V150LT5 Equivalent & Substitute Parts

Part Overview

The V150LT5 is a 240 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 design support and procurement. The varistor provides overvoltage protection with a nominal varistor voltage of 240 V and energy absorption capacity of 25 J, suitable for industrial and commercial voltage suppression circuits.

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	2.5 kA
Energy	25 J
Number of Circuits	1
Capacitance @ 1 MHz	360 pF
Operating Temperature Range	-55°C to 85°C
Mounting Type	Through Hole
Package / Case	Disc 10mm
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the V150LT5 is determined by strict electrical and mechanical parameter matching across all Littelfuse varistor alternatives. The following criteria establish valid substitution:

Electrical Parameters (Must Match):

Maximum AC Volts: 150 V
Maximum DC Volts: 200 V
Varistor Voltage (Typical): 240 V
Varistor Voltage Range: 216 V – 264 V
Current - Surge: 2.5 kA
Energy: 25 J
Capacitance @ 1 MHz: 360 pF
Operating Temperature Range: -55°C to 85°C

Mechanical Parameters (Must Match):

Mounting Type: Through Hole
Package / Case: Disc 10mm
Number of Circuits: 1

Allowed Variation:

Packaging format (Cut Tape, Tape & Reel, or bulk) does not affect electrical or mechanical compatibility
Series designation (LT, LS, LU) does not affect performance when all electrical parameters are identical
Product status transition from Obsolete to Active is acceptable for substitution purposes

All seven substitute part numbers listed below meet these criteria and are direct functional equivalents to the V150LT5.

Parameter Comparison

Part Number	Manufacturer	Series	Product Status	Packaging	Max AC (V)	Max DC (V)	Varistor Voltage Typ (V)	Surge Current (kA)	Energy (J)	Capacitance @ 1 MHz (pF)	Temp Range (°C)	RoHS Status
V150LT5	Littelfuse Inc.	LT	Obsolete	—	150	200	240	2.5	25	360	-55 to 85	ROHS3
V150LS5P	Littelfuse Inc.	LS	Active	Tape & Reel	150	200	240	2.5	25	360	-55 to 85	ROHS3
V150LS5PX1347	Littelfuse Inc.	LS	Active	Tape & Reel	150	200	240	2.5	25	360	-55 to 85	ROHS3
V150LS5PX2855	Littelfuse Inc.	LS	Active	Tape & Reel	150	200	240	2.5	25	360	-55 to 85	ROHS3
V150LT5P	Littelfuse Inc.	LT	Active	Cut Tape	150	200	240	2.5	25	360	-55 to 85	ROHS3
V150LT5PX2855	Littelfuse Inc.	LT	Active	Tape & Reel	150	200	240	2.5	25	360	-55 to 85	ROHS3
V150LU5P	Littelfuse Inc.	LU	Active	Tape & Reel	150	200	240	2.5	25	360	-55 to 85	ROHS3
V150LU5PX2855	Littelfuse	LU	Active	Tape & Reel	150	200	240	2.5	25	360	-55 to 85	ROHS3

Engineering Selection Recommendations

All substitute parts listed are active production components from Littelfuse Inc., providing long-term availability compared to the obsolete V150LT5. Selection among substitutes should be based on procurement requirements and packaging format:

For bulk or manual assembly: V150LT5P (Cut Tape) offers the same series designation as the original part with active product status.

For automated assembly: V150LS5P, V150LS5PX1347, V150LS5PX2855, V150LT5PX2855, V150LU5P, or V150LU5PX2855 (all Tape & Reel format) are suitable for pick-and-place equipment.

All substitute parts maintain ROHS3 compliance and identical electrical performance within the specified varistor voltage range of 216 V to 264 V. The X-suffix variants (X1347, X2855) indicate internal manufacturing lot or supplier tracking codes and do not affect electrical or mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts interchangeably with the V150LT5?

A: Yes. All listed substitute parts meet identical electrical specifications (150 V AC maximum, 200 V DC maximum, 240 V typical varistor voltage, 2.5 kA surge current, 25 J energy) and mechanical requirements (through-hole mounting, 10mm disc package, single circuit). Packaging format differences do not affect circuit performance.

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

A: Series designation reflects internal Littelfuse product line classification but does not indicate electrical or mechanical differences when all parameters are identical. All three series are valid substitutes for the V150LT5 when specifications match.

Q: Are the X-suffix variants (X1347, X2855) different from the base part numbers?

A: No. The X-suffix indicates internal manufacturing or supplier tracking codes and does not affect electrical performance, mechanical fit, or compliance status. These variants are functionally equivalent to their base part numbers.

Q: Is the transition from Obsolete to Active product status important for my application?

A: Active product status ensures long-term availability and continued manufacturing support. Substituting an obsolete part with an active equivalent provides supply chain security for future production runs and maintenance requirements.

Q: Can I mix packaging formats in the same assembly?

A: Packaging format (Cut Tape, Tape & Reel, or bulk) affects procurement and assembly processes but not electrical or mechanical performance. Format selection should align with your assembly equipment and inventory management practices.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the environmental and regulatory status of the original V150LT5.

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