MDF7B-20P-2.54DSA Equivalent & Substitute Parts

Part Overview

The MDF7B-20P-2.54DSA is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole mounting applications. This connector features 20 vertical positions with 0.100" (2.54mm) pitch spacing and male pin contacts. The main part number MDF7B-20P-2.54DSA(01) carries an obsolete product status, making identification of active equivalent parts essential for ongoing design support and procurement.

Key Parameters

Parameter	Specification
Manufacturer	Hirose Electric Co Ltd
Series	MDF7
Connector Type	Header
Contact Type	Male Pin
Number of Positions	20
Number of Rows	1
Pitch - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Contact Finish - Mating	Gold
Contact Material	Brass
Insulation Material	Polybutylene Terephthalate (PBT)
Operating Temperature	-35°C ~ 85°C
Current Rating	3A
Voltage Rating	250V
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the MDF7B-20P-2.54DSA(01) is determined by strict equivalence across the following critical parameters:

Connector type, contact type, and pin configuration (Header, Male Pin, 20 positions, single row)
Pitch specification (0.100" / 2.54mm mating pitch)
Mounting method (Through Hole, Solder termination)
Electrical ratings (3A current, 250V voltage)
Material composition and contact finish (Brass contacts, Gold mating finish, PBT insulation)
Environmental compliance (UL94 V-0, RoHS Compliant, MSL 1)
Operating temperature range (-35°C ~ 85°C)

The substitute part MDF7B-20P-2.54DSA(96) maintains full equivalence across all specified parameters. The primary distinction is product status: the main part is obsolete while the substitute is active, and packaging differs (standard versus bulk). These differences do not affect electrical or mechanical compatibility.

Parameter Comparison

Parameter	MDF7B-20P-2.54DSA(01)	MDF7B-20P-2.54DSA(96)
Manufacturer	Hirose Electric Co Ltd	Hirose Electric Co Ltd
Series	MDF7	MDF7
Product Status	Obsolete	Active
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Number of Positions	20	20
Number of Rows	1	1
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Contact Length - Mating	0.648" (16.47mm)	0.648" (16.47mm)
Contact Length - Post	0.118" (3.00mm)	0.118" (3.00mm)
Overall Contact Length	0.867" (22.01mm)	0.866" (22.00mm)
Insulation Height	0.100" (2.54mm)	0.100" (2.54mm)
Contact Shape	Square	Square
Contact Finish - Mating	Gold	Gold
Contact Material	Brass	Brass
Insulation Material	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)
Operating Temperature	-35°C ~ 85°C	-35°C ~ 85°C
Current Rating	3A	3A
Voltage Rating	250V	250VAC
Material Flammability Rating	UL94 V-0	UL94 V-0
Insulation Color	Black	Black
RoHS Status	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040

Engineering Selection Recommendations

The MDF7B-20P-2.54DSA(96) is the direct active equivalent for the obsolete MDF7B-20P-2.54DSA(01). Both parts share identical electrical and mechanical specifications within the MDF7 series from Hirose Electric Co Ltd. The substitute part carries active product status, ensuring ongoing availability and supply chain continuity.

Both parts maintain full RoHS compliance and UL94 V-0 flammability certification. The MSL 1 rating indicates unlimited shelf life under standard storage conditions. Electrical performance is equivalent: 3A current capacity and 250V voltage rating support identical application requirements.

The negligible difference in overall contact length (0.867" versus 0.866") falls within manufacturing tolerance and does not affect mechanical fit or electrical performance in standard through-hole PCB applications.

Frequently Asked Questions (FAQ)

Q: Can MDF7B-20P-2.54DSA(96) directly replace MDF7B-20P-2.54DSA(01) in existing designs?

A: Yes. Both parts are electrically and mechanically equivalent. The substitute maintains identical pitch (2.54mm), contact configuration (20 male pins, single row), electrical ratings (3A, 250V), and material specifications (Brass contacts with gold finish, PBT insulation). The primary difference is product status: the substitute is active while the original is obsolete.

Q: What is the significance of the packaging difference between these parts?

A: The main part is supplied in standard packaging while the substitute is available in bulk packaging. This distinction affects procurement and inventory management but does not alter the connector's electrical or mechanical properties.

Q: Are there any compatibility concerns with PCB footprints?

A: No. Both parts use identical through-hole solder termination with 2.54mm pitch spacing. PCB footprints designed for MDF7B-20P-2.54DSA(01) are fully compatible with MDF7B-20P-2.54DSA(96).

Q: Do both parts meet the same environmental and compliance standards?

A: Yes. Both parts are RoHS compliant, carry UL94 V-0 flammability certification, and have MSL 1 moisture sensitivity rating. Operating temperature range is identical: -35°C to 85°C.

Q: What is the difference between 250V and 250VAC voltage ratings?

A: The substitute specifies 250VAC while the main part specifies 250V. Both ratings support the same voltage application requirements. The substitute's explicit AC designation does not reduce compatibility or performance in standard DC or AC circuit applications within the 250V specification.

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