DF1BZ-4P-2.5DS(18) Equivalent & Substitute Parts

Part Overview

The DF1BZ-4P-2.5DS(18) is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for board-to-cable/wire applications with a 4-position, 2.5mm pitch configuration. This part is classified as obsolete and no longer in active production. Due to its discontinued status, identifying functionally equivalent active alternatives is essential for ongoing system maintenance, repair, and new design implementations where legacy compatibility is required.

Key Parameters

Parameter	Value
Manufacturer Part Number	DF1BZ-4P-2.5DS(18)
Manufacturer	Hirose Electric Co Ltd
Category	Rectangular Connectors
Product Status	Obsolete
Base Product Number	DF1BZ
Connector Type	Header
Number of Positions	4
Pitch - Mating	0.098" (2.50mm)
Contact Type	Male Pin
Mounting Type	Through Hole, Right Angle
Style	Board to Cable/Wire
Shrouding	Shrouded - 4 Wall
Termination	Solder
Fastening Type	Push-Pull
Operating Temperature Range	-35°C ~ 85°C
Voltage Rating	150V
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
ECCN	OBSOLETE

Substitute Part Grouping Explanation

The substitute part DF1BZ-4P-2.5DS is identified as the direct functional equivalent based on the following critical parameters:

Connector Type & Configuration: Both parts are 4-position headers with 2.5mm (0.098") mating pitch
Contact Specifications: Male pin contacts with identical mating and post contact lengths
Mechanical Interface: Through-hole, right-angle mounting with shrouded 4-wall design
Electrical Ratings: 150V voltage rating and identical operating temperature range (-35°C ~ 85°C)
Termination & Fastening: Solder termination with push-pull fastening mechanism
Compliance & Standards: Both maintain UL94 V-0 flammability rating and ROHS3 compliance

The primary distinction is product status: the original part is obsolete, while DF1BZ-4P-2.5DS is active and readily available in production quantities.

Parameter Comparison

Parameter	DF1BZ-4P-2.5DS(18) - Main Part	DF1BZ-4P-2.5DS - Substitute
Manufacturer	Hirose Electric Co Ltd	Hirose Electric Co Ltd
Product Status	Obsolete	Active
Number of Positions	4	4
Pitch - Mating	0.098" (2.50mm)	0.098" (2.50mm)
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Operating Temperature	-35°C ~ 85°C	-35°C ~ 85°C
Voltage Rating	150V	150V
Flammability Rating	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	Not Applicable	1 (Unlimited)

Engineering Selection Recommendations

The DF1BZ-4P-2.5DS substitute part is the appropriate selection for applications currently using or requiring the DF1BZ-4P-2.5DS(18). Selection is based on the following engineering criteria:

Product Status & Availability: The original part is obsolete with no ongoing production. The substitute maintains active production status with confirmed inventory availability (4100 pcs in stock), ensuring supply chain continuity.

Functional Equivalence: All critical electrical and mechanical parameters are identical, including connector pitch, contact configuration, voltage rating, temperature range, and fastening mechanism. The parts are mechanically and electrically interchangeable.

Compliance & Certifications: Both parts maintain identical regulatory compliance: ROHS3 certification and UL94 V-0 flammability rating. The substitute carries REACH Unaffected status and EAR99 ECCN classification.

Moisture Sensitivity: The substitute part carries MSL 1 (Unlimited) rating, indicating superior moisture handling characteristics compared to the original part's Not Applicable designation.

Frequently Asked Questions (FAQ)

Q: Are DF1BZ-4P-2.5DS(18) and DF1BZ-4P-2.5DS mechanically interchangeable?

A: Yes. Both parts share identical connector pitch (2.5mm), position count (4), mounting type (through-hole right angle), and shrouding configuration (4-wall). Physical dimensions and PCB footprints are equivalent.

Q: What is the primary reason for substitution?

A: The DF1BZ-4P-2.5DS(18) is obsolete and no longer manufactured. The DF1BZ-4P-2.5DS is the active production equivalent from the same manufacturer with identical specifications.

Q: Are the electrical ratings identical?

A: Yes. Both parts carry 150V voltage rating and operate across the same temperature range (-35°C to 85°C). Contact materials, finishes, and current-carrying specifications are equivalent.

Q: What is the difference in Moisture Sensitivity Level?

A: The original part lists MSL as Not Applicable, while the substitute carries MSL 1 (Unlimited). MSL 1 indicates the part has no moisture sensitivity restrictions and requires no special storage or handling precautions.

Q: Can I use the substitute in legacy equipment designed for the original part?

A: Yes. The substitute part maintains full functional and mechanical compatibility. No design modifications or PCB changes are required.

Q: What is the packaging difference?

A: The substitute is supplied in Bulk packaging. Confirm packaging requirements for your application before ordering.

Q: Are both parts RoHS compliant?

A: Yes. Both parts are ROHS3 compliant and suitable for applications with RoHS requirements.

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