JST 03HR-6S Equivalent & Substitute Parts

Part Overview

The JST 03HR-6S is a 3-position rectangular receptacle connector with IDC (Insulation Displacement Contact) termination, designed for discrete wire applications at 26 AWG. This connector features a tin contact finish, detent lock fastening, and closed-end design for reliable in-line connections.

The 03HR-6S is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for production, repair, and field replacement applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	03HR-6S
Manufacturer	JST Sales America Inc.
Category	Rectangular Connectors
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	3
Pitch	0.098" (2.50mm)
Number of Rows	1
Mounting Type	Free Hanging (In-Line)
Cable Termination	IDC
Wire Gauge	26 AWG
Contact Finish	Tin
Features	Closed End
Color	Natural
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution eligibility for the JST 03HR-6S is determined by the following critical parameters:

Connector Type & Contact Configuration: Receptacle with female socket contacts
Position Count: 3 positions
Pitch Spacing: 0.098" (2.50mm)
Row Configuration: Single row
Termination Method: IDC (Insulation Displacement Contact)
Contact Finish: Tin plating
Wire Gauge Compatibility: 26 AWG (primary) or 24-28 AWG range (acceptable)
Mounting Style: Free hanging in-line configuration

Parts meeting these criteria are classified as direct or similar substitutes. The 03HR-6S-P-N is a direct substitute from the same manufacturer with identical electrical and mechanical specifications but active product status. The TE Connectivity parts (177534-3 and 2-177534-3) are similar substitutes with compatible wire gauge ranges and matching connector geometry.

Parameter Comparison

Parameter	03HR-6S (Main)	03HR-6S-P-N (Direct)	177534-3 (Similar)	2-177534-3 (Similar)
Manufacturer	JST Sales America Inc.	JST Sales America Inc.	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket
Number of Positions	3	3	3	3
Pitch	0.098" (2.50mm)	0.098" (2.50mm)	0.098" (2.50mm)	0.098" (2.50mm)
Number of Rows	1	1	1	1
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Cable Termination	IDC	IDC	IDC	IDC
Wire Gauge	26 AWG	26 AWG	24-28 AWG	24-28 AWG
Contact Finish	Tin	Tin	Tin	Tin
Color	Natural	Natural	Black	Natural
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS non-compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant

Engineering Selection Recommendations

Direct Substitute (Recommended Primary Choice): The 03HR-6S-P-N is the preferred substitute. It is manufactured by JST Sales America Inc., maintains identical electrical and mechanical specifications to the 03HR-6S, and carries active product status. The 03HR-6S-P-N is RoHS compliant, addressing regulatory requirements that the original part does not meet. Inventory availability is confirmed at 924 pieces.

Similar Substitutes (Alternative Options): The TE Connectivity parts 177534-3 and 2-177534-3 are functionally compatible alternatives. Both support the required 3-position, 0.098" pitch configuration with IDC termination and tin contact finish. The wire gauge specification of 24-28 AWG encompasses the 26 AWG requirement of the original part. Both parts are RoHS compliant and actively produced. The 2-177534-3 maintains natural color matching, while 177534-3 is available in black. Inventory availability is confirmed at 787 and 972 pieces respectively.

Frequently Asked Questions (FAQ)

Q: Can the 03HR-6S-P-N be used as a direct replacement for the 03HR-6S? A: Yes. The 03HR-6S-P-N is a direct substitute with identical connector geometry, contact configuration, pitch spacing, and wire gauge specifications. The primary difference is product status (active vs. obsolete) and RoHS compliance.

Q: Are the TE Connectivity parts (177534-3 and 2-177534-3) compatible with the 03HR-6S? A: Yes. Both TE Connectivity parts meet the critical substitution parameters: 3-position receptacle, 0.098" pitch, IDC termination, tin finish, and free-hanging in-line mounting. The wire gauge range of 24-28 AWG is compatible with the 26 AWG specification of the original part.

Q: What is the difference between 177534-3 and 2-177534-3? A: Both parts are electrically and mechanically identical. The primary difference is connector color: 177534-3 is black, while 2-177534-3 is natural. Selection depends on application requirements and color-coding conventions.

Q: Does the color difference between substitute parts affect compatibility? A: No. Color is a cosmetic attribute and does not affect electrical or mechanical compatibility. Selection should be based on application requirements and design specifications.

Q: Are all substitute parts RoHS compliant? A: The 03HR-6S-P-N, 177534-3, and 2-177534-3 are all RoHS compliant. The original 03HR-6S is RoHS non-compliant. If RoHS compliance is required, any of the three substitute parts are acceptable.

Q: What is the significance of the wire gauge range 24-28 AWG for the TE Connectivity parts? A: The 24-28 AWG range indicates the connector accommodates wire gauges from 24 AWG to 28 AWG. Since the original 03HR-6S operates at 26 AWG, it falls within this compatible range and can be substituted without modification.

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