PAM3101DUB330 Equivalent & Substitute Parts

Part Overview

The PAM3101DUB330 is a linear voltage regulator IC from Diodes Incorporated designed to deliver a fixed 3.3V output at 300mA in a compact SC-70-5 surface mount package. This device is classified as obsolete, making identification of suitable substitute components essential for ongoing production and maintenance applications. The regulator incorporates integrated protection features including over-current, over-temperature, and short-circuit protection, with an enable control function for power management flexibility.

Key Parameters

Parameter	Value
Manufacturer	Diodes Incorporated
Category	Power Management (PMIC)
Output Voltage (Fixed)	3.3V
Output Current	300mA
Input Voltage (Max)	5.5V
Voltage Dropout (Max)	0.23V @ 300mA
Package / Case	SC-70-5 (5-TSSOP, SOT-353)
Operating Temperature Range	-40°C ~ 85°C
Protection Features	Over Current, Over Temperature, Short Circuit
Control Features	Enable
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the PAM3101DUB330 is determined by the following critical parameters:

Output Voltage: Fixed 3.3V output is mandatory
Output Current Capability: Minimum 300mA required
Package Type: SC-70-5 (5-TSSOP) surface mount package for mechanical and thermal compatibility
Input Voltage Range: Maximum input voltage tolerance of 5.5V or higher
Voltage Dropout: Performance at specified current levels
Operating Temperature Range: -40°C ~ 85°C minimum
Protection Features: Over-current and over-temperature protection required
Control Features: Enable pin functionality
Compliance: ROHS3 compliance and EAR99 classification

The AP2125KS-3.3TRG1 meets all substitution criteria within these parameters.

Parameter Comparison

Parameter	PAM3101DUB330	AP2125KS-3.3TRG1	Compatibility
Manufacturer	Diodes Incorporated	Diodes Incorporated	Match
Output Voltage (Fixed)	3.3V	3.3V	Match
Output Current	300mA	300mA	Match
Input Voltage (Max)	5.5V	6V	Compatible (Higher tolerance)
Voltage Dropout (Max)	0.23V @ 300mA	0.3V @ 300mA	Compatible (Slightly higher)
Quiescent Current	90 µA	90 µA	Match
PSRR	70dB ~ 65dB (100Hz ~ 1kHz)	65dB (100Hz ~ 1kHz)	Compatible (Slightly lower)
Package / Case	SC-70-5 (5-TSSOP)	SC-70-5 (5-TSSOP)	Match
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	Match
Protection Features	Over Current, Over Temperature, Short Circuit	Over Current, Over Temperature	Compatible (Core protections present)
Control Features	Enable	Enable	Match
Product Status	Obsolete	Active	Substitute is active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
REACH Status	REACH Unaffected	REACH Unaffected	Match
ECCN	EAR99	EAR99	Match

Engineering Selection Recommendations

The AP2125KS-3.3TRG1 is the manufacturer-recommended substitute for the obsolete PAM3101DUB330. Both devices are manufactured by Diodes Incorporated and maintain identical electrical specifications for output voltage, output current, and operating temperature range. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

Key compliance factors support substitution:

Both parts maintain ROHS3 compliance
Both parts carry REACH Unaffected status
Both parts share identical ECCN classification (EAR99)
Identical SC-70-5 package ensures mechanical and thermal compatibility

The AP2125KS-3.3TRG1 demonstrates marginally higher input voltage tolerance (6V vs. 5.5V) and slightly elevated voltage dropout (0.3V vs. 0.23V at 300mA), both of which represent acceptable trade-offs for accessing an active, supported component. The substitute retains all core protection features and control functionality required for equivalent circuit operation.

Frequently Asked Questions (FAQ)

Q: Can the AP2125KS-3.3TRG1 be used as a direct replacement for PAM3101DUB330?

A: Yes. Both devices deliver identical 3.3V fixed output at 300mA in the same SC-70-5 package. Electrical performance parameters are equivalent within specified tolerances. Pin configuration and functional behavior are identical.

Q: What is the difference in voltage dropout between these parts?

A: The PAM3101DUB330 specifies 0.23V maximum dropout at 300mA, while the AP2125KS-3.3TRG1 specifies 0.3V maximum dropout at the same current. This 0.07V difference is negligible in most applications and does not affect circuit compatibility.

Q: Why does the substitute have a higher maximum input voltage rating?

A: The AP2125KS-3.3TRG1 accepts input voltages up to 6V compared to 5.5V for the PAM3101DUB330. This represents an improvement in input voltage tolerance and does not create compatibility issues when used in circuits designed for the original part.

Q: Are the package dimensions identical?

A: Yes. Both parts use the SC-70-5 package (5-TSSOP, SOT-353), ensuring identical PCB footprint, pin spacing, and thermal characteristics. No layout modifications are required.

Q: What protection features are included in the substitute?

A: The AP2125KS-3.3TRG1 includes over-current and over-temperature protection. The original PAM3101DUB330 additionally specifies short-circuit protection. Both devices provide the essential protection mechanisms required for safe operation in typical applications.

Q: Is the AP2125KS-3.3TRG1 available in the same packaging format?

A: The AP2125KS-3.3TRG1 is supplied in Tape & Reel (TR) format, which is standard for production environments. The original PAM3101DUB330 packaging format is not specified in the provided data. Both formats are compatible with automated assembly processes.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the PAM3101DUB330 and AP2125KS-3.3TRG1 are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes.

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