PQ1X251M2ZP Equivalent & Substitute Parts

Part Overview

The PQ1X251M2ZP is a linear voltage regulator IC manufactured by Sharp Microelectronics, designed to deliver a fixed 2.5V output at 150mA in a compact SOT-23-5 surface mount package. This component is classified as a Power Management IC (PMIC) and is currently listed as obsolete. Due to its discontinued status, identifying functionally equivalent active alternatives is essential for design continuity, production planning, and system reliability in applications requiring this specific voltage regulation capability.

Substiute Parts

PQ1X251M2ZP

Sharp MicroelectronicsIn Stock: 5438PQ1X251M2ZP Datasheet

Current PartRFQ

LP2985-25DBVR

Texas InstrumentsIn Stock: 25512LP2985-25DBVR Datasheet

SimilarRFQ

LP2985-25DBVT

Texas InstrumentsIn Stock: 6687LP2985-25DBVT Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the PQ1X251M2ZP is determined by strict alignment of the following critical parameters:

• Output voltage specification: 2.5V fixed output
• Output current capability: 150mA minimum
• Package type: SOT-23-5 (SC-74A, SOT-753)
• Mounting type: Surface mount
• Regulatory compliance: ROHS3 and EAR99 classification

The identified substitute parts—LP2985-25DBVR and LP2985-25DBVT—meet all these criteria. Both are Texas Instruments linear voltage regulators with identical electrical specifications and package configurations. The primary distinction between these substitutes is packaging format: LP2985-25DBVR is supplied in Cut Tape & Digi-Reel format, while LP2985-25DBVT is supplied in Tape & Reel format. Both parts are currently in active production status, ensuring long-term availability and supply chain stability.

Parameter Comparison

Engineering Selection Recommendations

Both LP2985-25DBVR and LP2985-25DBVT are direct functional equivalents for the obsolete PQ1X251M2ZP. Selection between these two substitutes should be based on procurement and assembly requirements:

• LP2985-25DBVR: Suitable for applications requiring flexibility in packaging format, available in both Cut Tape and Digi-Reel configurations. Inventory availability is 25,442 units.

• LP2985-25DBVT: Optimized for high-volume production environments utilizing automated tape and reel handling systems. Inventory availability is 6,600 units.

Both parts carry active product status from Texas Instruments, ensuring continued manufacturing support, technical documentation availability, and supply chain reliability. Both comply with ROHS3 regulations and carry EAR99 export classification, matching the compliance profile of the original component. The electrical specifications of the LP2985 series exceed the documented parameters of the PQ1X251M2ZP, providing enhanced performance characteristics including defined dropout voltage, quiescent current specifications, and comprehensive protection features.

Frequently Asked Questions (FAQ)

Q: Can LP2985-25DBVR and LP2985-25DBVT be used interchangeably in the same application?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format—one uses Cut Tape & Digi-Reel, the other uses Tape & Reel. Selection depends on your assembly process and procurement workflow, not on circuit performance.

Q: What is the key difference between Cut Tape (CT) & Digi-Reel and Tape & Reel (TR) packaging?

A: Cut Tape & Digi-Reel format provides flexibility for both manual and automated assembly, with components supplied on tape that can be cut as needed. Tape & Reel format is optimized for high-speed automated pick-and-place assembly equipment. Choose based on your manufacturing capability.

Q: Are the LP2985 substitutes pin-compatible with the PQ1X251M2ZP?

A: Yes. All three parts use the SOT-23-5 package (also designated SC-74A or SOT-753), ensuring identical pinout and PCB footprint compatibility. No circuit board redesign is required.

Q: Why is the PQ1X251M2ZP listed as obsolete?

A: Sharp Microelectronics has discontinued this product line. The LP2985 series from Texas Instruments provides superior active product status with guaranteed long-term availability and manufacturing support.

Q: Do the LP2985 substitutes provide better performance than the original PQ1X251M2ZP?

A: The LP2985 series offers documented electrical specifications including defined dropout voltage (0.58V @ 150mA), quiescent current (95 µA), and comprehensive protection features (over-current, over-temperature, short-circuit). These specifications ensure predictable performance across the operating temperature range of -40°C to 125°C.

Q: Are there any compliance or certification differences between the original and substitute parts?

A: No. Both the original PQ1X251M2ZP and the LP2985 substitutes share identical Moisture Sensitivity Level (MSL 1), ECCN classification (EAR99), and HTSUS code (8542.39.0001). The LP2985 series additionally carries ROHS3 compliance certification.