V275LU40AP Equivalent & Substitute Parts

Part Overview

The V275LU40AP is a 430 V, 6.5 kA Transient Voltage Suppressor (TVS) varistor manufactured by Littelfuse in a through-hole disc 20mm package format. This component is designed for transient overvoltage protection in electronic circuits and is currently in active production status. Substitute parts are identified based on identical electrical performance parameters and mechanical compatibility, enabling procurement flexibility when the primary part number is unavailable or when alternative packaging formats are acceptable for system integration.

Key Parameters

Parameter	Value
Varistor Voltage (Typical)	430 V
Current - Surge	6.5 kA
Maximum AC Volts	275 V
Maximum DC Volts	369 V
Energy	140 J
Number of Circuits	1
Capacitance @ 1 MHz	900 pF
Operating Temperature Range	-55°C to 85°C
Package / Case	Disc 20mm
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitute parts for the V275LU40AP are qualified based on the following electrical and mechanical parameters:

Varistor voltage range: 387 V (minimum) to 473 V (maximum), with 430 V typical
Surge current rating: 6.5 kA
Energy dissipation: 140 J
AC/DC voltage ratings: 275 V AC, 369 V DC
Capacitance: 900 pF @ 1 MHz
Operating temperature: -55°C to 85°C
Package format: Disc 20mm through-hole
Number of circuits: 1
Compliance: ROHS3, REACH Unaffected

The identified substitutes maintain identical electrical performance and mechanical form factor. Differences are limited to packaging format (tape & reel versus cut tape) and internal series designation, which do not affect functional equivalence in circuit applications.

Parameter Comparison

Parameter	V275LU40AP	V275LS40AP	V275LT40AP
Manufacturer	Littelfuse	Littelfuse Inc.	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)	Transient Voltage Suppressors (TVS)	Transient Voltage Suppressors (TVS)
Packaging	Tape & Reel (TR)	Cut Tape (CT)	Cut Tape (CT)
Series	LU	LS	LT
Product Status	Active	Active	Active
Maximum AC Volts	275 V	275 V	275 V
Maximum DC Volts	369 V	369 V	369 V
Varistor Voltage (Min)	387 V	387 V	387 V
Varistor Voltage (Typ)	430 V	430 V	430 V
Varistor Voltage (Max)	473 V	473 V	473 V
Current - Surge	6.5 kA	6.5 kA	6.5 kA
Energy	140 J	140 J	140 J
Number of Circuits	1	1	1
Capacitance @ 1 MHz	900 pF	900 pF	900 pF
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 20mm	Disc 20mm	Disc 20mm
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
ECCN	EAR99	EAR99	EAR99
HTSUS	8533.40.4000	8533.40.4000	8533.40.4000

Engineering Selection Recommendations

All three parts—V275LU40AP, V275LS40AP, and V275LT40AP—are active production components from Littelfuse with identical electrical specifications and mechanical compatibility. Selection between these parts is determined by packaging and procurement requirements:

V275LU40AP: Tape & Reel packaging, suitable for automated assembly processes
V275LS40AP: Cut Tape packaging, suitable for manual assembly or small-quantity procurement
V275LT40AP: Cut Tape packaging, suitable for manual assembly or small-quantity procurement

All parts maintain ROHS3 compliance, REACH unaffected status, and identical performance characteristics across the specified operating temperature range. Component selection should be based on assembly methodology, inventory management practices, and supply chain availability rather than functional performance differences.

Frequently Asked Questions (FAQ)

Q: Can V275LS40AP or V275LT40AP be used as direct replacements for V275LU40AP?

A: Yes. All three parts share identical electrical parameters, including varistor voltage (430 V typical), surge current rating (6.5 kA), energy dissipation (140 J), and operating temperature range (-55°C to 85°C). The only difference is packaging format (tape & reel versus cut tape), which does not affect functional performance in circuit applications.

Q: What is the difference between the packaging formats?

A: V275LU40AP is supplied in Tape & Reel (TR) format, optimized for high-volume automated assembly. V275LS40AP and V275LT40AP are supplied in Cut Tape (CT) format, suitable for lower-volume or manual assembly processes. Both formats contain the identical component.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. V275LU40AP, V275LS40AP, and V275LT40AP are all ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements for electronic component manufacturing and use.

Q: Do the series designations (LU, LS, LT) indicate functional differences?

A: No. The series designations reflect internal Littelfuse product line organization and packaging format classification. All three series maintain identical electrical performance and mechanical specifications for this varistor voltage and surge current rating.

Q: What inventory levels are available for each part?

A: V275LU40AP: 1063 pieces; V275LS40AP: 2024 pieces; V275LT40AP: 1260 pieces. Availability may vary based on current procurement status and supply chain conditions.

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