MDF7-46DP-2.54DSA(55) Equivalent & Substitute Parts

Part Overview

The MDF7-46DP-2.54DSA(55) is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole board-to-board applications with 46 positions at 0.100" (2.54mm) pitch. This connector features unshrouded male pins with solder termination and push-pull fastening. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	46
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Shrouding	Unshrouded
Style	Board to Board
Material Flammability Rating	UL94 V-0
Insulation Color	Black
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MDF7-46DP-2.54DSA(55) is determined by the following critical parameters:

Connector type (Header)
Contact type (Male Pin)
Number of positions (46)
Number of rows (2)
Pitch - mating (0.100" / 2.54mm)
Row spacing - mating (0.100" / 2.54mm)
Mounting type (Through Hole)
Termination (Solder)
Fastening type (Push-Pull)
Shrouding (Unshrouded)
Style (Board to Board)

The substitute part 86837-146HLF manufactured by Amphenol ICC (FCI) meets all critical substitution criteria. Both connectors share identical mechanical and electrical interface specifications, enabling direct functional replacement in board-to-board applications requiring 46-position 2.54mm pitch headers with push-pull fastening and through-hole solder termination.

Parameter Comparison

Parameter	MDF7-46DP-2.54DSA(55)	86837-146HLF
Manufacturer	Hirose Electric Co Ltd	Amphenol ICC (FCI)
Series	MDF7	BERGSTIK® II
Product Status	Obsolete	Active
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Number of Positions	46	46
Number of Rows	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Shrouding	Unshrouded	Unshrouded
Style	Board to Board	Board to Board
Contact Shape	Square	Square
Insulation Height	0.100" (2.54mm)	0.100" (2.54mm)
Contact Length - Mating	0.394" (10.00mm)	0.380" (9.65mm)
Contact Length - Post	0.118" (3.00mm)	0.120" (3.05mm)
Overall Contact Length	0.612" (15.54mm)	0.600" (15.24mm)
Contact Material	Brass	Phosphor Bronze
Contact Finish - Mating	Tin	Gold or Gold, GXT™
Material Flammability Rating	UL94 V-0	UL94 V-0
Insulation Color	Black	Black
Current Rating (Amps)	3A	5A
Voltage Rating	250V	110V
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040

Engineering Selection Recommendations

The 86837-146HLF serves as the primary substitute for the obsolete MDF7-46DP-2.54DSA(55). Both connectors maintain identical mechanical interface specifications and board-to-board functionality. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

Both parts carry UL94 V-0 flammability certification and unlimited moisture sensitivity rating (MSL 1), meeting equivalent environmental and safety requirements. The 86837-146HLF is RoHS Compliant and REACH Affected, providing compliance documentation for regulated applications.

Minor variations exist in contact materials (Brass vs. Phosphor Bronze), contact finish (Tin vs. Gold), and electrical ratings (3A/250V vs. 5A/110V). These differences do not affect mechanical interchangeability. The substitute part's higher current rating and gold contact finish provide enhanced performance characteristics suitable for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the 86837-146HLF directly replace the MDF7-46DP-2.54DSA(55) in existing designs?

A: Yes. Both connectors share identical mechanical specifications including 46 positions, 2 rows, 0.100" (2.54mm) pitch, through-hole mounting, solder termination, and push-pull fastening. Physical and electrical interface compatibility is maintained.

Q: What are the differences between these two connector models?

A: Primary differences include contact material (Brass vs. Phosphor Bronze), contact finish (Tin vs. Gold), and electrical ratings (3A/250V vs. 5A/110V). Contact length dimensions vary slightly (0.394" vs. 0.380" mating length; 0.118" vs. 0.120" post length). These variations do not affect board-level interchangeability.

Q: Why is the MDF7-46DP-2.54DSA(55) listed as obsolete?

A: The MDF7-46DP-2.54DSA(55) has been discontinued by Hirose Electric Co Ltd. The 86837-146HLF remains in active production, providing a supported alternative for new designs and replacement applications.

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

A: Both parts meet UL94 V-0 flammability requirements and carry MSL 1 (Unlimited) moisture sensitivity ratings. The 86837-146HLF includes RoHS Compliance and REACH Affected status documentation. Both share identical ECCN (EAR99) and HTSUS (8536.69.4040) classifications.

Q: What packaging is available for the substitute part?

A: The 86837-146HLF is supplied in Bag packaging, compared to the original part's unspecified packaging format.

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