AP2114S-3.3G1 Equivalent & Substitute Parts

Part Overview

The AP2114S-3.3G1 is a linear voltage regulator IC manufactured by Diodes Incorporated, designed to deliver a fixed 3.3V output at 1A maximum current in a TO-263-3 surface mount package. This device functions as a positive fixed output regulator with integrated over-current, over-temperature, and short-circuit protection, along with an enable control feature.

The AP2114S-3.3G1 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this regulator.

Substiute Parts

AP2114S-3.3G1

Diodes IncorporatedIn Stock: 1142AP2114S-3.3G1 Datasheet

Current PartRFQ

MCP1826ST-3302E/EB

Microchip TechnologyIn Stock: 1302MCP1826ST-3302E/EB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AP2114S-3.3G1 is determined by the following critical electrical and mechanical parameters:

• Output Voltage: Must be fixed at 3.3V
• Output Current Rating: Must support 1A minimum
• Input Voltage Range: Must accommodate up to 6V input
• Package Compatibility: Must be surface mount with compatible pinout and thermal characteristics
• Regulatory Compliance: Must maintain ROHS3 compliance status
• Output Configuration: Must be positive fixed output with single regulator

The MCP1826ST-3302E/EB from Microchip Technology meets all substitution criteria. Both devices deliver identical output voltage and current specifications, operate within compatible input voltage ranges, and maintain equivalent regulatory compliance. Package differences (TO-263-3 versus TO-263-4) represent a mechanical variation that requires PCB layout verification but does not affect electrical substitutability.

Parameter Comparison

Engineering Selection Recommendations

The MCP1826ST-3302E/EB is the qualified substitute for the AP2114S-3.3G1 based on the following engineering criteria:

Electrical Equivalence: Both regulators deliver 3.3V fixed output at 1A maximum current with identical input voltage specifications. The MCP1826ST-3302E/EB exhibits superior dropout voltage performance (0.4V versus 0.75V), which may reduce thermal dissipation in power-limited applications.

Regulatory Compliance: Both devices maintain ROHS3 compliance, ensuring compatibility with current environmental and manufacturing standards.

Product Availability: The MCP1826ST-3302E/EB holds active product status with confirmed inventory availability, whereas the AP2114S-3.3G1 is obsolete. This substitution ensures long-term supply chain continuity.

Operating Temperature: The MCP1826ST-3302E/EB supports an extended operating range (-40°C to 125°C) compared to the original part (-40°C to 85°C), providing additional thermal margin for demanding applications.

Package Consideration: The TO-263-4 package of the MCP1826ST-3302E/EB contains an additional lead compared to the TO-263-3 of the AP2114S-3.3G1. PCB layout modification is required to accommodate this package variant.

Frequently Asked Questions (FAQ)

Q: Can the MCP1826ST-3302E/EB directly replace the AP2114S-3.3G1 without PCB modification?

A: Electrical substitution is valid. However, the package difference (TO-263-4 versus TO-263-3) requires PCB layout verification. The additional lead on the MCP1826ST-3302E/EB must be accommodated in the footprint design. Direct socket replacement is not possible without layout changes.

Q: What are the key electrical differences between these two regulators?

A: Both devices deliver identical 3.3V output at 1A. The MCP1826ST-3302E/EB provides lower dropout voltage (0.4V versus 0.75V) and extended operating temperature range (-40°C to 125°C versus -40°C to 85°C). The AP2114S-3.3G1 exhibits lower quiescent current (90 µA versus 220 µA) and higher PSRR (65dB versus 60dB).

Q: Are both parts RoHS compliant?

A: Yes. Both the AP2114S-3.3G1 and MCP1826ST-3302E/EB are ROHS3 compliant, meeting current environmental standards.

Q: Why is the AP2114S-3.3G1 obsolete?

A: The AP2114S-3.3G1 is classified as obsolete by the manufacturer. The MCP1826ST-3302E/EB is the active equivalent offering superior performance characteristics and assured long-term availability.

Q: What protection features does the MCP1826ST-3302E/EB provide?

A: The MCP1826ST-3302E/EB includes over-temperature protection, short-circuit protection, and under-voltage lockout (UVLO). The original AP2114S-3.3G1 provides over-current, over-temperature, and short-circuit protection. The addition of UVLO in the substitute part provides enhanced circuit protection.

Q: Is the control feature (Enable pin) available on the MCP1826ST-3302E/EB?

A: The MCP1826ST-3302E/EB does not list an enable control feature in the provided specifications, whereas the AP2114S-3.3G1 includes this function. If enable control is required for your application, this difference must be evaluated during design integration.