121A20919X DIN Connector Header Equivalent & Substitute Parts

Part Overview

The 121A20919X is a 96-position DIN connector header manufactured by Amphenol CONEC, designed for backplane applications requiring through-hole, right-angle mounting with gold-plated male pins. This component features a 0.100" pitch configuration across three rows with 32 positions loaded, suitable for high-density interconnect applications in industrial and telecommunications equipment.

The 121A20919X is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production and field service requirements for systems utilizing this connector type.

Substiute Parts

121A20919X

Amphenol CONECIn Stock: 1214121A20919X Datasheet

Current PartRFQ

86094327113748ELF

Amphenol ICC (FCI)In Stock: 113386094327113748ELF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 121A20919X is determined by strict alignment across the following critical parameters:

Mandatory Matching Parameters:

• Connector type (Header, Male Pins)
• Number of positions (96)
• Number of positions loaded (32)
• Pitch specification (0.100" / 2.54mm)
• Number of rows (3)
• Style designation (C)
• Mounting configuration (Through Hole, Right Angle)
• Termination method (Solder)
• Contact finish (Gold)
• Operating temperature range (-55°C ~ 125°C)
• Flammability rating (UL94 V-0)
• Moisture sensitivity level (1)
• Regulatory compliance (REACH Unaffected)

The substitute part 86094327113748ELF meets all mandatory matching parameters and is therefore classified as a direct equivalent for the 121A20919X.

Parameter Comparison

Engineering Selection Recommendations

The 86094327113748ELF is a direct functional equivalent to the 121A20919X based on alignment of all critical electrical and mechanical parameters. The substitute part is currently in active production status, providing supply chain continuity for the obsolete 121A20919X.

Compliance Considerations:

Both parts maintain UL94 V-0 flammability certification and REACH Unaffected regulatory status, ensuring compliance with industrial safety and environmental standards. The 86094327113748ELF carries RoHS Compliant certification, while the 121A20919X carries ROHS3 Compliant certification; both designations satisfy RoHS requirements.

Current Rating Differential:

The 121A20919X is rated at 2A per contact, while the 86094327113748ELF is rated at 1.5A per contact. Applications operating at or below 1.5A per contact can utilize the substitute without derating. Applications requiring the full 2A rating must evaluate circuit requirements against the reduced current specification of the substitute part.

Material Composition:

The 121A20919X uses glass-filled polybutylene terephthalate (PBT) for insulation, while the 86094327113748ELF uses polyester thermoplastic. Both materials meet the specified UL94 V-0 flammability requirement and operate across the identical temperature range. Material selection does not affect electrical or mechanical compatibility for standard backplane connector applications.

Frequently Asked Questions (FAQ)

Q: Can the 86094327113748ELF directly replace the 121A20919X in existing PCB designs?

A: Yes, the 86094327113748ELF is mechanically and electrically compatible with the 121A20919X. Both parts share identical pitch (0.100"), position count (96 total, 32 loaded), row configuration (3 rows), mounting type (through-hole right-angle), and termination method (solder). PCB footprints designed for the 121A20919X will accommodate the 86094327113748ELF without modification.

Q: What is the significance of the current rating difference between these parts?

A: The 121A20919X carries a 2A per-contact rating, while the 86094327113748ELF carries a 1.5A per-contact rating. For applications where individual contact current does not exceed 1.5A, the substitute part operates within specification. Applications requiring sustained current above 1.5A per contact must retain the original part or evaluate circuit redesign to reduce per-contact current demands.

Q: Are there packaging differences between these parts?

A: The 121A20919X packaging specification is not provided in the available data. The 86094327113748ELF is supplied in tray packaging. Confirm packaging requirements with your procurement or assembly process specifications before substitution.

Q: Do both parts meet the same regulatory and compliance standards?

A: Both parts meet UL94 V-0 flammability requirements and REACH Unaffected regulatory status. The 121A20919X carries ROHS3 Compliant certification, while the 86094327113748ELF carries RoHS Compliant certification. Both certifications satisfy RoHS directive requirements. Confirm specific compliance requirements for your application or end-market before finalizing substitution.

Q: Why is the 121A20919X classified as obsolete?

A: The 121A20919X is listed as obsolete by the manufacturer. The 86094327113748ELF is in active production status, making it the recommended source for ongoing supply requirements. Existing inventory of the 121A20919X remains available; however, long-term design continuity is supported through the active substitute part.

Q: Are the insulation materials functionally equivalent?

A: The 121A20919X uses glass-filled polybutylene terephthalate (PBT), while the 86094327113748ELF uses polyester thermoplastic. Both materials satisfy the UL94 V-0 flammability rating and operate across the identical temperature range (-55°C ~ 125°C). For standard backplane connector applications, both materials provide equivalent electrical insulation and mechanical performance.