DCFME-101 Equivalent & Substitute Parts Reference

Part Overview

The DCFME-101 is a 37-position two-piece backshell connector manufactured by ITT Cannon, LLC, designed for D-Sub applications requiring shielded cable termination. This connector features a 180° cable exit angle, metal construction with blue chromate plating, and is classified as an active product with full RoHS compliance. Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part's specifications, enabling direct replacement in applications where cable exit angle and material composition do not impose design constraints.

Substiute Parts

DCFME-101

ITT Cannon, LLCIn Stock: 937DCFME-101 Datasheet

Current PartRFQ

971-037-020R121

NorComp Inc.In Stock: 1343971-037-020R121 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DCFME-101 is determined by the following critical parameters:

• Number of Positions: Must be 37 to maintain connector compatibility
• Compatible Shell Size: Must be C to ensure mechanical fit
• Compatible D-Sub Size: Must support 37pos and HD62pos configurations
• Accessory Type: Must be two-piece backshell
• Shielding: Must be shielded for electromagnetic protection
• Mating Screws: Must be 4-40 for assembly compatibility
• Product Status: Must be active to ensure availability and support

The substitute part 971-037-020R121 meets all critical electrical and mechanical parameters. Differences in cable exit angle (45° versus 180°), primary material composition (plastic versus metal), and plating specification (nickel over copper versus blue chromate) represent design variations that do not affect functional substitution when cable routing and environmental exposure do not impose specific constraints.

Parameter Comparison

Engineering Selection Recommendations

Both the DCFME-101 and 971-037-020R121 are active products with current manufacturing status and full regulatory compliance. The DCFME-101 maintains RoHS compliance, while the 971-037-020R121 achieves ROHS3 compliance, indicating alignment with current environmental standards. Both parts carry EAR99 export classification and identical HTSUS coding, confirming equivalent regulatory treatment.

Selection between these parts should be based on cable routing requirements. The DCFME-101's 180° cable exit angle is suitable for applications requiring straight-back cable termination, while the 971-037-020R121's 45° angle accommodates angled cable routing. Material composition differences (metal versus plastic) and plating variations do not affect electrical performance in standard shielded connector applications but may influence environmental durability in corrosive or high-temperature environments.

Frequently Asked Questions (FAQ)

Q: Can 971-037-020R121 directly replace DCFME-101 in all applications?

A: Both parts share identical position count (37), shell size (C), D-Sub compatibility (37pos and HD62pos), shielding, and mating screw specifications (4-40). The primary difference is cable exit angle: 180° for DCFME-101 versus 45° for 971-037-020R121. Direct replacement is possible only when cable routing accommodates the 45° angle.

Q: What are the material and plating differences, and do they affect performance?

A: DCFME-101 uses zinc metal with blue chromate plating; 971-037-020R121 uses metallized plastic with nickel over copper plating. Both provide shielding and electrical continuity. Material selection may influence mechanical durability and environmental resistance but does not affect electrical connector function in standard applications.

Q: Are both parts RoHS compliant?

A: Yes. DCFME-101 is RoHS Compliant; 971-037-020R121 is ROHS3 Compliant. Both meet current environmental regulations.

Q: What inventory levels are available?

A: DCFME-101 has 859 pieces in stock; 971-037-020R121 has 1277 pieces in stock, both listed as new original inventory.

Q: Do both parts use the same mating screw specification?

A: Yes, both parts use 4-40 mating screws, ensuring assembly compatibility with standard D-Sub connector hardware.