V250LA2P, V250LS2P, V250LS2PX2855, V250LT2PX2855, V250LU2P, or V250LU2PX2855.

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