DF1B-4DP-2.5DS Equivalent & Substitute Parts

Part Overview

The DF1B-4DP-2.5DS is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole, right-angle 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 currently obsolete, making substitute parts necessary for ongoing production and maintenance applications requiring compatible rectangular connectors in this form factor.

Key Parameters

Parameter	Value
Manufacturer Part Number	DF1B-4DP-2.5DS
Manufacturer	Hirose Electric Co Ltd
Category	Rectangular Connectors
Series	DF1B
Connector Type	Header
Contact Type	Male Pin
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, Right Angle
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-2.5DS is determined by strict equivalence across the following critical parameters:

Connector type (Header)
Contact type (Male Pin)
Number of positions (4) and rows (2)
Mating pitch (0.098" / 2.50mm)
Row spacing (0.098" / 2.50mm)
Mounting configuration (Through Hole, Right Angle)
Shrouding style (Shrouded - 4 Wall)
Fastening mechanism (Push-Pull)
Operating temperature range (-35°C ~ 85°C)
Insulation material (Polyamide/Nylon)
Flammability rating (UL94 V-0)

The substitute parts DF1BZ-4DP-2.5DS and DF1B-4DP-2.5DS(01) maintain full compatibility across these core parameters. Variations in contact finish, voltage rating, packaging, and compliance status do not affect mechanical or electrical interchangeability within the specified operating conditions.

Parameter Comparison

Parameter	DF1B-4DP-2.5DS (Main)	DF1BZ-4DP-2.5DS (Substitute)	DF1B-4DP-2.5DS(01) (Substitute)
Manufacturer	Hirose Electric Co Ltd	Hirose Electric Co Ltd	Hirose Electric Co Ltd
Series	DF1B	DF1B	DF1B
Connector Type	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin
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, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
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	0.130" (3.30mm)	0.130" (3.30mm)	0.130" (3.30mm)
Insulation Height	0.339" (8.61mm)	0.339" (8.61mm)	0.339" (8.61mm)
Contact Shape	Square	Square	Square
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	150V	250V
Contact Finish - Mating	Tin	Tin	Gold
Contact Finish - Post	Tin	Tin	Not specified
Product Status	Obsolete	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	Not specified	Tray	Bulk

Engineering Selection Recommendations

Both substitute parts maintain full mechanical and electrical compatibility with the original DF1B-4DP-2.5DS within the specified operating parameters. Selection between substitutes should be based on the following criteria:

DF1BZ-4DP-2.5DS is suitable for applications where ROHS3 compliance is required and voltage rating of 150V is sufficient. This part is available in tray packaging and has higher inventory availability (3231 pcs).

DF1B-4DP-2.5DS(01) is suitable for applications requiring 250V voltage rating matching the original specification and ROHS3 compliance. This part features gold contact finish on the mating surface and is available in bulk packaging with 1169 pcs in stock.

Both substitute parts are active products from Hirose Electric Co Ltd, ensuring long-term availability and supply chain stability compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Are DF1BZ-4DP-2.5DS and DF1B-4DP-2.5DS(01) mechanically interchangeable with DF1B-4DP-2.5DS?

A: Yes. Both substitute parts maintain identical mechanical dimensions, mounting configuration, pitch spacing, and connector geometry. They are direct mechanical replacements.

Q: What is the difference in voltage rating between the substitutes?

A: DF1BZ-4DP-2.5DS has a 150V rating, while DF1B-4DP-2.5DS(01) maintains the original 250V rating. Select based on your circuit voltage requirements.

Q: Does the contact finish difference affect compatibility?

A: No. The contact finish (tin versus gold) does not affect mechanical mating or electrical interchangeability. Gold finish provides enhanced corrosion resistance in certain environments.

Q: Are both substitutes RoHS compliant?

A: Yes. Both DF1BZ-4DP-2.5DS and DF1B-4DP-2.5DS(01) are ROHS3 compliant, whereas the original DF1B-4DP-2.5DS is RoHS non-compliant.

Q: What packaging options are available for the substitutes?

A: DF1BZ-4DP-2.5DS is supplied in tray packaging, while DF1B-4DP-2.5DS(01) is supplied in bulk packaging. Select based on your procurement and assembly requirements.

Q: Can I use these substitutes in applications with the same operating temperature range?

A: Yes. All three parts operate across the identical temperature range of -35°C to 85°C.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message