Amphenol ICC 77313-822-50LF Rectangular Connector - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 77313-822-50LF is an active rectangular connector header designed for through-hole mounting applications. This 50-position, 2-row connector operates across a temperature range of -65°C to 130°C and is classified as a breakaway header with unshrouded design. The part is RoHS compliant and carries an MSL rating of 1 (Unlimited), making it suitable for standard PCB assembly environments. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design flexibility is required.

Key Parameters

Parameter	Value
Connector Type	Header, Breakaway
Contact Type	Male Pin
Number of Positions	50
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Current Rating	3A per Contact
Operating Temperature	-65°C ~ 130°C
RoHS Status	RoHS Compliant
Material Flammability Rating	UL94 V-0

Substitute Part Grouping Explanation

Substitution eligibility for the 77313-822-50LF is determined by strict alignment of the following critical parameters:

Connector Type: Header, Breakaway
Contact Type: Male Pin
Number of Positions: 50
Number of Rows: 2
Pitch - Mating: 0.100" (2.54mm)
Row Spacing - Mating: 0.100" (2.54mm)
Mounting Type: Through Hole
Termination: Solder
Current Rating: 3A per Contact
Material Flammability Rating: UL94 V-0
RoHS Compliance: Required

The TE Connectivity AMP Connectors part number 7-146252-5 meets all mandatory substitution criteria. Both parts share identical mating pitch, position count, row configuration, and electrical ratings. Variations in contact length, insulation height, and operating temperature maximum do not preclude substitution when application requirements fall within the substitute part's specifications.

Parameter Comparison

Parameter	77313-822-50LF (Amphenol ICC)	7-146252-5 (TE Connectivity)	Compatibility Notes
Connector Type	Header, Breakaway	Header, Breakaway	Identical
Contact Type	Male Pin	Male Pin	Identical
Number of Positions	50	50	Identical
Number of Rows	2	2	Identical
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	Identical
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	Identical
Mounting Type	Through Hole	Through Hole	Identical
Termination	Solder	Solder	Identical
Current Rating	3A per Contact	3A	Identical
Operating Temperature	-65°C ~ 130°C	-65°C ~ 105°C	Substitute has lower maximum; verify application requirement
Contact Length - Mating	0.305" (7.75mm)	0.318" (8.08mm)	Minor variation; verify PCB pad depth
Contact Length - Post	0.120" (3.05mm)	0.125" (3.18mm)	Minor variation; verify solder joint clearance
Insulation Height	0.100" (2.54mm)	0.090" (2.29mm)	Substitute is lower; verify board-to-board spacing
Contact Material	Phosphor Bronze	Copper Alloy	Different base materials; both support 3A rating
Insulation Material	Thermoplastic	Liquid Crystal Polymer (LCP)	Different materials; both UL94 V-0 rated
RoHS Status	RoHS Compliant	RoHS Compliant	Identical
Material Flammability Rating	UL94 V-0	UL94 V-0	Identical

Engineering Selection Recommendations

Both the 77313-822-50LF and 7-146252-5 are active products with RoHS compliance and UL94 V-0 flammability ratings. Selection between these parts should be based on the following criteria:

Primary Part (77313-822-50LF): Select when operating temperature requirements exceed 105°C or when thermoplastic insulation material is specified in design documentation.

Substitute Part (7-146252-5): Select when operating temperature remains within -65°C to 105°C range and LCP insulation material is acceptable. This part offers equivalent electrical performance and compliance certifications.

Both parts support identical mating pitch (0.100"), position count (50), row configuration (2), and current rating (3A per contact). Physical dimension variations in contact length and insulation height require verification against specific PCB layout and board-to-board spacing constraints before final selection.

Frequently Asked Questions (FAQ)

Q: Can the 7-146252-5 be used as a direct replacement for the 77313-822-50LF in all applications?

A: The 7-146252-5 is electrically and mechanically compatible for applications operating within -65°C to 105°C. If your application requires operation above 105°C, the primary part (77313-822-50LF) is required. Physical dimensions differ slightly; verify PCB pad depth and board-to-board spacing before substitution.

Q: What are the key differences between these two connector headers?

A: The primary differences are operating temperature maximum (130°C vs. 105°C), insulation material (Thermoplastic vs. LCP), contact material (Phosphor Bronze vs. Copper Alloy), and minor variations in contact length and insulation height. All other critical parameters—pitch, position count, current rating, and flammability rating—are identical.

Q: Are both parts RoHS compliant?

A: Yes, both the 77313-822-50LF and 7-146252-5 are RoHS compliant with UL94 V-0 flammability ratings.

Q: Does the difference in insulation height affect compatibility?

A: The 7-146252-5 has an insulation height of 0.090" (2.29mm) compared to 0.100" (2.54mm) for the 77313-822-50LF. This difference may affect board-to-board spacing in stacked connector applications. Verify your specific PCB layout requirements before substitution.

Q: What is the difference in packaging between these parts?

A: The 77313-822-50LF is supplied in Bag packaging, while the 7-146252-5 is supplied in Bulk packaging. This affects handling and inventory management but does not impact electrical or mechanical performance.

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