EHT-125-01-SM-D-RA Equivalent & Substitute Parts

Part Overview

The EHT-125-01-SM-D-RA is a rectangular connector header manufactured by Samtec Inc., designed for through-hole, right-angle board-to-cable/wire applications. This shrouded 50-position connector operates across -55°C to 125°C and features gold-plated mating contacts with tin-plated posts. The part maintains Active product status with 947 units in current inventory. Substitute parts are identified when electrical and mechanical parameters align with the core specifications, enabling direct replacement in compatible applications.

Substiute Parts

EHT-125-01-SM-D-RA

Samtec Inc.In Stock: 1021EHT-125-01-SM-D-RA Datasheet

Current PartRFQ

EHT-125-01-S-D-RA

Samtec Inc.In Stock: 1056EHT-125-01-S-D-RA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EHT-125-01-SM-D-RA is determined by strict alignment of the following critical parameters:

• Connector Series & Type: EHT series header, male pin contact type
• Position & Row Configuration: 50 positions, 2 rows
• Pitch Specifications: 0.079" (2.00mm) mating pitch and row spacing
• Mounting & Orientation: Through-hole, right-angle configuration
• Electrical Ratings: 3A current rating, operating range -55°C to 125°C
• Contact Materials & Finish: Gold-plated mating surface, tin-plated posts, phosphor bronze material
• Insulation & Shrouding: Liquid Crystal Polymer (LCP) insulation, 4-wall shrouding with keying slot
• Compliance: UL94 V-0 flammability rating, ROHS3 compliance, REACH unaffected status

The identified substitute EHT-125-01-S-D-RA maintains all critical electrical and mechanical parameters, differing only in packaging designation and moisture sensitivity level classification.

Parameter Comparison

Engineering Selection Recommendations

Both the EHT-125-01-SM-D-RA and EHT-125-01-S-D-RA maintain Active product status with full compliance to ROHS3 and REACH requirements. Both parts carry UL94 V-0 flammability certification, confirming suitability for applications requiring flame-resistant insulation materials. The electrical and mechanical specifications are identical across all critical parameters including pitch, position count, current rating, operating temperature range, and contact materials. Selection between these parts may be based on inventory availability, with the substitute offering 1033 units compared to 947 units of the main part.

Frequently Asked Questions (FAQ)

Q: What determines if EHT-125-01-S-D-RA can replace EHT-125-01-SM-D-RA?

A: Direct substitution is valid when all electrical and mechanical parameters align: 50-position, 2-row configuration; 0.079" (2.00mm) pitch; through-hole right-angle mounting; 3A current rating; -55°C to 125°C operating range; gold-plated mating contacts with tin-plated posts; and 4-wall shrouded LCP insulation. Both parts meet these criteria.

Q: Are there differences in packaging between these parts?

A: Both parts are supplied in tube packaging. The designation difference (SM vs. S) reflects internal Samtec classification but does not affect electrical or mechanical compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both EHT-125-01-SM-D-RA and EHT-125-01-S-D-RA are ROHS3 compliant, REACH unaffected, and carry UL94 V-0 flammability certification.

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

A: Yes, provided the design accommodates the identical electrical specifications: 50 positions, 2 rows, 0.079" (2.00mm) pitch, 3A current rating, and -55°C to 125°C operating temperature. The mechanical footprint and contact configuration are identical.

Q: What is the moisture sensitivity level difference?

A: The main part shows moisture sensitivity level as Not Applicable, while the substitute indicates MSL 1 (Unlimited). Both classifications indicate minimal moisture sensitivity risk for standard handling and storage conditions.