V300LS20APX2855 Equivalent & Substitute Parts

Part Overview

The V300LS20APX2855 is a 470 V, 4.5 kA disc varistor manufactured by Littelfuse Inc., designed for transient voltage suppression in through-hole applications. This component operates across a temperature range of -55°C to 85°C and is ROHS3 compliant. The part is currently in active production status. Substitute parts are identified when packaging format differs while maintaining identical electrical and mechanical specifications, enabling procurement flexibility without circuit redesign.

Key Parameters

Parameter	Value
Varistor Voltage (Typical)	470 V
Varistor Voltage Range	423 V (Min) – 517 V (Max)
Current - Surge	4.5 kA
Energy Absorption	77 J
Maximum AC Volts	300 V
Maximum DC Volts	405 V
Capacitance @ 1 MHz	400 pF
Operating Temperature Range	-55°C to 85°C
Mounting Type	Through Hole
Package / Case	Disc 14mm
Number of Circuits	1

Substitute Part Grouping Explanation

Substitute parts for the V300LS20APX2855 are classified as parametric equivalents. Substitution is valid when all electrical parameters (varistor voltage range, surge current, energy absorption, capacitance, and temperature rating) remain identical, and the mechanical form factor (through-hole disc 14mm) is preserved. The primary differentiator among substitute parts is packaging format: the main part is supplied in Tape & Reel (TR) format, while substitute parts are available in Cut Tape (CT) format. This distinction affects procurement and automated assembly processes but does not alter component performance or circuit compatibility.

Key parameters determining substitution validity:

Varistor Voltage (Typ): 470 V
Current - Surge: 4.5 kA
Energy: 77 J
Mounting Type: Through Hole
Package / Case: Disc 14mm
Operating Temperature: -55°C to 85°C

Parameter Comparison

Parameter	V300LS20APX2855	V300LS20AP	V300LT20AP
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)	Transient Voltage Suppressors (TVS)	Transient Voltage Suppressors (TVS)
Varistor Voltage (Min)	423 V	423 V	423 V
Varistor Voltage (Typ)	470 V	470 V	470 V
Varistor Voltage (Max)	517 V	517 V	517 V
Current - Surge	4.5 kA	4.5 kA	4.5 kA
Energy	77 J	77 J	77 J
Number of Circuits	1	1	1
Capacitance @ 1 MHz	400 pF	400 pF	400 pF
Maximum AC Volts	300 V	300 V	300 V
Maximum DC Volts	405 V	405 V	405 V
Operating Temperature	-55°C to 85°C	-55°C to 85°C	-55°C to 85°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Disc 14mm	Disc 14mm	Disc 14mm
Packaging Format	Tape & Reel (TR)	Cut Tape (CT)	Cut Tape (CT)
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All three parts—V300LS20APX2855, V300LS20AP, and V300LT20AP—are active production components from Littelfuse Inc. with identical electrical specifications and full ROHS3 compliance. Selection between these parts is determined by packaging requirements and supply chain considerations rather than electrical performance.

V300LS20APX2855 (Tape & Reel format) is suitable for high-volume automated assembly operations where reel-fed component placement equipment is utilized. V300LS20AP and V300LT20AP (Cut Tape format) accommodate manual assembly, lower-volume production runs, or procurement scenarios where reel quantities exceed immediate requirements. All parts maintain equivalent circuit performance and are interchangeable at the board level.

Frequently Asked Questions (FAQ)

Q: Can V300LS20AP or V300LT20AP be used as direct replacements for V300LS20APX2855 in circuit design?

A: Yes. All three parts share identical electrical parameters (470 V typical varistor voltage, 4.5 kA surge current, 77 J energy absorption) and mechanical form factor (through-hole disc 14mm). Circuit performance is equivalent. Substitution is valid from an electrical standpoint.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) format supplies components on continuous reels suitable for automated pick-and-place assembly equipment. Cut Tape (CT) format provides components on tape segments, typically used for manual assembly or lower-volume applications. Both formats contain identical components; packaging format only affects handling and assembly methodology.

Q: Are there any compliance or certification differences between these parts?

A: No. All three parts carry identical certifications: ROHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), and REACH Unaffected status. Regulatory and environmental compliance is equivalent across all three part numbers.

Q: Which part should be selected for new designs?

A: Selection depends on manufacturing process. For automated assembly with reel-fed equipment, V300LS20APX2855 is appropriate. For manual assembly or lower-volume production, V300LS20AP or V300LT20AP are suitable. Electrical performance and reliability are identical.

Q: Is there a difference between the LS and LT series designations?

A: The series designation (LS versus LT) reflects internal Littelfuse product line categorization but does not indicate electrical or performance differences for these specific part numbers. Both V300LS20AP and V300LT20AP maintain identical specifications to the main part.

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