DF1B-20DP-2.5DSA Equivalent & Substitute Parts

Part Overview

The DF1B-20DP-2.5DSA is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole mounting with 20 positions at 2.5mm pitch. This connector features a shrouded 4-wall design with push-pull fastening and solder termination for board-to-cable/wire applications. The main part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	DF1B-20DP-2.5DSA
Manufacturer	Hirose Electric Co Ltd
Category	Rectangular Connectors
Series	DF1B
Connector Type	Header
Contact Type	Male Pin
Number of Positions	20
Number of Rows	2
Pitch - Mating	0.098" (2.50mm)
Row Spacing - Mating	0.098" (2.50mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Shrouding	Shrouded - 4 Wall
Operating Temperature	-35°C ~ 85°C
Voltage Rating	250V
Material Flammability Rating	UL94 V-0
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the DF1B-20DP-2.5DSA is determined by strict equivalence across the following critical parameters:

Connector type, contact type, and gender (Header, Male Pin)
Number of positions and rows (20 positions, 2 rows)
Pitch and row spacing (0.098" / 2.50mm)
Mounting method and termination (Through Hole, Solder)
Fastening mechanism (Push-Pull)
Shrouding configuration (Shrouded - 4 Wall)
Operating temperature range (-35°C ~ 85°C)
Voltage rating (250V)
Flammability rating (UL94 V-0)

The identified substitutes maintain full electrical and mechanical compatibility with the original part specification. Variations in product status, packaging, contact finish, and regulatory compliance are noted but do not affect functional interchangeability.

Parameter Comparison

Parameter	DF1B-20DP-2.5DSA	DF1BZ-20DP-2.5DSA	DF1B-20DP-2.5DSA(01)
Manufacturer	Hirose Electric Co Ltd	Hirose Electric Co Ltd	Hirose Electric Co Ltd
Product Status	Obsolete	Active	Active
Series	DF1B	DF1B	DF1B
Connector Type	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin
Number of Positions	20	20	20
Number of Rows	2	2	2
Pitch - Mating	0.098" (2.50mm)	0.098" (2.50mm)	0.098" (2.50mm)
Row Spacing - Mating	0.098" (2.50mm)	0.098" (2.50mm)	0.098" (2.50mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Contact Length - Mating	0.177" (4.50mm)	0.177" (4.50mm)	0.177" (4.50mm)
Contact Length - Post	0.142" (3.60mm)	0.142" (3.60mm)	0.142" (3.60mm)
Overall Contact Length	0.417" (10.60mm)	0.417" (10.60mm)	0.417" (10.60mm)
Insulation Height	0.374" (9.50mm)	0.374" (9.50mm)	0.374" (9.50mm)
Contact Shape	Square	Square	Square
Contact Finish - Mating	Tin	Tin	Gold
Contact Material	Brass	Brass	Brass
Insulation Material	Polyamide (PA), Nylon	Polyamide (PA), Nylon	Polyamide (PA), Nylon
Features	Keying Slot	Keying Slot	Keying Slot
Operating Temperature	-35°C ~ 85°C	-35°C ~ 85°C	-35°C ~ 85°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	White	White	White
Voltage Rating	250V	250V	250V
Mated Stacking Heights	14mm	14mm	14mm
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	Not specified	Tray	Bulk
Inventory Status	973 Pcs New Original In Stock	814 Pcs New Original In Stock	1457 Pcs New Original In Stock

Engineering Selection Recommendations

Both DF1BZ-20DP-2.5DSA and DF1B-20DP-2.5DSA(01) are functionally equivalent substitutes for the obsolete DF1B-20DP-2.5DSA. Selection between substitutes is based on regulatory and compliance requirements:

DF1BZ-20DP-2.5DSA is recommended for applications requiring ROHS3 compliance with tin contact finish. This part maintains active product status and is available in tray packaging.

DF1B-20DP-2.5DSA(01) is recommended for applications requiring ROHS3 compliance with enhanced contact durability through gold plating on mating surfaces. This part maintains active product status and is available in bulk packaging with the highest current inventory level.

The original DF1B-20DP-2.5DSA with RoHS non-compliant status and tin contact finish remains available but is classified as obsolete. Selection of active substitutes ensures long-term supply chain continuity and regulatory compliance for new designs and production runs.

Frequently Asked Questions (FAQ)

Q: What makes DF1BZ-20DP-2.5DSA and DF1B-20DP-2.5DSA(01) suitable substitutes for the obsolete DF1B-20DP-2.5DSA?

A: Both substitutes maintain identical electrical and mechanical specifications including connector type, position count, pitch, mounting method, termination, and operating parameters. All three parts are from the DF1B series and are fully interchangeable at the board level.

Q: What is the difference between the tin and gold contact finishes?

A: The DF1B-20DP-2.5DSA and DF1BZ-20DP-2.5DSA feature tin contact finish on mating surfaces. The DF1B-20DP-2.5DSA(01) features gold plating at 8.00µin (0.203µm) thickness on mating surfaces, providing enhanced corrosion resistance and contact reliability in demanding environments.

Q: Are there packaging differences between the substitutes?

A: Yes. DF1BZ-20DP-2.5DSA is supplied in tray packaging, while DF1B-20DP-2.5DSA(01) is supplied in bulk packaging. Packaging selection depends on assembly process requirements and inventory management practices.

Q: Which substitute should be selected for new designs?

A: For new designs requiring regulatory compliance, either DF1BZ-20DP-2.5DSA or DF1B-20DP-2.5DSA(01) is appropriate, as both carry ROHS3 compliance status. Selection between these two depends on contact finish requirements and packaging preferences.

Q: Is the original DF1B-20DP-2.5DSA still available?

A: The original part remains available with 973 units in stock but is classified as obsolete. For new production and long-term supply assurance, active substitutes are recommended.

Q: Can these parts be used interchangeably in existing assemblies?

A: Yes. All three parts maintain identical form factor, pin configuration, pitch, and electrical ratings. Direct substitution is possible without PCB redesign or assembly process modification.

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