PAM3101AAA180 Equivalent & Substitute Parts

Part Overview

The PAM3101AAA180 is a linear voltage regulator IC from Diodes Incorporated designed for positive fixed 1.8V output applications with 300mA current capacity in a compact SOT-23-3 surface mount package. This part is classified as obsolete, making identification of active equivalent components essential for new designs and ongoing production support. The PAM3101AAA180 provides integrated over-current, over-temperature, and short-circuit protection with an enable control feature, suitable for low-power regulated supply applications requiring fixed 1.8V output.

Substiute Parts

PAM3101AAA180

Diodes IncorporatedIn Stock: 9552PAM3101AAA180 Datasheet

Current PartRFQ

AP2127N-1.8TRG1

Diodes IncorporatedIn Stock: 228144AP2127N-1.8TRG1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PAM3101AAA180 is determined by strict alignment of the following electrical and mechanical parameters:

• Fixed output voltage of 1.8V
• Output current capacity of 300mA minimum
• SOT-23-3 package compatibility
• Surface mount technology
• Operating temperature range of -40°C to 85°C
• Over-current and over-temperature protection
• ROHS3 compliance

The AP2127N-1.8TRG1 qualifies as a direct substitute based on matching all critical parameters. Both devices are manufactured by Diodes Incorporated, share identical output voltage and current specifications, use the same SOT-23-3 package, and operate across the same temperature range with equivalent protection features.

Parameter Comparison

Engineering Selection Recommendations

The AP2127N-1.8TRG1 is the qualified substitute for the obsolete PAM3101AAA180. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for new designs and production transitions.

The AP2127N-1.8TRG1 offers improved performance characteristics: maximum input voltage tolerance increases from 5.5V to 6V, and voltage dropout reduces from 1.1V to 0.7V at 300mA output current. These enhancements provide greater design margin and improved efficiency in regulated supply applications.

The AP2127N-1.8TRG1 carries active product status with significantly higher inventory availability (228,054 pcs vs. 9,476 pcs), supporting both immediate procurement and long-term supply chain continuity. Packaging is supplied as Tape & Reel (TR), standard for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the AP2127N-1.8TRG1 directly replace the PAM3101AAA180 without circuit modification?

A: Yes. Both devices share identical output voltage (1.8V), output current (300mA), SOT-23-3 package, and operating temperature range (-40°C to 85°C). Pin configuration and functional behavior are compatible for direct substitution. The AP2127N-1.8TRG1 provides improved dropout voltage performance without requiring design changes.

Q: What are the key differences between these two parts?

A: The primary differences are product status and performance specifications. The PAM3101AAA180 is obsolete; the AP2127N-1.8TRG1 is active. The AP2127N-1.8TRG1 accepts higher maximum input voltage (6V vs. 5.5V) and exhibits lower dropout voltage (0.7V vs. 1.1V at 300mA). Both maintain equivalent protection features and temperature operating range.

Q: Are there packaging differences between these parts?

A: Both parts use the SOT-23-3 package (TO-236-3, SC-59) for surface mount assembly. The AP2127N-1.8TRG1 is supplied in Tape & Reel (TR) format, standard for high-volume automated production. Package footprint and pin assignment are identical.

Q: Does the AP2127N-1.8TRG1 maintain the same regulatory compliance?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected. Regulatory and environmental compliance requirements are equivalent between the two devices.

Q: Why should I transition from PAM3101AAA180 to AP2127N-1.8TRG1?

A: The PAM3101AAA180 is obsolete, creating supply and long-term availability risk. The AP2127N-1.8TRG1 is an active product with robust inventory support (228,054 pcs available). Transitioning ensures design continuity, improved performance margins through lower dropout voltage, and reliable supply chain access for current and future production.