AP432AYG-13R Equivalent & Substitute Parts

Part Overview

The AP432AYG-13R is a Shunt Voltage Reference IC manufactured by Diodes Incorporated, classified as a Power Management (PMIC) component. This adjustable shunt voltage reference operates with a minimum output voltage of 1.24V and maximum output voltage of 20V, delivering up to 200mA output current with ±0.5% tolerance. The device is packaged in SOT-89-3 surface mount configuration.

The AP432AYG-13R is currently listed as Obsolete. Locating equivalent substitute parts is necessary to support ongoing production requirements, maintenance operations, and system redesigns where this component is specified in existing designs.

Substiute Parts

AP432AYG-13R

Diodes IncorporatedIn Stock: 8133AP432AYG-13R Datasheet

Current PartRFQ

AZ431LARTR-G1

Diodes IncorporatedIn Stock: 35341AZ431LARTR-G1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP432AYG-13R is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Reference Type: Shunt (functional equivalence)
• Output Type: Adjustable (functional equivalence)
• Voltage - Output (Min/Fixed): 1.24V (must match)
• Tolerance: ±0.5% (must match)
• Package / Case: TO-243AA / SOT-89-3 (mechanical compatibility)
• Mounting Type: Surface Mount (assembly compatibility)

Substitution Constraints:

• Voltage - Output (Max): Substitute must support the required maximum output voltage of the application
• Current - Output: Substitute must deliver sufficient output current for the application
• Operating Temperature Range: Substitute must cover the required operating conditions
• RoHS Status: Substitute must maintain compliance requirements

The AZ431LARTR-G1 qualifies as a substitute based on matching reference type, output type, minimum output voltage, tolerance, package configuration, and mounting type. Differences in maximum output voltage (18V vs. 20V), output current (100mA vs. 200mA), and operating temperature range must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

AP432AYG-13R Status: The AP432AYG-13R is classified as Obsolete. This designation indicates that the manufacturer has discontinued production and support for this component. Continued reliance on this part number for new production or long-term inventory is not viable.

AZ431LARTR-G1 Qualification: The AZ431LARTR-G1 is classified as Active and is manufactured by the same supplier (Diodes Incorporated). This part maintains ROHS3 compliance and carries an MSL rating of 1 (Unlimited), indicating superior moisture handling characteristics. The active product status ensures ongoing availability and manufacturer support.

Selection Basis:

• Both components share identical reference type (Shunt), output type (Adjustable), minimum output voltage (1.24V), tolerance (±0.5%), and package configuration (TO-243AA / SOT-89-3)
• The AZ431LARTR-G1 provides an extended operating temperature range (-40°C to 125°C versus -20°C to 85°C), supporting broader application environments
• The AZ431LARTR-G1 demonstrates improved temperature coefficient performance (20ppm/°C typical versus 30ppm/°C)
• Compliance certifications are maintained across both components

Application-Specific Evaluation: Selection of the AZ431LARTR-G1 requires verification that the application does not demand the full 200mA output current of the AP432AYG-13R or the maximum 20V output voltage. Applications requiring these specifications must pursue alternative solutions or custom sourcing strategies.

Frequently Asked Questions (FAQ)

Q: Can the AZ431LARTR-G1 directly replace the AP432AYG-13R in existing designs?

A: Direct replacement is possible only when the application requirements do not exceed the AZ431LARTR-G1 specifications. The substitute part delivers 100mA maximum output current (versus 200mA) and supports 18V maximum output voltage (versus 20V). Circuit designs operating within these limits are compatible. Designs requiring the full 200mA output current or 20V maximum voltage require alternative solutions.

Q: What are the key electrical differences between these parts?

A: The primary electrical differences are output current capacity (200mA versus 100mA), maximum output voltage (20V versus 18V), cathode current (300µA versus 80µA), and temperature coefficient (30ppm/°C versus 20ppm/°C typical). Both parts maintain identical minimum output voltage (1.24V) and tolerance (±0.5%).

Q: Are both parts available in the same package configuration?

A: Yes. Both the AP432AYG-13R and AZ431LARTR-G1 are packaged in TO-243AA (SOT-89-3) surface mount configuration. No PCB layout modifications are required for package compatibility.

Q: What is the significance of the AZ431LARTR-G1 being listed as Active versus the AP432AYG-13R being Obsolete?

A: Active product status indicates that the AZ431LARTR-G1 is currently manufactured, supported by the supplier, and available through distribution channels. Obsolete status for the AP432AYG-13R indicates discontinued production and limited future availability. For new designs and ongoing production, the active part number is the appropriate selection.

Q: Does the AZ431LARTR-G1 maintain the same compliance certifications?

A: Yes. Both components are ROHS3 compliant and carry EAR99 ECCN classification. The AZ431LARTR-G1 additionally specifies REACH Unaffected status and MSL 1 (Unlimited) moisture sensitivity level, indicating enhanced environmental and handling characteristics.

Q: What is the operating temperature range difference, and does it matter?

A: The AP432AYG-13R operates from -20°C to 85°C, while the AZ431LARTR-G1 operates from -40°C to 125°C. The substitute part provides extended low-temperature and high-temperature capability. Applications operating within the narrower range of the obsolete part are fully supported by the substitute. Applications requiring operation below -20°C or above 85°C benefit from the extended range of the substitute.

Q: How do the cathode current specifications affect circuit design?

A: The AP432AYG-13R specifies 300µA cathode current, while the AZ431LARTR-G1 specifies 80µA. Lower cathode current in the substitute part reduces quiescent current draw and improves efficiency in battery-powered or low-power applications. Existing circuit designs must verify that bias network resistor values are compatible with the lower cathode current specification.