DF1B-2P-2.5DS(25) Equivalent & Substitute Parts

Part Overview

The DF1B-2P-2.5DS(25) is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole, right-angle board-to-cable/wire applications. This 2-position connector operates at 250V with a 0.098" (2.50mm) pitch and features shrouded 4-wall construction with gold-plated mating contacts. The part is active in production with 840 units in current inventory. Substitute parts are identified when equivalent electrical and mechanical parameters align with application requirements, enabling component sourcing flexibility across multiple manufacturers.

Key Parameters

Parameter	Value
Manufacturer Part Number	DF1B-2P-2.5DS(25)
Manufacturer	Hirose Electric Co Ltd
Category	Rectangular Connectors
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.098" (2.50mm)
Number of Positions	2
Number of Rows	1
Mounting Type	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall
Voltage Rating	250V
Operating Temperature	-35°C ~ 85°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the DF1B-2P-2.5DS(25) are qualified based on the following critical parameters:

Primary Matching Criteria:

Connector Type: Header
Contact Type: Male Pin
Number of Positions: 2
Number of Rows: 1
Mounting Type: Through Hole, Right Angle
Shrouding: Shrouded - 4 Wall
Pitch - Mating: 0.098" (2.50mm) or 0.100" (2.54mm)
Style: Board to Cable/Wire or Board to Board
Material Flammability Rating: UL94 V-0
Voltage Rating: 250V or higher

Substitutes Identified:

0534260210 (Molex Mini-Lock 53426) – Matches pitch, positions, mounting, and shrouding with equivalent voltage and temperature performance
S2B-XH-A (JST XH Series) – Identical pitch, positions, and mounting with equivalent electrical ratings
S2B-XH-A-1 (JST XH Series) – Identical specifications to S2B-XH-A with higher inventory availability
5-104361-1 (TE Connectivity AMPMODU MTE) – Functionally equivalent with 0.100" (2.54mm) pitch, suitable for applications with minor pitch tolerance

Parameter Comparison

Parameter	DF1B-2P-2.5DS(25)	0534260210	S2B-XH-A	S2B-XH-A-1	5-104361-1
Manufacturer	Hirose Electric	Molex	JST Sales America	JST Sales America	TE Connectivity
Connector Type	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Pitch - Mating	0.098" (2.50mm)	0.098" (2.50mm)	0.098" (2.50mm)	0.098" (2.50mm)	0.100" (2.54mm)
Number of Positions	2	2	2	2	2
Number of Rows	1	1	1	1	1
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Voltage Rating	250V	250V	250V	250V	—
Operating Temperature	-35°C ~ 85°C	-40°C ~ 105°C	-25°C ~ 85°C	-25°C ~ 85°C	-65°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active
Inventory (Pcs)	840	27,274	2,990	52,396	15,447

Engineering Selection Recommendations

All identified substitute parts maintain active product status and comply with RoHS3 or RoHS standards, ensuring regulatory alignment with the original DF1B-2P-2.5DS(25).

Primary Substitutes (Exact Pitch Match - 0.098" / 2.50mm):

S2B-XH-A-1 offers the highest inventory availability (52,396 units) with identical electrical and mechanical specifications to the original part
S2B-XH-A provides equivalent performance with lower inventory levels (2,990 units)
0534260210 (Molex) extends the operating temperature range to -40°C ~ 105°C, suitable for applications requiring enhanced thermal performance

Secondary Substitute (Pitch Tolerance - 0.100" / 2.54mm):

5-104361-1 (TE Connectivity) operates at a 0.100" pitch, a 0.02mm deviation from the original specification. This part is suitable only for applications where mating connector tolerance accommodates the pitch variation. Extended operating temperature range (-65°C ~ 105°C) and 3A current rating provide enhanced performance margins.

Frequently Asked Questions (FAQ)

Q: Can S2B-XH-A-1 be used as a direct replacement for DF1B-2P-2.5DS(25)? A: Yes. Both parts share identical pitch (0.098" / 2.50mm), position count, mounting type, shrouding configuration, and voltage rating. Operating temperature ranges differ slightly (-25°C ~ 85°C vs. -35°C ~ 85°C), but both maintain UL94 V-0 flammability compliance and RoHS3 certification.

Q: What is the pitch difference between the DF1B-2P-2.5DS(25) and 5-104361-1? A: The DF1B-2P-2.5DS(25) operates at 0.098" (2.50mm) pitch, while the 5-104361-1 operates at 0.100" (2.54mm) pitch. This 0.02mm difference requires verification that mating connectors or receptacles can accommodate the tolerance variation.

Q: Which substitute offers the widest operating temperature range? A: The 5-104361-1 (TE Connectivity) operates from -65°C ~ 105°C, providing the broadest temperature envelope. The 0534260210 (Molex) operates from -40°C ~ 105°C. Both exceed the original part's -35°C ~ 85°C range.

Q: Are all substitutes RoHS compliant? A: Yes. All identified substitutes comply with RoHS3 or RoHS standards, matching the regulatory compliance of the original DF1B-2P-2.5DS(25).

Q: What packaging formats are available for these substitutes? A: DF1B-2P-2.5DS(25) and S2B-XH-A/S2B-XH-A-1 are supplied in Bulk packaging. The 0534260210 is supplied in Tray packaging. The 5-104361-1 is supplied in Tube packaging. Packaging format selection depends on assembly process requirements and inventory management protocols.

Q: Can the 0534260210 (Molex) be used in applications requiring the original -35°C minimum temperature? A: Yes. The 0534260210 operates from -40°C ~ 105°C, which encompasses the original part's -35°C ~ 85°C range and provides additional thermal margin at both extremes.

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