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

STMicroelectronics STD70N03L

Name: STD70N03L
Brand: STMicroelectronics
SKU: STD70N03L
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STD70N03L

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: STD70N03L.pdf

Description:: MOSFET N-CH 30V 70A DPAK

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STD70N03L from STMicroelectronics is an N-channel 30V Power MOSFET in DPAK package, optimized for high-efficiency DC-DC converters with R_DS(on) = 0.0059Ω @ V_GS = 10V, I_D = 35A, 70A continuous drain current at T_C = 25°C, and low gate charge (Q_g = 15.7 nC). It serves as a synchronous rectifier or low-side switch in buck converters.

For engineers reviewing the STD70N03L datasheet, STD70N03L pinout, STD70N03L application, or STD70N03L equivalent, key selection criteria include conduction loss minimization via ultra-low R_DS(on), switching loss reduction through low Q_g and C_oss, thermal performance governed by R_thj-case = 2.14°C/W, and suitability for high-current, high-frequency synchronous rectification.

Technical Context

This STripFET™ III MOSFET employs advanced trench-gate process to achieve industry-leading R_DS(on) × Q_g figure-of-merit. Its low threshold voltage (V_GS(th) = 1V typ.) enables direct drive from 3.3V/5V logic, while its 30V V_DS rating targets 12V-input DC-DC stages.

The device features integrated source-drain diode with t_rr = 32 ns and Q_rr = 51 nC at T_j = 150°C, supporting fast recovery in synchronous buck topologies. Its safe operating area supports pulsed drain currents up to 280A, enabling robust transient handling.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - Maximum blocking voltage for 12V bus applications with margin
R_DS(on)	0.0059 Ω @ V_GS=10V, I_D=35A - Enables <1.5W conduction loss at 70A in TO-252 footprint
I_D (cont)	70 A @ T_C=25°C - Supports high-current power stages without parallel devices
Q_g	15.7 nC - Reduces gate driver power and switching transition time
R_thj-case	2.14 °C/W - Allows 70W dissipation with ≤150°C junction rise over 25°C case
t_rr	32 ns - Minimizes reverse recovery loss during high-side FET turn-on
V_GS(th)	1 V typ. - Compatible with 3.3V microcontroller GPIO for direct low-side drive

Pinout & Package

DPAK (TO-252) package: surface-mount, single-die, exposed drain pad for thermal enhancement and electrical connection. Three-terminal configuration with drain connected to tab.

Pin/Terminal	Circuit Role	Design Meaning
1 (Source)	Source terminal	Reference node for gate control; connects to output rail or ground return path
2 (Gate)	Control input	High-impedance MOSFET gate requiring <16 nC charge for full enhancement
3 (Drain)	Power output / high-side return	Connected to exposed metal tab; primary heat path and high-current path to input bus

Key Features

Feature	Design Value
STripFET™ III technology	Enables 0.0059Ω R_DS(on) in DPAK, reducing conduction loss by >25% vs prior-gen 30V MOSFETs
Low Q_g/Q_gd ratio	Q_gd/Q_g ≈ 0.22 - Suppresses Miller-induced shoot-through in synchronous buck operation
Enhanced body diode	Q_rr = 51 nC, t_rr = 32 ns - Limits voltage overshoot and EMI during hard commutation
ECOPACK® compliance	Lead-free second-level interconnect per JEDEC JESD97 - Meets RoHS and halogen-free requirements

Applications

Server VRM

Automotive ADAS Power Supply

Use Scenario: 12V-to-1V/100A point-of-load converter supplying CPU core voltage in datacenter servers.

IC Role / Device Role / Timing Role: Low-side synchronous rectifier in interleaved multiphase buck stage.

Use Value: 0.0059Ω R_DS(on) cuts conduction loss to ~0.4W at 70A, enabling >94% efficiency at full load.

Use Scenario: 12V-to-3.3V/5V dual-output supply for radar sensor and camera ECU in autonomous driving systems.

IC Role / Device Role / Timing Role: Primary switch in high-frequency (500 kHz) buck regulator powering image signal processor.

Use Value: 15.7 nC Q_g and 32 ns t_rr enable clean zero-voltage switching transitions, reducing EMI below CISPR-25 Class 5 limits.

Industrial PLC I/O Module

USB-C PD Sink Converter

Use Scenario: 24V-to-5V/3A isolated auxiliary supply for digital I/O protection circuitry in programmable logic controllers.

IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier in flyback-derived topology.

Use Value: Integrated source-drain diode with 1.3V V_SD at 35A eliminates need for external Schottky, simplifying BOM and layout.

Use Scenario: 20V-to-5V/3A buck converter in USB-C power delivery sink adapter for laptop charging.

IC Role / Device Role / Timing Role: High-current low-side switch in compact 1 MHz buck stage.

Use Value: DPAK thermal resistance of 2.14°C/W allows 70W dissipation with minimal heatsinking, enabling fanless 65W adapter design.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel 30V power MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRLZ44NPBF	R_DS(on) = 0.028Ω @ V_GS=5V; Q_g = 44 nC; TO-220 package	Higher conduction loss, larger footprint, no ECOPACK® marking	Acceptable where cost sensitivity outweighs efficiency and thermal constraints
DMT6009LPS-13	R_DS(on) = 0.0065Ω @ V_GS=10V; Q_g = 12.5 nC; PowerDI3333 package	Smaller footprint, lower Q_g, but 50A I_D rating limits peak current capability	Preferred for space-constrained designs needing faster switching, not 70A continuous duty

Compared with IRLZ44NPBF and DMT6009LPS-13, STD70N03L uniquely balances 70A current capacity, 0.0059Ω R_DS(on), and DPAK thermal performance-making it optimal for high-power density, high-efficiency DC-DC converters where both conduction and switching losses must be minimized simultaneously.

Availability

STD70N03L is available at Aetrix Electronics and suitable for server VRMs, automotive ADAS power supplies, and industrial PLC I/O modules requiring stable component supply and long-term lifecycle support.

Supply support for STD70N03L 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, Switzerland, designing and manufacturing analog, MCU, power, and sensing solutions for industrial, automotive, and consumer markets.

STD70N03L belongs to ST's STripFET™ III Power MOSFET product line, engineered specifically for high-frequency, high-efficiency DC-DC conversion in computing, telecom, and automotive power systems.

FAQ

Is STD70N03L suitable for 5V gate drive?

Yes. With V_GS(th) = 1V (typ.), STD70N03L fully enhances at 5V gate drive, delivering R_DS(on) = 0.007Ω. However, R_DS(on) rises to 0.0108Ω at T_j = 125°C under 5V drive-designers should verify thermal margin and efficiency at worst-case temperature.

What is the maximum safe operating frequency for STD70N03L in a buck converter?

Based on t_d(on) + t_r + t_d(off) + t_f = 150 ns total switching time and recommended minimum off-time for diode recovery, STD70N03L supports reliable operation up to 1.2 MHz in well-designed layouts with optimized gate drive and PCB thermal vias.

Does STD70N03L have avalanche ruggedness rating?

Yes. STD70N03L is rated for E_AS = 300 mJ (single-pulse avalanche energy) at T_j = 25°C with I_D = 30A and V_DD = 15V. This supports unclamped inductive switching events but does not guarantee repetitive avalanche operation.

Can STD70N03L replace STD70N03L-1 in production?

No. STD70N03L-1 uses IPAK (TO-251) package with different mechanical dimensions and thermal interface. While electrically identical, the DPAK (STD70N03L) and IPAK (STD70N03L-1) packages are not interchangeable on PCB-footprint, soldering profile, and thermal mounting differ significantly.

STD70N03L Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STripFET™ III

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 30 V

Current - Continuous Drain (Id) @ 25°C:: 70A (Tc)

Drive Voltage (Max Rds On, Min Rds On):: 5V, 10V

Rds On (Max) @ Id, Vgs:: 7.3mOhm @ 35A, 10V

Vgs(th) (Max) @ Id:: 1V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 21 nC @ 5 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 2200 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 70W (Tc)

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DPAK

STD70N03L FAQ

1.How can I place an order for STD70N03L through Aetrix?

Please submit a Request for Quotation (RFQ) for STD70N03L 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 STD70N03L reliable?

The price and inventory of STD70N03L are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STD70N03L is usually 5 days.

3.What payment methods are accepted for STD70N03L?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STD70N03L transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STD70N03L?

STD70N03L orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STD70N03L 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 STD70N03L?

For technical support, including STD70N03L datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STD70N03L requirements.

6.How does Aetrix verify that STD70N03L is sourced from the original manufacturer or authorized distributors?

All STD70N03L 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 STD70N03L meets industry standards.

7.What is the process for return or replacement of STD70N03L?

All STD70N03L units undergo pre-shipment inspection (PSI). If there is an issue with STD70N03L, 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 STD70N03L part is unused and in its original packaging.

Return procedure for STD70N03L:

1.Submit a request within 90 days.

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

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