AP432ARL-7 Equivalent & Substitute Parts

Part Overview

The AP432ARL-7 is a shunt voltage reference IC manufactured by Diodes Incorporated, designed for adjustable voltage regulation applications. This component operates with a fixed output voltage of 1.24V, maximum output voltage of 20V, and supports 200mA output current with ±0.5% tolerance. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

AP432ARL-7

Diodes IncorporatedIn Stock: 17024AP432ARL-7 Datasheet

Current PartRFQ

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 for the AP432ARL-7 is determined by the following critical parameters:

• Reference Type: Shunt voltage reference
• Output Type: Adjustable
• Voltage - Output (Min/Fixed): 1.24V
• Voltage - Output (Max): 20V
• Mounting Type: Surface Mount
• Package / Case: TO-236-3, SC-59, SOT-23-3

Substitute parts are grouped into two categories:

Parametric Equivalent: AP432AWG-7 maintains identical electrical specifications (1.24V fixed output, 20V maximum, 200mA output current, ±0.5% tolerance, 30ppm/°C temperature coefficient) with the same base product number (AP432) and differs only in supplier device package designation (SC-59-3 vs SC-59R).

Manufacturer Recommended Alternatives: LX432CSC and LX432ISC are Microchip Technology products that share the same reference type, output type, voltage range (1.24V to 20V), and surface mount packaging. These alternatives operate with ±1% tolerance and reduced output current (20mA vs 200mA), representing functional equivalents for applications where the lower output current specification is acceptable.

Parameter Comparison

Engineering Selection Recommendations

AP432AWG-7 is the direct parametric equivalent to AP432ARL-7. Both parts are manufactured by Diodes Incorporated with identical electrical specifications and operating ranges. The only distinction is the supplier device package designation. Both parts carry obsolete status and ROHS3 compliance. This part should be the primary selection when AP432ARL-7 is unavailable.

LX432ISC is recommended as the preferred long-term substitute. Manufactured by Microchip Technology, this part maintains active product status, ensuring continued availability and supply chain stability. It shares the same reference type, output type, voltage range, and surface mount packaging as the original part. The LX432ISC operates across an extended temperature range (-40°C ~ 85°C) compared to the original (-20°C ~ 85°C), providing broader environmental compatibility. The reduced output current specification (20mA vs 200mA) and lower tolerance (±1% vs ±0.5%) must be evaluated against application requirements.

LX432CSC is an alternative Microchip Technology substitute with identical electrical specifications to LX432ISC but operates within a narrower temperature range (0°C ~ 70°C) and carries obsolete product status. This part is suitable only when the restricted temperature range meets application requirements and when LX432ISC is unavailable.

Frequently Asked Questions (FAQ)

Q: Can AP432AWG-7 be used as a direct replacement for AP432ARL-7?

A: Yes. AP432AWG-7 is a parametric equivalent with identical electrical specifications, tolerance, temperature coefficient, and operating range. Both parts are manufactured by Diodes Incorporated and use compatible surface mount packaging. The difference in supplier device package designation (SC-59-3 vs SC-59R) does not affect functional compatibility.

Q: What are the key differences between the Diodes Incorporated AP432 series and Microchip Technology LX432 series?

A: The primary differences are output current capability and tolerance. The AP432 series (AP432ARL-7 and AP432AWG-7) supports 200mA output current with ±0.5% tolerance, while the LX432 series supports 20mA output current with ±1% tolerance. Both series share the same reference voltage (1.24V), maximum output voltage (20V), and surface mount packaging. The LX432ISC offers active product status and extended temperature range (-40°C ~ 85°C).

Q: Is LX432ISC suitable for applications requiring 200mA output current?

A: No. LX432ISC is rated for 20mA maximum output current, compared to 200mA for AP432ARL-7. Applications requiring the full 200mA output current must use AP432ARL-7 or AP432AWG-7. If LX432ISC is selected, the application circuit must be designed to operate within the 20mA output current limit.

Q: What is the impact of the ±1% tolerance in LX432 parts versus ±0.5% in AP432 parts?

A: The LX432 series tolerance of ±1% is twice as wide as the AP432 series tolerance of ±0.5%. Applications requiring tighter voltage regulation accuracy should prioritize AP432 parts. Applications with less stringent accuracy requirements can accommodate the wider LX432 tolerance.

Q: Can LX432CSC be used in applications requiring operation below 0°C?

A: No. LX432CSC is rated for 0°C ~ 70°C operating temperature. Applications requiring operation below 0°C must use LX432ISC (-40°C ~ 85°C) or AP432 series parts (-20°C ~ 85°C).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. AP432ARL-7, AP432AWG-7, LX432CSC, and LX432ISC are all ROHS3 compliant, meeting environmental and regulatory requirements for lead-free manufacturing.

Q: What is the difference in cathode current between these parts?

A: AP432 series parts (AP432ARL-7 and AP432AWG-7) require 300µA cathode current, while LX432 series parts (LX432CSC and LX432ISC) require 80µA cathode current. The lower cathode current in LX432 parts may reduce power dissipation in applications with limited current sourcing capability.