V150LS2 Equivalent & Substitute Parts

Part Overview

The V150LS2 is a 240 V, 1.2 kA disc varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole applications. This part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Littelfuse offers multiple active alternatives within the same electrical and mechanical specifications, differing primarily in series designation and packaging format.

Key Parameters

Parameter	Value
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Maximum AC Volts	150 V
Maximum DC Volts	200 V
Varistor Voltage (Typical)	240 V
Varistor Voltage Range	216 V – 264 V
Current - Surge	1.2 kA
Energy	13 J
Number of Circuits	1
Capacitance @ 1 MHz	150 pF
Operating Temperature	-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 for the V150LS2 is based on strict electrical and mechanical parameter matching. All substitute parts maintain identical specifications across the following critical parameters:

Maximum AC Volts: 150 V
Maximum DC Volts: 200 V
Varistor Voltage (Typical): 240 V
Varistor Voltage Range: 216 V – 264 V
Current - Surge: 1.2 kA
Energy: 13 J
Number of Circuits: 1
Capacitance @ 1 MHz: 150 pF
Operating Temperature: -55°C to 85°C
Mounting Type: Through Hole
Package / Case: Disc 7mm
RoHS Status: ROHS3 Compliant

Substitute parts differ only in series designation (LS, LT, LU) and packaging format (Cut Tape or Tape & Reel). All substitutes are active products with current manufacturing status, providing improved availability compared to the obsolete V150LS2.

Parameter Comparison

Part Number	Manufacturer	Series	Packaging	Status	Max AC (V)	Max DC (V)	Varistor Voltage Typ (V)	Surge Current (kA)	Energy (J)	Operating Temp (°C)	Package	RoHS
V150LS2	Littelfuse Inc.	LS	—	Obsolete	150	200	240	1.2	13	-55 to 85	Disc 7mm	ROHS3
V150LS2P	Littelfuse Inc.	LS	Cut Tape (CT)	Active	150	200	240	1.2	13	-55 to 85	Disc 7mm	ROHS3
V150LS2PX1347	Littelfuse Inc.	LS	Tape & Reel (TR)	Active	150	200	240	1.2	13	-55 to 85	Disc 7mm	ROHS3
V150LS2PX2855	Littelfuse Inc.	LS	Tape & Reel (TR)	Active	150	200	240	1.2	13	-55 to 85	Disc 7mm	ROHS3
V150LT2P	Littelfuse Inc.	LT	Cut Tape (CT)	Active	150	200	240	1.2	13	-55 to 85	Disc 7mm	ROHS3
V150LT2PX2855	Littelfuse Inc.	LT	Tape & Reel (TR)	Active	150	200	240	1.2	13	-55 to 85	Disc 7mm	ROHS3
V150LU2P	Littelfuse Inc.	LU	Tape & Reel (TR)	Active	150	200	240	1.2	13	-55 to 85	Disc 7mm	ROHS3
V150LU2PX2855	Littelfuse Inc.	LU	Tape & Reel (TR)	Active	150	200	240	1.2	13	-55 to 85	Disc 7mm	ROHS3

Engineering Selection Recommendations

All substitute parts are manufactured by Littelfuse Inc. and maintain full electrical and mechanical equivalence to the V150LS2. Selection among substitutes should be based on the following factors:

Product Status: All substitute parts carry Active status, ensuring current manufacturing support and long-term availability. The V150LS2 is obsolete and should be replaced in new designs.

Compliance: All substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental qualifications.

Packaging Considerations: Choose based on assembly requirements:

Cut Tape (CT) packaging: V150LS2P, V150LT2P
Tape & Reel (TR) packaging: V150LS2PX1347, V150LS2PX2855, V150LT2PX2855, V150LU2P, V150LU2PX2855

Series Variants: LS, LT, and LU series designations indicate internal design variations within Littelfuse's varistor portfolio. All three series are electrically equivalent for this voltage and current rating.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts as a direct replacement for V150LS2?

A: Yes. All listed substitutes are parametrically equivalent to the V150LS2 across all electrical and mechanical specifications. The primary differences are product status (active vs. obsolete), series designation, and packaging format. Selection depends on your assembly process and supply chain requirements.

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 assembly. Tape & Reel (TR) packaging is wound on reels for high-speed automated pick-and-place equipment. Both formats contain identical components; packaging choice depends on production volume and assembly equipment.

Q: Are the LS, LT, and LU series interchangeable?

A: For this voltage and current rating (240 V, 1.2 kA), the LS, LT, and LU series are electrically equivalent. Series designation reflects Littelfuse's internal product line organization. All three series meet the same electrical specifications and can be used interchangeably in circuit applications.

Q: Why is the V150LS2 marked as obsolete?

A: Littelfuse has transitioned this product to active series variants (LS, LT, LU) with improved manufacturing processes and packaging options. The obsolete status indicates the specific V150LS2 configuration is no longer in production, but functionally equivalent active alternatives are available.

Q: Do all substitutes have the same RoHS and moisture sensitivity ratings?

A: Yes. All substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity, matching the V150LS2 environmental specifications.

Q: Which substitute should I choose for new designs?

A: For new designs, select based on your assembly process: V150LS2P or V150LT2P for cut tape applications, or any Tape & Reel variant for automated assembly. All are active products with equivalent electrical performance.

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