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PQ1K503M2ZP
Sharp Microelectronics
IC REG LINEAR 5V 300MA SOT23L-6
3559 Pcs New Original In Stock
Switching Regulator IC Output
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(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (139 Ratings)
PQ1K503M2ZP
Product Overview
5824935
DiGi Electronics Part Number
PQ1K503M2ZP-DGManufacturer
Sharp Microelectronics
PQ1K503M2ZP
Description
IC REG LINEAR 5V 300MA SOT23L-6Inventory
3559 Pcs New Original In Stock
Switching Regulator IC Output
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
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365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
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PQ1K503M2ZP Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - DC DC Switching Regulators
Packaging
Cut Tape (CT)
Series
*
Product Status
Obsolete
Base Product Number
PQ1K503
Datasheet & Documents
HTML Datasheet
PQ1K503M2ZP-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
425-1650-1
425-1650-2
425-PQ1K503M2ZPTR
Standard Package
5,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
DiGi Electronics의 물류 시스템은 매우 신속하고 정확해서 주문 후 바로 제품을 받아볼 수 있었습니다. 덕분에 프로젝트 일정에 차질이 없었어요.
December 02, 2025
アフターサービスが充実していて、安心して購入できます。
December 02, 2025
Strong, secure packaging kept everything in place during transit.
December 02, 2025
DiGi Electronics provides outstanding after-sales support that truly exceeds expectations.
December 02, 2025
Customer care was attentive and ensured my satisfaction post-purchase.
December 02, 2025
They handle post-sale issues swiftly, reinforcing our confidence in their brand.
December 02, 2025
Shipping delays are rare, and when they happen, DiGi Electronics proactively informs us and offers solutions.
December 02, 2025
Thank you, Di Digi Electronics, for constantly providing top-tier products and service.
December 02, 2025
The after-sales team actively follows up, ensuring complete satisfaction.
December 02, 2025
Cost-effective shopping experience; definitely recommend.
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Frequently Asked Questions (FAQ)
Can I still use the PQ1K503M2ZP in a new design given that it's marked as obsolete by Sharp Microelectronics?
While the PQ1K503M2ZP is listed as obsolete, it may still be sourced from inventory (3,465 pcs available as cut tape), making it feasible for low-volume or legacy designs. However, using it in a new design carries significant supply chain risk due to unavailability after current stock depletion. For long-term production, consider redesigning with a pin-compatible or functionally equivalent linear regulator such as the TPS7A05 from Texas Instruments or the MCP1700 from Microchip. Always verify footprint compatibility and performance specifications under your load and thermal conditions when substituting the PQ1K503M2ZP.
What are the risks of using the PQ1K503M2ZP in a high-temperature industrial application?
The PQ1K503M2ZP is a linear regulator with a maximum output current of 300mA and no internal thermal shutdown protection specified in public datasheets—this increases risk in industrial environments where ambient temperatures exceed 70°C. At full load, power dissipation (VIN - VOUT) × ILOAD could lead to thermal runaway, especially in the SOT23L-6 package with limited PCB heat dissipation. To mitigate risk, ensure VIN is kept as close to 5V as possible, use generous copper pours for thermal management, and validate performance under worst-case conditions before deploying the PQ1K503M2ZP in industrial systems.
Is the PQ1K503M2ZP RoHS-compliant, and what are the implications for modern PCB assembly and compliance?
The PQ1K503M2ZP is RoHS non-compliant, meaning it contains restricted substances such as lead above permitted levels. Using this component in new designs may violate EU RoHS, China RoHS, or other environmental regulations, potentially blocking market access. For PCB assembly, leaded components like the PQ1K503M2ZP require separate soldering processes if mixed with RoHS-compliant parts, increasing manufacturing complexity. Consider replacing it with a RoHS-compliant 5V low-dropout regulator like the NCP1117ST50T3G or the AP2112K-5.0 for alignment with global standards.
How does the SOT23L-6 package of the PQ1K503M2ZP affect PCB layout and thermal performance compared to standard SOT-23?
The SOT23L-6 (also known as SOT-457) package used by the PQ1K503M2ZP is a leaded, low-profile 6-pin variant with tighter pin spacing than standard SOT-23, requiring careful PCB layout to avoid solder bridging and ensure reliable reflow. Its smaller size limits thermal performance compared to larger packages like SOT-223 or DFN types. To maintain reliability with the PQ1K503M2ZP, use thermal vias under the ground pad (if applicable), avoid dense routing near pins, and simulate thermal performance under load. Insufficient copper area may lead to early failure due to overheating.
What are suitable pin-to-pin replacements for the PQ1K503M2ZP when redesigning due to obsolescence?
Direct pin-to-pin replacements for the PQ1K503M2ZP are limited due to its specific SOT23L-6 footprint and 5V fixed output. However, viable alternatives include the TPS7A0550DBVR from Texas Instruments or the XC6206P502MR from Torex Semiconductor—both available in comparable 6-pin SOT-23 packages. When replacing the PQ1K503M2ZP, verify enable logic, dropout voltage (<200mV typical), and load regulation. Consider adding input capacitance (≥1μF) and output ceramic capacitors if the replacement differs in stability requirements to avoid oscillation and ensure reliability.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
PQ1K503M2ZP CAD Models
Sharp Microelectronics PQ1K503M2ZP PCB symbols & footprints
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