TE Connectivity 521212-1 Quick Connect Female Crimp Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 521212-1 is a 0.187" (4.75mm) Quick Connect Female 14-18 AWG Crimp Connector with full insulation, designed for free-hanging in-line applications. This connector is part of the Ultrapod series and features brass contacts with tin finish. The 521212-1 is classified as obsolete product status, necessitating identification of active equivalent alternatives to ensure continued availability and supply chain continuity for new designs and production requirements.

Substiute Parts

521212-1

TE Connectivity AMP ConnectorsIn Stock: 772521212-1 Datasheet

Current PartRFQ

521212-2

TE Connectivity AMP ConnectorsIn Stock: 35229521212-2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 521212-1 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical specifications for tab width (0.187"), tab thickness (0.020"), wire gauge range (14-18 AWG), gender (Female), termination method (Crimp), insulation classification (Fully Insulated), mounting configuration (Free Hanging In-Line), contact material (Brass), contact finish (Tin), and insulation diameter range (0.110" ~ 0.180"). Additionally, the substitute must comply with the same regulatory standards: ROHS3 compliance and MSL 1 rating. The primary distinction between the main part and its substitute relates to product status (obsolete versus active) and packaging configuration, which do not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The TE Connectivity 521212-2 is the direct substitute for the obsolete 521212-1. Both parts are manufactured by TE Connectivity AMP Connectors within the Ultrapod series and maintain complete electrical and mechanical equivalence across all specified parameters. The 521212-2 carries active product status, ensuring ongoing availability and supply chain support. Both parts satisfy ROHS3 compliance requirements and carry MSL 1 rating, indicating no moisture sensitivity constraints during storage and handling. The 521212-2 is supplied in Cut Tape (CT) packaging, which is standard for production environments. Selection of the 521212-2 eliminates obsolescence risk while maintaining full compatibility with existing designs utilizing the 521212-1.

Frequently Asked Questions (FAQ)

Q: Are the 521212-1 and 521212-2 electrically interchangeable?

A: Yes. Both connectors maintain identical electrical specifications including wire gauge range (14-18 AWG), contact material (Brass), contact finish (Tin), and insulation classification (Fully Insulated). They are electrically equivalent.

Q: Are the 521212-1 and 521212-2 mechanically interchangeable?

A: Yes. Both connectors share identical mechanical dimensions: 0.187" tab width, 0.020" tab thickness, 1.117" overall length, and 0.110" ~ 0.180" insulation diameter range. They are mechanically equivalent.

Q: What is the primary difference between these two parts?

A: The 521212-1 is classified as obsolete, while the 521212-2 is active product. The 521212-2 is supplied in Cut Tape (CT) packaging. These differences do not affect functional compatibility.

Q: Can I use 521212-2 in place of 521212-1 in existing designs?

A: Yes. The 521212-2 is a direct substitute with identical electrical and mechanical specifications. No design modifications are required.

Q: Are both parts RoHS compliant?

A: Yes. Both the 521212-1 and 521212-2 are ROHS3 compliant and carry MSL 1 rating.

Q: What packaging options are available for the substitute part?

A: The 521212-2 is supplied in Cut Tape (CT) packaging, which is standard for production and assembly operations.

Q: Why should I transition from 521212-1 to 521212-2?

A: The 521212-1 is obsolete product. Transitioning to the 521212-2 ensures continued supply availability, production support, and eliminates obsolescence risk for future procurement.