TE Connectivity 521632-1 Quick Connect Female Crimp Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 521632-1 is a 0.250" (6.35mm) Quick Connect Female 14-20 AWG Crimp Connector with full insulation, part of the Ultrapod series. This connector is designed for free-hanging in-line applications requiring reliable quick-connect termination on wire gauges from 14 to 20 AWG.

The 521632-1 carries an Obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity and ensure procurement availability for applications currently utilizing this connector.

Key Parameters

Parameter	Value
Tab Width	0.250" (6.35mm)
Tab Thickness	0.032" (0.81mm)
Wire Gauge	14-20 AWG
Insulation Type	Fully Insulated
Insulation Diameter	0.110" ~ 0.180" (2.79mm ~ 4.57mm)
Termination Method	Crimp
Gender	Female
Mounting Type	Free Hanging (In-Line)
Contact Material	Brass
Overall Length	1.370" (34.80mm)
RoHS Compliance	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 521632-1 is determined by strict equivalence across the following critical parameters:

Tab Width and Thickness: 0.250" (6.35mm) width and 0.032" (0.81mm) thickness ensure mechanical compatibility with mating connectors
Wire Gauge Range: 14-20 AWG specification defines the applicable conductor sizes
Insulation Specification: Fully insulated construction with insulation diameter range of 0.110" ~ 0.180" (2.79mm ~ 4.57mm)
Termination Method: Crimp termination process
Gender and Mounting: Female gender and free-hanging in-line mounting configuration
Contact Material: Brass construction
Regulatory Compliance: RoHS Compliant status and MSL 1 rating

The substitute part 521632-2 maintains identical electrical and mechanical specifications across all these parameters, with the distinction of Active product status and tin contact finish.

Parameter Comparison

Parameter	521632-1 (Main Part)	521632-2 (Substitute)
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors
Series	Ultrapod	Ultrapod
Tab Width	0.250" (6.35mm)	0.250" (6.35mm)
Tab Thickness	0.032" (0.81mm)	0.032" (0.81mm)
Wire Gauge	14-20 AWG	14-20 AWG
Insulation Type	Fully Insulated	Fully Insulated
Insulation Diameter	0.110" ~ 0.180" (2.79mm ~ 4.57mm)	0.110" ~ 0.180" (2.79mm ~ 4.57mm)
Termination	Crimp	Crimp
Gender	Female	Female
Mounting Type	Free Hanging (In-Line)	Free Hanging (In-Line)
Overall Length	1.370" (34.80mm)	1.370" (34.80mm)
Contact Material	Brass	Brass
Color	Natural	Natural
RoHS Status	RoHS Compliant	RoHS Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS Code	8536.90.4000	8536.90.4000
Product Status	Obsolete	Active
Contact Finish	Not specified	Tin
Packaging	Not specified	Cut Tape (CT)

Engineering Selection Recommendations

The 521632-2 serves as the direct substitute for the obsolete 521632-1. Both parts share identical mechanical and electrical specifications across all critical parameters including tab dimensions, wire gauge compatibility, insulation properties, and termination method.

The primary distinction between these parts is product status: 521632-1 is Obsolete while 521632-2 is Active. The 521632-2 is available in significantly higher inventory (8501 pieces versus 998 pieces) and is packaged in Cut Tape format, facilitating procurement for new designs and ongoing production requirements.

Both parts maintain RoHS Compliance and MSL 1 rating, ensuring compatibility with current regulatory requirements and environmental conditions. The tin contact finish specified for 521632-2 provides enhanced corrosion resistance compared to the unspecified finish of 521632-1.

Frequently Asked Questions (FAQ)

Q: Can 521632-2 be used as a direct replacement for 521632-1 in existing applications?

A: Yes. The 521632-2 maintains identical electrical and mechanical specifications across all critical parameters including tab width, thickness, wire gauge range, insulation diameter, and termination method. The parts are mechanically and electrically interchangeable.

Q: What is the significance of the tin contact finish on 521632-2?

A: The tin contact finish on 521632-2 provides enhanced corrosion resistance and improved contact reliability compared to the unspecified finish on 521632-1. This represents an improvement in the substitute part.

Q: Why is 521632-1 listed as Obsolete?

A: Product obsolescence is determined by the manufacturer. The 521632-2 is the active equivalent and should be used for all new designs and ongoing procurement.

Q: Are there packaging differences between these parts?

A: Yes. The 521632-2 is supplied in Cut Tape (CT) packaging, while packaging information for 521632-1 is not specified. Cut Tape packaging is standard for component distribution and facilitates automated assembly processes.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both 521632-1 and 521632-2 are RoHS Compliant, carry MSL 1 rating, and share the same ECCN (EAR99) and HTSUS (8536.90.4000) classifications.

Q: What wire gauges are compatible with these connectors?

A: Both connectors accommodate wire gauges from 14 to 20 AWG with insulation diameters ranging from 0.110" to 0.180" (2.79mm to 4.57mm).

Q: Is the 0.250" tab width a critical specification for compatibility?

A: Yes. The 0.250" (6.35mm) tab width and 0.032" (0.81mm) thickness are critical mechanical specifications that determine compatibility with mating quick-connect receptacles and must be maintained for proper electrical and mechanical connection.

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