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PQ1X331M2ZP
Sharp Microelectronics
IC REG LINEAR 3.3V 150MA SOT23-5
8495 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 150mA SOT-23-5
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5.0 / 5.0
- (411 Ratings)
PQ1X331M2ZP
Product Overview
7924358
DiGi Electronics Part Number
PQ1X331M2ZP-DGManufacturer
Sharp Microelectronics
PQ1X331M2ZP
Description
IC REG LINEAR 3.3V 150MA SOT23-5Inventory
8495 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 150mA SOT-23-5
Quantity
Minimum 1
Minimum 1
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PQ1X331M2ZP Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Packaging
-
Series
-
Product Status
Obsolete
Output Configuration
Positive
Output Type
Fixed
Number of Regulators
1
Voltage - Input (Max)
9V
Voltage - Output (Min/Fixed)
3.3V
Voltage - Output (Max)
-
Voltage Dropout (Max)
0.4V @ 150mA
Current - Output
150mA
Current - Quiescent (Iq)
200 µA
PSRR
70dB (400Hz)
Control Features
Enable
Protection Features
Over Current, Over Temperature
Operating Temperature
-30°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
SC-74A, SOT-753
Supplier Device Package
SOT-23-5
Base Product Number
PQ1X
Datasheet & Documents
HTML Datasheet
PQ1X331M2ZP-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
425-1714-1
425-1714-2
Standard Package
3,000
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
Always impressed by how quickly DiGi Electronics meets my urgent demands.
December 02, 2025
Their prices are fair, making tech upgrades easier than ever.
December 02, 2025
I appreciated the clear return policy accessible on all product pages.
December 02, 2025
DiGi Electronics' customer-first approach makes them a trusted partner.
December 02, 2025
Fast, friendly, and professional—DiGi Electronics always delivers.
December 02, 2025
The delivery was neatly timed, and the shipping updates were detailed enough to alert me when the package was nearby.
December 02, 2025
Customer service representatives are always courteous and eager to help.
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Frequently Asked Questions (FAQ)
Can the PQ1X331M2ZP be safely replaced with the LP2985IM5-3.3/NOPB in a battery-powered IoT device requiring low quiescent current and tight SOT-23-5 footprint compatibility?
While both the PQ1X331M2ZP and LP2985IM5-3.3/NOPB are fixed 3.3V linear regulators in SOT-23-5 packages with enable pins, direct replacement carries risk due to key differences: the PQ1X331M2ZP has a higher quiescent current (200 µA vs. ~75 µA for the LP2985), which may significantly impact battery life in always-on applications. Additionally, the LP2985 requires a minimum output capacitance of 2.2 µF with low ESR (ideally ceramic), whereas the PQ1X331M2ZP is less sensitive to capacitor selection. Verify your existing output capacitor meets the LP2985’s stability requirements before substitution, and reassess total system power budget—especially if sleep-mode efficiency is critical.
What are the thermal and reliability risks of operating the PQ1X331M2ZP near its 150mA load limit with a 9V input in an enclosed industrial sensor module?
Operating the PQ1X331M2ZP at 150mA with a 9V input results in a power dissipation of (9V – 3.3V) × 0.15A = 0.855W. In an SOT-23-5 package with typical θJA of ~220°C/W, this can cause junction temperatures to exceed 200°C under ambient conditions above 25°C—far beyond its 85°C operating limit. This creates high risk of thermal shutdown or long-term reliability degradation. To mitigate, either reduce input voltage using a pre-regulator, derate the load current below 100mA, or improve PCB thermal design with copper pours and vias. Consider switching to a more efficient buck converter if high Vin-Vout differentials are unavoidable.
Is the PQ1X331M2ZP suitable for use in automotive 12V systems after a pre-regulator stage, given its 9V absolute maximum input and lack of AEC-Q100 qualification?
No—the PQ1X331M2ZP is not recommended for automotive applications, even with a pre-regulator. Its maximum input voltage is 9V, so any transient spikes above this (common in 12V automotive environments, even after regulation) can damage the device. Furthermore, it lacks AEC-Q100 qualification, meaning it hasn’t been tested for automotive-grade temperature cycling, humidity, or vibration stress. For automotive use, select an AEC-Q100-compliant alternative like the LP2985IM5-3.3/NOPB (which supports up to 16V input) or a dedicated automotive LDO such as the TPS7B6933-Q1, ensuring both voltage headroom and reliability under harsh conditions.
How does the enable pin behavior of the PQ1X331M2ZP affect power sequencing in a multi-rail embedded system, and what precautions are needed when driving it from a 5V microcontroller?
The PQ1X331M2ZP’s enable pin is active-high and accepts input voltages up to VIN + 0.3V, meaning a 5V logic signal from an MCU is acceptable even when VIN is as low as 3.6V. However, during power-up, if the MCU becomes active before the regulator’s input rail is stable, unintended enable states may cause partial or erratic regulator activation. To prevent this, ensure proper power sequencing via supervisor ICs or RC delays, and consider adding a pull-down resistor (10kΩ) on the EN pin to guarantee a known off-state during boot. Also verify that the enable threshold (~1.2V typical) is compatible with your MCU’s logic high level under all voltage conditions.
Given that the PQ1X331M2ZP is obsolete and RoHS non-compliant, what are the long-term sourcing and compliance risks for a medical device design currently in production?
Using the obsolete, RoHS non-compliant PQ1X331M2ZP in a medical device poses significant long-term risks: component availability will decline, increasing cost and lead times; future production runs may violate evolving environmental regulations (e.g., EU RoHS); and lack of manufacturer support limits failure analysis or reliability data access. Immediate action is recommended: qualify a drop-in RoHS-compliant substitute like the LP2985-33DBVR (which matches SOT-23-5 pinout and electrical performance) and initiate a controlled redesign or last-time buy strategy. Document the change through formal ECO processes and validate EMI, thermal, and transient response to ensure no functional regression in the medical application.
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.
PQ1X331M2ZP CAD Models
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