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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

STMicroelectronics STR1P2UH7

Name: STR1P2UH7
Brand: STMicroelectronics
SKU: STR1P2UH7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STR1P2UH7

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: STR1P2UH7.pdf

Description:: MOSFET P-CH 20V 1.4A SOT-23

Quantity:: RFQ Add To RFQ list

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Inventory:8,273

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Product details

Overview

STR1P2UH7 from STMicroelectronics is a P-channel enhancement-mode Power MOSFET using STripFET™ H7 trench-gate technology, rated for 20 V V_DS, 0.087 Ω R_DS(on) at V_GS = 4.5 V and 0.7 A, with 1.4 A continuous drain current at T_pcb = 25 °C, designed for low-voltage load switching in space-constrained DC-DC converters and battery protection circuits.

For engineers reviewing the STR1P2UH7 datasheet, STR1P2UH7 pinout, STR1P2UH7 application, or STR1P2UH7 equivalent, this page delivers verified electrical ratings, thermal data, gate charge metrics, switching timing, and SOT-23 package layout to support high-frequency, low-loss power stage design and replacement selection.

Technical Context

This device implements a trench-gate P-channel structure optimized for ultra-low R_DS(on) and minimized capacitances (C_iss = 510 pF, C_oss = 66 pF, C_rss = 44 pF), enabling efficient operation up to several MHz in synchronous buck high-side switches and reverse-polarity protection.

Its gate threshold voltage (V_GS(th) = 0.4–1.0 V) ensures reliable turn-on with 1.8–4.5 V logic-level drive, while its 150 °C max junction temperature and 357 °C/W R_thj-pcb define thermal limits on standard FR-4 PCBs without heatsinking.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	20 V - Maximum drain-source blocking voltage for 3.3 V/5 V rail applications
R_DS(on)	0.087 Ω typ. @ V_GS = 4.5 V - Enables <100 mW conduction loss at 1 A
Q_g	4.8 nC - Low gate charge supports fast switching with minimal driver effort
C_iss	510 pF - Reduces Miller effect and improves EMI behavior in high-dv/dt environments
t_d(off)	40 ns typ. - Supports >1 MHz PWM operation in compact DC-DC regulators
I_D cont.	1.4 A @ T_pcb = 25 °C - Suitable for single-cell Li-ion load switches and USB port protection
V_GS(th)	0.4–1.0 V - Ensures full enhancement with 1.8 V I/O microcontrollers

Pinout & Package

The STR1P2UH7 is housed in a standard SOT-23 (TO-236) plastic package with gull-wing leads, compliant with ECOPACK® environmental standards and suitable for reflow soldering on 1-inch² FR-4 boards with 2 oz copper.

Pin/Terminal	Circuit Role	Design Meaning
G (Pin 1)	Gate	Controls channel conduction; referenced to source; requires negative V_GS for turn-on in P-channel topology
S (Pin 2)	Source	Common reference node for gate drive and current return path; tied to higher potential in high-side switch configuration
D (Pin 3)	Drain	Current output terminal; connected to load or input rail; handles bidirectional avalanche energy up to 150 °C

Key Features

Feature	Design Value
Ultra-low R_DS(on)	0.087 Ω typ. at 4.5 V enables <100 mW conduction loss at 1 A in portable systems
Low gate charge	4.8 nC total gate charge reduces switching losses and driver power demand
High avalanche ruggedness	Rated for repetitive unclamped inductive switching per SOA curve up to 150 °C junction
Logic-level compatible	V_GS(th) as low as 0.4 V ensures robust turn-on with 1.8 V/2.5 V/3.3 V microcontroller outputs

Applications

Battery Protection Circuit

USB Port Reverse Polarity Protection

Use Scenario: Prevents damage from incorrect battery insertion in single-cell Li-ion packs.

IC Role / Device Role / Timing Role: P-channel high-side switch controlling battery-to-system power path; activated by MCU GPIO.

Use Value: 0.087 Ω R_DS(on) limits voltage drop to <87 mV at 1 A, preserving runtime and thermal margin.

Use Scenario: Blocks reverse current flow when external 5 V supply is connected to USB VBUS while system is off.

IC Role / Device Role / Timing Role: Reverse-polarity protection FET placed between VBUS and downstream LDO input.

Use Value: 1.4 A rating and 20 V V_DS withstand capability ensure safe operation across USB 2.0/3.0 hot-plug events.

Load Switch in Wearable Electronics

High-Side Switch in Compact DC-DC Converter

Use Scenario: Enables/disables power to BLE radio or sensor subsystem to reduce standby current.

IC Role / Device Role / Timing Role: Low-quiescent-load P-channel switch controlled by PMIC enable signal.

Use Value: 1 µA IDSS and 10 nA IGSS minimize leakage-induced battery drain over weeks of storage.

Use Scenario: Synchronous rectifier or high-side switch in 3.3 V → 1.2 V buck converter for FPGA core rails.

IC Role / Device Role / Timing Role: High-frequency switching element operating at 2 MHz with minimal Q_g-driven losses.

Use Value: 4.8 nC Q_g and 510 pF C_iss allow clean 20 ns rise/fall transitions under 4.7 Ω gate resistance.

Equivalent & Alternatives

The following parts are listed as comparable options for similar P-channel load switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMG1012T	R_DS(on) = 0.11 Ω @ 4.5 V; Q_g = 5.2 nC; SOT-23 package	Higher conduction loss and slightly slower switching than STR1P2UH7	Acceptable where <5% efficiency penalty is tolerable and footprint compatibility is required
AO3401	R_DS(on) = 0.085 Ω @ 4.5 V; Q_g = 5.5 nC; C_iss = 620 pF	Lower R_DS(on) but higher capacitance increases switching loss above 1 MHz	Preferred for lower-loss DC operation; less optimal for >1.5 MHz high-frequency designs

Compared with DMG1012T and AO3401, the STR1P2UH7 offers the best balance of low R_DS(on), minimal Q_g, and ultra-low C_iss, making it optimal for high-efficiency, high-frequency load switching where thermal headroom and EMI control are critical.

Availability

STR1P2UH7 is available at Aetrix Electronics and suitable for battery protection circuits, USB reverse polarity protection, wearable electronics load switching, and compact DC-DC converter high-side switches requiring stable component supply and long-term industrial availability.

Supply support for STR1P2UH7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

The STR1P2UH7 belongs to ST's STripFET™ H7 Power MOSFET product line, engineered specifically for high-efficiency, low-voltage power management in space-constrained portable and battery-powered systems.

FAQ

What is the maximum continuous drain current for STR1P2UH7 at 100 °C PCB temperature?

The STR1P2UH7 supports 0.9 A continuous drain current when mounted on a 1-inch² FR-4 board with 2 oz copper at T_pcb = 100 °C, as specified in Table 2 of the datasheet. This derating reflects thermal resistance of 357 °C/W and ensures safe operation within the 150 °C maximum junction temperature limit.

Does STR1P2UH7 include an integrated body diode, and what are its recovery characteristics?

Yes, STR1P2UH7 features an inherent source-drain body diode with V_SD = 1 V max at 1 A and fast reverse recovery: t_rr = 12.5 ns and Q_rr = 5 nC at T_j = 150 °C. These values are measured under standardized inductive-switching conditions and support efficient synchronous rectification in buck topologies.

Can STR1P2UH7 be driven directly by a 1.8 V GPIO without level shifting?

Yes - with a V_GS(th) range of 0.4–1.0 V and guaranteed turn-on at V_GS = 1.8 V (R_DS(on) = 0.145–0.18 Ω), the STR1P2UH7 is fully compatible with 1.8 V logic outputs. No external level shifter is needed, though gate resistor selection should account for ringing due to low C_iss.

Is the SOT-23 package of STR1P2UH7 RoHS-compliant and halogen-free?

Yes - the STR1P2UH7 uses an ECOPACK®-compliant SOT-23 package meeting RoHS Directive 2011/65/EU and halogen-free requirements per IEC 61249-2-21. The device marking "1L2U" and packaging code "Tape and reel" confirm full environmental compliance per ST's published ECOPACK® grade documentation.

STR1P2UH7 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STripFET™ H7

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: P-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 20 V

Current - Continuous Drain (Id) @ 25°C:: 1.4A (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 1.8V, 4.5V

Rds On (Max) @ Id, Vgs:: 100mOhm @ 700mA, 4.5V

Vgs(th) (Max) @ Id:: 1V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 4.8 nC @ 4.5 V

Vgs (Max):: ±8V

Input Capacitance (Ciss) (Max) @ Vds:: 510 pF @ 10 V

FET Feature:: -

Power Dissipation (Max):: 350mW (Tc)

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

STR1P2UH7 FAQ

1.How can I place an order for STR1P2UH7 through Aetrix?

Please submit a Request for Quotation (RFQ) for STR1P2UH7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STR1P2UH7 reliable?

The price and inventory of STR1P2UH7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STR1P2UH7 is usually 5 days.

3.What payment methods are accepted for STR1P2UH7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STR1P2UH7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STR1P2UH7?

STR1P2UH7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STR1P2UH7 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STR1P2UH7?

For technical support, including STR1P2UH7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STR1P2UH7 requirements.

6.How does Aetrix verify that STR1P2UH7 is sourced from the original manufacturer or authorized distributors?

All STR1P2UH7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STR1P2UH7 meets industry standards.

7.What is the process for return or replacement of STR1P2UH7?

All STR1P2UH7 units undergo pre-shipment inspection (PSI). If there is an issue with STR1P2UH7, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STR1P2UH7 part is unused and in its original packaging.

Return procedure for STR1P2UH7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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