TE Connectivity 8-520337-1 Quick Connect Female Crimp Connector Equivalent & Substitute Parts

Part Overview

The TE Connectivity 8-520337-1 is a 0.187" (4.75mm) Quick Connect Female Crimp Connector rated for 18-22 AWG wire gauges with full insulation. This connector is part of the Ultra-Fast series and features an angled 90° flag terminal design suitable for free-hanging, in-line, and right-angle mounting applications. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure component availability for ongoing production and service requirements.

Key Parameters

Parameter	Specification
Tab Width	0.187" (4.75mm)
Tab Thickness	0.032" (0.81mm)
Wire Gauge	18-22 AWG
Gender	Female
Terminal Type	Angled - 90°, Flag
Insulation Type	Fully Insulated
Termination Method	Crimp
Mounting Type	Free Hanging (In-Line), Right Angle
Contact Material	Brass
Contact Finish	Tin
Insulation Diameter	0.165" (4.19mm)
Color	Red
Series	Ultra-Fast

Substitute Part Grouping Explanation

Substitution of the obsolete 8-520337-1 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 (0.032"), wire gauge range (18-22 AWG), gender (female), terminal type (angled 90° flag), insulation classification (fully insulated), termination method (crimp), mounting configuration (free hanging/right angle), contact material (brass), contact finish (tin), and insulation diameter (0.165"). The substitute part 2-520337-2 satisfies all these requirements while maintaining active product status and full compliance with applicable regulatory standards.

Parameter Comparison

Parameter	8-520337-1 (Main Part)	2-520337-2 (Substitute)	Match Status
Manufacturer	TE Connectivity AMP Connectors	TE Connectivity AMP Connectors	Identical
Category	Terminals	Terminals	Identical
Description	CONN QC RCPT 18-22AWG 0.187	CONN QC RCPT 18-22AWG 0.187	Identical
Series	Ultra-Fast	Ultra-Fast	Identical
Tab Width	0.187" (4.75mm)	0.187" (4.75mm)	Identical
Tab Thickness	0.032" (0.81mm)	0.032" (0.81mm)	Identical
Wire Gauge	18-22 AWG	18-22 AWG	Identical
Gender	Female	Female	Identical
Terminal Type	Angled - 90°, Flag	Angled - 90°, Flag	Identical
Insulation	Fully Insulated	Fully Insulated	Identical
Termination	Crimp	Crimp	Identical
Mounting Type	Free Hanging (In-Line), Right Angle	Free Hanging (In-Line), Right Angle	Identical
Contact Material	Brass	Brass	Identical
Contact Finish	Tin	Tin	Identical
Insulation Diameter	0.165" (4.19mm)	0.165" (4.19mm)	Identical
Color	Red	Red	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
MSL Rating	1 (Unlimited)	1 (Unlimited)	Identical
ECCN	EAR99	EAR99	Identical
HTSUS Code	8536.90.4000	8536.90.4000	Identical
Product Status	Obsolete	Active	Substitute is Active
Packaging	Not Specified	Bulk	Substitute offers Bulk packaging

Engineering Selection Recommendations

The TE Connectivity 2-520337-2 is the direct functional equivalent for the obsolete 8-520337-1. Both parts share identical electrical and mechanical specifications across all critical parameters including tab dimensions, wire gauge compatibility, terminal geometry, and contact materials. The 2-520337-2 maintains active product status with TE Connectivity, ensuring continued availability and manufacturing support. Both parts are ROHS3 compliant and carry identical regulatory classifications (EAR99, HTSUS 8536.90.4000), confirming full compliance equivalence. The 2-520337-2 is supplied in bulk packaging and maintains significantly higher inventory levels (47,315 pieces versus 693 pieces), providing superior supply chain reliability. For applications currently utilizing the 8-520337-1, direct substitution with the 2-520337-2 is supported without design modification or performance compromise.

Frequently Asked Questions (FAQ)

Q: Can the 2-520337-2 be used as a direct replacement for the 8-520337-1 in existing designs?

A: Yes. The 2-520337-2 is electrically and mechanically identical to the 8-520337-1 across all specified parameters. Direct substitution is supported without design changes.

Q: What are the key differences between these two part numbers?

A: The primary differences are product status and packaging. The 8-520337-1 is obsolete with limited inventory (693 pieces), while the 2-520337-2 is active with bulk packaging and substantially higher inventory availability (47,315 pieces).

Q: Are both parts compliant with the same regulatory standards?

A: Yes. Both the 8-520337-1 and 2-520337-2 are ROHS3 compliant with identical ECCN (EAR99) and HTSUS (8536.90.4000) classifications. MSL ratings are identical at Level 1 (Unlimited).

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

A: Both connectors support 18-22 AWG wire gauges with full insulation and crimp termination.

Q: What is the tab width specification for these quick connect receptacles?

A: The tab width is 0.187" (4.75mm) with a thickness of 0.032" (0.81mm), designed for standard quick connect male blade terminals.

Q: Are these connectors suitable for right-angle mounting applications?

A: Yes. Both connectors feature angled 90° flag terminal design and support free-hanging, in-line, and right-angle mounting configurations.

Q: What contact material and finish are used in these connectors?

A: Both connectors use brass contact material with tin plating for corrosion resistance and reliable electrical performance.

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