Equivalent & Substitute Parts for 77313-124-04LF

Part Overview

The 77313-124-04LF is an Amphenol ICC BERGSTIK® rectangular connector header designed for through-hole mounting applications. This 4-position, 2-row connector operates at 0.100" (2.54mm) pitch and is rated for 3A per contact with an operating temperature range of -65°C to 130°C. The part is Active status and RoHS Compliant, making it suitable for industrial and commercial applications requiring board-to-board or cable interconnection.

Equivalent and substitute parts are identified when design flexibility, supply chain optimization, or application-specific requirements necessitate alternative connector solutions that maintain functional compatibility within the same category and electrical specifications.

Key Parameters

Parameter	77313-124-04LF
Manufacturer	Amphenol ICC
Series	BERGSTIK®
Connector Type	Header, Breakaway
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	4
Number of Rows	2
Mounting Type	Through Hole
Termination	Solder
Current Rating	3A per Contact
Operating Temperature	-65°C ~ 130°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitute parts for the 77313-124-04LF are qualified based on the following critical parameters that determine functional interchangeability:

Pitch - Mating: 0.100" (2.54mm) — must match exactly for mechanical compatibility
Number of Positions: 4 — connector capacity requirement
Number of Rows: 2 — physical layout configuration
Mounting Type: Through Hole — PCB assembly method
Termination: Solder — connection method
Contact Type: Male Pin — gender specification
Style: Board to Board or Cable — application compatibility
Shrouding: Unshrouded — physical form factor
Fastening Type: Push-Pull — mating mechanism

All substitute parts listed meet these core parameters. Variations in contact length, insulation height, contact material, contact finish, and operating temperature ranges are noted but do not preclude substitution when application requirements fall within the substitute part's specifications.

Parameter Comparison

Parameter	77313-124-04LF (Amphenol ICC)	826632-2 (TE Connectivity)	929665-09-02-I (3M)	BBD-102-G-A (Samtec)	M20-9760246 (Harwin)
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Number of Positions	4	4	4	4	4
Number of Rows	2	2	2	2	2
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Shrouding	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Operating Temperature	-65°C ~ 130°C	-65°C ~ 105°C	-40°C ~ 105°C	-55°C ~ 125°C	-40°C ~ 105°C
Current Rating	3A per Contact	5A	2.5A	Not Specified	3A per Contact
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	Not Specified	UL94 V-0
RoHS Status	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Not Applicable	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

826632-2 (TE Connectivity AMP Connectors AMPMODU Mod II): This part is ROHS3 Compliant with Active product status. It provides higher current rating (5A) compared to the main part, making it suitable for applications requiring increased current capacity. Operating temperature range is -65°C to 105°C, which covers most industrial applications but does not extend to the upper limit of the main part (130°C). Select this substitute when higher current capacity is required and maximum operating temperature does not exceed 105°C.

929665-09-02-I (3M Series 929): This part is RoHS Compliant with Active product status. Operating temperature range is -40°C to 105°C with current rating of 2.5A. This substitute is suitable for applications where the lower current requirement is acceptable and operating temperature remains above -40°C. The 3M connector provides a cost-effective alternative for standard industrial applications.

BBD-102-G-A (Samtec Inc. BBD Series): This part is ROHS3 Compliant with Active product status. Operating temperature range is -55°C to 125°C, which provides extended low-temperature capability. Material flammability rating is not specified. Select this substitute when extended low-temperature operation is required and the unspecified current rating is verified as acceptable for the application.

M20-9760246 (Harwin Inc. M20 Series): This part is ROHS3 Compliant with Active product status. It features a cuttable connector design with current rating of 3A per contact, matching the main part specification. Operating temperature range is -40°C to 105°C. This substitute is suitable for applications requiring modular connector flexibility and standard current ratings, with the caveat that minimum operating temperature is -40°C rather than -65°C.

Frequently Asked Questions (FAQ)

Q: Can I use 826632-2 as a direct replacement for 77313-124-04LF in all applications?

A: The 826632-2 is mechanically and electrically compatible for applications where operating temperature does not exceed 105°C and the higher current rating (5A vs. 3A) is acceptable. If your application requires operation at temperatures above 105°C or specifically requires the 3A rating, verify compatibility before substitution.

Q: What is the primary difference between the 929665-09-02-I and the main part?

A: The 929665-09-02-I has a lower current rating (2.5A vs. 3A) and a narrower operating temperature range (-40°C to 105°C vs. -65°C to 130°C). Use this substitute only when your application operates within these narrower specifications.

Q: Why does BBD-102-G-A have a circular contact shape while others have square contacts?

A: Contact shape is a physical characteristic that does not affect electrical compatibility for this connector category. Both square and circular contacts perform the same electrical function at 0.100" (2.54mm) pitch. The choice between them depends on mechanical design preferences and PCB pad layout compatibility.

Q: Is the M20-9760246 suitable for applications requiring -65°C operation?

A: No. The M20-9760246 has a minimum operating temperature of -40°C. For applications requiring -65°C operation, use the main part 77313-124-04LF or 826632-2 (which operates to -65°C).

Q: Do all substitute parts meet RoHS compliance requirements?

A: Yes. All substitute parts listed are either RoHS Compliant or ROHS3 Compliant, meeting current environmental regulations. The main part is RoHS Compliant, and all substitutes maintain or exceed this compliance level.

Q: Can I mix and match these connectors in the same assembly?

A: While all parts are mechanically compatible at the 0.100" (2.54mm) pitch, mixing different manufacturers' connectors in the same assembly may introduce inconsistencies in contact resistance, mating force, and mechanical tolerance stack-up. Maintain consistency within a single assembly when possible.

Q: What should I verify before selecting a substitute part?

A: Verify that the substitute part's operating temperature range, current rating, and contact finish specifications meet your application requirements. Confirm PCB pad layout compatibility with the substitute's contact length and insulation height specifications. Review any differences in contact material and finish that may affect long-term reliability in your specific environment.

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