Molex 0395121508 Terminal Block Header - Equivalent & Substitute Parts

Part Overview

The Molex 0395121508 is an 8-position terminal block header with male pins, shrouded on four sides, featuring a 0.150" (3.81mm) pitch and 90° right-angle orientation for through-hole mounting. This component is part of the Eurostyle ESE 39512 series and is currently in active production status. Alternative equivalent parts may be required due to supply chain considerations, design standardization across manufacturing facilities, or specific application requirements where substitute components meet identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Number of Positions	8
Pitch	0.150" (3.81mm)
Header Orientation	90°, Right Angle
Type	Header, Male Pins, Shrouded (4 Side)
Mounting Type	Through Hole
Termination Style	Solder
Current Rating (UL)	8 A
Voltage Rating (UL)	300 V
Operating Temperature	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0395121508 is determined by strict equivalence across the following critical parameters:

Number of positions: 8
Pitch spacing: 0.150" (3.81mm)
Header orientation: 90° right angle
Pin configuration: Male pins with 4-side shrouding
Mounting method: Through-hole solder termination
Electrical ratings: Minimum 8 A current (UL), minimum 300 V (UL)
Flammability compliance: UL94 V-0
RoHS compliance: ROHS3 Compliant

The Phoenix Contact 1722040 meets all substitution criteria within these parameters. Mechanical variations such as contact tail length, insulation height, and housing material composition do not affect functional interchangeability when all electrical and positional specifications align.

Parameter Comparison

Parameter	Molex 0395121508	Phoenix Contact 1722040	Compatibility
Manufacturer	Molex	Phoenix Contact	Different manufacturer
Number of Positions	8	8	Equivalent
Pitch	0.150" (3.81mm)	0.150" (3.81mm)	Equivalent
Header Orientation	90°, Right Angle	90°, Right Angle	Equivalent
Type	Header, Male Pins, Shrouded (4 Side)	Header, Male Pins, Shrouded (4 Side)	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Termination Style	Solder	Solder	Equivalent
Current - UL	8 A	8 A	Equivalent
Voltage - UL	300 V	300 V	Equivalent
Color	Black	Black	Equivalent
Material Flammability Rating	UL94 V-0	UL94 V-0	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Contact Tail Length	0.138" (4.60mm)	0.102" (2.60mm)	Different
Insulation Height	0.270" (6.86mm)	0.272" (6.91mm)	Functionally equivalent
Housing Material	Polyamide (PA66), Nylon 6/6	Liquid Crystal Polymer (LCP)	Different material, same performance class
Contact Mating Finish	Gold	Tin	Different finish

Engineering Selection Recommendations

Both the Molex 0395121508 and Phoenix Contact 1722040 are active production components with ROHS3 compliance and UL94 V-0 flammability certification. Selection between these parts should be based on:

PCB layout constraints: The Phoenix Contact 1722040 has a shorter contact tail length (0.102" vs. 0.138"), which may affect solder joint depth and PCB trace routing in designs with tight spacing requirements.
Contact finish requirements: The Molex part features gold plating, while the Phoenix Contact part uses tin plating. Gold plating provides enhanced corrosion resistance in high-humidity or corrosive environments; tin plating is suitable for standard industrial applications.
Housing material compatibility: The Molex part uses polyamide (PA66/Nylon 6/6), while the Phoenix Contact part uses liquid crystal polymer (LCP). Both materials meet UL94 V-0 requirements; LCP offers superior dimensional stability and lower moisture absorption.
Supply chain availability: Current inventory shows 1124 units of the Phoenix Contact part versus 834 units of the Molex part.

Frequently Asked Questions (FAQ)

Q: Can the Phoenix Contact 1722040 be used as a direct replacement for the Molex 0395121508 on existing PCBs?

A: Yes, provided that the PCB layout accommodates the shorter contact tail length of the Phoenix Contact part (0.102" vs. 0.138"). The pitch, position count, mounting type, and electrical ratings are identical. Verify that solder joint formation and trace routing are not affected by the dimensional difference.

Q: What is the difference between the contact finishes (gold vs. tin)?

A: Gold plating provides superior corrosion resistance and is preferred in high-humidity, salt-spray, or chemically aggressive environments. Tin plating is suitable for standard industrial and commercial applications with normal environmental conditions. Both finishes are compatible with standard solder processes.

Q: Are there any compliance or certification differences between these parts?

A: Both parts are ROHS3 compliant and carry UL94 V-0 flammability certification. Both meet the same electrical ratings (8 A at 300 V UL). No compliance barriers exist for substitution.

Q: How do the housing materials affect performance?

A: Polyamide (PA66/Nylon 6/6) and liquid crystal polymer (LCP) both meet UL94 V-0 requirements. LCP exhibits lower moisture absorption and superior dimensional stability across temperature ranges. For standard applications, both materials perform equivalently. In high-temperature or high-humidity environments, LCP may offer marginal advantages in long-term dimensional consistency.

Q: What should be verified before substituting these parts in production?

A: Verify PCB layout compatibility with the contact tail length difference. Confirm that the connector mating interface (if applicable) accepts both part geometries. Perform solder reflow profile validation to ensure proper joint formation with the different contact tail lengths. No electrical or functional testing is required beyond standard PCB assembly quality assurance.

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