PAM3101AAA475 Equivalent & Substitute Parts

Part Overview

The PAM3101AAA475 is a linear voltage regulator IC from Diodes Incorporated designed for positive fixed output applications. This device delivers 300mA output current with a fixed 4.75V output in a compact SOT-23-3 surface mount package. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

PAM3101AAA475

Diodes IncorporatedIn Stock: 24064PAM3101AAA475 Datasheet

Current PartRFQ

AP2127N-4.75TRG1

Diodes IncorporatedIn Stock: 883AP2127N-4.75TRG1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PAM3101AAA475 is determined by the following critical parameters:

• Fixed output voltage of 4.75V
• Maximum output current of 300mA
• Maximum input voltage of 5.5V or higher
• Dropout voltage characteristics suitable for the application
• Identical package format: SOT-23-3
• Positive output configuration
• Operating temperature range: -40°C to 85°C
• Protection features: Over Current, Over Temperature, Short Circuit

The AP2127N-4.75TRG1 qualifies as a direct substitute based on matching these core electrical and mechanical specifications while maintaining active product status and full regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The AP2127N-4.75TRG1 is the manufacturer-recommended substitute for the obsolete PAM3101AAA475. Both devices are manufactured by Diodes Incorporated and maintain identical ROHS3 compliance, REACH unaffected status, and MSL rating of 1 (Unlimited). The substitute part carries active product status, ensuring long-term availability and supply chain continuity.

The AP2127N-4.75TRG1 features a marginally higher maximum input voltage specification (6V versus 5.5V) and slightly increased dropout voltage (0.3V versus 0.23V at 300mA), both of which represent acceptable operational variations within typical application tolerances. All critical electrical parameters—output voltage, output current, quiescent current, protection features, and operating temperature range—remain identical between the two devices.

Frequently Asked Questions (FAQ)

Q: Can the AP2127N-4.75TRG1 be used as a direct replacement for the PAM3101AAA475?

A: Yes. Both devices share identical output voltage (4.75V), output current (300mA), package format (SOT-23-3), and protection feature sets. The substitute part is the manufacturer-recommended alternative.

Q: What are the differences between these two regulators?

A: The AP2127N-4.75TRG1 has a maximum input voltage of 6V compared to 5.5V for the PAM3101AAA475, and a dropout voltage of 0.3V versus 0.23V at 300mA. The substitute part also maintains active product status, whereas the original is obsolete.

Q: Are the package dimensions identical?

A: Both devices use the SOT-23-3 package format (also designated TO-236-3 or SC-59). Physical dimensions and pin configurations are identical, enabling direct PCB footprint compatibility.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the PAM3101AAA475 and AP2127N-4.75TRG1 are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (Unlimited).

Q: What is the quiescent current for both devices?

A: Both regulators draw 90 µA quiescent current, providing identical standby power consumption characteristics.

Q: Are there any control feature differences?

A: The PAM3101AAA475 includes an Enable control feature. The AP2127N-4.75TRG1 does not list this feature in the provided specifications. Verify control requirements for your specific application.