Littelfuse V510LS80B Equivalent & Substitute Parts

Part Overview

The Littelfuse V510LS80B is a 799 V disc varistor rated for 6.5 kA surge current in a 20mm through-hole package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The varistor provides transient voltage suppression across a single circuit with 190 J energy absorption capability and operates across the temperature range of -55°C to 85°C.

Key Parameters

Parameter	Value
Maximum AC Volts	510 V
Maximum DC Volts	675 V
Varistor Voltage (Typical)	799 V
Varistor Voltage Range	738 V – 860 V
Current - Surge	6.5 kA
Energy Absorption	190 J
Number of Circuits	1
Capacitance @ 1 MHz	500 pF
Operating Temperature Range	-55°C to 85°C
Mounting Type	Through Hole
Package / Case	Disc 20mm
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the V510LS80B is determined by electrical and mechanical parameter equivalence. All substitute parts maintain identical electrical specifications: 510 V maximum AC, 675 V maximum DC, 799 V typical varistor voltage (738–860 V range), 6.5 kA surge current, and 190 J energy absorption. All substitutes retain the same through-hole mounting configuration with 20mm disc packaging, operating temperature range, and RoHS3 compliance.

Substitutes are grouped into two categories:

Direct Packaging Equivalent: V510LS80BP differs only in packaging format (Tape & Reel vs. bulk), maintaining the identical LS series designation and all electrical parameters.

Series Variants: Parts designated V510LT80BP, V510LT80BPX10, V510LT80BPX2855, V510LU80BP, V510LU80BPX10, and V510LU80BPX2855 represent alternative series (LT and LU) with identical electrical and mechanical specifications. The series designation and packaging suffix (blank, X10, or X2855) indicate manufacturing or distribution variants, not functional differences.

Parameter Comparison

Part Number	Series	Product Status	Max AC (V)	Max DC (V)	Varistor Voltage Typ (V)	Surge Current (kA)	Energy (J)	Packaging	RoHS
V510LS80B	LS	Obsolete	510	675	799	6.5	190	Bulk	ROHS3
V510LS80BP	LS	Active	510	675	799	6.5	190	Tape & Reel	ROHS3
V510LS80BPX10	LS	Active	510	675	799	6.5	190	Tape & Reel	ROHS3
V510LS80BPX2855	LS	Active	510	675	799	6.5	190	Tape & Reel	ROHS3
V510LT80BP	LT	Active	510	675	799	6.5	190	Tape & Reel	ROHS3
V510LT80BPX10	LT	Active	510	675	799	6.5	190	Tape & Reel	ROHS3
V510LT80BPX2855	LT	Active	510	675	799	6.5	190	Tape & Reel	ROHS3
V510LU80BP	LU	Active	510	675	799	6.5	190	Tape & Reel	ROHS3
V510LU80BPX10	LU	Active	510	675	799	6.5	190	Tape & Reel	ROHS3
V510LU80BPX2855	LU	Active	510	675	799	6.5	190	Tape & Reel	ROHS3

Engineering Selection Recommendations

All listed substitute parts are active products with current manufacturing status, eliminating obsolescence risk associated with the V510LS80B. All substitutes maintain ROHS3 compliance and identical electrical performance within the specified varistor voltage range of 738–860 V.

Selection between LS, LT, and LU series variants should be based on procurement availability and supply chain requirements, as all three series deliver equivalent electrical and mechanical function. Packaging format selection (standard Tape & Reel vs. X10 or X2855 variants) depends on assembly process requirements and order quantity thresholds.

Frequently Asked Questions (FAQ)

Q: Can V510LT80BP or V510LU80BP be used as direct replacements for V510LS80B?

A: Yes. All three series (LS, LT, LU) deliver identical electrical specifications: 510 V maximum AC, 675 V maximum DC, 799 V typical varistor voltage, 6.5 kA surge current, and 190 J energy absorption. The series designation does not affect functional performance in circuit applications.

Q: What is the difference between V510LS80BP and V510LS80BPX10?

A: Both parts are electrically and mechanically identical. The packaging suffix indicates distribution or manufacturing variants. Selection depends on assembly equipment compatibility and order quantity requirements.

Q: Is the V510LS80B still available?

A: The V510LS80B is classified as obsolete. Active equivalent parts include V510LS80BP, V510LT80BP, and V510LU80BP, all of which are currently in production.

Q: Do all substitutes maintain the same through-hole 20mm disc package?

A: Yes. All substitute parts retain the identical through-hole mounting configuration and 20mm disc package geometry, ensuring mechanical compatibility with existing PCB layouts.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance status, meeting current environmental and regulatory requirements.

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