AP432SRG-7 Equivalent & Substitute Parts

Part Overview

The AP432SRG-7 is a shunt voltage reference IC manufactured by Diodes Incorporated, designed for adjustable output voltage regulation in power management applications. This component operates with a fixed output of 1.24V, adjustable up to 20V, and supports 200mA output current with ±1% tolerance. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

AP432SRG-7

Diodes IncorporatedIn Stock: 4013AP432SRG-7 Datasheet

Current PartRFQ

AZ431LBNTR-G1

Diodes IncorporatedIn Stock: 125156AZ431LBNTR-G1 Datasheet

MFR RecommendedRFQ

AP432RL-7

Diodes IncorporatedIn Stock: 17962AP432RL-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 AP432SRG-7 is determined by the following critical parameters:

Primary Substitution Criteria:

• Reference type: Shunt voltage reference
• Output type: Adjustable
• Minimum output voltage: 1.24V
• Maximum output voltage: 20V or greater
• Output current capability: 200mA or greater
• Tolerance: ±1%
• Package compatibility: SOT-23-3 or equivalent footprint
• RoHS3 compliance

Substitution Categories:

MFR Recommended Substitute: AZ431LBNTR-G1 meets the core functional requirements with active product status, though with reduced output current (100mA) and lower maximum voltage (18V). This part is suitable where the lower current rating does not exceed application requirements.

Parametric Equivalent: AP432RL-7 maintains identical electrical specifications to the main part (20V maximum, 200mA output, 30ppm/°C temperature coefficient) with the same obsolete status. The difference is packaging format (SC-59R vs SOT23R).

Functional Alternatives: LX432ISC and LX432CSC are Microchip Technology shunt voltage references with identical output voltage range (1.24V to 20V) and tolerance (±1%), but with reduced output current capability (20mA). These parts are suitable only for applications with lower current demands.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): AP432RL-7 is the parametric equivalent with identical electrical performance (20V maximum output, 200mA current, 30ppm/°C temperature coefficient). Both parts share obsolete status. Selection between AP432SRG-7 and AP432RL-7 depends on package footprint requirements: SOT23R versus SC-59R.

For Active Product Status with Reduced Current Capability: AZ431LBNTR-G1 is the manufacturer-recommended substitute with active product status, ensuring long-term availability. This part operates within the same voltage range (1.24V to 18V) and tolerance specification (±1%), but supports only 100mA output current. This substitution is valid only when application current requirements do not exceed 100mA. The part offers improved temperature range (-40°C to 125°C) and lower temperature coefficient (20ppm/°C typical).

For Low-Current Applications: LX432ISC and LX432CSC are functional alternatives suitable only for applications requiring 20mA or less output current. LX432ISC maintains active product status with extended temperature range (-40°C to 85°C). Both parts provide identical voltage specifications and tolerance to the main part.

Compliance Considerations: All substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the main part. MSL ratings vary: AP432RL-7 and AZ431LBNTR-G1 require MSL 3 handling (168 hours), while LX432ISC and LX432CSC require only MSL 1 handling.

Frequently Asked Questions (FAQ)

Q: Can AZ431LBNTR-G1 directly replace AP432SRG-7 in all applications? A: AZ431LBNTR-G1 is suitable only when application output current requirements do not exceed 100mA. The maximum output voltage is also reduced from 20V to 18V. Verify circuit current demands before substitution.

Q: What is the difference between AP432RL-7 and AP432SRG-7? A: Both parts are manufactured by Diodes Incorporated with identical electrical specifications (20V maximum, 200mA output, ±1% tolerance, 30ppm/°C). The primary difference is the package format: AP432SRG-7 uses SOT23R packaging while AP432RL-7 uses SC-59R packaging. Both are obsolete.

Q: Are LX432ISC and LX432CSC suitable for high-current applications? A: No. Both Microchip parts support only 20mA output current, significantly lower than the AP432SRG-7 specification of 200mA. These parts are suitable only for low-current reference applications.

Q: What are the temperature range differences among substitutes? A: AP432SRG-7 and AP432RL-7 operate from -20°C to 85°C. AZ431LBNTR-G1 extends this to -40°C to 125°C. LX432ISC operates from -40°C to 85°C, while LX432CSC is limited to 0°C to 70°C.

Q: Do all substitute parts maintain RoHS3 compliance? A: Yes. All listed substitute parts (AZ431LBNTR-G1, AP432RL-7, LX432ISC, LX432CSC) are ROHS3 compliant and REACH unaffected, consistent with the main part.

Q: What is the significance of MSL rating differences? A: AP432SRG-7, AP432RL-7, and AZ431LBNTR-G1 require MSL 3 handling with a 168-hour moisture absorption limit. LX432ISC and LX432CSC require only MSL 1 handling with unlimited shelf life. MSL 3 parts require controlled storage and baking procedures before reflow soldering.

Q: Which substitute offers the best long-term availability? A: AZ431LBNTR-G1 is the only active product among the substitutes, ensuring continued manufacturing and supply. All other alternatives are obsolete or have limited availability.