Molex 0050304408 Rectangular Connector - Equivalent & Substitute Parts

Part Overview

The Molex 0050304408 is a 5-position receptacle connector with 0.156" (3.96mm) pitch, designed for through-hole PCB mounting with solder termination. This connector is part of the KK396 and 2145 series and is classified as obsolete. Due to its obsolete status, identifying active equivalent parts is essential for ongoing production, maintenance, and new design implementations where this connector type is required.

Key Parameters

Parameter	Value
Connector Type	Receptacle, Bottom Entry
Number of Positions	5
Pitch - Mating	0.156" (3.96mm)
Contact Type	Female Socket
Mounting Type	Through Hole
Termination	Solder
Voltage Rating	600V
Current Rating	4A
Operating Temperature Range	-40°C ~ 80°C
Contact Finish - Mating	Tin
Fastening Type	Locking Ramp
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of rectangular connectors is determined by strict alignment of electrical and mechanical parameters. The following criteria establish whether the Molex 0009484051 qualifies as a substitute for the 0050304408:

Critical Matching Parameters:

Connector type: Receptacle, bottom entry configuration
Number of positions: 5 positions
Pitch specification: 0.156" (3.96mm) mating pitch
Contact type: Female socket
Mounting method: Through-hole PCB mounting
Termination method: Solder
Voltage rating: 600V
Fastening mechanism: Locking ramp

Allowable Variations:

Current rating: 4A (original) to 4.5A (substitute) — higher rating is acceptable
Operating temperature: -40°C ~ 80°C (original) to -40°C ~ 105°C (substitute) — extended range is acceptable
Contact finish thickness: 100.0µin to 60.0µin — both meet tin plating requirements
Material flammability: UL94 V-2 to UL94 V-0 — improved rating is acceptable
Product status: Obsolete to Active — active status enables continued supply

Parameter Comparison

Parameter	0050304408 (Original)	0009484051 (Substitute)	Compatibility
Manufacturer	Molex	Molex	Match
Connector Type	Receptacle, Bottom Entry	Receptacle, Bottom Entry	Match
Number of Positions	5	5	Match
Pitch - Mating	0.156" (3.96mm)	0.156" (3.96mm)	Match
Contact Type	Female Socket	Female Socket	Match
Mounting Type	Through Hole	Through Hole	Match
Termination	Solder	Solder	Match
Voltage Rating	600V	600V	Match
Current Rating (Amps)	4A	4.5A	Compatible (higher rating)
Operating Temperature	-40°C ~ 80°C	-40°C ~ 105°C	Compatible (extended range)
Contact Finish - Mating	Tin	Tin	Match
Contact Finish Thickness - Mating	100.0µin (2.54µm)	60.0µin (1.52µm)	Compatible (both tin plated)
Fastening Type	Locking Ramp	Locking Ramp	Match
Insulation Height	0.449" (11.40mm)	0.449" (11.40mm)	Match
Contact Length - Post	0.160" (4.06mm)	0.160" (4.06mm)	Match
Material Flammability Rating	UL94 V-2	UL94 V-0	Compatible (improved rating)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Product Status	Obsolete	Active	Substitute available

Engineering Selection Recommendations

The Molex 0009484051 is a direct functional substitute for the obsolete 0050304408. Both connectors maintain identical mechanical and electrical specifications for the critical parameters that define connector compatibility: 5-position configuration, 0.156" pitch, receptacle bottom-entry design, through-hole solder termination, and 600V/4A electrical ratings.

The 0009484051 offers improvements over the original part: active product status ensures ongoing availability, extended operating temperature range (-40°C to 105°C versus -80°C), higher current rating (4.5A versus 4A), and superior material flammability rating (UL94 V-0 versus V-2). Both parts maintain ROHS3 compliance and identical physical dimensions for PCB mounting.

Selection of the 0009484051 is appropriate for direct replacement in existing designs and for new applications requiring this connector type.

Frequently Asked Questions (FAQ)

Q: Can the 0009484051 be used as a direct replacement for the 0050304408 in existing PCB designs?

A: Yes. Both connectors share identical mating pitch (0.156"), number of positions (5), mounting type (through-hole), and termination method (solder). Physical dimensions and contact configurations are equivalent, enabling direct PCB layout compatibility without modification.

Q: What are the key differences between these two connectors?

A: The primary differences are product status (obsolete versus active), operating temperature range (-40°C to 80°C versus -40°C to 105°C), current rating (4A versus 4.5A), and material flammability rating (UL94 V-2 versus UL94 V-0). The substitute part offers enhanced performance specifications.

Q: Are there any electrical performance differences that would affect circuit operation?

A: No. Both connectors are rated for 600V and maintain equivalent contact resistance and signal integrity characteristics. The higher current rating of the substitute part (4.5A) does not introduce any incompatibility with circuits designed for the original 4A specification.

Q: Does the difference in contact finish thickness affect connector reliability?

A: No. Both parts use tin plating on mating contacts. The thickness difference (100.0µin versus 60.0µin) remains within acceptable ranges for tin-plated connectors and does not compromise contact performance or service life.

Q: Is the improved flammability rating (UL94 V-0) a concern for compatibility?

A: No. An improved flammability rating indicates enhanced material performance and does not create any compatibility issues. The substitute part meets or exceeds all safety requirements of the original design.

Q: What is the inventory status for each part?

A: The original 0050304408 has 885 pieces in stock but is obsolete. The substitute 0009484051 has 844 pieces in stock and is an active product with ongoing availability.

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