ACT90MD18SN Equivalent & Substitute Parts

Part Overview

The ACT90MD18SN is an 18-position circular connector receptacle manufactured by TE Connectivity Deutsch Connectors, designed for aerospace and military applications. This component features female sockets with crimp termination, composite shell construction, and gold-plated mating contacts. The part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain compliance with MIL-DTL-38999 Series III specifications and operational requirements.

Substiute Parts

ACT90MD18SN

TE Connectivity Deutsch ConnectorsIn Stock: 844ACT90MD18SN Datasheet

Current PartRFQ

CTVPS00RF-15-18JN

Amphenol Aerospace OperationsIn Stock: 846CTVPS00RF-15-18JN Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ACT90MD18SN is based on strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector type: Receptacle with female sockets
• Position count: 18 positions
• Shell size classification: 15-18
• Mounting configuration: Panel mount with flange
• Termination method: Crimp
• Fastening mechanism: Threaded
• Orientation: Normal (N)
• Shell material: Composite
• Contact finish: Gold plating on mating surfaces
• Shielding: Shielded construction
• Operating temperature range: -65°C to 200°C
• Contact material: Copper alloy
• Insert material: Thermoplastic
• Series compliance: MIL-DTL-38999 Series III

The substitute part CTVPS00RF-15-18JN meets all mandatory matching parameters and is qualified as a direct functional equivalent for applications requiring MIL-DTL-38999 Series III compliance.

Parameter Comparison

Engineering Selection Recommendations

ACT90MD18SN (TE Connectivity Deutsch Connectors):

• Product status: Discontinued at DiGi Electronics
• RoHS compliance: Non-compliant
• Suitable for legacy systems where RoHS exemptions apply or where existing inventory is available
• Current inventory: 744 pieces

CTVPS00RF-15-18JN (Amphenol Aerospace Operations):

• Product status: Active
• RoHS compliance: ROHS3 Compliant
• Recommended for new designs and applications requiring current RoHS3 compliance
• Contact finish thickness: 100.0µin (2.54µm), providing enhanced durability compared to the original part's 50.0µin specification
• Current inventory: 778 pieces
• Suitable for aerospace, aviation, marine, and military applications

Both parts satisfy MIL-DTL-38999 Series III requirements and maintain identical mechanical and electrical interface specifications. Selection between these parts should be based on product lifecycle status, RoHS compliance requirements, and application-specific durability considerations.

Frequently Asked Questions (FAQ)

Q: Can CTVPS00RF-15-18JN directly replace ACT90MD18SN in existing assemblies?

A: Yes. Both connectors are MIL-DTL-38999 Series III compliant with identical mechanical interfaces, pin counts, mounting configurations, and electrical characteristics. The connectors are mechanically and electrically interchangeable.

Q: What is the difference in contact finish thickness between these parts?

A: The ACT90MD18SN has a gold contact finish thickness of 50.0µin (1.27µm), while the CTVPS00RF-15-18JN has 100.0µin (2.54µm). The thicker plating on the substitute part provides extended contact durability and wear resistance.

Q: Does the shell finish difference affect compatibility?

A: Both parts feature nickel shell finishes—the original uses nickel plating, while the substitute uses electroless nickel. Both finishes provide equivalent corrosion resistance and environmental protection. This difference does not affect mechanical or electrical compatibility.

Q: Is the CTVPS00RF-15-18JN suitable for aerospace applications?

A: Yes. The CTVPS00RF-15-18JN is qualified for aerospace, aviation, marine, and military applications and maintains MIL-DTL-38999 Series III compliance.

Q: What is the significance of ROHS3 compliance on the substitute part?

A: ROHS3 compliance indicates the substitute part meets current Restriction of Hazardous Substances regulations. The original ACT90MD18SN is RoHS non-compliant. For new designs and applications subject to RoHS requirements, the CTVPS00RF-15-18JN is the appropriate selection.

Q: Are both parts available in the same packaging?

A: The ACT90MD18SN is available in standard packaging (not specified), while the CTVPS00RF-15-18JN is supplied in bulk packaging. Both are available in current inventory quantities suitable for production requirements.

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

A: Both the ACT90MD18SN and CTVPS00RF-15-18JN operate across the identical temperature range of -65°C to 200°C, ensuring thermal compatibility in aerospace and military environments.