DF1B-12P-2.5DSA Equivalent & Substitute Parts

Part Overview

The DF1B-12P-2.5DSA is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole mounting with 12 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 part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and component sourcing.

Key Parameters

Parameter	Value
Manufacturer Part Number	DF1B-12P-2.5DSA
Manufacturer	Hirose Electric Co Ltd
Category	Rectangular Connectors
Series	DF1B
Connector Type	Header
Contact Type	Male Pin
Number of Positions	12
Pitch - Mating	0.098" (2.50mm)
Mounting Type	Through Hole
Shrouding	Shrouded - 4 Wall
Fastening Type	Push-Pull
Termination	Solder
Operating Temperature	-35°C ~ 85°C
Voltage Rating	250V
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution for the DF1B-12P-2.5DSA is determined by the following critical parameters that must remain constant across all equivalent parts:

Connector type: Header
Contact type: Male Pin
Number of positions: 12
Pitch - mating: 0.098" (2.50mm)
Mounting type: Through Hole
Shrouding: Shrouded - 4 Wall
Fastening type: Push-Pull
Termination: Solder
Operating temperature range: -35°C ~ 85°C
Voltage rating: 250V
Material flammability rating: UL94 V-0
Insulation material: Polyamide (PA), Nylon
Features: Keying Slot

The identified substitute parts maintain these core parameters while differing in product status, RoHS compliance, and contact finish specifications.

Parameter Comparison

Parameter	DF1B-12P-2.5DSA	DF1BZ-12P-2.5DSA	DF1B-12P-2.5DSA(01)
Product Status	Obsolete	Active	Active
Connector Type	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin
Number of Positions	12	12	12
Pitch - 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
Termination	Solder	Solder	Solder
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
Insulation Color	White	White	White
Mated Stacking Heights	14mm	14mm	14mm
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	Not specified
ECCN	EAR99	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040	8536.69.4040
Inventory Status	1085 Pcs New Original In Stock	2172 Pcs New Original In Stock	931 Pcs New Original In Stock

Engineering Selection Recommendations

DF1BZ-12P-2.5DSA is the primary direct substitute for the obsolete DF1B-12P-2.5DSA. Both parts maintain identical mechanical and electrical specifications with matching contact geometry, pitch, and operating parameters. The DF1BZ variant is currently in active production status and carries ROHS3 compliance, addressing regulatory requirements for new designs. Inventory availability is higher for this variant at 2172 pieces.

DF1B-12P-2.5DSA(01) serves as an alternative substitute with identical core specifications. This part differs in contact finish, featuring gold plating on the mating surface instead of tin. The gold finish provides enhanced corrosion resistance and contact reliability in certain environmental conditions. This variant is also in active production with RoHS compliance and maintains adequate inventory levels at 931 pieces.

Both substitute parts are functionally interchangeable with the original DF1B-12P-2.5DSA for applications requiring the specified electrical and mechanical parameters. Selection between DF1BZ-12P-2.5DSA and DF1B-12P-2.5DSA(01) depends on contact finish requirements and environmental exposure considerations specific to the application.

Frequently Asked Questions (FAQ)

Q: Can DF1BZ-12P-2.5DSA directly replace DF1B-12P-2.5DSA in existing designs?

A: Yes. Both parts share identical connector type, contact configuration, pitch, mounting method, and operating specifications. The primary difference is product status and RoHS compliance level. No design modifications are required for substitution.

Q: What is the difference between DF1BZ-12P-2.5DSA and DF1B-12P-2.5DSA(01)?

A: The primary difference is contact finish. DF1BZ-12P-2.5DSA uses tin plating on mating contacts, while DF1B-12P-2.5DSA(01) uses gold plating. Both maintain identical mechanical dimensions, pitch, and electrical ratings. Gold-plated contacts offer improved corrosion resistance in high-humidity or corrosive environments.

Q: Are there packaging differences between the substitute parts?

A: DF1BZ-12P-2.5DSA is supplied in bulk packaging. DF1B-12P-2.5DSA(01) is also supplied in bulk packaging. Both are suitable for production assembly processes.

Q: Do the substitute parts meet current RoHS requirements?

A: DF1BZ-12P-2.5DSA carries ROHS3 compliance. DF1B-12P-2.5DSA(01) carries RoHS compliance. Both meet current regulatory requirements for new product designs.

Q: What is the moisture sensitivity level for these connectors?

A: All three parts, including the original DF1B-12P-2.5DSA and both substitutes, have a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without special moisture control requirements.

Q: Are these parts suitable for high-temperature applications?

A: All parts maintain an operating temperature range of -35°C to 85°C. Applications requiring operation outside this range require alternative connector designs.

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