DF10-31S-2DSA(68) Equivalent & Substitute Parts

Part Overview

The DF10-31S-2DSA(68) is a 31-position receptacle connector manufactured by Hirose Electric Co Ltd, designed for through-hole PCB mounting with 0.079" (2.00mm) pitch spacing. This connector features gold-plated mating contacts, kinked pin solder termination, and push-pull fastening. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing maintenance, repair, and legacy system support. The DF10 series provides reliable board-to-board or cable interconnection in applications requiring 2A current capacity at 250VAC.

Substiute Parts

DF10-31S-2DSA(68)

Hirose Electric Co LtdIn Stock: 925DF10-31S-2DSA(68) Datasheet

Current PartRFQ

DF10-31S-2DSA(78)

Hirose Electric Co LtdIn Stock: 855DF10-31S-2DSA(78) Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DF10-31S-2DSA(68) is determined by strict alignment of the following critical parameters:

• Series Compatibility: Both parts must belong to the DF10 series
• Position Count: Exact match of 31 positions required
• Pitch Specification: 0.079" (2.00mm) mating pitch mandatory
• Connector Type: Receptacle configuration with female socket contacts
• Mounting Method: Through-hole PCB mounting required
• Electrical Ratings: Minimum 2A current capacity and 250V voltage rating
• Fastening Mechanism: Push-pull fastening type
• Contact Material & Finish: Phosphor bronze with gold mating surface and tin post finish
• Insulation Material: Polyamide (PA) nylon construction
• Temperature Range: -30°C to 85°C operating specification

The DF10-31S-2DSA(78) qualifies as a direct substitute based on these parameters. While termination method differs (solder vs. kinked pin), both achieve equivalent electrical and mechanical function within the specified operating envelope.

Parameter Comparison

Engineering Selection Recommendations

The DF10-31S-2DSA(78) is the qualified substitute for the obsolete DF10-31S-2DSA(68). Selection is based on the following engineering criteria:

Product Status: The DF10-31S-2DSA(78) maintains active product status with Hirose Electric Co Ltd, ensuring ongoing availability and manufacturing support. The original DF10-31S-2DSA(68) is obsolete, necessitating substitution for new procurement and long-term supply chain continuity.

Compliance & Certifications: Both parts share identical UL94 V-0 flammability ratings, EAR99 export classification, and HTSUS commodity codes. The substitute part carries RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

Electrical & Mechanical Equivalence: All critical parameters align identically, including 31-position configuration, 0.079" (2.00mm) pitch, 2A current rating, 250V voltage specification, and -30°C to 85°C operating temperature range. Both employ phosphor bronze contacts with gold mating finish and tin post finish, ensuring equivalent electrical performance and contact reliability.

Termination Compatibility: The transition from kinked pin to straight solder termination in the DF10-31S-2DSA(78) maintains functional equivalence. Both termination methods achieve reliable solder joint formation on through-hole PCB applications. PCB design modifications may be required to accommodate the straight pin geometry; however, hole spacing and pitch remain unchanged.

Frequently Asked Questions (FAQ)

Q: Can the DF10-31S-2DSA(78) be used as a direct replacement for the DF10-31S-2DSA(68) in existing PCB designs?

A: Yes, the DF10-31S-2DSA(78) is electrically and mechanically equivalent. Both connectors share identical pitch (0.079" / 2.00mm), position count (31), mounting type (through-hole), and electrical ratings (2A, 250V). The primary design consideration is termination geometry: the DF10-31S-2DSA(68) uses kinked pins while the DF10-31S-2DSA(78) uses straight pins. Existing PCB hole patterns are compatible; however, solder pad design may require minor adjustment to accommodate straight pin insertion and soldering.

Q: What are the key parameters that define substitution eligibility for the DF10-31S-2DSA(68)?

A: Substitution eligibility is determined by: DF10 series membership, 31-position configuration, 0.079" (2.00mm) mating pitch, receptacle connector type with female socket contacts, through-hole mounting, push-pull fastening, 2A minimum current capacity, 250V minimum voltage rating, phosphor bronze contacts with gold mating finish, polyamide nylon insulation, and -30°C to 85°C operating temperature range. Any deviation from these parameters disqualifies a part as a direct substitute.

Q: Are there compliance or regulatory differences between the DF10-31S-2DSA(68) and DF10-31S-2DSA(78)?

A: The DF10-31S-2DSA(78) carries RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements. Both parts share identical UL94 V-0 flammability ratings, EAR99 export classification, and HTSUS codes. The substitute part's active product status ensures compliance with evolving regulatory standards and manufacturing process controls.

Q: What inventory considerations apply when transitioning from the DF10-31S-2DSA(68) to the DF10-31S-2DSA(78)?

A: The DF10-31S-2DSA(68) is obsolete with 882 pieces currently in stock. The DF10-31S-2DSA(78) is active with 795 pieces in stock. For new designs and long-term supply chain planning, procurement should transition to the DF10-31S-2DSA(78) to ensure continued availability and manufacturing support beyond existing inventory depletion.

Q: Are there any electrical performance differences between kinked pin and straight solder termination?

A: Both termination methods achieve equivalent electrical performance and contact reliability in through-hole PCB applications. Kinked pins and straight pins both form reliable solder joints when properly soldered. The selection between termination types is driven by PCB design requirements and manufacturing process compatibility rather than electrical performance differences.