L77TWA7W2SP2SY D-Sub Combo Receptacle Connector - Equivalent & Substitute Parts

Part Overview

The L77TWA7W2SP2SY is a 7-position D-Sub combo receptacle connector manufactured by Amphenol ICC (Commercial Products). This panel-mount, through-hole solder connector features female sockets in a 2-row configuration with 5 signal positions and 2 power positions. The connector is designed for applications requiring combined signal and power transmission in a compact D-Sub form factor.

The part is currently in active production status with 743 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications where the original part may be unavailable or where alternative specifications meet system requirements.

Substiute Parts

L77TWA7W2SP2SY

Amphenol ICC (Commercial Products)In Stock: 770L77TWA7W2SP2SY Datasheet

Current PartRFQ

681S7W2203L001

NorComp Inc.In Stock: 1041681S7W2203L001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the L77TWA7W2SP2SY is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Connector Style: D-Sub, Combo
• Connector Type: Receptacle, Female Sockets
• Number of Positions: 7 (5 + 2 Power)
• Number of Rows: 2
• Shell Size, Connector Layout: 2 (DA, A) - 7W2
• Mounting Type: Panel Mount, Through Hole
• Termination: Solder
• Contact Type: Signal and Power
• Flange Feature: Housing/Shell (Unthreaded)
• Operating Temperature Range: -55°C ~ 155°C

The substitute part 681S7W2203L001 (NorComp Inc., Seal-D 681S series) meets all mandatory matching parameters. This part maintains identical mechanical and electrical interface specifications, ensuring direct compatibility in applications where the L77TWA7W2SP2SY is specified.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: L77TWA7W2SP2SY (Amphenol ICC)

The L77TWA7W2SP2SY is the specified original part with active production status and RoHS compliance. This part is suitable for new designs and applications where Amphenol ICC supply chain preference is established.

Substitute Part: 681S7W2203L001 (NorComp Inc.)

The 681S7W2203L001 is a qualified substitute meeting all mandatory interface parameters. This part offers the following distinctions:

• Ingress Protection: IP67 rating (dust tight, waterproof) provides enhanced environmental protection compared to the main part
• Material Flammability: UL94 V-0 certification indicates superior flame resistance
• Shell Finish: Nickel plating provides alternative corrosion resistance characteristics to tin plating
• Dielectric Material: Polybutylene Terephthalate (PBT) offers alternative thermal and mechanical properties to thermoplastic
• Regulatory Compliance: ROHS3 Compliant and REACH Unaffected status

Both parts are RoHS compliant, MSL 1 (unlimited moisture sensitivity), and share identical ECCN and HTSUS classifications. Selection between these parts is based on application-specific environmental requirements, supply availability, and established procurement relationships.

Frequently Asked Questions (FAQ)

Q: Can the 681S7W2203L001 be used as a direct replacement for the L77TWA7W2SP2SY?

A: Yes. Both connectors share identical mechanical and electrical interface specifications: 7-position D-Sub combo receptacle, female sockets, 2-row configuration, panel mount through-hole solder termination, and -55°C to 155°C operating temperature range. The connectors are mechanically and electrically interchangeable.

Q: What are the differences between these two parts?

A: The primary differences are: (1) Shell finish: tin plated versus nickel plated; (2) Ingress protection: the 681S7W2203L001 includes IP67 rating; (3) Flammability rating: the 681S7W2203L001 is UL94 V-0 certified; (4) Dielectric material: thermoplastic versus polybutylene terephthalate (PBT); (5) Manufacturer: Amphenol ICC versus NorComp Inc.

Q: Which part should I select for outdoor or high-moisture applications?

A: The 681S7W2203L001 is specified with IP67 ingress protection (dust tight, waterproof), making it suitable for outdoor and high-moisture environments. The L77TWA7W2SP2SY does not specify ingress protection rating.

Q: Are both parts RoHS compliant?

A: Yes. The L77TWA7W2SP2SY is RoHS Compliant. The 681S7W2203L001 is ROHS3 Compliant. Both meet RoHS requirements.

Q: What is the packaging difference?

A: The L77TWA7W2SP2SY packaging is not specified in the provided data. The 681S7W2203L001 is supplied in Tray packaging.

Q: Are there current rating differences?

A: Yes. The L77TWA7W2SP2SY is rated at 7.5A. The 681S7W2203L001 is rated at 5A and 40A. Application current requirements must be verified against the selected part's rating.

Q: What is the voltage rating for each part?

A: The L77TWA7W2SP2SY is rated at 300V. The 681S7W2203L001 voltage rating is not specified in the provided data.

Q: Are both parts in active production?

A: Yes. Both the L77TWA7W2SP2SY and 681S7W2203L001 are listed as Active product status with inventory available (743 units and 976 units respectively).