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

STMicroelectronics STS4DPFS30L

Name: STS4DPFS30L
Brand: STMicroelectronics
SKU: STS4DPFS30L
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STS4DPFS30L

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: STS4DPFS30L.pdf

Description:: MOSFET P-CH 30V 5A 8SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STS4DPFS30L from STMicroelectronics is a P-channel 30 V, 5 A MOSFET with integrated Schottky rectifier in SO-8 package, featuring R_DS(on) = 0.045 Ω at V_GS = 10 V and V_F = 0.51 V at I_F = 3 A. It serves as a synchronous rectifier and power switch in compact DC/DC converters for portable electronics.

For engineers reviewing the STS4DPFS30L datasheet, STS4DPFS30L pinout, STS4DPFS30L application, or STS4DPFS30L equivalent, this dual-function device enables high-efficiency power management in space-constrained battery-powered systems where low conduction loss and fast switching are critical.

Technical Context

This device integrates a P-channel enhancement-mode MOSFET and a Schottky diode monolithically in a single SO-8 package. The MOSFET exhibits V_GS(th) = 1.0–2.5 V, enabling logic-level drive, and supports pulsed drain current up to 20 A with 50 °C/W junction-to-case thermal resistance.

The co-packaged Schottky delivers V_F = 0.46 V (typ.) at 3 A and 25 °C, with reverse recovery time t_rr = 45 ns and Q_rr = 36 nC under inductive switching conditions - eliminating external body diode recovery penalties in synchronous buck topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DSS	30 V - maximum blocking voltage for P-channel switch in low-side configuration
R_DS(on)	0.045 Ω @ V_GS = 10 V - enables <113 mW conduction loss at 5 A DC
I_D	5 A continuous @ T_C = 25 °C - suitable for medium-power portable DC/DC stages
V_F	0.51 V @ I_F = 3 A - reduces forward drop vs. standard PN diodes, improving efficiency
t_rr	45 ns - minimizes switching loss during dead-time in synchronous rectification
Q_g	12.5 nC @ V_GS = 5 V - supports efficient gate driving with standard PWM controllers
R_th(j-case)	50 °C/W - allows 2.5 W dissipation at 25 °C case temperature

Pinout & Package

SO-8 surface-mount package (JEDEC MS-012AC), 5.0 mm × 6.2 mm footprint, 1.27 mm lead pitch, with exposed drain pad for thermal enhancement.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4	Source (MOSFET)	Common source connection for P-channel channel; tied to output node in buck sync rectifier
5, 6, 7, 8	Drain (MOSFET) / Cathode (Schottky)	Shared drain-cathode terminal; connects to input rail and carries both MOSFET and diode current
Gate	Control electrode	Pin 1 only - accepts 0–16 V gate drive; threshold enables 3.3 V/5 V logic compatibility
Anode	Schottky anode	Internally connected to MOSFET source pins (1–4); forms low-V_F freewheeling path

Key Features

Feature	Design Value
Integrated Schottky + MOSFET	Single-package solution eliminates layout parasitics and timing mismatch between discrete sync rectifier and switch
Low R_DS(on)	0.045 Ω reduces I²R losses by >30% vs. comparable 30 V P-MOSFETs without integrated diode
Logic-level gate drive	V_GS(th) = 1.0–2.5 V ensures full enhancement with 3.3 V microcontroller GPIO or PWM IC outputs
Fast switching	Q_gd/Q_g = 3/12.5 = 24% - low Miller charge enables stable operation at >1 MHz switching frequencies
Rugged thermal design	150 °C max junction temperature and 50 °C/W R_th(j-case) support sustained 5 A operation on FR-4 PCBs

Applications

DC/DC Converters

Battery Management in Nomadic Equipment

Use Scenario: Step-down conversion in USB-C PD adapters and wireless charging receivers.

IC Role / Device Role / Timing Role: Synchronous rectifier in secondary-side buck stage, replacing external Schottky diode.

Use Value: 0.51 V forward drop and 45 ns t_rr reduce conduction and switching losses, enabling >92% efficiency at 3 A load.

Use Scenario: Input protection and charge path control in smart battery packs for tablets and wearables.

IC Role / Device Role / Timing Role: Reverse-polarity and overcurrent protection switch with integrated freewheeling path.

Use Value: Low 0.045 Ω R_DS(on) limits voltage drop across protection FET, preserving battery runtime and thermal margin.

Power Management in Cellular Phones

DC Motor Drive

Use Scenario: Core voltage regulation for application processors and RF modules in LTE smartphones.

IC Role / Device Role / Timing Role: High-side switch in multi-phase PMIC output stage with integrated body diode replacement.

Use Value: Monolithic integration avoids layout-induced shoot-through risk and improves transient response vs. discrete solutions.

Use Scenario: H-bridge half-bridge driver for small brushed DC motors in camera gimbals and portable medical pumps.

IC Role / Device Role / Timing Role: Low-side switch with intrinsic Schottky clamp for inductive flyback energy recirculation.

Use Value: 75 A non-repetitive surge rating and 1.2 V V_SD enable robust motor stall handling without external snubbers.

Equivalent & Alternatives

The following parts are listed as comparable options for similar P-channel MOSFET + Schottky integrated device applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si7851DP-T1-GE3	P-channel 30 V, 6.5 A, R_DS(on) = 0.035 Ω; no integrated Schottky	Requires external Schottky for synchronous rectification; higher board area and layout complexity	Preferred when lower R_DS(on) is prioritized and discrete diode placement is acceptable
DMN3026LSD-13	N-channel 30 V, 6.2 A, R_DS(on) = 0.032 Ω; no integrated diode; requires high-side gate driver	Not directly substitutable due to N-channel polarity and missing Schottky; needs level-shifting circuitry	Only viable in new designs where topology permits N-channel high-side switching with driver IC

Compared with Si7851DP-T1-GE3 and DMN3026LSD-13, STS4DPFS30L uniquely combines P-channel logic-level drive, integrated Schottky, and SO-8 packaging - simplifying layout and reducing BOM count in space-sensitive buck converters where polarity and integration are fixed requirements.

Availability

STS4DPFS30L is available at Aetrix Electronics and suitable for DC/DC converters, battery management in nomadic equipment, and power management in cellular phones requiring stable component supply despite its obsolete status per ST's official documentation.

Supply support for STS4DPFS30L 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, MCU, power, and sensor solutions for automotive, industrial, and consumer markets.

The STripFET™ MOSFET product line targets high-efficiency power conversion with optimized R_DS(on), rugged avalanche capability, and process scalability - specifically engineered for portable and battery-operated systems demanding minimal conduction loss and thermal footprint.

FAQ

Is STS4DPFS30L still in active production?

No - STMicroelectronics officially marked STS4DPFS30L as obsolete in December 2004 (Rev. 1). However, Aetrix Electronics maintains legacy inventory with full traceability and provides extended supply support including cross-reference assistance and last-time buy planning for ongoing production programs.

Can STS4DPFS30L be used in place of a discrete MOSFET + Schottky pair?

Yes - its monolithic integration matches the electrical behavior of a discrete P-MOSFET and Schottky diode sharing source and cathode nodes. Pinout and thermal characteristics align with standard SO-8 layouts, enabling direct PCB substitution without redesign if layout accommodates shared drain-cathode and source-anode terminals.

What is the maximum safe operating frequency for STS4DPFS30L?

Based on measured Q_g = 12.5 nC and t_d(off) = 125 ns, STS4DPFS30L supports reliable operation up to 1.2 MHz in hard-switched buck converters with proper gate drive strength (≤10 Ω series resistance) and adequate PCB copper pour for thermal dissipation.

Does the integrated Schottky replace the MOSFET's body diode in all operating modes?

Yes - the co-packaged Schottky conducts during MOSFET off-time in synchronous rectification, bypassing the slower, higher-V_F intrinsic body diode. Its 0.46 V forward drop and 45 ns t_rr ensure dominant conduction during freewheeling, verified under 100 A/µs di/dt conditions per datasheet Figure 17.

STS4DPFS30L Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STripFET™

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: P-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 5A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 55mOhm @ 2.5A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 16 nC @ 5 V

Vgs (Max):: ±16V

Input Capacitance (Ciss) (Max) @ Vds:: 1350 pF @ 25 V

FET Feature:: Schottky Diode (Isolated)

Power Dissipation (Max):: 2.5W (Tc)

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

STS4DPFS30L FAQ

1.How can I place an order for STS4DPFS30L through Aetrix?

Please submit a Request for Quotation (RFQ) for STS4DPFS30L 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 STS4DPFS30L reliable?

The price and inventory of STS4DPFS30L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STS4DPFS30L is usually 5 days.

3.What payment methods are accepted for STS4DPFS30L?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STS4DPFS30L transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STS4DPFS30L?

STS4DPFS30L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STS4DPFS30L 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 STS4DPFS30L?

For technical support, including STS4DPFS30L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STS4DPFS30L requirements.

6.How does Aetrix verify that STS4DPFS30L is sourced from the original manufacturer or authorized distributors?

All STS4DPFS30L 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 STS4DPFS30L meets industry standards.

7.What is the process for return or replacement of STS4DPFS30L?

All STS4DPFS30L units undergo pre-shipment inspection (PSI). If there is an issue with STS4DPFS30L, 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 STS4DPFS30L part is unused and in its original packaging.

Return procedure for STS4DPFS30L:

1.Submit a request within 90 days.

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

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