V660LC100B Equivalent & Substitute Parts

Part Overview

The V660LC100B is a 1.02 kV varistor manufactured by Littelfuse Inc., designed for transient voltage suppression applications. This disc-type varistor provides 6.5 kA surge current capacity with 250 J energy rating in a 20mm through-hole package. The V660LC100B is classified as obsolete, making identification of active equivalent parts essential for ongoing procurement and system maintenance. The V660LC100BP serves as the direct active substitute, offering identical electrical and mechanical specifications with current manufacturing status.

Substiute Parts

V660LC100B

Littelfuse Inc.In Stock: 834V660LC100B Datasheet

Current PartRFQ

V660LC100BP

Littelfuse Inc.In Stock: 948V660LC100BP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the V660LC100B is determined by strict equivalence across all critical electrical parameters: varistor voltage range (940 V minimum to 1.1 kV maximum), surge current capacity (6.5 kA), energy dissipation (250 J), and mechanical form factor (20mm disc, through-hole mounting). The V660LC100BP maintains identical specifications across these parameters, differing only in packaging format (bulk versus standard) and product status (active versus obsolete). This substitution is valid for all applications where the V660LC100B was originally specified.

Parameter Comparison

Engineering Selection Recommendations

The V660LC100BP is the direct equivalent for the obsolete V660LC100B. Both parts are manufactured by Littelfuse Inc. within the LC series and maintain identical electrical performance across all specified parameters. The V660LC100BP carries active product status, ensuring continued availability and manufacturing support. Both parts meet ROHS3 compliance requirements and carry MSL 1 (unlimited moisture sensitivity level) classification. Selection of the V660LC100BP eliminates obsolescence risk while maintaining full functional and mechanical compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q: Can V660LC100BP be used as a direct replacement for V660LC100B? A: Yes. Both parts are electrically and mechanically identical across all specified parameters, including varistor voltage (1.02 kV typical), surge current (6.5 kA), energy rating (250 J), and physical form factor (20mm disc, through-hole). The V660LC100BP is the active production equivalent.

Q: What is the difference between V660LC100B and V660LC100BP? A: The primary differences are product status and packaging format. V660LC100B is obsolete with standard packaging, while V660LC100BP is active production with bulk packaging. Electrical and mechanical specifications are identical.

Q: Are there any compliance or certification differences? A: Both parts are ROHS3 compliant and carry identical MSL 1 classification. The V660LC100BP includes REACH Unaffected status documentation. No compliance barriers exist for substitution.

Q: What parameters determine substitution validity for this varistor? A: Substitution is valid when varistor voltage range (940 V to 1.1 kV), surge current capacity (6.5 kA), energy rating (250 J), and physical package (20mm disc, through-hole) remain unchanged. All these parameters match between V660LC100B and V660LC100BP.

Q: Can this varistor be used in both AC and DC applications? A: Yes. The part is rated for maximum AC voltage of 660 V and maximum DC voltage of 850 V, supporting both application types within specified limits.