Molex 0760558603 Equivalent & Substitute Parts

Part Overview

The Molex 0760558603 is a 240-position backplane connector header with male pins for through-hole PCB mounting. This connector is part of the Impact 76055 series and features press-fit termination with gold-plated contacts rated for 30V operation across a temperature range of -55°C to 85°C. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring compatible connector solutions.

Key Parameters

Parameter	Value
Manufacturer Part Number	0760558603
Manufacturer	Molex
Category	Backplane Connectors
Connector Type	Header, Male Pins
Number of Positions	240
Pitch	0.053" (1.35mm)
Number of Rows	15
Number of Columns	16
Mounting Type	Through Hole
Termination	Press-Fit
Contact Finish	Gold
Contact Finish Thickness	30.0µin (0.76µm)
Color	Black
Operating Temperature	-55°C ~ 85°C
Voltage Rating	30V
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the Molex 0760558603 is determined by the following critical parameters:

Primary Compatibility Parameters:

Number of Positions: 240
Connector Type: Header, Male Pins
Mounting Type: Through Hole
Termination: Press-Fit
Number of Rows: 15
Number of Columns: 16
Contact Finish: Gold
Material Flammability Rating: UL94 V-0
RoHS Compliance: ROHS3 Compliant

Substitute Categories:

Category 1: Direct Molex Equivalents — Parts 0760555603 and 0760559603 maintain identical electrical and mechanical specifications to the original part, including pitch (0.053"/1.35mm), voltage rating (30V), and operating temperature range (-55°C to 85°C). These parts differ only in packaging and product status (Active vs. Obsolete).

Category 2: Cross-Manufacturer Alternatives — Parts 1934331-1, 1934332-1, 1934333-1, and 1934334-1 from TE Connectivity AMP Connectors provide functional equivalence with the same 240-position configuration, through-hole mounting, and press-fit termination. These parts operate at higher voltage (250V) and current (0.5A) ratings with an extended temperature range (-65°C to 90°C). The primary difference is pitch specification (0.075"/1.90mm vs. 0.053"/1.35mm), which affects PCB layout compatibility.

Parameter Comparison

Parameter	0760558603 (Main)	0760555603	0760559603	1934331-1	1934332-1	1934333-1	1934334-1
Manufacturer	Molex	Molex	Molex	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity
Number of Positions	240	240	240	240	240	240	240
Connector Type	Header, Male Pins	Header, Male Pins	Header, Male Pins	Header, Male Pins	Header, Male Pins	Header, Male Pins	Header, Male Pins
Pitch	0.053" (1.35mm)	0.053" (1.35mm)	0.053" (1.35mm)	0.075" (1.90mm)	0.075" (1.90mm)	0.075" (1.90mm)	0.075" (1.90mm)
Number of Rows	15	15	15	15	15	15	15
Number of Columns	16	16	16	16	16	16	16
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Press-Fit	Press-Fit	Press-Fit	Press-Fit	Press-Fit	Press-Fit	Press-Fit
Contact Finish	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Contact Finish Thickness	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)
Color	Black	Black	Black	Black	Black	Black	Black
Operating Temperature	-55°C ~ 85°C	-55°C ~ 85°C	-55°C ~ 85°C	-65°C ~ 90°C	-65°C ~ 90°C	-65°C ~ 90°C	-65°C ~ 90°C
Voltage Rating	30V	30V	30V	250V	250V	250V	250V
Current Rating	—	—	—	0.5A	0.5A	0.5A	0.5A
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	RoHS Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

For Direct Replacement (Same PCB Layout):

Use Molex 0760555603 or 0760559603 when PCB footprint and pitch specifications (0.053"/1.35mm) must remain unchanged. Both parts are active products with ROHS3 compliance and identical electrical and mechanical characteristics to the obsolete 0760558603. Selection between these two Molex alternatives depends on packaging requirements (Tray packaging available for both).

For Cross-Manufacturer Substitution (PCB Redesign Required):

TE Connectivity AMP Connectors parts 1934331-1, 1934332-1, 1934333-1, and 1934334-1 provide functional equivalence with enhanced electrical ratings (250V, 0.5A) and extended operating temperature range (-65°C to 90°C). These parts require PCB layout modification due to different pitch specification (0.075"/1.90mm). All four TE Connectivity alternatives are active products with UL94 V-0 flammability rating and RoHS compliance. Selection among these four parts depends on specific compliance certifications required for the application (ROHS3 vs. RoHS Compliant status varies by part number).

Frequently Asked Questions (FAQ)

Q: Can I use Molex 0760555603 or 0760559603 as direct drop-in replacements for the obsolete 0760558603?

A: Yes. Both parts maintain identical pitch (0.053"/1.35mm), position count (240), row/column configuration (15×16), voltage rating (30V), and operating temperature range (-55°C to 85°C). No PCB modification is required. Both are active products with ROHS3 compliance.

Q: What is the main difference between the Molex and TE Connectivity substitute options?

A: Molex alternatives (0760555603, 0760559603) preserve the original pitch specification (0.053"/1.35mm) for direct PCB compatibility. TE Connectivity alternatives (1934331-1 through 1934334-1) use a larger pitch (0.075"/1.90mm), requiring PCB redesign but offering higher voltage (250V) and current (0.5A) ratings with extended temperature range (-65°C to 90°C).

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed meet RoHS requirements. Molex parts 0760555603 and 0760559603 are ROHS3 Compliant. TE Connectivity parts 1934331-1 and 1934333-1 are ROHS3 Compliant, while 1934332-1 and 1934334-1 are RoHS Compliant.

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

A: Molex 0760555603 and 0760559603 are supplied in Tray packaging. TE Connectivity parts 1934331-1, 1934332-1, 1934333-1, and 1934334-1 are supplied in Tube packaging.

Q: Can I use TE Connectivity parts without modifying my PCB?

A: No. TE Connectivity alternatives use 0.075" (1.90mm) pitch compared to the original 0.053" (1.35mm) pitch. PCB layout modification is required for these parts.

Q: Which substitute part should I select if my application requires the highest voltage and current ratings?

A: All four TE Connectivity alternatives (1934331-1, 1934332-1, 1934333-1, 1934334-1) provide identical electrical ratings: 250V voltage rating and 0.5A current rating. Selection should be based on specific RoHS compliance certification requirements for your application.

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