RT9733GS Equivalent & Substitute Parts

Part Overview

The RT9733GS is a Power Switch/Driver IC manufactured by Richtek USA Inc., designed for USB power switching applications in an 8SOP package configuration. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity. The obsolete status requires engineers to evaluate active substitute components that maintain functional compatibility while meeting current supply chain availability.

Substiute Parts

RT9733GS

Richtek USA Inc.In Stock: 737RT9733GS Datasheet

Current PartRFQ

RT9742MNGJ5

Richtek USA Inc.In Stock: 20259RT9742MNGJ5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RT9733GS is based on functional equivalence within the Power Switch/Driver category. The primary substitute identified is the RT9742MNGJ5, which shares the following critical substitution criteria:

• Manufacturer alignment: Both components are Richtek USA Inc. products, ensuring design continuity and support consistency
• Functional category: Both are Power Switch/Driver ICs designed for power management applications
• Compliance equivalence: Both maintain ROHS3 compliance and identical Moisture Sensitivity Level (MSL 3, 168 Hours)
• Supply chain status: The RT9742MNGJ5 is active with substantial inventory availability (20,200 pcs), addressing the obsolescence of the RT9733GS
• Regulatory alignment: Both are REACH Unaffected, maintaining equivalent regulatory standing

The RT9742MNGJ5 operates as a 1:1 N-Channel power switch with high-side output configuration, providing direct functional replacement capability for USB switching applications.

Parameter Comparison

Engineering Selection Recommendations

The RT9742MNGJ5 is the identified substitute for the obsolete RT9733GS based on functional equivalence and regulatory compliance alignment. Both components maintain ROHS3 compliance and identical MSL ratings, ensuring equivalent environmental and regulatory standing. The RT9742MNGJ5 is currently in active production status with confirmed inventory availability of 20,200 units, providing supply chain continuity for applications previously utilizing the RT9733GS.

Selection of the RT9742MNGJ5 is supported by manufacturer continuity (Richtek USA Inc.), functional category alignment (Power Switch/Driver for USB applications), and compliance equivalence. The transition from 8SOP to TSOT-23-5 packaging requires PCB layout modification but maintains functional compatibility for USB power switching applications.

Frequently Asked Questions (FAQ)

Q: Why is the RT9733GS being replaced? A: The RT9733GS is classified as obsolete. The RT9742MNGJ5 provides functional equivalent capability while maintaining active production status and supply availability.

Q: Are the RT9733GS and RT9742MNGJ5 pin-compatible? A: No. The RT9733GS uses 8SOP packaging while the RT9742MNGJ5 uses TSOT-23-5 packaging. PCB layout redesign is required for substitution.

Q: Do both components meet the same compliance standards? A: Yes. Both the RT9733GS and RT9742MNGJ5 are ROHS3 compliant, REACH Unaffected, and maintain identical Moisture Sensitivity Level (MSL 3, 168 Hours) ratings.

Q: What is the functional difference between these components? A: Both are USB power switches manufactured by Richtek USA Inc. The RT9742MNGJ5 provides specified electrical parameters including 1.5A maximum output current, 70mOhm typical on-resistance, and integrated fault protection (current limiting, over-temperature, reverse current, and UVLO).

Q: Is inventory available for the RT9742MNGJ5? A: Yes. The RT9742MNGJ5 has 20,200 units of new original stock currently available, providing immediate supply for design transitions.

Q: What packaging considerations apply to this substitution? A: The transition from 8SOP to TSOT-23-5 requires PCB footprint modification. The TSOT-23-5 is a surface-mount thin package with reduced board space requirements compared to the 8SOP configuration.