TE Connectivity 521293-1 Quick Connect Female Crimp Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 521293-1 is a 0.187" (4.75mm) Quick Connect Female 16-18 AWG Crimp Connector with full insulation, designed for free-hanging in-line applications. This connector is part of the Ultrapod series and features brass contact material with fully insulated construction suitable for wire gauges between 16-18 AWG.

The 521293-1 carries an Obsolete product status. Identification of equivalent and substitute parts is necessary to ensure continued availability and supply chain continuity for applications currently utilizing this connector.

Key Parameters

Parameter	Value
Tab Width	0.187" (4.75mm)
Tab Thickness	0.020" (0.51mm)
Wire Gauge	16-18 AWG
Gender	Female
Termination Type	Crimp
Insulation Type	Fully Insulated
Mounting Type	Free Hanging (In-Line)
Overall Length	1.085" (27.56mm)
Insulation Diameter Range	0.105" ~ 0.210" (2.67mm ~ 5.33mm)
Contact Material	Brass
Series	Ultrapod

Substitute Part Grouping Explanation

Substitution of the 521293-1 is determined by strict equivalence across the following critical parameters:

Tab Width and Thickness: 0.187" (4.75mm) width and 0.020" (0.51mm) thickness ensure mechanical compatibility with mating connectors
Wire Gauge Compatibility: 16-18 AWG range defines the applicable conductor sizes
Gender and Termination: Female gender and crimp termination type are functional requirements
Insulation Specification: Fully insulated construction with insulation diameter range of 0.105" ~ 0.210" (2.67mm ~ 5.33mm)
Mounting Configuration: Free hanging in-line mounting type
Contact Material: Brass construction for electrical conductivity

The substitute part 521293-2 maintains equivalence across all critical parameters while offering improved product status and compliance certifications.

Parameter Comparison

Parameter	521293-1 (Main Part)	521293-2 (Substitute)
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Category	Terminals	Terminals
Description	CONN QC RCPT 16-18AWG 0.187	CONN QC RCPT 16-18AWG 0.187
Series	Ultrapod	Ultrapod
Product Status	Obsolete	Active
Terminal Type	Standard	Standard
Gender	Female	Female
Tab Width	0.187" (4.75mm)	0.187" (4.75mm)
Tab Thickness	0.020" (0.51mm)	0.020" (0.51mm)
Overall Length	1.085" (27.56mm)	1.085" (27.56mm)
Termination	Crimp	Crimp
Wire Gauge	16-18 AWG	16-18 AWG
Insulation	Fully Insulated	Fully Insulated
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)
Color	Natural	Natural
Contact Material	Brass	Brass
Insulation Diameter	0.105" ~ 0.210" (2.67mm ~ 5.33mm)	0.105" ~ 0.210" (2.67mm ~ 5.33mm)
MSL Rating	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS Code	8536.90.4000	8536.90.4000
RoHS Status	RoHS Compliant	ROHS3 Compliant
Packaging	Not specified	Cut Tape (CT)
Contact Finish	Not specified	Tin

Engineering Selection Recommendations

The 521293-2 is the direct substitute for the obsolete 521293-1. Both parts maintain identical mechanical and electrical specifications across all critical parameters including tab dimensions, wire gauge range, insulation type, and mounting configuration.

The 521293-2 offers the following advantages:

Active Product Status: The 521293-2 maintains active production status, ensuring long-term availability and supply chain reliability
Enhanced Compliance: ROHS3 compliance provides alignment with current regulatory requirements, compared to the RoHS Compliant status of the 521293-1
Standardized Packaging: Cut Tape (CT) packaging enables efficient component handling and automated assembly processes
Contact Finish Specification: Tin contact finish is explicitly defined on the 521293-2, providing corrosion resistance and improved solderability characteristics

No functional or mechanical differences exist between these parts. The 521293-2 is suitable for direct replacement in all applications currently utilizing the 521293-1.

Frequently Asked Questions (FAQ)

Q: Are the 521293-1 and 521293-2 mechanically interchangeable?

A: Yes. Both connectors share identical tab width (0.187"), tab thickness (0.020"), overall length (1.085"), and insulation diameter range (0.105" ~ 0.210"). They are mechanically interchangeable in all applications.

Q: What is the wire gauge compatibility for these connectors?

A: Both the 521293-1 and 521293-2 are rated for 16-18 AWG wire gauges. The insulation diameter range of 0.105" ~ 0.210" (2.67mm ~ 5.33mm) accommodates conductors within this gauge specification.

Q: Why is the 521293-1 listed as Obsolete?

A: The 521293-1 has reached end-of-life status. The 521293-2 is the active production equivalent and should be used for new designs and ongoing supply requirements.

Q: What is the difference in packaging between these parts?

A: The 521293-1 packaging is not specified in available documentation. The 521293-2 is supplied in Cut Tape (CT) packaging, which is standard for automated assembly and component distribution.

Q: Are there compliance differences between the two parts?

A: The 521293-1 is RoHS Compliant. The 521293-2 is ROHS3 Compliant, representing alignment with current regulatory standards. Both parts carry EAR99 ECCN classification and identical HTSUS codes (8536.90.4000).

Q: What is the contact finish specification?

A: The 521293-1 contact finish is not specified. The 521293-2 features a tin contact finish, which provides corrosion resistance and improved electrical performance characteristics.

Q: Can the 521293-2 be used as a direct replacement in existing assemblies?

A: Yes. The 521293-2 maintains full electrical and mechanical equivalence with the 521293-1 across all specified parameters and is suitable for direct replacement without design modification.

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