V150LT2 Equivalent & Substitute Parts

Part Overview

The V150LT2 is a 240 V, 1.2 kA disc varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole applications. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. Substitute parts maintain identical electrical and mechanical specifications while offering active product status and improved availability.

Key Parameters

Parameter	Value
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 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 V150LT2 is determined by strict equivalence across all electrical parameters: maximum AC/DC voltage ratings, varistor voltage range (216 V – 264 V), surge current capacity (1.2 kA), energy rating (13 J), and thermal operating range (-55°C to 85°C). Mechanical compatibility is ensured through identical mounting type (through hole) and package form factor (disc 7mm). All substitute parts are manufactured by Littelfuse Inc. and maintain ROHS3 compliance and MSL 1 rating. Substitutes differ only in series designation (LT, LS, LU) and packaging format (cut tape or tape & reel), which do not affect electrical performance or mechanical fit.

Parameter Comparison

Part Number	Series	Packaging	Product Status	Max AC (V)	Max DC (V)	Varistor Voltage Typ (V)	Surge Current (kA)	Energy (J)	Operating Temp (°C)	Inventory (Pcs)
V150LT2	LT	Disc 7mm	Obsolete	150	200	240	1.2	13	-55 to 85	950
V150LS2P	LS	Cut Tape (CT)	Active	150	200	240	1.2	13	-55 to 85	10143
V150LS2PX1347	LS	Tape & Reel (TR)	Active	150	200	240	1.2	13	-55 to 85	898
V150LS2PX2855	LS	Tape & Reel (TR)	Active	150	200	240	1.2	13	-55 to 85	634
V150LT2P	LT	Cut Tape (CT)	Active	150	200	240	1.2	13	-55 to 85	8912
V150LT2PX2855	LT	Tape & Reel (TR)	Active	150	200	240	1.2	13	-55 to 85	1078
V150LU2P	LU	Tape & Reel (TR)	Active	150	200	240	1.2	13	-55 to 85	922
V150LU2PX2855	LU	Tape & Reel (TR)	Active	150	200	240	1.2	13	-55 to 85	1133

Engineering Selection Recommendations

All substitute parts are active products with ROHS3 compliance and REACH unaffected status, providing regulatory continuity for new designs and production. V150LS2P offers the highest inventory availability (10143 pcs) in cut tape packaging, suitable for manual assembly or low-volume production. V150LT2P maintains the original LT series designation in active status with substantial inventory (8912 pcs) and cut tape format, providing direct series continuity. Tape & reel variants (V150LS2PX1347, V150LS2PX2855, V150LT2PX2855, V150LU2P, V150LU2PX2855) are specified for automated pick-and-place assembly operations. Selection between series variants (LT, LS, LU) is determined by assembly process requirements and packaging logistics, as all maintain identical electrical performance and mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can V150LS2P be used as a direct replacement for V150LT2? A: Yes. V150LS2P is a parametric equivalent with identical electrical specifications (240 V typical varistor voltage, 1.2 kA surge current, 13 J energy) and mechanical form factor (disc 7mm, through hole). The difference is series designation (LS vs. LT) and packaging format (cut tape vs. disc). Electrical performance and circuit compatibility are unchanged.

Q: What is the difference between cut tape and tape & reel packaging? A: Cut tape (CT) packaging is supplied as individual components on carrier tape, suitable for manual assembly or low-volume pick-and-place operations. Tape & reel (TR) packaging supplies components on continuous reel format, optimized for high-speed automated assembly. Electrical and mechanical specifications are identical; packaging selection depends on assembly process capability.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All substitute parts listed (V150LS2P, V150LS2PX1347, V150LS2PX2855, V150LT2P, V150LT2PX2855, V150LU2P, V150LU2PX2855) are ROHS3 compliant with MSL 1 rating, meeting current environmental and regulatory requirements.

Q: Why is V150LT2 marked as obsolete? A: V150LT2 is classified as obsolete, indicating discontinued production. Active equivalent parts ensure design continuity and procurement availability. Substitution to active variants is recommended for new designs and ongoing production support.

Q: Can I mix different series (LT, LS, LU) in the same circuit? A: Yes. All series variants maintain identical electrical parameters and mechanical compatibility. Series designation reflects internal manufacturing process differences that do not affect circuit performance. Mixed usage is electrically and mechanically valid.

Q: What inventory levels should I consider for procurement? A: V150LS2P offers the highest availability (10143 pcs), followed by V150LT2P (8912 pcs). For tape & reel formats, V150LU2PX2855 (1133 pcs) and V150LT2PX2855 (1078 pcs) provide adequate stock for automated assembly operations. Inventory levels are subject to change; verify current availability with supplier.

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