Amphenol ICC 77311-118-02 Rectangular Connector Header — Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 77311-118-02 is a vertical through-hole rectangular connector header with 2 positions at 0.100" (2.54mm) pitch, designed for board-to-board applications. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design work and production requirements. The connector features male pins with gold or gold GXT™ mating contact finish, phosphor bronze contact material, and a current rating of 3A per contact. Active equivalent models and manufacturer-recommended substitutes are available from Amphenol ICC, Molex, 3M, and Preci-Dip.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	2
Number of Rows	1
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold or Gold, GXT™
Current Rating	3A per Contact
Operating Temperature	-65°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the 77311-118-02 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

Pitch - Mating: 0.100" (2.54mm)
Number of Positions: 2
Number of Rows: 1
Connector Type: Header
Contact Type: Male Pin
Mounting Type: Through Hole
Termination: Solder
Fastening Type: Push-Pull
Material Flammability Rating: UL94 V-0
Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variations:

Contact Finish - Mating: Gold, Gold GXT™, or Tin (all acceptable for 2.54mm pitch headers)
Contact Finish - Post: Tin, Tin-Lead (both acceptable for solder termination)
Contact Material: Phosphor Bronze or Brass (both acceptable for this connector class)
Insulation Material: Thermoplastic or Polyamide (PA) Nylon, Glass Filled (both acceptable)
Operating Temperature Range: Must encompass or match the -65°C ~ 125°C specification
Current Rating: 3A per contact or higher

Substitute parts are grouped into two categories: direct Amphenol ICC equivalents (same manufacturer, active status) and manufacturer-recommended alternatives (Molex, 3M, Preci-Dip) that meet all critical parameters.

Parameter Comparison

Part Number	Manufacturer	Product Status	Pitch (mm)	Positions	Rows	Contact Type	Mating Finish	Post Finish	Current (A)	Temp Range (°C)	RoHS Status
77311-118-02	Amphenol ICC	Obsolete	2.54	2	1	Male Pin	Gold/GXT™	Tin-Lead	3	-65 to 125	Non-compliant
77311-118-02LF	Amphenol ICC	Active	2.54	2	1	Male Pin	Gold/GXT™	Tin	3	-65 to 125	Compliant
0050291692	Molex	Active	2.54	2	1	Male Pin	Gold	Tin	—	—	ROHS3 Compliant
0050291883	Molex	Active	2.54	2	1	Male Pin	Gold	Tin	—	—	ROHS3 Compliant
0423751922	Molex	Active	2.54	2	1	Male Pin	Tin	Tin	—	—	ROHS3 Compliant
0423752486	Molex	Active	2.54	2	1	Male Pin	Gold	Tin	—	—	ROHS3 Compliant
0423752521	Molex	Active	2.54	2	1	Male Pin	Gold	Tin	—	—	ROHS3 Compliant
2302-6111-TP	3M	Active	2.54	2	1	Male Pin	Tin-Lead	Tin-Lead	3	-55 to 105	Non-compliant
2302-6111TB	3M	Active	2.54	2	1	Male Pin	Gold	Tin-Lead	3	-55 to 105	Non-compliant
350-10-102-00-013101	Preci-Dip	Active	2.54	2	1	Male Pin	Gold	Gold	3	-55 to 125	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: Amphenol ICC 77311-118-02LF

The 77311-118-02LF is the direct active equivalent from the original manufacturer. It maintains identical electrical and mechanical specifications to the obsolete 77311-118-02 with the following differences: post contact finish changed from Tin-Lead to Tin, and RoHS compliance status upgraded to compliant. This part is recommended for new designs and production transitions requiring the highest compatibility assurance.

Secondary Recommendations: Molex KK254 Series (0050291692, 0050291883, 0423752486, 0423752521)

Molex KK254 series headers meet all critical substitution parameters with active product status and ROHS3 compliance. These parts feature gold mating contact finish (except 0423751922 which uses tin) and are suitable for applications where manufacturer diversity is acceptable. Contact length and post dimensions show minor variations within acceptable tolerances for 2.54mm pitch board-to-board connections.

Tertiary Recommendations: 3M 2300 Series (2302-6111-TP, 2302-6111TB)

The 3M 2300 series maintains identical contact dimensions and current rating (3A) with active product status. These parts feature tin-lead or gold mating finishes and tin-lead post finishes. Operating temperature range is -55°C to 105°C, which is narrower than the original specification. RoHS non-compliance status matches the original part. These are suitable for legacy applications where temperature range requirements do not exceed 105°C.

Alternative: Preci-Dip 350-10-102-00-013101

The Preci-Dip 350 series header provides ROHS3 compliance and extended operating temperature range (-55°C to 125°C). Contact shape differs (circular vs. square), and contact material is brass rather than phosphor bronze. This part is suitable for applications prioritizing RoHS compliance and temperature performance over exact contact geometry matching.

Frequently Asked Questions (FAQ)

Q: Can I use the Molex KK254 series as a direct replacement for the Amphenol 77311-118-02?

A: Yes. The Molex KK254 series (0050291692, 0050291883, 0423752486, 0423752521) meets all critical substitution parameters: 2.54mm pitch, 2 positions, 1 row, male pin contacts, through-hole mounting, solder termination, and push-pull fastening. All are active products with ROHS3 compliance. Minor variations in contact length and post dimensions are within acceptable tolerances for this connector class.

Q: What is the difference between the 77311-118-02 and 77311-118-02LF?

A: The 77311-118-02LF is the active equivalent with two key differences: (1) post contact finish is Tin instead of Tin-Lead, and (2) RoHS compliance status is upgraded to compliant. All other electrical and mechanical specifications remain identical. The "LF" designation indicates lead-free compliance.

Q: Does the 3M 2300 series work as a substitute?

A: The 3M 2300 series (2302-6111-TP and 2302-6111TB) meets all critical connector parameters and maintains the same 3A current rating. However, the operating temperature range is -55°C to 105°C, which is narrower than the original -65°C to 125°C specification. Use this substitute only if your application does not require operation below -55°C or above 105°C.

Q: What is the significance of contact finish differences (Gold vs. Tin)?

A: Contact finish affects mating durability and corrosion resistance. Gold finishes provide superior corrosion resistance and are preferred for applications with frequent mating cycles or harsh environments. Tin finishes are acceptable for applications with limited mating cycles and controlled environments. Both finishes are electrically compatible at 2.54mm pitch with 3A current ratings.

Q: Can I mix parts from different manufacturers in the same assembly?

A: Yes. All substitute parts listed meet identical pitch (2.54mm), position count (2), and connector type (header, male pin) specifications. Mechanical and electrical compatibility is assured across manufacturers. However, for production consistency and supply chain management, it is recommended to standardize on a single manufacturer per assembly revision.

Q: Why does the Preci-Dip 350 series have circular contacts instead of square?

A: Contact shape is a design variation within the 2.54mm pitch connector class. Circular contacts in the Preci-Dip 350 series provide equivalent electrical performance and mating force characteristics. This variation does not affect compatibility with standard 2.54mm pitch receptacles.

Q: Is RoHS compliance mandatory for my application?

A: RoHS compliance is determined by your end-market requirements and regional regulations. The Amphenol 77311-118-02LF, Molex KK254 series, and Preci-Dip 350 series all offer RoHS-compliant options. If RoHS compliance is not required, the 3M 2300 series and original 77311-118-02 remain viable options.

Q: What packaging options are available?

A: The 77311-118-02LF is available in bulk packaging. Molex KK254 series parts are supplied in bulk. The 3M 2300 series packaging is not specified in the data. Preci-Dip 350 series is available in bulk packaging. Confirm packaging requirements with your supplier for production quantities.

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