AP431YG-13 Equivalent & Substitute Parts

Part Overview

The AP431YG-13 is a shunt voltage reference IC manufactured by Diodes Incorporated, designed for adjustable voltage regulation applications. This component operates as an adjustable reference with a minimum output voltage of 2.495V and maximum of 36V, delivering up to 200mA output current with ±1% tolerance. The device is housed in a SOT-89-3 surface mount package.

The AP431YG-13 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this reference architecture.

Substiute Parts

AP431YG-13

Diodes IncorporatedIn Stock: 35323AP431YG-13 Datasheet

Current PartRFQ

AS431BRTR-G1

Diodes IncorporatedIn Stock: 35126AS431BRTR-G1 Datasheet

MFR RecommendedRFQ

LM431SCCMLX

onsemiIn Stock: 19203LM431SCCMLX Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP431YG-13 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Reference type: Shunt voltage reference
• Output type: Adjustable
• Voltage range: Minimum output ≥2.495V, maximum output ≥36V
• Output current capability: Minimum 200mA (or lower if application permits)
• Tolerance: ±1% or better
• Temperature coefficient: Acceptable range for application stability
• Cathode current: Must support circuit biasing requirements

Mechanical Compatibility Criteria:

• Package type: SOT-89-3 (TO-243AA)
• Surface mount configuration
• Pin-compatible footprint

Compliance Requirements:

• RoHS3 compliance
• REACH unaffected status

Substitute parts must maintain electrical equivalence within these parameters while offering improved product status (active vs. obsolete) and enhanced availability.

Parameter Comparison

Engineering Selection Recommendations

AS431BRTR-G1 (Diodes Incorporated): This substitute maintains manufacturer continuity with Diodes Incorporated and shares the same base product architecture (AS431 series). The part is active and available in Tape & Reel packaging. Output current is reduced to 100mA compared to the 200mA specification of the AP431YG-13. This part is suitable for applications where the 100mA output current specification is sufficient. Operating temperature range extends to -40°C ~ 125°C, providing broader environmental coverage. Temperature coefficient improves to 20ppm/°C typical. RoHS3 compliance and REACH unaffected status are maintained.

LM431SCCMLX (onsemi): This substitute offers superior tolerance specification at ±0.5% compared to the ±1% of the AP431YG-13, providing tighter voltage regulation accuracy. The part is active and available in Cut Tape and Digi-Reel packaging. Output current is reduced to 100mA. Moisture sensitivity level improves to MSL 1 (unlimited), indicating superior moisture resistance. Operating temperature range is -25°C ~ 85°C. RoHS3 compliance and REACH unaffected status are maintained. This part is suitable for applications requiring enhanced voltage accuracy and improved moisture handling characteristics.

Both substitutes are electrically and mechanically compatible with the AP431YG-13 within the SOT-89-3 package footprint. Selection between substitutes depends on specific application requirements regarding output current capacity, temperature range, voltage tolerance, and moisture sensitivity considerations.

Frequently Asked Questions (FAQ)

Q: Can AS431BRTR-G1 directly replace AP431YG-13 in all applications?

A: AS431BRTR-G1 is mechanically and electrically compatible in the SOT-89-3 package. However, the output current specification is 100mA versus 200mA for the AP431YG-13. Verify that your application does not require output current exceeding 100mA. If output current demand is within 100mA, direct substitution is feasible.

Q: What is the primary difference between AS431BRTR-G1 and LM431SCCMLX?

A: Both parts provide 100mA output current and are pin-compatible in SOT-89-3 packages. LM431SCCMLX offers tighter tolerance (±0.5% vs. ±1%), superior moisture sensitivity (MSL 1 vs. MSL 3), and is manufactured by onsemi rather than Diodes Incorporated. AS431BRTR-G1 provides better temperature coefficient performance (20ppm/°C vs. 50ppm/°C) and extended operating temperature range (-40°C ~ 125°C vs. -25°C ~ 85°C).

Q: Is the 2.5V minimum output voltage of AS431BRTR-G1 compatible with the 2.495V specification of AP431YG-13?

A: The 2.5V minimum output of AS431BRTR-G1 is marginally higher than the 2.495V of AP431YG-13. For applications requiring precise 2.495V operation, LM431SCCMLX matches this specification exactly. Evaluate circuit tolerance requirements to determine if the 5mV difference is acceptable.

Q: Are all three parts RoHS3 compliant?

A: Yes. AP431YG-13, AS431BRTR-G1, and LM431SCCMLX are all ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What packaging options are available for these substitutes?

A: AP431YG-13 is supplied in bulk packaging. AS431BRTR-G1 is available in Tape & Reel (TR) format. LM431SCCMLX is available in Cut Tape (CT) and Digi-Reel® formats. Select packaging based on production volume and assembly requirements.

Q: If my application requires 200mA output current, what are my options?

A: Neither AS431BRTR-G1 nor LM431SCCMLX provides 200mA output current; both are rated at 100mA maximum. For applications requiring 200mA output current, the AP431YG-13 remains the only specified option among these parts. Consult additional reference designs or alternative product families if 200mA output is mandatory.