MDF7P-20DP-2.54DSA(55) Equivalent & Substitute Parts

Part Overview

The MDF7P-20DP-2.54DSA(55) is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole board-to-board applications. This connector features 20 positions arranged in 2 rows with 0.100" (2.54mm) pitch spacing and is rated for 3A at 250V operation across -35°C to 85°C. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	MDF7P-20DP-2.54DSA(55)
Manufacturer	Hirose Electric Co Ltd
Series	MDF7
Connector Type	Header
Contact Type	Male Pin
Number of Positions	20
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Current Rating	3A
Voltage Rating	250V
Operating Temperature	-35°C ~ 85°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the MDF7P-20DP-2.54DSA(55) is determined by strict equivalence across the following critical parameters:

Connector type (Header)
Contact type (Male Pin)
Number of positions (20)
Number of rows (2)
Pitch spacing (0.100" / 2.54mm)
Row spacing (0.100" / 2.54mm)
Mounting type (Through Hole)
Termination method (Solder)
Current rating (3A minimum)
Voltage rating (250V minimum)
Operating temperature range (-35°C ~ 85°C minimum)
Material flammability (UL94 V-0)
RoHS compliance status

The MDF7P-20DP-2.54DSA(95) qualifies as a direct substitute based on matching all critical electrical and mechanical parameters while maintaining the same series designation and compliance certifications.

Parameter Comparison

Parameter	MDF7P-20DP-2.54DSA(55)	MDF7P-20DP-2.54DSA(95)
Manufacturer	Hirose Electric Co Ltd	Hirose Electric Co Ltd
Series	MDF7	MDF7
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Number of Positions	20	20
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
Contact Length - Mating	0.492" (12.50mm)	0.492" (12.50mm)
Contact Length - Post	0.118" (3.00mm)	0.118" (3.00mm)
Overall Contact Length	0.710" (18.03mm)	0.710" (18.03mm)
Insulation Height	0.100" (2.54mm)	0.100" (2.54mm)
Contact Shape	Square	Square
Contact Finish - Mating	Tin	Tin
Contact Finish - Post	Tin	Tin
Contact Material	Brass	Brass
Insulation Material	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)
Current Rating	3A	3A
Voltage Rating	250V	250VAC
Operating Temperature	-35°C ~ 85°C	-35°C ~ 85°C
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)
Product Status	Obsolete	Active

Engineering Selection Recommendations

The MDF7P-20DP-2.54DSA(95) is the direct substitute for the obsolete MDF7P-20DP-2.54DSA(55). Both components are manufactured by Hirose Electric Co Ltd within the same MDF7 series and maintain identical electrical and mechanical specifications. The substitute part is currently in active production status with confirmed inventory availability, whereas the original part is obsolete.

Both parts maintain RoHS compliance and UL94 V-0 flammability certification. The electrical performance parameters—3A current rating, 250V voltage rating, and -35°C to 85°C operating temperature range—are equivalent across both components. Physical dimensions, contact geometry, and termination methods are identical, ensuring direct PCB layout compatibility.

The primary distinction is the application context indicated by the part number suffix: the original part (55) is designated for board-to-board applications, while the substitute (95) is designated for board-to-cable/wire applications. This difference does not affect the header connector itself but reflects the intended mating interface. For board-to-board applications, the substitute remains fully compatible when paired with the appropriate mating connector.

Frequently Asked Questions (FAQ)

Q: Can MDF7P-20DP-2.54DSA(95) directly replace MDF7P-20DP-2.54DSA(55) on existing PCBs?

A: Yes. Both connectors have identical footprints, pin counts, pitch spacing, and solder termination specifications. PCB layout modifications are not required.

Q: What is the difference between the (55) and (95) suffix designations?

A: The suffix indicates the intended mating interface. The (55) variant is designed for board-to-board connections, while the (95) variant is designed for board-to-cable/wire connections. The header connector itself is mechanically and electrically identical.

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

A: No. Both parts carry identical RoHS compliance status and UL94 V-0 flammability ratings. Moisture sensitivity level is 1 (Unlimited) for both components.

Q: What is the current inventory status of the substitute part?

A: MDF7P-20DP-2.54DSA(95) has 752 pieces in stock as new original inventory. The original part MDF7P-20DP-2.54DSA(55) has 850 pieces available but is classified as obsolete.

Q: Are the electrical ratings identical between both parts?

A: Yes. Both components are rated for 3A current and 250V voltage operation across the -35°C to 85°C temperature range.

Q: What packaging format is available for the substitute part?

A: MDF7P-20DP-2.54DSA(95) is supplied in bag packaging.

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