MPQ8903DJ-3.3-LF-Z Equivalent & Substitute Parts

Part Overview

The MPQ8903DJ-3.3-LF-Z is a linear voltage regulator IC manufactured by Monolithic Power Systems Inc., classified as a Power Management (PMIC) component. This device delivers a fixed 3.3V output at 150mA in a compact TSOT-23-5 surface mount package. The part is currently in active production status with 39,300 units available in inventory.

Substitute parts are identified when component availability becomes constrained, supply chain disruptions occur, or procurement lead times extend beyond project requirements. Alternative models within the same electrical and mechanical parameter set ensure design continuity without circuit redesign.

Substiute Parts

MPQ8903DJ-3.3-LF-Z

Monolithic Power Systems Inc.In Stock: 39323MPQ8903DJ-3.3-LF-Z Datasheet

Current PartRFQ

MPQ8903DJ-3.3-LF-P

Monolithic Power Systems Inc.In Stock: 960MPQ8903DJ-3.3-LF-P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The MPQ8903DJ-3.3-LF-P qualifies as a parametric equivalent to the MPQ8903DJ-3.3-LF-Z based on identical electrical and mechanical specifications. Substitution eligibility is determined by the following critical parameters:

Output voltage specification (3.3V fixed), output current rating (150mA), maximum input voltage (6.5V), package type (SOT-23-5 Thin), surface mount configuration, positive output polarity, enable control feature, over-temperature protection, operating temperature range (-40°C to 125°C), PSRR performance (50dB ~ 20dB across 1kHz to 1MHz), RoHS3 compliance, and MSL rating (1 - Unlimited).

Both parts share the same base product number (MPQ8903) and are manufactured by Monolithic Power Systems Inc. The only distinction is the packaging format designation suffix, which does not affect electrical performance or circuit compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the MPQ8903DJ-3.3-LF-Z and MPQ8903DJ-3.3-LF-P are active production components with full RoHS3 compliance and REACH unaffected status. Selection between these parts should be based on procurement availability and supply chain requirements. The MPQ8903DJ-3.3-LF-Z maintains higher inventory levels (39,300 units), while the MPQ8903DJ-3.3-LF-P offers an alternative source with lower stock (865 units). Both parts meet identical electrical specifications and are suitable for direct substitution in 3.3V linear regulation applications requiring 150mA output current in space-constrained surface mount designs.

Frequently Asked Questions (FAQ)

Q: Can MPQ8903DJ-3.3-LF-P be used as a direct replacement for MPQ8903DJ-3.3-LF-Z?

A: Yes. Both parts are parametric equivalents with identical electrical characteristics, output voltage, current rating, package type, and operating specifications. No circuit modifications are required for substitution.

Q: What is the difference between the -LF-Z and -LF-P suffix designations?

A: The suffix designations indicate packaging format differences (Tape & Reel variants). Both maintain identical electrical performance and SOT-23-5 Thin package specifications.

Q: Are both parts suitable for the same PCB footprint?

A: Yes. Both parts use the SOT-23-5 Thin (TSOT-23-5) package type with identical pin configuration and mounting requirements for surface mount assembly.

Q: Do both parts meet the same compliance standards?

A: Yes. Both MPQ8903DJ-3.3-LF-Z and MPQ8903DJ-3.3-LF-P are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (Unlimited moisture sensitivity level).

Q: What is the PSRR performance specification for these regulators?

A: Both parts deliver 50dB power supply rejection ratio at 1kHz, decreasing to 20dB at 1MHz across the specified frequency range.