AP131-33YL-13 Equivalent & Substitute Parts

Part Overview

The AP131-33YL-13 is a linear voltage regulator IC from Diodes Incorporated designed for positive fixed 3.3V output applications with 300mA current capacity in SOT-89-5 surface mount packaging. This part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity. The AP131 series provides regulated power management for low-voltage applications requiring stable 3.3V rails with integrated over-current and over-temperature protection.

Substiute Parts

AP131-33YL-13

Diodes IncorporatedIn Stock: 1054AP131-33YL-13 Datasheet

Current PartRFQ

AP130-33RG-7

Diodes IncorporatedIn Stock: 1300AP130-33RG-7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP131-33YL-13 is determined by the following critical electrical and mechanical parameters:

• Output voltage specification: 3.3V fixed
• Output current capability: 300mA minimum
• Input voltage tolerance: 5.5V maximum
• Dropout voltage: 0.5V @ 300mA maximum
• Protection features: Over-current and over-temperature protection required
• Operating temperature range: -40°C ~ 85°C
• Regulatory compliance: ROHS3 and REACH requirements

The AP130-33RG-7 qualifies as a manufacturer-recommended substitute based on matching all critical electrical parameters. While the package format differs (SC-59R versus SOT-89-5), both are surface mount technologies with compatible pinout configurations for the three-terminal linear regulator topology.

Parameter Comparison

Engineering Selection Recommendations

The AP130-33RG-7 is the manufacturer-recommended substitute for the obsolete AP131-33YL-13. Both components maintain identical electrical specifications for output voltage, current capacity, input voltage range, and dropout voltage performance. The substitute part carries active product status from Diodes Incorporated, ensuring continued availability and manufacturing support.

Both parts satisfy ROHS3 compliance and REACH requirements, meeting current regulatory standards for electronic component procurement. The AP130-33RG-7 provides enhanced protection features including short-circuit protection in addition to the over-current and over-temperature functions present in the original part.

Package format transition from SOT-89-5 to SC-59R requires PCB layout modification. Both packages are three-terminal surface mount configurations suitable for linear regulator applications. Design teams must verify PCB footprint compatibility and thermal management requirements for the selected package format.

Frequently Asked Questions (FAQ)

Q: Can the AP130-33RG-7 directly replace the AP131-33YL-13 without circuit modifications?

A: Electrical substitution is direct due to identical output voltage, current rating, and protection specifications. PCB layout modification is required due to different package formats (SOT-89-5 versus SC-59R). Pin configuration remains compatible for three-terminal linear regulator topology.

Q: What is the primary reason for substitution?

A: The AP131-33YL-13 is classified as obsolete. The AP130-33RG-7 is an active product from the same manufacturer with equivalent electrical performance and enhanced protection features.

Q: Are there thermal management differences between the packages?

A: Both SOT-89-5 and SC-59R are surface mount packages with thermal characteristics suitable for 300mA linear regulator applications. Specific thermal performance depends on PCB copper area, via placement, and thermal design implementation.

Q: Does the PSRR difference (60dB versus 58dB) affect substitution suitability?

A: The 2dB difference in power supply rejection ratio at 100Hz is within acceptable tolerance for most 3.3V regulator applications. Both values provide adequate noise rejection for standard digital logic supply applications.

Q: What compliance certifications apply to both parts?

A: Both the AP131-33YL-13 and AP130-33RG-7 are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement and use.