DF33-4DP-3.3DSA Equivalent & Substitute Parts

Part Overview

The DF33-4DP-3.3DSA is a rectangular connector header manufactured by Hirose Electric Co Ltd, designed for through-hole mounting in board-to-cable/wire applications. This connector features a 4-position vertical configuration with 3.3mm pitch spacing and shrouded design with 4-wall protection. The part is currently listed as obsolete, making identification of compatible substitute components essential for ongoing production support and design continuity.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.130" (3.30mm)
Number of Positions	4
Number of Rows	2
Row Spacing - Mating	0.228" (5.80mm)
Shrouding	Shrouded - 4 Wall
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Locking Ramp
Voltage Rating	500V
Operating Temperature	-35°C ~ 85°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

The DF33C-4DP-3.3DSA(24) qualifies as a direct substitute based on the following critical parameters:

Matching Electrical & Mechanical Specifications:

Identical pitch spacing: 0.130" (3.30mm)
Identical number of positions and row configuration: 4 positions, 2 rows
Identical row spacing: 0.228" (5.80mm)
Identical shrouding design: Shrouded - 4 Wall
Identical mounting method: Through Hole with Solder termination
Identical fastening type: Locking Ramp
Identical voltage rating: 500V
Identical operating temperature range: -35°C ~ 85°C
Identical flammability rating: UL94 V-0
Identical mated stacking height: 17.6mm

Key Differences:

Product Status: DF33C-4DP-3.3DSA(24) is Active (vs. Obsolete)
Series designation: EnerBee™ DF33C (vs. EnerBee™ DF33)
Contact material: Brass (vs. Copper Alloy)
Insulation material: Polyamide (PA), Nylon (vs. Polyamide (PA), Nylon, Glass Filled)
Insulation color: Beige (vs. Natural)
Packaging: Tray (vs. unspecified)
RoHS compliance level: ROHS3 Compliant (vs. RoHS Compliant)

Parameter Comparison

Parameter	DF33-4DP-3.3DSA	DF33C-4DP-3.3DSA(24)
Manufacturer	Hirose Electric Co Ltd	Hirose Electric Co Ltd
Category	Rectangular Connectors	Rectangular Connectors
Connector Type	Header	Header
Contact Type	Male Pin	Male Pin
Pitch - Mating	0.130" (3.30mm)	0.130" (3.30mm)
Number of Positions	4	4
Number of Rows	2	2
Row Spacing - Mating	0.228" (5.80mm)	0.228" (5.80mm)
Style	Board to Cable/Wire	Board to Cable/Wire
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Fastening Type	Locking Ramp	Locking Ramp
Contact Length - Post	0.118" (3.00mm)	0.118" (3.00mm)
Insulation Height	0.453" (11.50mm)	0.453" (11.50mm)
Contact Shape	Square	Square
Contact Finish - Mating	Tin	Tin
Contact Finish - Post	Tin	Tin
Voltage Rating	500V	500V
Mated Stacking Heights	17.6mm	17.6mm
Operating Temperature	-35°C ~ 85°C	-35°C ~ 85°C
Material Flammability Rating	UL94 V-0	UL94 V-0
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040
Product Status	Obsolete	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant

Engineering Selection Recommendations

The DF33C-4DP-3.3DSA(24) is the appropriate substitute for the obsolete DF33-4DP-3.3DSA. Selection is based on the following engineering criteria:

Functional Compatibility: All critical electrical and mechanical parameters are identical, ensuring direct form-fit-function replacement in existing PCB designs and cable assemblies.

Product Status: The substitute part is in Active production status, providing supply chain continuity and long-term availability compared to the Obsolete original part.

Compliance & Certifications: Both parts maintain UL94 V-0 flammability rating and identical voltage/temperature specifications. The substitute achieves ROHS3 compliance, meeting current regulatory requirements.

Material Considerations: The substitute uses Brass contacts instead of Copper Alloy and standard Polyamide/Nylon insulation instead of glass-filled variant. These material changes do not affect electrical performance or mechanical compatibility within the specified operating parameters.

Packaging: The substitute is supplied in Tray packaging, suitable for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can DF33C-4DP-3.3DSA(24) be used as a direct replacement for DF33-4DP-3.3DSA in existing designs?

A: Yes. The substitute maintains identical pitch spacing (3.30mm), position count (4), row configuration (2 rows), row spacing (5.80mm), shrouding design, mounting method, and electrical ratings. PCB footprints and mating connector specifications remain compatible.

Q: What are the material differences between these parts?

A: The original uses Copper Alloy contacts with glass-filled Polyamide insulation. The substitute uses Brass contacts with standard Polyamide/Nylon insulation. Both materials meet the 500V voltage rating and UL94 V-0 flammability requirement.

Q: Does the change in RoHS compliance level affect compatibility?

A: No. ROHS3 compliance is a superset of RoHS compliance, indicating the substitute meets current and enhanced regulatory standards. This represents an improvement in regulatory status.

Q: Are the mating dimensions identical?

A: Yes. Pitch spacing, row spacing, mated stacking height, and all contact dimensions remain unchanged, ensuring compatibility with existing mating connectors and cable assemblies.

Q: What is the significance of the packaging change to Tray?

A: Tray packaging is standard for high-volume production and automated assembly. This change does not affect the connector's electrical or mechanical performance, only handling and logistics.

Q: Is the operating temperature range the same?

A: Yes. Both parts operate across -35°C to 85°C, maintaining identical thermal performance specifications.

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