A-USB-B-SMT-TOP-R Equivalent & Substitute Parts

Part Overview

The A-USB-B-SMT-TOP-R is a USB-B Type-B receptacle connector manufactured by Assmann WSW Components, designed for USB 1.1 applications in surface mount configurations. This connector features a 4-position vertical mounting design with solder termination and solder retention capabilities. The product is currently classified as obsolete, which necessitates identification of equivalent substitute components for ongoing production and maintenance requirements. Substitute parts must maintain electrical compatibility, mechanical fit, and compliance certifications while accommodating the transition from obsolete to active product status.

Substiute Parts

A-USB-B-SMT-TOP-R

Assmann WSW ComponentsIn Stock: 826A-USB-B-SMT-TOP-R Datasheet

Current PartRFQ

A-USB-B/SMT-TOP

Assmann WSW ComponentsIn Stock: 1025A-USB-B/SMT-TOP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A-USB-B-SMT-TOP-R is determined by strict alignment with the following critical parameters:

Electrical Compatibility Parameters:

• Connector Type: USB-B (USB TYPE-B)
• Number of Contacts: 4
• Gender: Receptacle
• Current Rating: 1.5A minimum
• Operating Temperature Range: -55°C ~ 85°C minimum

Mechanical Compatibility Parameters:

• Mounting Type: Surface Mount
• Mounting Feature: Vertical
• Termination: Solder
• Contact Finish: Gold
• Shell/Shielding Material: Brass

Compliance Parameters:

• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

The A-USB-B/SMT-TOP qualifies as a direct substitute based on identical alignment across all critical electrical, mechanical, and compliance parameters. The transition from USB 1.1 to USB 2.0 specification represents backward compatibility, as USB 2.0 receptacles accept USB 1.1 plugs without functional degradation. The addition of shielding and board guide features in the substitute part provides enhanced performance characteristics without compromising mechanical or electrical interchangeability.

Parameter Comparison

Engineering Selection Recommendations

The A-USB-B/SMT-TOP is the qualified substitute for the obsolete A-USB-B-SMT-TOP-R. Selection of this substitute part is supported by the following engineering factors:

Product Status Transition: The main part is classified as obsolete, while the substitute maintains active product status with confirmed inventory availability (964 Pcs New Original In Stock). This transition ensures long-term supply chain continuity and manufacturing support.

Compliance Certification Alignment: Both parts maintain identical compliance certifications: ROHS3 Compliant and REACH Unaffected. Material flammability rating (UL94 V-0) is preserved across both components, ensuring regulatory requirements are met without modification to existing designs.

Electrical and Mechanical Interchangeability: All critical electrical parameters (4-position receptacle, 1.5A current rating, -55°C ~ 85°C operating temperature, 1500 mating cycles) and mechanical parameters (surface mount vertical configuration, solder termination, gold contact finish, brass shell material) are identical between the main part and substitute.

Enhanced Features: The substitute part includes shielding and board guide features not specified in the main part. These additions provide improved electromagnetic interference (EMI) performance and enhanced mechanical stability during assembly without introducing incompatibility.

Frequently Asked Questions (FAQ)

Q: Can the A-USB-B/SMT-TOP be used as a direct replacement for the A-USB-B-SMT-TOP-R in existing designs?

A: Yes. The substitute part maintains identical electrical specifications (4-position receptacle, 1.5A current rating, -55°C ~ 85°C operating temperature), mechanical configuration (surface mount vertical solder termination), and compliance certifications (ROHS3 Compliant, REACH Unaffected). No design modifications are required.

Q: What is the difference between USB 1.1 and USB 2.0 specifications in these connectors?

A: The A-USB-B/SMT-TOP is specified for USB 2.0, while the main part is specified for USB 1.1. USB 2.0 receptacles are backward compatible with USB 1.1 plugs. The connector mechanical and electrical interface remains identical; the specification difference reflects the connector's capability to support higher data rates without affecting physical interchangeability.

Q: Does the addition of shielding in the substitute part affect mechanical fit?

A: No. The shielding is integrated into the connector design without altering the mounting footprint, vertical orientation, or solder pad configuration. The substitute part maintains identical surface mount mechanical compatibility.

Q: Are there any compliance or certification differences between the two parts?

A: No. Both parts maintain identical compliance status: ROHS3 Compliant, REACH Unaffected, and UL94 V-0 material flammability rating. No additional certifications or compliance modifications are introduced by the substitute part.

Q: What is the inventory status of the substitute part?

A: The A-USB-B/SMT-TOP is actively manufactured with confirmed inventory of 964 Pcs New Original In Stock, ensuring reliable supply availability for production and maintenance applications.