AP432AWG-7 Equivalent & Substitute Parts

Part Overview

The AP432AWG-7 is a shunt voltage reference IC manufactured by Diodes Incorporated, designed for adjustable voltage regulation applications in power management circuits. This device provides a fixed 1.24V output with adjustable capability up to 20V, supporting output currents of 200 mA with ±0.5% tolerance. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Designers requiring this functionality must evaluate active alternatives that maintain electrical compatibility within the specified parameter ranges.

Substiute Parts

AP432AWG-7

Diodes IncorporatedIn Stock: 24379AP432AWG-7 Datasheet

Current PartRFQ

AZ431LANTR-E1

Diodes IncorporatedIn Stock: 185111AZ431LANTR-E1 Datasheet

MFR RecommendedRFQ

AP432AWG-7

Diodes IncorporatedIn Stock: 24379AP432AWG-7 Datasheet

Parametric EquivalentRFQ

LX432CSC

Microchip TechnologyIn Stock: 3905LX432CSC Datasheet

MFR RecommendedRFQ

LX432ISC

Microchip TechnologyIn Stock: 4147LX432ISC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP432AWG-7 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Reference type: Shunt voltage reference
• Output type: Adjustable
• Minimum output voltage: 1.24V fixed
• Maximum output voltage: 20V or greater
• Tolerance: ±0.5% or better
• Package compatibility: SOT-23-3 or SC-59-3
• Mounting type: Surface Mount

Substitute Categories:

Category 1: Direct Electrical Equivalent (MFR Recommended) The AZ431LANTR-E1 from Diodes Incorporated meets all primary electrical parameters with enhanced specifications. While maximum output voltage is reduced to 18V and output current to 100 mA, the ±0.5% tolerance, adjustable output type, and SOT-23-3 package provide functional equivalence for applications not requiring the full 200 mA output capacity.

Category 2: Parametric Equivalents (Tolerance Trade-off) The LX432ISC and LX432CSC from Microchip Technology provide shunt voltage reference functionality with identical output voltage range (1.24V to 20V) and SOT-23 packaging. These parts operate at ±1% tolerance versus the ±0.5% of the AP432AWG-7, representing a relaxed tolerance specification suitable for applications with less stringent accuracy requirements. Output current is limited to 20 mA, restricting use to low-current reference applications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Recommended Primary Choice): The AZ431LANTR-E1 is the manufacturer-recommended substitute from Diodes Incorporated. This part maintains ±0.5% tolerance matching the original AP432AWG-7 and extends the operating temperature range to -40°C ~ 125°C. The active product status ensures long-term availability and supply chain continuity. Selection of this part is appropriate for applications where output current requirements do not exceed 100 mA and maximum output voltage does not exceed 18V.

For Applications with Relaxed Tolerance Requirements: The LX432ISC from Microchip Technology is an active product suitable for designs tolerating ±1% output voltage tolerance. This part maintains the full 20V maximum output voltage range and operates across -40°C ~ 85°C, providing extended low-temperature performance. The 20 mA output current limitation restricts use to reference and biasing applications with minimal load current.

For Legacy System Support: The LX432CSC provides equivalent electrical specifications to the LX432ISC but operates within a narrower temperature range (0°C ~ 70°C). This part is obsolete and should be selected only when existing inventory is available and long-term supply is not required.

Frequently Asked Questions (FAQ)

Q: Can the AZ431LANTR-E1 directly replace the AP432AWG-7 in all applications? A: The AZ431LANTR-E1 provides direct electrical substitution for applications requiring output currents up to 100 mA and maximum output voltages up to 18V. Applications requiring the full 200 mA output capacity or output voltages above 18V require circuit redesign or alternative component selection.

Q: What is the primary difference between the AP432AWG-7 and LX432ISC? A: The primary difference is output voltage tolerance: AP432AWG-7 specifies ±0.5% while LX432ISC specifies ±1%. Both parts support 20V maximum output voltage and SOT-23-3 packaging. The LX432ISC is active and available, while AP432AWG-7 is obsolete.

Q: Are all substitute parts available in the same package? A: All substitute parts are available in SOT-23-3 (TO-236-3, SC-59) surface mount packages, ensuring mechanical and thermal compatibility with the original AP432AWG-7 footprint.

Q: Which substitute part offers the best temperature performance? A: The AZ431LANTR-E1 provides the widest operating temperature range (-40°C ~ 125°C) among active substitutes, exceeding the original AP432AWG-7 specification of -20°C ~ 85°C.

Q: Can LX432ISC or LX432CSC be used in high-current applications? A: No. Both Microchip parts are limited to 20 mA output current, making them unsuitable for applications requiring the 200 mA capacity of the AP432AWG-7. The AZ431LANTR-E1 supports up to 100 mA output current.

Q: What compliance certifications apply to all substitute parts? A: All substitute parts listed are ROHS3 compliant and REACH unaffected, matching the regulatory compliance of the original AP432AWG-7.