Molex 0761651808 Equivalent & Substitute Parts

Part Overview

The Molex 0761651808 is a 72-position connector header with male pins designed for through-hole PCB mounting in backplane applications. This Impact series connector features press-fit termination and gold-plated contacts rated for 30V operation across an extended temperature range of -55°C to 85°C. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified to address inventory availability, alternative mounting configurations, or specific application requirements while maintaining core electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	0761651808
Manufacturer	Molex
Category	Backplane Connectors
Connector Type	Header, Male Pins
Number of Positions	72
Pitch	0.053" (1.35mm)
Number of Rows	9
Number of Columns	8
Mounting Type	Through Hole
Termination	Press-Fit
Contact Finish	Gold (30.0µin / 0.76µm)
Voltage Rating	30V
Operating Temperature	-55°C ~ 85°C
Material Flammability	UL94 V-0
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

The TE Connectivity AMP Connectors part 2057764-3 is identified as a substitute based on the following alignment criteria:

Matching Parameters:

72-position connector header configuration
Male pin connector type
Impact series connector style
9 rows × 8 columns matrix layout
Through-hole mounting capability
Press-fit termination method
Gold contact finish (30.0µin thickness)
UL94 V-0 flammability rating
ROHS3 compliance
Unlimited moisture sensitivity level (MSL 1)
Active product status

Differing Parameters:

Pitch: 0.075" (1.90mm) versus 0.053" (1.35mm)
Mounting configuration: Board Edge, Right Angle versus standard Through Hole
Voltage rating: 250VAC versus 30V
Operating temperature range: -65°C ~ 90°C versus -55°C ~ 85°C
Current rating: 0.5A per contact (specified versus unspecified)
Contact layout: 48 Signal, 24 Ground versus 24 Differential Pairs

Substitution is valid when application requirements accommodate the larger pitch spacing and alternative mounting orientation.

Parameter Comparison

Parameter	Molex 0761651808	TE Connectivity 2057764-3
Connector Type	Header, Male Pins	Header, Male Pins
Number of Positions	72	72
Number of Rows	9	9
Number of Columns	8	8
Pitch	0.053" (1.35mm)	0.075" (1.90mm)
Mounting Type	Through Hole	Board Edge, Through Hole, Right Angle
Termination	Press-Fit	Press-Fit
Contact Finish	Gold (30.0µin)	Gold (30.0µin)
Voltage Rating	30V	250VAC
Operating Temperature	-55°C ~ 85°C	-65°C ~ 90°C
Material Flammability	UL94 V-0	UL94 V-0
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active

Engineering Selection Recommendations

Both the Molex 0761651808 and TE Connectivity 2057764-3 maintain Active product status with full ROHS3 compliance and equivalent flammability certification. Selection between these parts depends on specific application constraints:

The Molex 0761651808 is the primary choice for applications requiring the 0.053" (1.35mm) pitch spacing and standard through-hole vertical mounting orientation. This configuration supports the 24 differential pair contact layout specification.

The TE Connectivity 2057764-3 serves as a substitute when board space or mounting geometry requires the larger 0.075" (1.90mm) pitch spacing and right-angle board edge mounting configuration. This part provides enhanced voltage rating (250VAC) and extended low-temperature operating capability (-65°C minimum). The 48 signal, 24 ground contact layout accommodates different signal distribution requirements.

Both parts satisfy UL94 V-0 material requirements and maintain unlimited moisture sensitivity ratings suitable for standard storage and handling conditions.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 2057764-3 directly replace the Molex 0761651808 in existing designs?

A: Direct replacement is not possible without PCB redesign. The pitch difference (0.075" versus 0.053") and right-angle mounting orientation of the TE part require modification to hole spacing and mounting location. Substitution is valid only when the application design can accommodate these dimensional changes.

Q: What is the significance of the pitch difference between these connectors?

A: Pitch determines the center-to-center spacing between adjacent contact positions. The Molex part uses 0.053" (1.35mm) pitch for higher density applications, while the TE part uses 0.075" (1.90mm) pitch, resulting in larger overall connector footprint. PCB layout and available board space determine which pitch is suitable.

Q: Are both parts suitable for the same voltage applications?

A: The Molex 0761651808 is rated for 30V operation. The TE Connectivity 2057764-3 is rated for 250VAC, providing higher voltage capability. The TE part can be used in applications requiring the Molex part's voltage rating, but the Molex part cannot substitute in higher voltage applications.

Q: What mounting differences exist between these connectors?

A: The Molex 0761651808 uses standard through-hole vertical mounting perpendicular to the PCB. The TE Connectivity 2057764-3 uses board edge, right-angle mounting where the connector body is positioned parallel to the PCB edge. This affects PCB layout, available board space, and cable routing.

Q: Do both connectors support the same contact layout configurations?

A: The Molex part specifies 24 differential pairs. The TE part specifies 48 signal contacts with 24 ground contacts. These represent different signal distribution architectures. Application requirements determine which contact layout is appropriate.

Q: Are there packaging differences between these parts?

A: The Molex 0761651808 is supplied in Tray packaging. The TE Connectivity 2057764-3 is supplied in Box packaging. Packaging affects handling, storage, and integration into assembly processes but does not affect electrical or mechanical performance.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message