TE Connectivity 521225-1 Quick Connect Female Crimp Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 521225-1 is a 0.187" (4.75mm) Quick Connect Female 16-20 AWG Crimp Connector with full insulation, designed for free-hanging in-line applications. This connector is part of the Ultrapod series and features brass contacts with a fully insulated design suitable for wire gauges between 16-20 AWG.

The 521225-1 carries an obsolete product status. Identification of equivalent and substitute parts is necessary to ensure continued availability and supply chain continuity for applications requiring this connector specification.

Substiute Parts

521225-1

TE Connectivity AMP ConnectorsIn Stock: 1280521225-1 Datasheet

Current PartRFQ

521225-2

TE Connectivity AMP ConnectorsIn Stock: 21152521225-2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 521225-1 is based on electrical and mechanical compatibility within the Ultrapod series. The substitute part must maintain identical specifications across the following critical parameters:

• Tab width and thickness (0.187" × 0.020")
• Wire gauge range (16-20 AWG)
• Gender classification (Female)
• Insulation configuration (Fully Insulated)
• Termination method (Crimp)
• Insulation diameter tolerance (0.090" ~ 0.130")
• Contact material (Brass)
• Overall length (1.085")
• Mounting configuration (Free Hanging In-Line)

The 521225-2 meets all these criteria and serves as the direct substitute for the obsolete 521225-1.

Parameter Comparison

Engineering Selection Recommendations

The 521225-2 is the direct substitute for the obsolete 521225-1. Both connectors are manufactured by TE Connectivity AMP Connectors within the Ultrapod series and maintain identical mechanical and electrical specifications across all critical parameters.

The 521225-2 carries an active product status, ensuring ongoing availability and supply chain support. Both parts maintain RoHS compliance and MSL rating of 1 (Unlimited), confirming equivalent environmental and moisture handling characteristics.

The 521225-2 features a tin contact finish, whereas the 521225-1 contact finish specification is not provided. This finish enhancement on the substitute part provides improved corrosion resistance and solderability without altering the connector's functional compatibility.

The 521225-2 is supplied in Cut Tape (CT) packaging, which is standard for production environments and component distribution.

Frequently Asked Questions (FAQ)

Q: Can the 521225-2 be used as a direct replacement for the 521225-1?

A: Yes. The 521225-2 is electrically and mechanically identical to the 521225-1 across all specified parameters, including tab dimensions, wire gauge range, insulation configuration, and overall length. The substitute part is fully compatible for applications currently using the obsolete 521225-1.

Q: What is the difference between the 521225-1 and 521225-2?

A: The primary differences are product status and contact finish. The 521225-1 is obsolete, while the 521225-2 is active. The 521225-2 includes a tin contact finish, which is not specified for the 521225-1. Both parts are otherwise identical in form, fit, and function.

Q: Are both parts RoHS compliant?

A: Yes. Both the 521225-1 and 521225-2 are RoHS compliant and carry an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions.

Q: What wire gauges are compatible with these connectors?

A: Both connectors accommodate wire gauges from 16-20 AWG with an insulation diameter tolerance of 0.090" to 0.130" (2.29mm to 3.30mm).

Q: What is the packaging format for the 521225-2?

A: The 521225-2 is supplied in Cut Tape (CT) packaging, suitable for automated assembly and component distribution.

Q: Are these connectors suitable for in-line applications?

A: Yes. Both connectors are designed for free-hanging in-line mounting configurations with an overall length of 1.085" (27.56mm).