AP1115AY30G-13 Equivalent & Substitute Parts

Part Overview

The AP1115AY30G-13 is a linear voltage regulator IC from Diodes Incorporated, designed to deliver a fixed 3V output at 600mA in a surface-mount SOT-89-3 package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The regulator features integrated over-current and over-temperature protection, suitable for applications requiring stable 3V power delivery with moderate current demands.

Substiute Parts

AP1115AY30G-13

Diodes IncorporatedIn Stock: 858AP1115AY30G-13 Datasheet

Current PartRFQ

AP1115BY30L-13

Diodes IncorporatedIn Stock: 1721AP1115BY30L-13 Datasheet

Parametric EquivalentRFQ

MCP1703AT-3002E/MB

Microchip TechnologyIn Stock: 2218MCP1703AT-3002E/MB Datasheet

MFR RecommendedRFQ

RT9161A-30GX

Richtek USA Inc.In Stock: 4522RT9161A-30GX Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AP1115AY30G-13 is determined by the following critical parameters:

• Fixed output voltage of 3V
• Surface-mount SOT-89-3 package compatibility
• Positive output configuration
• Over-current and over-temperature protection
• Operating temperature range support

Substitute parts are grouped into two categories:

Parametric Equivalent: AP1115BY30L-13 maintains identical electrical specifications and package format, differing only in packaging method (Cut Tape vs. standard packaging).

Manufacturer-Recommended Alternatives: MCP1703AT-3002E/MB and RT9161A-30GX provide functional equivalence with variations in output current capacity, input voltage limits, and quiescent current characteristics. These alternatives are active products with current manufacturing support.

Parameter Comparison

Engineering Selection Recommendations

AP1115BY30L-13 is the direct parametric equivalent and preferred first choice for AP1115AY30G-13 replacement. It maintains identical electrical performance and package specifications. The only distinction is packaging format (Cut Tape). Both parts are obsolete, but AP1115BY30L-13 has higher inventory availability (1700 pcs vs. 843 pcs).

MCP1703AT-3002E/MB is suitable for applications where output current requirements do not exceed 250mA. This Microchip Technology device offers superior quiescent current performance (5 µA vs. 10 mA) and extended operating temperature range (-40°C to 125°C). It includes short-circuit protection and carries active product status with ongoing manufacturing support. Input voltage maximum is 16V, which is acceptable for most 3V regulator applications.

RT9161A-30GX from Richtek USA Inc. provides 500mA output current capacity, bridging the gap between the MCP1703 (250mA) and the original AP1115 (600mA). This device supports input voltages up to 12V and maintains active product status. It is suitable for applications requiring higher current than the MCP1703 but with input voltage constraints below 12V.

Selection should prioritize active products (MCP1703AT-3002E/MB or RT9161A-30GX) for new designs and long-term production continuity. For legacy system maintenance requiring exact electrical equivalence, AP1115BY30L-13 remains the appropriate choice.

Frequently Asked Questions (FAQ)

Q: Can AP1115BY30L-13 be used as a direct replacement for AP1115AY30G-13?

A: Yes. AP1115BY30L-13 is a parametric equivalent with identical output voltage (3V), output current (600mA), dropout voltage (1.3V @ 600mA), and package format (SOT-89-3). The only difference is packaging method (Cut Tape). Both parts are obsolete, but AP1115BY30L-13 has higher inventory availability.

Q: What are the current limitations when using MCP1703AT-3002E/MB?

A: MCP1703AT-3002E/MB is rated for 250mA maximum output current, compared to 600mA for the AP1115AY30G-13. Applications requiring current above 250mA must use either AP1115BY30L-13 or RT9161A-30GX. The MCP1703 is suitable for low-to-moderate current applications and offers superior quiescent current performance.

Q: What is the input voltage constraint for RT9161A-30GX?

A: RT9161A-30GX supports maximum input voltage of 12V, compared to 18V for the AP1115AY30G-13. Applications with input voltages exceeding 12V must use AP1115BY30L-13 or MCP1703AT-3002E/MB. The RT9161A is suitable for systems with input voltage limited to 12V or below.

Q: Are all substitute parts available in SOT-89-3 package?

A: Yes. All substitute parts listed (AP1115BY30L-13, MCP1703AT-3002E/MB, and RT9161A-30GX) are available in TO-243AA (SOT-89-3) surface-mount package, ensuring PCB layout compatibility with the original AP1115AY30G-13.

Q: Which substitute part offers the best long-term availability?

A: MCP1703AT-3002E/MB and RT9161A-30GX both carry active product status with ongoing manufacturing support. For new designs and production continuity, these active parts are preferred over obsolete alternatives. MCP1703AT-3002E/MB has the highest current inventory (2170 pcs) and is recommended for applications within its 250mA current rating.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All substitute parts (AP1115BY30L-13, MCP1703AT-3002E/MB, and RT9161A-30GX) are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance equivalent to the original AP1115AY30G-13.