PQ1X281M2ZP Equivalent & Substitute Parts

Part Overview

The PQ1X281M2ZP is a linear voltage regulator IC manufactured by Sharp Microelectronics, designed to deliver a fixed 2.8V output at 150mA in a SOT-23-5 surface mount package. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and production requirements. The substitute parts listed maintain electrical and mechanical compatibility while offering improved availability and compliance status.

Substiute Parts

PQ1X281M2ZP

Sharp MicroelectronicsIn Stock: 6444PQ1X281M2ZP Datasheet

Current PartRFQ

LP2985-28DBVR

Texas InstrumentsIn Stock: 29356LP2985-28DBVR Datasheet

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LP2985-28DBVT

Texas InstrumentsIn Stock: 3077LP2985-28DBVT Datasheet

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LP2985IM5-2.8/NOPB

Texas InstrumentsIn Stock: 3455LP2985IM5-2.8/NOPB Datasheet

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LP2985IM5X-2.8/NOPB

Texas InstrumentsIn Stock: 983LP2985IM5X-2.8/NOPB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PQ1X281M2ZP is determined by the following critical parameters:

• Output Voltage: Fixed 2.8V output
• Output Current Capability: 150mA minimum
• Package Configuration: SOT-23-5 (SC-74A, SOT-753)
• Output Type: Positive fixed linear regulator
• Number of Outputs: Single output
• Mounting Technology: Surface mount

All substitute parts listed maintain these core electrical and mechanical specifications. The LP2985 series from Texas Instruments satisfies all substitution criteria through identical output voltage, current rating, package geometry, and functional architecture.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status, RoHS3 Compliant):

• LP2985IM5-2.8/NOPB: Recommended for new designs and production transitions. Active product status ensures long-term availability. ROHS3 compliance meets current regulatory requirements. Inventory of 3400 units supports immediate procurement.

• LP2985IM5X-2.8/NOPB: Functionally equivalent alternative with active status and ROHS3 compliance. Lower inventory (903 units) suitable for lower-volume applications.

• LP2985-28DBVR: Active product status with ROHS3 compliance. Highest inventory availability (29300 units) for high-volume production requirements.

Secondary Substitute (Obsolete Status):

• LP2985-28DBVT: Maintains electrical and mechanical equivalence but carries obsolete product status. ROHS3 compliance provides regulatory advantage over the original PQ1X281M2ZP. Suitable only when active alternatives are unavailable.

All LP2985 variants provide superior compliance posture compared to the non-compliant PQ1X281M2ZP while maintaining identical electrical performance and package compatibility.

Frequently Asked Questions (FAQ)

Q: Can LP2985 series parts directly replace PQ1X281M2ZP without PCB modifications?

A: Yes. All LP2985 variants use identical SOT-23-5 package geometry (SC-74A, SOT-753) with matching pin assignments for linear voltage regulator configurations. Direct footprint compatibility is confirmed.

Q: What is the difference between LP2985-28DBVR, LP2985-28DBVT, LP2985IM5-2.8/NOPB, and LP2985IM5X-2.8/NOPB?

A: All four parts deliver identical electrical specifications: 2.8V fixed output, 150mA current capability, 0.58V maximum dropout voltage, and 95µA quiescent current. Differences exist only in product status and packaging format. LP2985-28DBVR and LP2985-28DBVT are tape and reel packaged variants; LP2985IM5-2.8/NOPB and LP2985IM5X-2.8/NOPB are alternative designations within the same product family. Product status varies: LP2985-28DBVR, LP2985IM5-2.8/NOPB, and LP2985IM5X-2.8/NOPB are active; LP2985-28DBVT is obsolete.

Q: Is RoHS compliance important for this substitution?

A: The original PQ1X281M2ZP is RoHS non-compliant. All LP2985 substitutes are ROHS3 compliant, meeting current environmental and regulatory standards for electronics manufacturing and distribution.

Q: Which substitute should be selected for new product designs?

A: LP2985IM5-2.8/NOPB or LP2985IM5X-2.8/NOPB are recommended for new designs due to active product status, ROHS3 compliance, and confirmed long-term availability from Texas Instruments.

Q: Are there any electrical performance differences between the original and substitute parts?

A: No. Output voltage, output current, dropout voltage, quiescent current, and protection features are identical across all parts. The LP2985 series provides equivalent or superior electrical performance.