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

Part Overview

The MP2018GZD-33-P is an active linear voltage regulator IC from Monolithic Power Systems Inc., classified as a Power Management (PMIC) device. This positive fixed output regulator delivers 500mA at 3.3V and is housed in a TO-252-5 surface mount package. The device is currently in active production status with 915 units in stock. Alternative part numbers exist within the same product family to support supply chain flexibility and inventory management across different distribution channels and manufacturing batches.

Substiute Parts

MP2018GZD-33-P

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

Current PartRFQ

MP2018GZD-33-Z

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

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The MP2018GZD-33-P has one parametric equivalent substitute: MP2018GZD-33-Z. Both parts are manufactured by Monolithic Power Systems Inc. and share identical electrical and mechanical specifications. The substitution is valid based on the following critical parameters that determine functional equivalence:

• Output voltage: 3.3V fixed
• Output current capability: 500mA
• Input voltage rating: 16V maximum
• Voltage dropout: 1.3V @ 500mA
• Package: TO-252-5 (DPAK, 5 leads + tab)
• Operating temperature range: -40°C to 125°C
• Protection features: Over Current, Over Temperature, Short Circuit
• Control features: Power Good output
• Quiescent current: 17 µA
• PSRR: 57dB ~ 51dB (100Hz ~ 100kHz)

The difference between these part numbers reflects manufacturing batch designation or distribution channel coding and does not affect electrical performance or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both MP2018GZD-33-P and MP2018GZD-33-Z are active production devices from Monolithic Power Systems Inc. with identical electrical specifications and mechanical packaging. Selection between these parts may be based on:

• Inventory availability: MP2018GZD-33-P has 915 units in stock; MP2018GZD-33-Z has 1052 units in stock
• Supply chain source or distribution channel requirements
• Manufacturing batch or date code requirements for traceability

Both parts carry ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications. The TO-252-5 package is standard for surface mount assembly processes. Moisture sensitivity level 3 requires storage conditions of 168 hours maximum at 60% relative humidity and 30°C before reflow soldering.

Frequently Asked Questions (FAQ)

Q: Can MP2018GZD-33-Z be used as a direct replacement for MP2018GZD-33-P in existing designs?

A: Yes. Both parts are electrically and mechanically identical. They share the same output voltage (3.3V), output current (500mA), package type (TO-252-5), and all protection and control features. No circuit modifications are required.

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

A: The suffix designations reflect manufacturing batch or distribution channel coding assigned by Monolithic Power Systems Inc. These designations do not indicate functional or performance differences.

Q: Are there any package compatibility considerations when substituting between these parts?

A: No. Both parts use the TO-252-5 (DPAK) package with identical pinout and lead configuration. PCB footprints and assembly processes remain unchanged.

Q: Do both parts meet the same compliance and regulatory standards?

A: Yes. Both MP2018GZD-33-P and MP2018GZD-33-Z are ROHS3 compliant and REACH unaffected. Both carry the same moisture sensitivity level (MSL 3) and operating temperature range (-40°C to 125°C).

Q: Which part should be selected based on availability?

A: Selection should be based on current inventory levels and supply chain requirements. MP2018GZD-33-Z currently has higher stock availability (1052 units vs. 915 units). Both parts are active production items with equivalent lead times.

Q: Are there any thermal or performance differences between these parts?

A: No. Both parts have identical thermal characteristics, quiescent current (17 µA), voltage dropout (1.3V @ 500mA), and PSRR specifications (57dB ~ 51dB across 100Hz to 100kHz).