AP432YG-13 Equivalent & Substitute Parts

Part Overview

The AP432YG-13 is a shunt voltage reference IC manufactured by Diodes Incorporated, designed for adjustable voltage regulation applications. This component provides a fixed 1.24V output with adjustable capability up to 20V, delivering 200mA output current with ±1% tolerance. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement planning.

Key Parameters

Parameter	Value
Manufacturer Part Number	AP432YG-13
Manufacturer	Diodes Incorporated
Category	Power Management (PMIC)
Reference Type	Shunt
Output Type	Adjustable
Voltage - Output (Min/Fixed)	1.24V
Voltage - Output (Max)	20V
Current - Output	200mA
Tolerance	±1%
Temperature Coefficient	30ppm/°C
Current - Cathode	300µA
Operating Temperature	-20°C ~ 85°C (TA)
Package / Case	TO-243AA
Supplier Device Package	SOT-89-3
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the AP432YG-13 is determined by the following critical parameters:

Functional Equivalence Criteria:

Reference type: Shunt voltage reference
Output type: Adjustable
Minimum output voltage: 1.24V fixed
Package compatibility: SOT-89-3 (TO-243AA)
Tolerance specification: ±1%

Allowable Parameter Variations:

Maximum output voltage may be lower than the original part (20V) provided the application requirement is met
Output current capacity may be reduced if the circuit design permits
Temperature coefficient may be improved (lower values acceptable)
Operating temperature range may be extended (wider range acceptable)
Cathode current may be lower (reduced quiescent current acceptable)

The AZ431LBRTR-G1 qualifies as a direct substitute based on identical reference type, output type, minimum voltage, tolerance, and package specifications, while offering improved performance characteristics in temperature coefficient and extended operating range.

Parameter Comparison

Parameter	AP432YG-13	AZ431LBRTR-G1	Compatibility
Manufacturer	Diodes Incorporated	Diodes Incorporated	Same
Reference Type	Shunt	Shunt	Compatible
Output Type	Adjustable	Adjustable	Compatible
Voltage - Output (Min/Fixed)	1.24V	1.24V	Identical
Voltage - Output (Max)	20V	18V	Substitute rated lower
Current - Output	200mA	100mA	Substitute rated lower
Tolerance	±1%	±1%	Identical
Temperature Coefficient	30ppm/°C	20ppm/°C Typical	Substitute improved
Current - Cathode	300µA	80µA	Substitute improved
Operating Temperature	-20°C ~ 85°C	-40°C ~ 125°C	Substitute extended
Package / Case	TO-243AA	TO-243AA	Identical
Supplier Device Package	SOT-89-3	SOT-89-3	Identical
Product Status	Obsolete	Active	Substitute active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical

Engineering Selection Recommendations

The AZ431LBRTR-G1 is the manufacturer-recommended substitute for the obsolete AP432YG-13. Both components are manufactured by Diodes Incorporated and maintain identical RoHS3 compliance and REACH unaffected status.

Selection Basis:

The AZ431LBRTR-G1 maintains functional equivalence through identical reference type (shunt), output type (adjustable), minimum output voltage (1.24V), tolerance (±1%), and physical package (SOT-89-3). The substitute component is currently in active production status, ensuring long-term availability and supply chain continuity.

Parameter Derating Considerations:

Applications utilizing the AP432YG-13 must verify compatibility with the AZ431LBRTR-G1's reduced maximum output voltage (18V versus 20V) and output current capacity (100mA versus 200mA). Designs operating within these reduced specifications will function identically. The substitute offers superior performance through lower temperature coefficient (20ppm/°C typical versus 30ppm/°C) and reduced cathode current (80µA versus 300µA), along with extended operating temperature range (-40°C to 125°C versus -20°C to 85°C).

Frequently Asked Questions (FAQ)

Q: Can the AZ431LBRTR-G1 directly replace the AP432YG-13 in all applications?

A: Direct replacement is possible only when the circuit design operates within the AZ431LBRTR-G1's electrical specifications. The substitute's maximum output voltage of 18V and output current of 100mA must satisfy the application requirements. If the original design requires 20V output or 200mA current, the substitute is not suitable.

Q: What is the significance of the product status change from Obsolete to Active?

A: The AP432YG-13 is obsolete and no longer manufactured. The AZ431LBRTR-G1 is in active production, ensuring availability for new procurement and long-term supply chain support. Existing inventory of the AP432YG-13 should be managed accordingly.

Q: Are the physical packages identical?

A: Yes. Both components use the SOT-89-3 package (TO-243AA case), ensuring identical PCB footprint and mounting compatibility. No layout modifications are required for package substitution.

Q: How do the electrical performance characteristics compare?

A: The AZ431LBRTR-G1 provides improved performance in temperature stability (20ppm/°C typical versus 30ppm/°C) and reduced quiescent current (80µA versus 300µA). The operating temperature range is extended from -20°C to 85°C to -40°C to 125°C. These improvements do not affect functional compatibility.

Q: What compliance certifications apply to both parts?

A: Both the AP432YG-13 and AZ431LBRTR-G1 are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8542.39.0001. Moisture sensitivity level is 1 (unlimited) for both components.

Q: Is the AZ431LBRTR-G1 available in different packaging formats?

A: The AZ431LBRTR-G1 is supplied in Tape & Reel (TR) format. The AP432YG-13 packaging format was not specified in the original documentation. Verify packaging requirements for your procurement process.

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