DM1B-DSF-PEJ(82) Equivalent & Substitute Parts

Part Overview

The DM1B-DSF-PEJ(82) is a 12-position (9 + 3) Secure Digital (SD) card connector manufactured by Hirose Electric Co Ltd. This surface mount, right-angle connector features reverse card entry with an ejector mechanism and gold-plated contacts. The part is classified as obsolete, making identification of active equivalent alternatives necessary for ongoing production and design requirements.

Substiute Parts

DM1B-DSF-PEJ(82)

Hirose Electric Co LtdIn Stock: 839DM1B-DSF-PEJ(82) Datasheet

Current PartRFQ

DM1B-DSF-PEJ(92)

Hirose Electric Co LtdIn Stock: 1888DM1B-DSF-PEJ(92) Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DM1B-DSF-PEJ(82) is determined by the following critical parameters:

• Series and Base Product Number: Both parts belong to the DM1 series with base product number DM1B
• Card Type and Position Count: Both support Secure Digital (SD) cards with 12 (9 + 3) positions
• Mounting Configuration: Both are surface mount, right-angle connectors
• Connector Mechanism: Both feature push-in/push-out insertion with ejector functionality
• Contact Material and Finish: Both use gold-plated contacts
• Height Above Board: Both maintain 0.114" (2.90mm) height
• Compliance Standards: Both are ROHS3 compliant with MSL 1 rating

The primary distinction between the main part and its substitute relates to product status (obsolete versus active), packaging format, mounting feature orientation, and minor contact finish thickness variation.

Parameter Comparison

Engineering Selection Recommendations

The DM1B-DSF-PEJ(92) is the manufacturer-recommended substitute for the obsolete DM1B-DSF-PEJ(82). Both connectors maintain identical electrical and mechanical specifications for SD card interface applications, including position count, contact material, and board height.

Selection of the DM1B-DSF-PEJ(92) is supported by:

• Active product status with confirmed inventory availability (1835 pcs)
• ROHS3 compliance matching the original part
• Identical MSL 1 rating for moisture sensitivity
• Maintained gold contact finish with negligible thickness variation (0.203µm versus 0.200µm)
• Tape & Reel packaging suitable for automated assembly processes

The primary design consideration is the mounting feature orientation difference: the original part features reverse-bottom mounting, while the substitute uses normal-top mounting. PCB layout and mechanical clearance must be verified to accommodate this orientation change.

Frequently Asked Questions (FAQ)

Q: Are the DM1B-DSF-PEJ(82) and DM1B-DSF-PEJ(92) electrically interchangeable?

A: Yes. Both connectors support the same 12-position SD card interface with identical contact materials, finishes, and electrical specifications. The contact finish thickness difference (8.00µin versus 7.87µin) is within acceptable tolerance ranges and does not affect electrical performance.

Q: What is the significance of the mounting feature difference (Reverse - Bottom versus Normal - Top)?

A: The mounting feature indicates the physical orientation of the connector on the PCB. The DM1B-DSF-PEJ(82) mounts on the board's reverse side, while the DM1B-DSF-PEJ(92) mounts on the standard top side. PCB layout must be redesigned to accommodate this orientation change.

Q: Does the Tape & Reel packaging of the DM1B-DSF-PEJ(92) affect compatibility?

A: No. Packaging format affects only the supply and handling method during assembly. The connector itself remains functionally identical. Tape & Reel packaging is standard for automated pick-and-place assembly processes.

Q: Are both parts RoHS compliant?

A: Yes. Both the DM1B-DSF-PEJ(82) and DM1B-DSF-PEJ(92) are ROHS3 compliant and carry MSL 1 (unlimited) moisture sensitivity ratings.

Q: Why is the original part marked as obsolete?

A: Product obsolescence typically reflects manufacturer discontinuation decisions. The DM1B-DSF-PEJ(92) represents the active continuation of the DM1 series SD connector line with equivalent functionality.