LX432ISC Equivalent & Substitute Parts

Part Overview

The LX432ISC is an adjustable shunt voltage reference integrated circuit manufactured by Microchip Technology. This Surface Mount device operates as a precision voltage reference with an adjustable output range from 1.24V to 20V, delivering up to 20mA output current with ±1% tolerance. The component is classified as a Power Management PMIC and is housed in a SOT-23-3 package.

The LX432ISC maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and functional equivalence within the adjustable shunt voltage reference category.

Substiute Parts

LX432ISC

Microchip TechnologyIn Stock: 4147LX432ISC Datasheet

Current PartRFQ

AP432SAG-7

Diodes IncorporatedIn Stock: 21346AP432SAG-7 Datasheet

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LMV431AIMF/NOPB

Texas InstrumentsIn Stock: 16178LMV431AIMF/NOPB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LX432ISC are qualified based on the following critical parameters that determine functional equivalence:

Electrical Compatibility Criteria:

• Reference Type: Shunt (all substitutes must be shunt-type references)
• Output Type: Adjustable (all substitutes must provide adjustable output)
• Minimum Output Voltage: 1.24V (all substitutes must support this baseline)
• Tolerance: ±1% (all substitutes must meet or exceed this accuracy specification)
• Current - Cathode: 80µA (all substitutes must match this specification)
• Operating Temperature Range: -40°C ~ 85°C (all substitutes must support this range)

Package and Mechanical Compatibility Criteria:

• Package / Case: SOT-23-3 (all substitutes must use identical package)
• Mounting Type: Surface Mount (all substitutes must be surface mount)

Compliance and Regulatory Criteria:

• RoHS3 Compliance (all substitutes must maintain compliance)
• Moisture Sensitivity Level: 1 (Unlimited) (all substitutes must match or exceed)

The identified substitutes meet these criteria while maintaining functional equivalence within the adjustable shunt voltage reference product category.

Parameter Comparison

Engineering Selection Recommendations

LX432ISC (Microchip Technology) - Primary Selection

The LX432ISC is the primary reference component with Active product status, ensuring long-term availability and supply chain stability. This part is recommended for new designs and applications requiring sustained production support.

LMV431AIMF/NOPB (Texas Instruments) - Preferred Substitute

The LMV431AIMF/NOPB qualifies as the preferred substitute for the LX432ISC. Both components share identical minimum output voltage (1.24V), tolerance (±1%), cathode current (80µA), operating temperature range (-40°C ~ 85°C), and package specification (SOT-23-3). The LMV431AIMF/NOPB provides a higher maximum output voltage (30V versus 20V) and lower output current rating (15mA versus 20mA), making it suitable for applications within the LX432ISC's operational envelope. The LMV431AIMF/NOPB maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. This part is available in Cut Tape and Digi-Reel packaging formats.

AP432SAG-7 (Diodes Incorporated) - Legacy Substitute

The AP432SAG-7 is identified as a substitute based on cross-reference documentation; however, this part carries Obsolete product status. Detailed electrical specifications for the AP432SAG-7 are not provided in the available technical data. This part is not recommended for new designs or applications requiring long-term supply assurance. The AP432SAG-7 maintains RoHS3 compliance and unlimited moisture sensitivity rating but should be considered only for legacy system maintenance or replacement scenarios where supply continuity is not a primary concern.

Frequently Asked Questions (FAQ)

Q: Can the LMV431AIMF/NOPB directly replace the LX432ISC in all applications?

A: The LMV431AIMF/NOPB is electrically compatible with the LX432ISC for applications operating within the LX432ISC's specified output voltage range (1.24V to 20V) and output current requirements (up to 20mA). The LMV431AIMF/NOPB's higher maximum output voltage (30V) and lower output current rating (15mA) do not create incompatibility within these constraints. Both components share identical package specifications (SOT-23-3), tolerance (±1%), and operating temperature range (-40°C ~ 85°C).

Q: What is the difference between the LX432ISC and LMV431AIMF/NOPB output current ratings?

A: The LX432ISC provides a maximum output current of 20mA, while the LMV431AIMF/NOPB provides 15mA. For applications requiring output current between 15mA and 20mA, the LX432ISC is the appropriate selection. For applications requiring 15mA or less, both parts are functionally equivalent.

Q: Why is the AP432SAG-7 listed as a substitute if it is obsolete?

A: The AP432SAG-7 is included in the substitute list based on cross-reference documentation provided in the input parameters. However, its Obsolete product status indicates that this part is no longer in active production. The AP432SAG-7 should not be selected for new designs. This part is documented for reference purposes only, particularly for legacy system maintenance scenarios.

Q: Are all three parts available in the same packaging format?

A: All three parts use the SOT-23-3 package and are Surface Mount devices. However, packaging formats differ: the LX432ISC is supplied in Tube packaging, the AP432SAG-7 is supplied in Cut Tape format, and the LMV431AIMF/NOPB is available in both Cut Tape and Digi-Reel formats. These packaging differences do not affect electrical compatibility but may influence procurement and assembly processes.

Q: Do all substitute parts meet the same compliance standards as the LX432ISC?

A: Yes. The LX432ISC, AP432SAG-7, and LMV431AIMF/NOPB all maintain RoHS3 compliance, REACH Unaffected status, and Moisture Sensitivity Level 1 (Unlimited). All three parts carry the same ECCN (EAR99) and HTSUS (8542.39.0001) classifications.

Q: What is the operating temperature range for these components?

A: The LX432ISC and LMV431AIMF/NOPB both operate across the temperature range of -40°C to 85°C (TA). This specification ensures consistent performance across industrial and commercial temperature environments.

Q: Can I use the LMV431AIMF/NOPB in a design originally specified for the LX432ISC?

A: Yes, provided the application operates within the LX432ISC's specified output voltage range (1.24V to 20V) and output current requirements (up to 20mA). The LMV431AIMF/NOPB's higher maximum output voltage (30V) and lower output current rating (15mA) do not create functional incompatibility within these constraints. Both components share identical electrical characteristics for tolerance (±1%), cathode current (80µA), and operating temperature range (-40°C ~ 85°C).