TE Connectivity 521600-1 Quick Connect Female Crimp Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 521600-1 is a 0.187" (4.75mm) Quick Connect Female 18-22 AWG Crimp Connector with full insulation, designed for free-hanging in-line and right-angle mounting applications. This connector belongs to the Ultrapod series and features a brass contact with angled 90° flag terminal configuration.

The 521600-1 carries an Obsolete product status. Locating equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production and maintenance requirements for systems utilizing this connector specification.

Substiute Parts

521600-1

TE Connectivity AMP ConnectorsIn Stock: 751521600-1 Datasheet

Current PartRFQ

521600-2

TE Connectivity AMP ConnectorsIn Stock: 8313521600-2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 521600-1 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Tab Width: 0.187" (4.75mm)
• Tab Thickness: 0.032" (0.81mm)
• Wire Gauge: 18-22 AWG
• Gender: Female
• Terminal Type: Angled - 90°, Flag
• Termination Method: Crimp
• Insulation Type: Fully Insulated
• Insulation Diameter: 0.060" ~ 0.110" (1.52mm ~ 2.79mm)
• Mounting Type: Free Hanging (In-Line), Right Angle
• Contact Material: Brass
• Series: Ultrapod
• RoHS Compliance: RoHS Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part 521600-2 maintains full electrical and mechanical compatibility with the 521600-1 across all critical parameters. The primary distinction is product status: 521600-2 is Active, whereas 521600-1 is Obsolete. Additionally, 521600-2 includes a Tin contact finish specification and is available in Cut Tape packaging, providing enhanced supply availability and manufacturing continuity.

Parameter Comparison

Engineering Selection Recommendations

521600-2 as Primary Substitute:

The TE Connectivity 521600-2 is the direct equivalent substitute for the obsolete 521600-1. Both parts share identical electrical and mechanical specifications across all critical parameters including tab dimensions, wire gauge compatibility, terminal configuration, and insulation characteristics.

Selection of 521600-2 is supported by the following factors:

• Product Status: 521600-2 maintains Active status, ensuring long-term availability and continued manufacturing support from TE Connectivity.
• Compliance Alignment: Both parts maintain RoHS Compliance and identical ECCN and HTSUS classifications, supporting regulatory and trade requirements.
• Moisture Sensitivity: Both parts carry MSL 1 (Unlimited) rating, indicating equivalent environmental performance.
• Supply Continuity: 521600-2 is available in significantly higher inventory (8212 units) compared to 521600-1 (733 units), supporting production scheduling and supply chain reliability.
• Contact Finish: 521600-2 specifies Tin contact finish, providing enhanced corrosion resistance and contact reliability compared to unspecified finish on 521600-1.

Frequently Asked Questions (FAQ)

Q: Can 521600-2 be used as a direct replacement for 521600-1 in existing designs?

A: Yes. The 521600-2 maintains full electrical and mechanical compatibility with 521600-1 across all critical parameters: tab width, tab thickness, wire gauge, terminal type, insulation specifications, and mounting configuration. Both parts are members of the Ultrapod series and carry identical RoHS and MSL certifications.

Q: What is the primary difference between 521600-1 and 521600-2?

A: The primary differences are product status and contact finish. The 521600-1 is Obsolete, while 521600-2 is Active. Additionally, 521600-2 specifies a Tin contact finish, whereas 521600-1 does not specify a finish. Both parts are functionally equivalent for crimp termination of 18-22 AWG wires with 0.187" (4.75mm) quick connect female receptacles.

Q: Does the Tin contact finish on 521600-2 affect compatibility with 521600-1 applications?

A: No. The Tin contact finish on 521600-2 provides enhanced corrosion resistance and is compatible with all applications designed for 521600-1. The finish does not alter electrical or mechanical interface specifications.

Q: What packaging is available for 521600-2?

A: The 521600-2 is available in Cut Tape (CT) packaging. The 521600-1 packaging specification is not provided in the available documentation.

Q: Are both parts RoHS compliant?

A: Yes. Both 521600-1 and 521600-2 are RoHS Compliant and carry identical ECCN (EAR99) and HTSUS (8536.90.4000) classifications.

Q: What wire gauge range is supported by these connectors?

A: Both 521600-1 and 521600-2 support 18-22 AWG wire gauge with insulation diameter range of 0.060" to 0.110" (1.52mm to 2.79mm).

Q: Is the Moisture Sensitivity Level the same for both parts?

A: Yes. Both 521600-1 and 521600-2 carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage or handling.