LSEM-120-04.0-L-DV-A-N Equivalent & Substitute Parts

Part Overview

The LSEM-120-04.0-L-DV-A-N is a 40-position self-mating, non-gendered hermaphroditic rectangular connector from Samtec Inc.'s Razor Beam™ LSEM series. This surface mount connector features a 0.031" (0.80mm) pitch and gold-plated contacts suitable for high-density interconnect applications. The part is currently listed as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure component availability for production and field service applications.

Substiute Parts

LSEM-120-04.0-L-DV-A-N

Samtec Inc.In Stock: 787LSEM-120-04.0-L-DV-A-N Datasheet

Current PartRFQ

LSEM-020-04.0-L-DV-A

Samtec Inc.In Stock: 1004LSEM-020-04.0-L-DV-A Datasheet

Parametric EquivalentRFQ

LSEM-020-04.0-L-DV-A-N

Samtec Inc.In Stock: 986LSEM-020-04.0-L-DV-A-N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LSEM-120-04.0-L-DV-A-N is determined by strict parametric equivalence across the following critical specifications:

• Connector Type & Configuration: Self-mating, non-gendered, hermaphroditic design with identical electrical and mechanical interface
• Position Count & Pitch: 40 positions at 0.031" (0.80mm) pitch with 2-row configuration
• Mounting & Physical Dimensions: Surface mount with matching height above board (0.215" / 5.46mm) and mated stacking heights (7mm, 8mm, 10mm)
• Contact Properties: Gold finish at 10.0µin (0.25µm) thickness
• Compliance & Environmental: ROHS3 compliance and MSL 1 rating

Substitute parts must maintain identical values across all these parameters to ensure direct functional and mechanical compatibility without design modification.

Parameter Comparison

Engineering Selection Recommendations

Both LSEM-020-04.0-L-DV-A and LSEM-020-04.0-L-DV-A-N are parametric equivalents to the obsolete LSEM-120-04.0-L-DV-A-N. The substitute parts maintain identical electrical and mechanical specifications while offering the advantage of active product status with confirmed inventory availability.

LSEM-020-04.0-L-DV-A-N is preferred for new designs and production applications due to its active status and higher inventory level (919 pcs). LSEM-020-04.0-L-DV-A remains available as a secondary option with comparable specifications and active status (897 pcs in stock).

Both substitutes carry ROHS3 compliance and MSL 1 rating, meeting the same environmental and regulatory requirements as the original part.

Frequently Asked Questions (FAQ)

Q: Are LSEM-020-04.0-L-DV-A and LSEM-020-04.0-L-DV-A-N direct replacements for LSEM-120-04.0-L-DV-A-N?

A: Yes. Both substitute parts maintain identical specifications across all critical parameters: 40-position configuration, 0.031" (0.80mm) pitch, self-mating hermaphroditic design, surface mount mounting, gold contact finish, and physical dimensions. No design modification is required.

Q: What is the difference between LSEM-020-04.0-L-DV-A and LSEM-020-04.0-L-DV-A-N?

A: Both parts are parametrically equivalent with identical electrical and mechanical specifications. The difference lies in the base product number designation (LSEM-020 vs. LSEM-020) and inventory levels. LSEM-020-04.0-L-DV-A-N has higher availability (919 pcs).

Q: Why is the original LSEM-120-04.0-L-DV-A-N listed as obsolete?

A: Product obsolescence is determined by the manufacturer. The substitute parts from the LSEM-020 base product line provide equivalent functionality and are actively maintained by Samtec Inc.

Q: Do the substitute parts meet the same compliance requirements?

A: Yes. Both LSEM-020-04.0-L-DV-A and LSEM-020-04.0-L-DV-A-N are ROHS3 compliant with MSL 1 rating, matching the original part's environmental and regulatory specifications.

Q: Can these connectors be used interchangeably in existing assemblies?

A: Yes. Identical pitch, position count, connector type, mounting method, and physical dimensions ensure mechanical and electrical interchangeability without PCB or assembly modifications.