MP2018GZD-33-Z Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The MP2018GZD-33-Z is an active linear voltage regulator IC manufactured by Monolithic Power Systems Inc., classified as a Power Management (PMIC) component. This device delivers a fixed positive 3.3V output at 500mA in a surface-mount TO-252-5 package configuration. The part is currently in active production status with 1052 units available in new original inventory.

Linear voltage regulators of this specification are essential in applications requiring stable, low-noise DC power supply conversion from higher input voltages. Substitute parts become necessary when primary inventory is depleted, supply chain disruptions occur, or alternative packaging preferences are required while maintaining identical electrical performance.

Substiute Parts

MP2018GZD-33-Z

Monolithic Power Systems Inc.In Stock: 1065MP2018GZD-33-Z Datasheet

Current PartRFQ

MP2018GZD-33-P

Monolithic Power Systems Inc.In Stock: 969MP2018GZD-33-P Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MP2018GZD-33-Z is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must satisfy the following criteria:

Electrical Parameters (Must Match Exactly):

• Fixed output voltage: 3.3V
• Output current capacity: 500mA
• Maximum input voltage: 16V
• Voltage dropout: 1.3V @ 500mA
• Quiescent current: 17µA
• Supply current maximum: 150µA
• PSRR specification: 57dB ~ 51dB (100Hz ~ 100kHz)
• Operating temperature range: -40°C to 125°C

Mechanical & Packaging Parameters (Must Match Exactly):

• Package type: TO-252-5 (DPAK with 5 Leads + Tab)
• Mounting type: Surface Mount
• Tape & Reel packaging format

Functional Features (Must Match Exactly):

• Output configuration: Positive
• Output type: Fixed
• Number of regulators: 1
• Control features: Power Good
• Protection features: Over Current, Over Temperature, Short Circuit

Compliance & Status (Must Match Exactly):

• Product status: Active
• RoHS3 compliance
• MSL rating: 3 (168 Hours)
• REACH status: Unaffected
• Manufacturer: Monolithic Power Systems Inc.

Only parts meeting all specified criteria are classified as parametric equivalents.

Parameter Comparison

Engineering Selection Recommendations

The MP2018GZD-33-P is a direct parametric equivalent to the MP2018GZD-33-Z. Both parts are manufactured by Monolithic Power Systems Inc. and share identical electrical specifications, mechanical packaging, and functional features. The distinction between these part numbers relates to packaging format within the same TO-252-5 footprint classification.

Selection Basis:

Both parts maintain active production status with current inventory availability. Both comply with ROHS3 environmental standards and carry identical MSL ratings of 3 (168 Hours), indicating equivalent moisture sensitivity handling requirements. The REACH unaffected status and EAR99 export classification are consistent across both variants.

From an engineering perspective, either part satisfies the identical functional requirements in applications requiring a 3.3V, 500mA linear voltage regulator with integrated power good monitoring and comprehensive protection circuitry. The choice between MP2018GZD-33-Z and MP2018GZD-33-P is determined by supply chain availability and procurement preferences rather than technical performance differentiation.

Frequently Asked Questions (FAQ)

Q: Are MP2018GZD-33-Z and MP2018GZD-33-P electrically interchangeable?

A: Yes. Both parts deliver identical electrical performance with 3.3V fixed output, 500mA current capacity, 1.3V maximum dropout voltage, and matching PSRR characteristics across the specified frequency range. All protection and control features are identical.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. Both parts use the identical TO-252-5 (DPAK) surface-mount package with 5 leads plus tab configuration. PCB footprints, solder pad layouts, and thermal characteristics are identical, permitting direct substitution without board redesign.

Q: What is the difference between MP2018GZD-33-Z and MP2018GZD-33-P?

A: The difference is limited to packaging format designation within the same TO-252-5 footprint. Both parts are manufactured by Monolithic Power Systems Inc. and carry identical electrical and mechanical specifications. The suffix variation reflects internal supplier packaging or distribution channel differentiation.

Q: Are both parts RoHS compliant?

A: Yes. Both MP2018GZD-33-Z and MP2018GZD-33-P are ROHS3 compliant and carry identical REACH unaffected status, meeting current environmental regulatory requirements.

Q: What is the MSL rating for these parts?

A: Both parts carry MSL rating 3 with a 168-hour floor life specification. This indicates standard moisture sensitivity handling procedures are required during storage and assembly.

Q: Can I use these regulators in applications with input voltages above 16V?

A: No. The maximum input voltage specification for both parts is 16V. Operation above this voltage exceeds the device rating and may result in component failure or degraded performance.

Q: What is the operating temperature range for these regulators?

A: Both parts operate across -40°C to 125°C ambient temperature range, suitable for industrial and extended commercial applications.

Q: Are these parts suitable for high-noise environments?

A: Both parts provide 57dB PSRR at 100Hz, declining to 51dB at 100kHz. This power supply rejection ratio is typical for linear regulators in this class and provides moderate noise attenuation. Applications requiring superior noise performance may require additional filtering or alternative regulator topologies.