DF1B-36DP-2.5DS Equivalent & Substitute Parts

Part Overview

The DF1B-36DP-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 36 positions arranged in 2 rows with 0.098" (2.50mm) pitch spacing and push-pull fastening. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	DF1B-36DP-2.5DS
Manufacturer	Hirose Electric Co Ltd
Category	Rectangular Connectors
Series	DF1B
Connector Type	Header
Contact Type	Male Pin
Number of Positions	36
Number of Rows	2
Pitch - Mating	0.098" (2.50mm)
Row Spacing - Mating	0.098" (2.50mm)
Mounting Type	Through Hole, Right Angle
Termination	Solder
Fastening Type	Push-Pull
Shrouding	Shrouded - 4 Wall
Operating Temperature Range	-35°C ~ 85°C
Material Flammability Rating	UL94 V-0
Insulation Material	Polyamide (PA), Nylon
Contact Material	Brass
Insulation Color	White

Substitute Part Grouping Explanation

Substitution of the DF1B-36DP-2.5DS is determined by strict equivalence across the following critical parameters:

Connector Type & Configuration: Header, male pin, 36 positions in 2 rows
Pitch Specifications: 0.098" (2.50mm) mating pitch and row spacing
Mounting & Termination: Through-hole, right-angle, solder termination
Mechanical Interface: Shrouded 4-wall design with push-pull fastening
Environmental Ratings: Operating temperature -35°C ~ 85°C, UL94 V-0 flammability
Material Composition: Brass contacts, polyamide/nylon insulation

Two active substitutes meet these criteria while maintaining full mechanical and electrical compatibility:

DF1BZ-36DP-2.5DS - Direct equivalent with RoHS compliance upgrade
DF1B-36DP-2.5DS(01) - Manufacturer-recommended successor with gold contact finish

Parameter Comparison

Parameter	DF1B-36DP-2.5DS (Original)	DF1BZ-36DP-2.5DS	DF1B-36DP-2.5DS(01)
Product Status	Obsolete	Active	Active
Number of Positions	36	36	36
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
Termination	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Contact Type	Male Pin	Male Pin	Male Pin
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 Finish - Mating	Tin	Tin	Gold
Contact Finish Thickness - Mating	Not specified	39.4µin (1.00µm)	8.00µin (0.203µm)
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
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	White	White	White
Voltage Rating	250V	150V	250V
RoHS Status	RoHS non-compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

DF1BZ-36DP-2.5DS is the direct functional equivalent offering RoHS compliance. This substitute maintains all mechanical and electrical specifications of the original part while meeting current environmental regulations. The primary distinction is the voltage rating of 150V versus the original 250V; applications operating below 150V experience no functional impact. This part is suitable for new designs and production environments requiring RoHS-compliant components.

DF1B-36DP-2.5DS(01) is the manufacturer-recommended successor, designated by the (01) revision suffix. This part retains the original 250V voltage rating and adds RoHS compliance. The contact finish differs, utilizing gold plating at 8.00µin (0.203µm) thickness instead of tin, providing enhanced corrosion resistance and contact reliability. This part is the preferred choice for applications requiring the full 250V rating and represents the active production standard from Hirose Electric Co Ltd.

Both substitutes are currently in active production status with substantial inventory availability, ensuring supply chain continuity for the obsolete DF1B-36DP-2.5DS.

Frequently Asked Questions (FAQ)

Q: Can DF1BZ-36DP-2.5DS be used in applications rated for 250V?

A: No. The DF1BZ-36DP-2.5DS has a voltage rating of 150V. Applications requiring 250V operation must use DF1B-36DP-2.5DS(01).

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

A: Tin contacts (DF1BZ-36DP-2.5DS) provide standard electrical performance. Gold contacts (DF1B-36DP-2.5DS(01)) offer superior corrosion resistance and are preferred for applications with extended shelf life or harsh environmental exposure.

Q: Are the mechanical dimensions identical across all three parts?

A: Yes. All three parts share identical pitch (0.098" / 2.50mm), row spacing, contact lengths, insulation height, and mounting configuration. They are mechanically interchangeable on PCBs designed for the DF1B series.

Q: Does the contact finish thickness affect electrical performance?

A: Contact finish thickness does not affect electrical performance within the specified operating parameters. Both tin and gold finishes meet the connector's electrical requirements.

Q: Why is the original DF1B-36DP-2.5DS obsolete?

A: The original part is non-RoHS compliant. Hirose Electric Co Ltd transitioned the DF1B series to RoHS-compliant variants (DF1BZ and DF1B(01) revisions) to meet current environmental and regulatory standards.

Q: Which substitute should be selected for new designs?

A: DF1B-36DP-2.5DS(01) is the manufacturer-recommended active production part and should be specified for new designs. It provides full feature parity with the original part while meeting RoHS compliance requirements.

Q: Are inventory levels sufficient for both substitutes?

A: Yes. DF1BZ-36DP-2.5DS has 1,169 pieces in stock, and DF1B-36DP-2.5DS(01) has 1,088 pieces in stock, providing adequate supply for production requirements.

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