Littelfuse V230LT4 360V 1.2kA Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The Littelfuse V230LT4 is a 360V 1.2kA disc varistor 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. Active alternatives with identical electrical and mechanical specifications are available from Littelfuse's current product portfolio, ensuring design continuity without performance compromise.

Key Parameters

Parameter	Value
Maximum AC Volts	230 V
Maximum DC Volts	300 V
Varistor Voltage (Typical)	360 V
Varistor Voltage Range	324 V – 396 V
Current - Surge	1.2 kA
Energy Absorption	20 J
Number of Circuits	1
Capacitance @ 1 MHz	100 pF
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 V230LT4 is determined by strict equivalence across all electrical and mechanical parameters. The following criteria define valid substitutes:

Maximum AC Volts: 230 V
Maximum DC Volts: 300 V
Varistor Voltage (Typical): 360 V with range 324 V – 396 V
Current - Surge: 1.2 kA
Energy Absorption: 20 J
Number of Circuits: 1
Capacitance @ 1 MHz: 100 pF
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)

All substitute parts listed meet these exact specifications. Differences in series designation (LT, LS, LU) and packaging format (bulk vs. Tape & Reel) do not affect electrical performance or mechanical compatibility.

Parameter Comparison

Part Number	Manufacturer	Series	Product Status	Packaging	Max AC (V)	Max DC (V)	Varistor Voltage Typ (V)	Surge Current (kA)	Energy (J)	Operating Temp (°C)	RoHS	Inventory (Pcs)
V230LT4	Littelfuse Inc.	LT	Obsolete	Bulk	230	300	360	1.2	20	-55 to 85	ROHS3	806
V230LT4P	Littelfuse Inc.	LT	Active	Tape & Reel	230	300	360	1.2	20	-55 to 85	ROHS3	983
V230LT4PX2855	Littelfuse Inc.	LT	Active	Tape & Reel	230	300	360	1.2	20	-55 to 85	ROHS3	1031
V230LS4P	Littelfuse Inc.	LS	Active	Tape & Reel	230	300	360	1.2	20	-55 to 85	ROHS3	719
V230LS4PX2855	Littelfuse Inc.	LS	Active	Tape & Reel	230	300	360	1.2	20	-55 to 85	ROHS3	648
V230LU4P	Littelfuse Inc.	LU	Active	Tape & Reel	230	300	360	1.2	20	-55 to 85	ROHS3	862
V230LU4PX2855	Littelfuse Inc.	LU	Active	Tape & Reel	230	300	360	1.2	20	-55 to 85	ROHS3	1067

Engineering Selection Recommendations

All listed substitute parts are manufactured by Littelfuse Inc. and maintain full electrical and mechanical equivalence to the V230LT4. Selection between active alternatives should be based on the following factors:

Product Status: The V230LT4 is obsolete. All substitute parts carry active product status, ensuring long-term availability and continued manufacturer support.

Compliance & Certifications: All substitute parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), matching the original part's environmental and regulatory requirements.

Packaging Considerations: The V230LT4 is supplied in bulk packaging. Active substitutes are available in Tape & Reel (TR) format, which is standard for automated assembly processes. For manual assembly or low-volume applications, bulk packaging may be sourced through alternative channels.

Series Variants: The LT, LS, and LU series designations represent different product lines within Littelfuse's varistor portfolio. All three series meet identical electrical specifications for this voltage and current rating.

Inventory Availability: All substitute parts maintain adequate stock levels, with V230LT4PX2855 and V230LU4PX2855 offering the highest inventory positions (1031 and 1067 units respectively).

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for the V230LT4?

A: Yes. All listed substitute parts are electrically and mechanically equivalent. They share identical voltage ratings (360V typical), surge current capacity (1.2 kA), energy absorption (20 J), operating temperature range (-55°C to 85°C), and physical package (Disc 7mm through-hole). The primary difference is product status (active vs. obsolete) and packaging format.

Q: What is the difference between the LT, LS, and LU series?

A: Series designation indicates different product lines within Littelfuse's varistor portfolio. For the 360V 1.2kA specification, all three series are electrically identical. Selection between series is based on availability, packaging preference, and supply chain requirements rather than performance differences.

Q: Why are some parts listed with "PX2855" suffix?

A: The PX2855 suffix indicates a specific packaging or manufacturing variant within the Tape & Reel format. This does not affect electrical performance or mechanical compatibility. Both standard (P) and PX2855 variants are functionally equivalent.

Q: Is Tape & Reel packaging compatible with my through-hole assembly process?

A: Tape & Reel packaging is standard for automated pick-and-place assembly. For manual assembly or low-volume production, components can be removed from tape and used identically to bulk-packaged parts. The physical component remains unchanged.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed carry ROHS3 compliance certification, matching the environmental and regulatory requirements of the original V230LT4.

Q: Which substitute part should I select for new designs?

A: For new designs, select any active product variant (V230LT4P, V230LT4PX2855, V230LS4P, V230LS4PX2855, V230LU4P, or V230LU4PX2855) based on packaging preference and supply chain availability. All are electrically and mechanically equivalent with confirmed long-term manufacturer support.

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