04HR-4K Rectangular Connector Equivalent & Substitute Parts

Part Overview

The 04HR-4K is a 4-position rectangular receptacle connector manufactured by JST Sales America Inc., designed for IDC (Insulation Displacement Connector) termination with 24 AWG discrete wiring. This connector features tin-lead contact finish and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active product lines are necessary for ongoing system maintenance and new design implementations.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	4
Pitch	0.098" (2.50mm)
Cable Termination	IDC
Wire Gauge	24 AWG
Contact Finish	Tin-Lead
Mounting Type	Free Hanging (In-Line)
Number of Rows	1
Contact Type	Female Socket

Substitute Part Grouping Explanation

Substitution eligibility for the 04HR-4K is determined by the following critical parameters:

Connector Type & Position Count: Must be receptacle configuration with 4 positions
Pitch Specification: Must maintain 0.098" (2.50mm) pitch for mechanical compatibility
Cable Termination Method: Must support IDC termination
Wire Gauge Compatibility: Must accommodate 24 AWG or broader wire gauge range including 24 AWG
Contact Finish: Tin or tin-lead finishes are functionally equivalent for electrical performance
Mounting Configuration: Must be free hanging (in-line) with single row layout
Contact Type: Must be female socket configuration

Based on these parameters, the following parts qualify as substitutes:

04HR-4K-P-N (JST Sales America Inc.) – Direct manufacturer equivalent with active product status
177534-4 (TE Connectivity AMP Connectors) – Cross-manufacturer substitute with compatible specifications
2-177534-4 (TE Connectivity AMP Connectors) – Cross-manufacturer substitute with compatible specifications

Parameter Comparison

Parameter	04HR-4K	04HR-4K-P-N	177534-4	2-177534-4
Manufacturer	JST Sales America Inc.	JST Sales America Inc.	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Product Status	Obsolete	Active	Active	Active
Number of Positions	4	4	4	4
Pitch	0.098" (2.50mm)	0.098" (2.50mm)	0.098" (2.50mm)	0.098" (2.50mm)
Wire Gauge	24 AWG	24 AWG	24-28 AWG	24-28 AWG
Cable Termination	IDC	IDC	IDC	IDC
Contact Finish	Tin-Lead	Tin	Tin	Tin
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)	Free Hanging (In-Line)
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Not applicable	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitute: 04HR-4K-P-N

The 04HR-4K-P-N is the recommended substitute for the obsolete 04HR-4K. Both connectors are manufactured by JST Sales America Inc. and share identical mechanical and electrical specifications. The 04HR-4K-P-N maintains active product status and achieves ROHS3 compliance, making it suitable for new designs and legacy system replacements. The transition from tin-lead to tin contact finish does not affect functional compatibility for this connector category.

Secondary Substitutes: 177534-4 and 2-177534-4

The TE Connectivity AMP Connectors parts 177534-4 and 2-177534-4 are functionally equivalent cross-manufacturer substitutes. Both maintain the required 4-position, 0.098" pitch configuration with IDC termination and female socket contacts. These parts support an expanded wire gauge range of 24-28 AWG, which encompasses the 24 AWG requirement of the 04HR-4K. The 2-177534-4 variant offers RoHS compliance for applications requiring regulatory adherence.

Compliance Considerations

For applications requiring RoHS compliance, select 04HR-4K-P-N or 2-177534-4. For legacy systems without compliance requirements, all three substitutes remain functionally compatible.

Frequently Asked Questions (FAQ)

Q: Can the 04HR-4K-P-N directly replace the 04HR-4K in existing assemblies?

A: Yes. The 04HR-4K-P-N is mechanically and electrically compatible with the 04HR-4K. Both connectors share identical pitch (0.098"), position count (4), mounting configuration (free hanging in-line), and IDC termination method. The contact finish change from tin-lead to tin does not affect connector performance.

Q: What is the difference between 177534-4 and 2-177534-4?

A: Both parts are TE Connectivity AMP Connectors with identical electrical and mechanical specifications. The primary differences are packaging configuration and color designation (177534-4 is black; 2-177534-4 is natural). The 2-177534-4 carries RoHS compliance certification, while 177534-4 has not applicable RoHS status.

Q: Are the TE Connectivity parts (177534-4 and 2-177534-4) compatible with JST connectors?

A: Yes. The TE Connectivity parts maintain the same 0.098" pitch, 4-position configuration, and IDC termination method as the JST 04HR-4K series. Cross-manufacturer compatibility is established through these shared mechanical and electrical parameters.

Q: Can I use a substitute part with 24-28 AWG rating in place of the 24 AWG specification?

A: Yes. The 24-28 AWG wire gauge range of 177534-4 and 2-177534-4 encompasses the 24 AWG requirement of the 04HR-4K. The broader range does not compromise compatibility for 24 AWG applications.

Q: Which substitute should I select for new designs?

A: For new designs, select based on compliance requirements. If RoHS compliance is required, use 04HR-4K-P-N (ROHS3 compliant) or 2-177534-4 (RoHS compliant). If cross-manufacturer sourcing is preferred, both TE Connectivity options are functionally equivalent.

Q: What is the inventory status of these substitutes?

A: 04HR-4K-P-N: 1675 pcs in stock; 177534-4: 759 pcs in stock; 2-177534-4: 700 pcs in stock.

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