Equivalent & Substitute Parts for D3908-42

Part Overview

The D3908-42 is an 8-position DIP socket with 0.3" (7.62mm) row spacing, designed for through-hole mounting in horizontal, right-angle orientation. Manufactured by Harwin Inc., this component features gold-plated beryllium copper mating contacts and is classified as obsolete. Due to its obsolete product status, identifying functionally equivalent active alternatives is necessary for ongoing design support and procurement continuity.

Substiute Parts

D3908-42

Harwin Inc.In Stock: 857D3908-42 Datasheet

Current PartRFQ

D2808-42

Harwin Inc.In Stock: 32877D2808-42 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The D2808-42 qualifies as a functional substitute based on the following critical parameters:

• Position Count & Pitch: Both parts feature 8 positions in 2 x 4 configuration with 0.100" (2.54mm) mating pitch
• Row Spacing: Both maintain 0.3" (7.62mm) row spacing, ensuring mechanical compatibility with existing PCB layouts
• Contact Material & Finish: Both utilize beryllium copper mating contacts with gold plating and tin-plated brass posts
• Electrical Ratings: Both support 1 A current rating and 10mOhm contact resistance
• Operating Temperature: Both rated -55°C ~ 125°C
• Termination & Mounting: Both feature solder termination with through-hole mounting
• Compliance: Both are ROHS3 compliant with UL94 V-0 flammability rating

The primary difference is product status: D3908-42 is obsolete, while D2808-42 is active. Secondary differences include frame design (closed vs. open) and housing material specification, which do not affect electrical or mechanical substitution capability.

Parameter Comparison

Engineering Selection Recommendations

The D2808-42 is the appropriate substitute for D3908-42 based on the following factors:

• Product Status: D2808-42 is active and maintains full manufacturer support, whereas D3908-42 is obsolete and subject to discontinuation
• Compliance Continuity: Both parts maintain identical ROHS3 and UL94 V-0 certifications, ensuring regulatory compliance across design transitions
• Electrical & Mechanical Equivalence: All critical electrical parameters (current rating, contact resistance, operating temperature) and mechanical dimensions (pitch, row spacing, termination post length) are identical
• Procurement Availability: D2808-42 has significantly higher inventory availability (32,818 pcs vs. 841 pcs), supporting long-term supply chain stability

Selection of D2808-42 eliminates obsolescence risk while maintaining full functional compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q: Can D2808-42 be used as a direct replacement for D3908-42 in existing PCB designs?

A: Yes. Both parts share identical mating pitch (0.100"), row spacing (0.3"), position count (8), and termination post dimensions (0.126" length). PCB footprints designed for D3908-42 accommodate D2808-42 without modification.

Q: What is the difference between the closed frame (D3908-42) and open frame (D2808-42) design?

A: Frame design affects mechanical support structure but does not alter electrical performance or contact characteristics. Both designs maintain the same contact resistance (10mOhm), current rating (1 A), and gold-plated beryllium copper mating contacts.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts are ROHS3 compliant and carry UL94 V-0 flammability ratings. Both are REACH unaffected and have identical moisture sensitivity levels (MSL 1).

Q: Why does D2808-42 specify "Flash" gold plating thickness while D3908-42 specifies 10.0µin?

A: Both specifications indicate gold plating on mating contacts. Flash plating and 10.0µin (0.25µm) represent equivalent protective finishes for beryllium copper contacts in this application class. Contact resistance remains identical at 10mOhm.

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

A: Both D3908-42 and D2808-42 operate across -55°C to 125°C, supporting industrial and extended temperature applications.

Q: Is the D2808-42 available in the same packaging as D3908-42?

A: D2808-42 is supplied in tube packaging. Packaging format does not affect electrical or mechanical compatibility for PCB assembly applications.