Equivalent & Substitute Parts for Molex 0359780310

Part Overview

The Molex 0359780310 is a rectangular connector header designed for through-hole mounting applications. This connector features a 3-position, single-row configuration with 0.156" (3.96mm) pitch spacing, suitable for board-to-cable/wire connections. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement planning.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	3
Number of Rows	1
Pitch - Mating	0.156" (3.96mm)
Mounting Type	Through Hole
Termination	Solder
Style	Board to Cable/Wire
Shrouding	Shrouded - 1 Wall
Contact Shape	Square
Insulation Material	Polyamide (PA66), Nylon 6/6
Contact Material	Brass
Contact Finish - Mating	Tin
Contact Finish - Post	Tin
Overall Contact Length	0.575" (14.60mm)
Insulation Height	0.382" (9.70mm)
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the Molex 0359780310 is determined by strict alignment of the following critical parameters:

Connector type (Header)
Contact type (Male Pin)
Number of positions and rows (3 positions, 1 row)
Mating pitch (0.156" / 3.96mm)
Mounting method (Through Hole)
Termination type (Solder)
Shrouding configuration (Shrouded - 1 Wall)
Contact shape (Square)
Contact material and finish (Brass with Tin plating)
Insulation material compatibility (Polyamide or equivalent thermoplastic)
Flammability rating (UL94 V-0)
RoHS compliance (ROHS3)

The JST Sales America Inc. B3P-VH-B connector meets all mandatory substitution criteria. While secondary parameters such as insulation height, operating temperature range, and current/voltage ratings differ, these variations do not prevent functional equivalence for standard through-hole header applications.

Parameter Comparison

Parameter	Molex 0359780310	JST B3P-VH-B	Compatibility
Connector Type	Header	Header	Match
Contact Type	Male Pin	Male Pin	Match
Number of Positions	3	3	Match
Number of Rows	1	1	Match
Pitch - Mating	0.156" (3.96mm)	0.156" (3.96mm)	Match
Mounting Type	Through Hole	Through Hole	Match
Termination	Solder	Solder	Match
Style	Board to Cable/Wire	Board to Cable/Wire	Match
Shrouding	Shrouded - 1 Wall	Shrouded - 1 Wall	Match
Contact Shape	Square	Square	Match
Contact Material	Brass	Brass	Match
Contact Finish - Mating	Tin	Tin	Match
Contact Finish - Post	Tin	Tin	Match
Overall Contact Length	0.575" (14.60mm)	0.575" (14.60mm)	Match
Material Flammability Rating	UL94 V-0	UL94 V-0	Match
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Match
Insulation Height	0.382" (9.70mm)	0.370" (9.40mm)	Variation
Insulation Material	Polyamide (PA66), Nylon 6/6	Polybutylene Terephthalate (PBT), Glass Filled	Equivalent
Fastening Type	Friction Lock	Locking Ramp	Variation
Operating Temperature	Not specified	-25°C ~ 85°C	Specification provided
Current Rating	Not specified	10A	Specification provided
Voltage Rating	Not specified	250V	Specification provided
Product Status	Obsolete	Active	Active alternative available

Engineering Selection Recommendations

The JST Sales America Inc. B3P-VH-B rectangular connector is a direct functional equivalent to the obsolete Molex 0359780310. Both connectors satisfy identical requirements for connector type, contact configuration, pitch spacing, mounting method, and termination approach. Both maintain UL94 V-0 flammability compliance and ROHS3 certification status.

The B3P-VH-B connector offers the additional advantage of active product status, ensuring ongoing availability and supply chain continuity. The substitute part provides specified operating temperature range (-25°C ~ 85°C), current rating (10A), and voltage rating (250V), parameters not documented for the obsolete Molex part.

Minor variations exist in insulation material composition (PBT glass-filled versus PA66 nylon) and fastening mechanism (locking ramp versus friction lock), neither of which compromises functional equivalence for standard through-hole header applications. The insulation height difference of 0.012" (0.30mm) is within typical manufacturing tolerances for this connector category.

Frequently Asked Questions (FAQ)

Q: Can the JST B3P-VH-B directly replace the Molex 0359780310 in existing designs?

A: Yes. Both connectors share identical mating pitch (0.156" / 3.96mm), contact configuration (3 positions, 1 row, male pins), mounting method (through-hole solder), and shrouding design. The connectors are mechanically and electrically compatible for board-to-cable/wire applications.

Q: What is the significance of the different insulation materials?

A: The Molex part uses polyamide (PA66) nylon, while the JST substitute uses polybutylene terephthalate (PBT) with glass reinforcement. Both materials meet UL94 V-0 flammability requirements and provide equivalent electrical insulation properties for this application category.

Q: How do the fastening mechanisms differ?

A: The Molex 0359780310 uses friction lock fastening, while the JST B3P-VH-B employs a locking ramp mechanism. Both methods provide secure mating and are suitable for through-hole header applications. The fastening type does not affect electrical performance or mechanical compatibility.

Q: Why is the Molex part listed as obsolete?

A: Product obsolescence typically reflects manufacturer discontinuation decisions based on market demand and product lifecycle management. The JST B3P-VH-B represents an active alternative that maintains all critical functional parameters.

Q: Are there any compliance or certification differences?

A: Both connectors maintain identical RoHS3 compliance and UL94 V-0 flammability ratings. Both have moisture sensitivity level 1 (unlimited). No compliance barriers exist for substitution.

Q: What packaging options are available for the substitute part?

A: The JST B3P-VH-B is supplied in bulk packaging, with 4136 pieces currently in stock.

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