DF1B-4DP-2.5DSA Equivalent & Substitute Parts

Part Overview

The DF1B-4DP-2.5DSA is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole mounting in board-to-cable/wire applications. This connector features a 4-position, 2-row configuration with 0.098" (2.50mm) pitch and push-pull fastening. The main part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	DF1B-4DP-2.5DSA
Manufacturer	Hirose Electric Co Ltd
Series	DF1B
Connector Type	Header
Number of Positions	4
Number of Rows	2
Pitch - Mating	0.098" (2.50mm)
Row Spacing - Mating	0.098" (2.50mm)
Mounting Type	Through Hole
Shrouding	Shrouded - 4 Wall
Fastening Type	Push-Pull
Operating Temperature	-35°C ~ 85°C
Voltage Rating	250V
Material Flammability Rating	UL94 V-0
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the DF1B-4DP-2.5DSA is determined by strict equivalence across the following critical parameters:

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

The substitute parts identified maintain full electrical and mechanical compatibility with the original specification. Variations in contact finish, packaging format, and product status are noted but do not affect functional interchangeability in the specified application.

Parameter Comparison

Parameter	DF1B-4DP-2.5DSA	DF1BZ-4DP-2.5DSA	DF1B-4DP-2.5DSA(01)
Manufacturer	Hirose Electric Co Ltd	Hirose Electric Co Ltd	Hirose Electric Co Ltd
Series	DF1B	DF1B	DF1B
Product Status	Obsolete	Active	Active
Connector Type	Header	Header	Header
Number of Positions	4	4	4
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
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Fastening Type	Push-Pull	Push-Pull	Push-Pull
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
Operating Temperature	-35°C ~ 85°C	-35°C ~ 85°C	-35°C ~ 85°C
Voltage Rating	250V	250V	250V
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
Mated Stacking Heights	14mm	14mm	14mm
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Packaging	-	Tray	Bulk

Engineering Selection Recommendations

Both DF1BZ-4DP-2.5DSA and DF1B-4DP-2.5DSA(01) are direct functional equivalents to the obsolete DF1B-4DP-2.5DSA. Selection between these substitutes is based on regulatory compliance and application requirements:

DF1BZ-4DP-2.5DSA is an active product with ROHS3 compliance and tray packaging. This part is suitable for applications requiring RoHS-compliant components and is available in moderate quantities.

DF1B-4DP-2.5DSA(01) is an active product with ROHS3 compliance, gold-plated mating contacts, and bulk packaging. The gold contact finish provides enhanced corrosion resistance compared to tin plating. This part offers the highest inventory availability and is recommended for high-volume procurement.

Both substitute parts maintain identical electrical and mechanical specifications, operating temperature range, voltage rating, and flammability certification as the original part.

Frequently Asked Questions (FAQ)

Q: Can DF1BZ-4DP-2.5DSA and DF1B-4DP-2.5DSA(01) be used interchangeably with DF1B-4DP-2.5DSA?

A: Yes. Both substitute parts maintain full electrical and mechanical compatibility. The primary differences are product status (both active versus obsolete), RoHS compliance (both ROHS3 compliant versus non-compliant), and contact finish (gold plating on the (01) variant versus tin on both original and DF1BZ).

Q: What is the difference between the contact finishes on these parts?

A: DF1B-4DP-2.5DSA and DF1BZ-4DP-2.5DSA feature tin-plated mating contacts. DF1B-4DP-2.5DSA(01) features gold-plated mating contacts with 8.00µin (0.203µm) thickness. Gold plating provides superior corrosion resistance in high-humidity or corrosive environments.

Q: Are there packaging differences between the substitute parts?

A: Yes. DF1BZ-4DP-2.5DSA is supplied in tray packaging, while DF1B-4DP-2.5DSA(01) is supplied in bulk packaging. Packaging selection depends on procurement volume and handling requirements.

Q: Do all three parts meet the same regulatory standards?

A: DF1B-4DP-2.5DSA(01) and DF1BZ-4DP-2.5DSA are ROHS3 compliant. The original DF1B-4DP-2.5DSA is RoHS non-compliant. All three parts are REACH unaffected and carry UL94 V-0 flammability certification.

Q: What is the inventory status for each part?

A: DF1B-4DP-2.5DSA (obsolete): 843 pcs. DF1BZ-4DP-2.5DSA (active): 1410 pcs. DF1B-4DP-2.5DSA(01) (active): 103,120 pcs.

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