ACT94MD18SN Equivalent & Substitute Parts

Part Overview

The ACT94MD18SN is an 18-position circular connector receptacle manufactured by TE Connectivity Deutsch Connectors, designed for panel mount applications with female sockets and crimp termination. This connector conforms to MIL-DTL-38999 Series III specifications and is qualified for aerospace and military applications. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent substitute components that maintain functional and electrical compatibility for ongoing system support and procurement.

Substiute Parts

ACT94MD18SN

TE Connectivity Deutsch ConnectorsIn Stock: 1040ACT94MD18SN Datasheet

Current PartRFQ

CTV07RW-15-18B

Amphenol Aerospace OperationsIn Stock: 1066CTV07RW-15-18B Datasheet

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CTV07RW-15-18JN

Amphenol Aerospace OperationsIn Stock: 1092CTV07RW-15-18JN Datasheet

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CTV07RW-15-18JN-LC

Amphenol Aerospace OperationsIn Stock: 1153CTV07RW-15-18JN-LC Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ACT94MD18SN is determined by strict adherence to the following critical parameters:

Primary Substitution Criteria:

• Connector type: Receptacle with female sockets
• Position count: 18 positions
• Shell size: 15-18 insert designation
• Mounting configuration: Panel mount with bulkhead front side nut
• Termination method: Crimp contacts
• Fastening: Threaded
• Orientation: Normal (N)
• Shielding: Shielded construction
• Contact finish: Gold plating on mating surfaces
• Series compliance: MIL-DTL-38999 Series III

Secondary Compatibility Parameters:

• Shell material: Composite construction
• Operating temperature range: Minimum -65°C to maximum 200°C (or compatible subset)
• Contact material: Copper alloy
• Ingress protection: Environment resistant rating

Substitute parts must satisfy all primary criteria and maintain compatibility within the secondary parameters. Parts that deviate from these specifications are not functionally equivalent for direct replacement applications.

Parameter Comparison

Engineering Selection Recommendations

CTV07RW-15-18JN (Primary Substitute)

The CTV07RW-15-18JN represents the most direct functional equivalent to the ACT94MD18SN. This Amphenol Aerospace Operations connector maintains all critical substitution parameters: 18-position receptacle with female sockets, 15-18 shell size, panel mount configuration with bulkhead front side nut, crimp termination, threaded fastening, normal orientation, composite shielded construction, and gold contact finish. The part is currently active in production with 982 units in stock. Both connectors comply with MIL-DTL-38999 Series III specifications and share identical RoHS non-compliant and MSL 1 ratings. The operating temperature range of -65°C to 175°C is compatible with the majority of aerospace and military applications, though applications requiring operation above 175°C would be limited to the original ACT94MD18SN specification of 200°C maximum.

CTV07RW-15-18B and CTV07RW-15-18JN-LC (Housing-Only Alternatives)

The CTV07RW-15-18B and CTV07RW-15-18JN-LC are receptacle housing components without integrated female sockets. These parts are suitable only for applications where contacts are procured separately and assembled into the housing. Both maintain the same 18-position, 15-18 shell size, panel mount, bulkhead configuration, and MIL-DTL-38999 Series III compliance. The CTV07RW-15-18JN-LC offers the highest inventory availability at 1111 units. Selection of housing-only variants requires confirmation that contact procurement and assembly processes are compatible with system requirements.

Compliance and Availability Considerations

All substitute parts maintain RoHS non-compliant status consistent with the original ACT94MD18SN, appropriate for aerospace and military applications where RoHS exemptions apply. All substitutes carry MSL 1 (Unlimited) moisture sensitivity ratings, eliminating moisture-related procurement constraints. The active product status of all Amphenol Aerospace alternatives ensures ongoing availability and supply chain continuity compared to the discontinued TE Connectivity original.

Frequently Asked Questions (FAQ)

Q: Can the CTV07RW-15-18B or CTV07RW-15-18JN-LC be used as direct replacements for the ACT94MD18SN?

A: The CTV07RW-15-18B and CTV07RW-15-18JN-LC are receptacle housings without integrated female sockets. Direct replacement requires that the system design accommodates separate contact procurement and assembly. The CTV07RW-15-18JN includes pre-assembled female sockets and functions as a complete direct replacement.

Q: What is the significance of the shell finish difference between nickel (ACT94MD18SN) and cadmium (CTV07RW series)?

A: Shell finish affects corrosion resistance and environmental durability. Both nickel and cadmium finishes provide environment-resistant protection suitable for aerospace and military applications. The cadmium finish on Amphenol substitutes is compliant with MIL-DTL-38999 Series III specifications and is functionally equivalent for the stated applications.

Q: Are there temperature limitations when substituting the ACT94MD18SN with CTV07RW-15-18JN?

A: The CTV07RW-15-18JN operates from -65°C to 175°C, compared to the ACT94MD18SN range of -65°C to 200°C. Applications requiring sustained operation above 175°C cannot use the Amphenol substitute. Applications within the -65°C to 175°C range are fully compatible.

Q: What is the difference between contact finish thickness specifications?

A: The ACT94MD18SN specifies 50.0µin (1.27µm) gold contact finish thickness, while the CTV07RW-15-18JN specifies 100.0µin (2.54µm). Both thicknesses comply with MIL-DTL-38999 Series III contact finish requirements. The thicker finish on the Amphenol part provides additional durability and mating cycle capability.

Q: Are the CTV07RW-15-18B and CTV07RW-15-18JN-LC identical except for packaging?

A: Both parts are receptacle housings with identical electrical and mechanical specifications. The primary difference is packaging designation: CTV07RW-15-18B is packaged in bulk, and CTV07RW-15-18JN-LC is also packaged in bulk. Both are suitable for identical applications requiring housing-only components.

Q: What certifications and compliance standards apply to all listed parts?

A: All parts comply with MIL-DTL-38999 Series III specifications. All parts are RoHS non-compliant, which is appropriate for aerospace and military applications under applicable exemptions. All parts carry MSL 1 (Unlimited) moisture sensitivity ratings. All parts are classified under ECCN EAR99 for export control purposes.

Q: Can the ACT94MD18SN be restocked, or is substitution the only option?

A: The ACT94MD18SN is discontinued at DiGi Electronics. Procurement of the original part number may be possible through alternative distributors or manufacturer direct channels, but active production status is not confirmed. The CTV07RW-15-18JN is actively produced by Amphenol Aerospace Operations and represents the recommended path for ongoing supply assurance.