GAX-4-88K Equivalent & Substitute Parts

Part Overview

The GAX-4-88K is a 4-port modular jack connector featuring 8p8c (RJ45, Ethernet) contacts in a 90° right-angle orientation. This through-hole solder-terminated connector is manufactured by Kycon, Inc. and is currently classified as obsolete. The connector utilizes phosphor bronze contacts with gold flash finish and is housed in polybutylene terephthalate (PBT) material with board lock features.

Due to the obsolete product status of the GAX-4-88K, identifying equivalent substitute parts from the active product line is essential for ongoing design support, maintenance, and procurement continuity.

Substiute Parts

GAX-4-88K

Kycon, Inc.In Stock: 715GAX-4-88K Datasheet

Current PartRFQ

GAX-4-88

Kycon, Inc.In Stock: 988GAX-4-88 Datasheet

SimilarRFQ

GAX-4-88-50

Kycon, Inc.In Stock: 1210GAX-4-88-50 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the GAX-4-88K are identified based on strict electrical and mechanical parameter matching within the Kycon GAX series. The substitution criteria are:

• Connector type: Jack
• Contact configuration: 8p8c (RJ45, Ethernet)
• Port count: 4
• Mounting type: Through hole
• Orientation: 90° angle (right)
• Termination method: Solder
• Shielding: Unshielded
• Housing material: Polybutylene terephthalate (PBT)
• Contact material: Phosphor bronze
• Contact finish: Gold
• Features: Board lock
• RoHS compliance: RoHS compliant
• MSL rating: 1 (Unlimited)

Parts meeting all these criteria are classified as direct substitutes. Variations in contact finish thickness and packaging format do not affect functional equivalence for connector applications.

Parameter Comparison

Engineering Selection Recommendations

Both GAX-4-88 and GAX-4-88-50 are direct functional equivalents to the obsolete GAX-4-88K. Selection between these active alternatives is based on the following criteria:

GAX-4-88: This part maintains identical specifications to the GAX-4-88K, including flash gold contact finish thickness. It is recommended for applications requiring exact parameter matching to the original design. This part is currently active with 895 units in stock.

GAX-4-88-50: This part differs only in contact finish thickness, specified at 50.0µin (1.27µm) compared to flash finish. The increased gold plating thickness provides enhanced durability in high-cycle insertion applications. This part is currently active with 1144 units in stock, offering superior availability.

Both substitute parts maintain full RoHS compliance and MSL rating 1 (unlimited) classification. Selection should be based on application requirements for contact durability and procurement availability.

Frequently Asked Questions (FAQ)

Q: Can GAX-4-88 and GAX-4-88-50 be used interchangeably with GAX-4-88K?

A: Yes. Both parts are functionally equivalent to the GAX-4-88K. They share identical connector type, contact configuration, port count, mounting type, orientation, termination method, shielding, housing material, contact material, and board lock features. The only difference is contact finish thickness, which does not affect functional compatibility.

Q: What is the difference between flash gold finish and 50µin gold finish?

A: Flash gold finish is a thin electroplated gold layer applied to phosphor bronze contacts. The 50.0µin (1.27µm) finish on the GAX-4-88-50 represents a thicker gold plating. Thicker gold plating provides increased resistance to wear and corrosion in applications with frequent mating cycles.

Q: Are there any compliance or certification differences between these parts?

A: No. All three parts—GAX-4-88K, GAX-4-88, and GAX-4-88-50—are RoHS compliant and carry MSL rating 1 (unlimited). They share identical ECCN (EAR99) and HTSUS (8536.69.4040) classifications.

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

A: Both GAX-4-88 and GAX-4-88-50 are supplied in tray packaging. The original GAX-4-88K packaging format is not specified in the available data.

Q: Which substitute part should be selected for new designs?

A: For new designs, either GAX-4-88 or GAX-4-88-50 is acceptable. Selection depends on application requirements. If the design does not require enhanced contact durability from thicker gold plating, GAX-4-88 is suitable. If the application involves frequent connector mating cycles or extended service life requirements, GAX-4-88-50 with 50µin gold finish is recommended.

Q: Are both substitute parts currently in production?

A: Yes. Both GAX-4-88 and GAX-4-88-50 are classified as active products with current inventory availability (895 and 1144 units respectively).