AUR9503-12GD Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The AUR9503-12GD is a linear voltage regulator IC manufactured by Diodes Incorporated, designed to deliver a fixed 1.2V output at 150mA with a maximum input voltage of 5.5V. This device is packaged in a 6-WFDFN (1.6x1.6mm) surface mount configuration with an exposed pad for thermal management.

The AUR9503-12GD is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications utilizing this regulator.

Substiute Parts

AUR9503-12GD

Diodes IncorporatedIn Stock: 48432AUR9503-12GD Datasheet

Current PartRFQ

RT9030-12GQW

Richtek USA Inc.In Stock: 20456RT9030-12GQW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AUR9503-12GD is determined by strict equivalence across the following critical parameters:

Output voltage specification (1.2V fixed), output current capability (150mA minimum), maximum input voltage rating (5.5V), package form factor (6-WFDFN 1.6x1.6mm with exposed pad), and surface mount configuration. Protection features (over current and over temperature) and compliance certifications (ROHS3, REACH Unaffected) are mandatory matching criteria.

The RT9030-12GQW meets all substitution requirements. This part maintains identical output voltage, current rating, input voltage maximum, and package specifications. Both devices are ROHS3 compliant and REACH unaffected, ensuring regulatory equivalence.

Parameter Comparison

Engineering Selection Recommendations

The RT9030-12GQW is the qualified substitute for the obsolete AUR9503-12GD. The RT9030-12GQW maintains active product status, ensuring long-term availability and supply chain stability. Both devices are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

The RT9030-12GQW demonstrates equivalent or superior electrical performance: quiescent current is reduced to 50 µA (versus 55 µA), and operating temperature range extends to 85°C (versus 80°C). PSRR performance is comparable at 67dB ~ 40dB across the specified frequency range. Both devices provide identical output voltage, current capacity, input voltage rating, and package configuration.

Selection of the RT9030-12GQW eliminates obsolescence risk while maintaining full functional and mechanical compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q: Can the RT9030-12GQW directly replace the AUR9503-12GD in existing designs?

A: Yes. Both devices are pin-compatible 6-WFDFN packages with identical output voltage (1.2V), output current (150mA), and maximum input voltage (5.5V) specifications. No circuit modifications are required.

Q: What are the key differences between these parts?

A: The RT9030-12GQW is an active product, whereas the AUR9503-12GD is obsolete. The RT9030-12GQW has lower quiescent current (50 µA vs. 55 µA) and an extended operating temperature range (-40°C to 85°C vs. -40°C to 80°C). Both provide identical protection features and regulatory compliance.

Q: Are both parts available in the same packaging?

A: Yes. Both the AUR9503-12GD and RT9030-12GQW use the 6-WFDFN (1.6x1.6mm) surface mount package with exposed pad. Mechanical compatibility is confirmed.

Q: Do these parts meet current regulatory requirements?

A: Yes. Both the AUR9503-12GD and RT9030-12GQW are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: What is the substitution basis for these parts?

A: Substitution is based on matching output voltage specification (1.2V fixed), output current rating (150mA), maximum input voltage (5.5V), package form factor (6-WFDFN 1.6x1.6mm), protection features (over current and over temperature), and regulatory compliance certifications.