V275LA40C Equivalent & Substitute Parts

Part Overview

The V275LA40C is a 430 V, 10 kA Transient Voltage Suppressor (TVS) varistor manufactured by Littelfuse in a through-hole disc configuration (20mm). This component is classified as obsolete, making identification of suitable substitutes essential for ongoing system support and component procurement.

The varistor operates across a temperature range of -55°C to 85°C and provides transient voltage suppression for single-circuit applications. Due to its obsolete status, direct equivalent parts with active product status are required to maintain supply chain continuity.

Substiute Parts

V275LA40C

LittelfuseIn Stock: 1115V275LA40C Datasheet

Current PartRFQ

V275LA40CP

Littelfuse Inc.In Stock: 1273V275LA40CP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the V275LA40C is determined by strict equivalence across all electrical and mechanical parameters. The substitute part V275LA40CP is classified as a direct equivalent based on the following criteria:

Electrical Parameters (Must Match):

• Maximum AC Volts: 275 V
• Varistor Voltage (Typical): 430 V
• Varistor Voltage Range: 387–473 V
• Current - Surge: 10 kA
• Energy Absorption: 320 J
• Capacitance @ 1 MHz: 7000 pF

Mechanical Parameters (Must Match):

• Mounting Type: Through Hole
• Package / Case: Disc 20mm
• Number of Circuits: 1

Environmental & Compliance Parameters (Must Match):

• Operating Temperature: -55°C to 85°C
• RoHS Status: ROHS3 Compliant
• Series: C-III

The V275LA40CP meets all specified parameters identically to the main part, with the distinction that it maintains active product status and is available in bulk packaging.

Parameter Comparison

Engineering Selection Recommendations

The V275LA40CP is the direct equivalent substitute for the obsolete V275LA40C. Both parts are manufactured by Littelfuse within the C-III series and share identical electrical, mechanical, and environmental specifications.

Primary Advantage: The V275LA40CP maintains active product status, ensuring long-term availability and supply chain reliability. This is the critical distinction between the two parts.

Compliance: Both parts are ROHS3 compliant. The V275LA40CP additionally carries REACH Unaffected status, providing enhanced regulatory documentation for applications requiring extended compliance tracking.

Packaging Consideration: The V275LA40C is supplied with unspecified packaging, while the V275LA40CP is available in bulk packaging. This distinction affects procurement logistics but does not alter electrical or mechanical performance.

Selection Basis: For new designs or component replacement requiring long-term support, the V275LA40CP is the appropriate selection. For legacy system maintenance where original packaging specifications are critical, compatibility is confirmed across all functional parameters.

Frequently Asked Questions (FAQ)

Q: Can the V275LA40CP be used as a direct replacement for the V275LA40C?

A: Yes. The V275LA40CP is electrically and mechanically identical to the V275LA40C across all specified parameters, including varistor voltage (430 V typical), surge current (10 kA), energy absorption (320 J), and physical form factor (through-hole disc 20mm). The primary difference is product status: V275LA40CP is active, while V275LA40C is obsolete.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by exact equivalence in: maximum AC voltage (275 V), varistor voltage range (387–473 V), surge current capacity (10 kA), energy absorption (320 J), operating temperature range (-55°C to 85°C), mounting type (through hole), package form (disc 20mm), and circuit count (1). All parameters must match precisely.

Q: Does packaging type affect electrical performance?

A: No. The V275LA40C and V275LA40CP differ only in packaging designation (unspecified versus bulk). Electrical and mechanical performance is identical. Packaging affects procurement and handling procedures but not component functionality.

Q: Are both parts RoHS compliant?

A: Yes. Both the V275LA40C and V275LA40CP are ROHS3 compliant. The V275LA40CP additionally carries REACH Unaffected status.

Q: What is the operating temperature range for both parts?

A: Both parts operate across -55°C to 85°C (TA). This range is identical and must be verified against application requirements.

Q: Why is the V275LA40C listed as obsolete?

A: Product status reflects manufacturer lifecycle decisions. The V275LA40CP, as the active equivalent, is the recommended source for ongoing procurement and new applications.