V275LC40B Equivalent & Substitute Parts

Part Overview

The V275LC40B is a 421 V, 6.5 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 system support and new design implementations. The varistor provides single-circuit protection with a 20mm disc form factor and operates across a temperature range of -55°C to 85°C.

Substiute Parts

V275LC40B

Littelfuse Inc.In Stock: 784V275LC40B Datasheet

Current PartRFQ

V275LC40BP

Littelfuse Inc.In Stock: 2965V275LC40BP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the V275LC40B is determined by strict equivalence across the following critical parameters:

• Maximum AC Volts: 275 V
• Maximum DC Volts: 369 V
• Varistor Voltage (Typical): 421 V
• Current - Surge: 6.5 kA
• Energy: 140 J
• Number of Circuits: 1
• Mounting Type: Through Hole
• Package / Case: Disc 20mm
• Operating Temperature Range: -55°C to 85°C

The V275LC40BP is a direct equivalent that maintains all electrical and mechanical specifications while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

The V275LC40BP is the direct substitute for the V275LC40B. Both components are manufactured by Littelfuse Inc. and maintain identical electrical and mechanical specifications. The primary distinction is product status: the V275LC40B is obsolete while the V275LC40BP is active. Both parts are ROHS3 compliant and carry the same ECCN and HTSUS classifications. The V275LC40BP offers superior long-term availability and supply chain continuity for new designs and ongoing production requirements.

Frequently Asked Questions (FAQ)

Q: Can the V275LC40BP be used as a direct replacement for the V275LC40B?

A: Yes. The V275LC40BP is electrically and mechanically identical to the V275LC40B across all specified parameters, including voltage ratings, surge current capacity, energy dissipation, and physical form factor.

Q: What is the difference between the V275LC40B and V275LC40BP?

A: The primary difference is packaging and product status. The V275LC40B is supplied in tape packaging and is obsolete. The V275LC40BP is supplied in bulk packaging and maintains active product status with improved availability.

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

A: No. Both parts are ROHS3 compliant with identical ECCN and HTSUS classifications. Moisture sensitivity level is 1 (Unlimited) for both components.

Q: What are the critical parameters for substitution?

A: Substitution is valid when the following parameters match: maximum AC volts (275 V), maximum DC volts (369 V), varistor voltage typical (421 V), surge current (6.5 kA), energy rating (140 J), number of circuits (1), mounting type (through hole), package form factor (disc 20mm), and operating temperature range (-55°C to 85°C).

Q: Can these parts be used in new designs?

A: The V275LC40BP is recommended for new designs due to its active product status and ongoing manufacturer support. The V275LC40B should not be specified for new applications as it is obsolete.