Switchcraft 3503 RCA Phono Jack Mono Connector - Equivalent & Substitute Parts

Part Overview

The Switchcraft 3503 is a 3.20mm ID, 9.00mm OD (RCA) Phono Jack Mono Connector with solder cup termination, designed for mono audio signal applications. This connector features shielded construction with nickel-plated copper alloy contacts and includes mounting hardware. The 3503 is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and component procurement.

Substiute Parts

3503

Switchcraft Inc.In Stock: 8423503 Datasheet

Current PartRFQ

3503X

Switchcraft Inc.In Stock: 16533503X Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Switchcraft 3503 is determined by strict equivalence across the following critical parameters:

• Connector Type: Phono (RCA) Jack (female gender)
• Mating Diameter: 3.20mm ID, 9.00mm OD (RCA standard)
• Signal Configuration: Mono (2 conductors, 2 contacts)
• Mounting Type: Free Hanging (In-Line)
• Termination Method: Solder Cup
• Shielding: Shielded construction

The substitute part 3503X maintains all these core electrical and mechanical parameters, ensuring direct functional compatibility. Variations in body material, insulation color, cable opening dimensions, and product status do not affect the substitution relationship when the above parameters remain constant.

Parameter Comparison

Engineering Selection Recommendations

The Switchcraft 3503X is the direct equivalent substitute for the obsolete 3503. Both parts share identical electrical and mechanical specifications for RCA phono jack mono connector applications.

The 3503X offers the following advantages:

• Active product status ensures ongoing availability and supply chain continuity
• ROHS3 compliance meets current environmental and regulatory requirements, whereas the 3503 is RoHS non-compliant
• Higher inventory availability (1598 pcs vs. 792 pcs) supports procurement reliability

For new designs or component replacement in systems requiring RoHS compliance, the 3503X is the appropriate selection. For legacy systems where RoHS non-compliance is not a constraint, both parts are functionally interchangeable.

Frequently Asked Questions (FAQ)

Q: Can the 3503X directly replace the 3503 in existing assemblies?

A: Yes. Both connectors maintain identical mating diameter (3.20mm ID, 9.00mm OD), signal configuration (mono, 2 contacts), mounting type (free hanging in-line), and termination method (solder cup). Electrical and mechanical compatibility is assured.

Q: What is the primary difference between the 3503 and 3503X?

A: The 3503X is the active production equivalent of the obsolete 3503. The 3503X achieves ROHS3 compliance through material composition changes (brass body and contacts vs. copper alloy), while maintaining all functional connector specifications. Packaging differs (bulk vs. standard), and inventory levels differ.

Q: Are there any dimensional differences between these connectors?

A: The cable opening dimension differs slightly: 3503 specifies 0.205" (5.20mm), while 3503X specifies 0.200" (5.08mm). This minor variation does not affect connector mating or standard cable compatibility for typical RCA applications.

Q: Which part should be selected for new designs?

A: The 3503X should be selected for new designs. It is an active product with current regulatory compliance (ROHS3), ensuring long-term availability and support.

Q: Are both parts suitable for audio signal applications?

A: Yes. Both the 3503 and 3503X are designed for mono audio signal applications with shielded construction, nickel-plated contacts, and identical RCA phono jack specifications.