AP432ASAG-7 Equivalent & Substitute Parts

Part Overview

The AP432ASAG-7 is a shunt voltage reference IC manufactured by Diodes Incorporated, designed for adjustable voltage reference applications in power management circuits. This component 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 identification of equivalent and substitute components essential for ongoing design support and production continuity.

Substiute Parts

AP432ASAG-7

Diodes IncorporatedIn Stock: 3019AP432ASAG-7 Datasheet

Current PartRFQ

AP432AWG-7

Diodes IncorporatedIn Stock: 24379AP432AWG-7 Datasheet

Parametric EquivalentRFQ

LX432ISC

Microchip TechnologyIn Stock: 4147LX432ISC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AP432ASAG-7 are identified based on the following critical parameters that determine functional compatibility:

Core Substitution Criteria:

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

Acceptable Variation Parameters:

• Current - Output: Tolerance of ±10% acceptable for most applications
• Tolerance: Variation from ±0.5% to ±1% acceptable depending on circuit requirements
• Temperature Coefficient: Variation acceptable if within application specifications
• Operating Temperature Range: Extended range acceptable; narrower range requires verification
• Current - Cathode: Variation acceptable within circuit design margins

The AP432ASAG-7 has one parametric equivalent and one manufacturer-recommended substitute identified in the provided data.

Parameter Comparison

Engineering Selection Recommendations

AP432AWG-7 (Parametric Equivalent): This part is a direct parametric equivalent from Diodes Incorporated with identical electrical specifications to the AP432ASAG-7. The primary difference is the package variant (SC-59-3 versus SOT-23-3), which represents the same physical form factor with different supplier designations. Both parts are obsolete with ROHS3 compliance. The AP432AWG-7 carries MSL rating 3, requiring controlled storage conditions (168 hours maximum at 30°C/60% RH), compared to the unlimited MSL of the original part. Selection of this substitute requires verification that moisture sensitivity handling procedures are compatible with production processes.

LX432ISC (Manufacturer-Recommended Substitute): The LX432ISC from Microchip Technology is the manufacturer-recommended substitute, offering active product status and extended operating temperature range (-40°C to 85°C). This part maintains the core shunt reference architecture with identical 1.24V minimum and 20V maximum output voltage specifications. Key differences include reduced output current capability (20 mA versus 200 mA) and relaxed tolerance specification (±1% versus ±0.5%). The lower cathode current (80 µA versus 300 µA) reduces quiescent power consumption. Selection of this substitute is appropriate for applications where the reduced output current and tolerance specifications are acceptable. The active product status ensures long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the AP432AWG-7 be used as a direct replacement for the AP432ASAG-7?

A: The AP432AWG-7 is electrically equivalent with identical voltage reference specifications, output current rating, and tolerance. The package designation differs (SC-59-3 versus SOT-23-3), but both represent the same three-pin surface mount form factor. The primary consideration is the MSL rating difference: AP432AWG-7 requires MSL 3 handling (168 hours maximum exposure), while AP432ASAG-7 has unlimited MSL. Compatibility depends on production moisture control procedures.

Q: What are the limitations of using LX432ISC as a substitute?

A: The LX432ISC reduces output current capability from 200 mA to 20 mA. This substitution is suitable only for applications where the circuit design requires less than 20 mA output current. The tolerance specification is ±1% compared to ±0.5%, which may affect precision voltage reference applications. The lower cathode current (80 µA) is advantageous for low-power designs. The active product status provides superior long-term availability compared to the obsolete AP432ASAG-7.

Q: Are all three parts pin-compatible?

A: All three parts maintain the three-pin shunt reference architecture (cathode, reference output, and adjustment pin). Physical package dimensions for SOT-23-3 and SC-59-3 are equivalent, ensuring PCB footprint compatibility. The LX432ISC uses SOT-23 packaging, which is mechanically compatible with SOT-23-3 footprints. Pin functionality is identical across all three parts.

Q: Which substitute should be selected for new designs?

A: For new designs, the LX432ISC is the recommended choice due to its active product status, ensuring availability throughout the product lifecycle. The extended operating temperature range (-40°C to 85°C) provides additional design margin. The reduced output current and relaxed tolerance are acceptable for most applications. If the original 200 mA output current is required, the AP432AWG-7 provides electrical equivalence, though with obsolete status and MSL handling requirements.

Q: What compliance certifications apply to all substitute options?

A: All three parts maintain ROHS3 compliance and REACH unaffected status. All parts carry EAR99 export classification and HTSUS code 8542.39.0001. Compliance certifications are consistent across the AP432ASAG-7, AP432AWG-7, and LX432ISC.