DF1B-24DP-2.5DSA Equivalent & Substitute Parts

Part Overview

The DF1B-24DP-2.5DSA is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole mounting with 24 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 currently obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	DF1B-24DP-2.5DSA
Manufacturer	Hirose Electric Co Ltd
Category	Rectangular Connectors
Series	DF1B
Connector Type	Header
Contact Type	Male Pin
Number of Positions	24
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-24DP-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 (24 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. Differences in product status, RoHS compliance, and contact finish are noted but do not affect functional interchangeability in applications where the original part was specified.

Parameter Comparison

Parameter	DF1B-24DP-2.5DSA	DF1BZ-24DP-2.5DSA	DF1B-24DP-2.5DSA(01)
Manufacturer	Hirose Electric Co Ltd	Hirose Electric Co Ltd	Hirose Electric Co Ltd
Product Status	Obsolete	Active	Active
Connector Type	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin
Number of Positions	24	24	24
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
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
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant

Engineering Selection Recommendations

Both DF1BZ-24DP-2.5DSA and DF1B-24DP-2.5DSA(01) are functionally equivalent to the obsolete DF1B-24DP-2.5DSA across all critical electrical and mechanical parameters. Selection between substitutes should be based on the following criteria:

DF1BZ-24DP-2.5DSA is an active product with ROHS3 compliance and tin contact finish, maintaining the original contact material specification. This part is suitable for applications where RoHS3 compliance is required and tin plating is acceptable.

DF1B-24DP-2.5DSA(01) is an active product with RoHS compliance and gold contact finish. The gold plating provides enhanced corrosion resistance and contact reliability compared to tin finish. This part is recommended for applications requiring superior contact performance or where gold plating is specified.

Both substitutes are available in active production status, ensuring supply continuity. The choice between them depends on compliance requirements and contact finish specifications for the target application.

Frequently Asked Questions (FAQ)

Q: Can DF1BZ-24DP-2.5DSA be used as a direct replacement for DF1B-24DP-2.5DSA?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical connector type, position count, pitch, mounting method, and operating specifications. The primary difference is RoHS compliance status and product availability.

Q: What is the difference between DF1BZ-24DP-2.5DSA and DF1B-24DP-2.5DSA(01)?

A: Both are functionally equivalent substitutes. DF1BZ-24DP-2.5DSA features tin contact finish and ROHS3 compliance. DF1B-24DP-2.5DSA(01) features gold contact finish and RoHS compliance. Contact finish selection depends on application requirements for corrosion resistance and contact reliability.

Q: Are there packaging differences between the substitute parts?

A: DF1BZ-24DP-2.5DSA is supplied in bulk packaging. DF1B-24DP-2.5DSA(01) is supplied in bulk packaging. Both are suitable for production assembly processes.

Q: Do the substitute parts maintain the same mechanical dimensions?

A: Yes. All three parts maintain identical contact lengths, insulation height, overall contact length, and mated stacking heights of 14mm. They are mechanically interchangeable in PCB layouts and mating applications.

Q: What is the operating temperature range for these connectors?

A: All three parts operate across -35°C to 85°C, maintaining full electrical and mechanical performance within this range.

Q: Are these connectors suitable for high-voltage applications?

A: All three parts are rated for 250V operation and carry UL94 V-0 flammability rating, making them suitable for standard industrial and commercial applications within the specified voltage range.

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