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

STMicroelectronics STD70N03L-1

Name: STD70N03L-1
Brand: STMicroelectronics
SKU: STD70N03L-1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STD70N03L-1

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: TO-251-3 Short Leads, IPAK, TO-251AA

Datasheet:: STD70N03L-1.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STD70N03L-1 from STMicroelectronics is an N-channel 30V Power MOSFET in IPAK (TO-251) package, rated for 70A continuous drain current at 25°C and featuring R_DS(on) = 0.0059 Ω at V_GS = 10 V and T_j = 25°C. It delivers low conduction and switching losses, optimized for high-efficiency DC-DC converters and synchronous buck low-side switching.

For engineers reviewing the STD70N03L-1 datasheet, STD70N03L-1 pinout, STD70N03L-1 application, or STD70N03L-1 equivalent, this device is selected for its verified R_DS(on)/Q_g benchmark ratio, third-quadrant gate charge (Q_gls = 15 nC), and robust avalanche energy rating (E_AS = 300 mJ), critical for synchronous rectification and unclamped inductive load handling.

Technical Context

This MOSFET employs ST's STripFET™ III process to achieve ultra-low R_DS(on) and optimized gate charge distribution. Its threshold voltage (V_GS(th) = 1 V typ.) enables direct 5 V logic-level drive, and its C_iss/C_oss ratio supports fast, controlled switching with minimized Miller-induced shoot-through risk.

The device exhibits a thermal resistance junction-to-case of 2.14 °C/W and supports pulsed drain currents up to 280 A. Its source-drain diode has t_rr = 32 ns and Q_rr = 51 nC at T_j = 150°C, enabling efficient body-diode commutation in synchronous topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - Maximum blocking voltage for 24 V input rail applications with margin.
R_DS(on)	0.0059 Ω @ V_GS = 10 V, T_j = 25°C - Enables <1.5 W conduction loss at 70 A DC.
I_D (cont)	70 A @ T_C = 25°C - Supports high-current power stages without parallel devices.
Q_g	15.7 nC @ V_DD = 15 V, I_D = 70 A - Determines gate driver current requirement (~1.6 A peak for 10 ns rise).
E_AS	300 mJ - Withstands single unclamped inductive switching events in motor drives or SMPS.
t_r/t_f	95 ns / 15 ns @ R_G = 4.7 Ω - Enables >1 MHz switching with controlled EMI profile.
Q_gls	15 nC - Critical for minimizing gate loss during synchronous rectification in buck converters.

Pinout & Package

STD70N03L-1 uses the TO-251 (IPAK) package: three-terminal, surface-mount, single-gauge leadframe with exposed drain pad for thermal enhancement. Pin 1 = Gate, Pin 2 = Drain (tab), Pin 3 = Source.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (G)	Gate	Control terminal; accepts 0–20 V bias; low input capacitance (C_iss = 2200 pF) eases driving.
Pin 2 (D)	Drain	Main power output node; electrically connected to exposed metal tab for low-inductance, high-current path and thermal conduction.
Pin 3 (S)	Source	Power return/reference node; ties to ground or low-side switch node; defines V_GS reference.

Key Features

Feature	Design Value
STripFET™ III process	Enables industry-leading R_DS(on) × Q_g figure-of-merit for reduced total power loss.
Low V_GS(th)	1 V typical threshold allows reliable turn-on with 3.3 V or 5 V microcontroller GPIOs.
High avalanche ruggedness	300 mJ single-pulse E_AS eliminates need for external snubbers in flyback or relay-drive circuits.
Optimized body diode	32 ns reverse recovery time and 51 nC Q_rr minimize cross-conduction loss in synchronous rectifiers.
ECOPACK® compliance	Lead-free second-level interconnect meets RoHS and JEDEC JESD97 marking requirements.

Applications

DC-DC Synchronous Buck Converter

Automotive Body Control Module (BCM)

Use Scenario: Low-side switch in 12 V input → 3.3/5 V output buck regulator powering MCU and sensors.

IC Role / Device Role / Timing Role: High-current synchronous rectifier replacing Schottky diode to reduce conduction loss and improve efficiency above 85%.

Use Value: Achieves <0.8 W conduction loss at 70 A, enabling compact heatsink design and >95% peak efficiency at full load.

Use Scenario: Load switching for interior lighting, window lift motors, and HVAC actuators in 12 V vehicle electrical architecture.

IC Role / Device Role / Timing Role: High-reliability power switch with integrated avalanche capability for inductive load suppression.

Use Value: Eliminates external TVS/clamp diodes due to 300 mJ E_AS, reducing BOM count and PCB area by 20%.

Industrial Motor Starter

Server VRM Low-Side Switch

Use Scenario: Soft-start and on/off control of 24 V brushed DC motors in factory automation equipment.

IC Role / Device Role / Timing Role: Main power FET with fast turn-off (t_f = 15 ns) to limit inductive kick amplitude during commutation.

Use Value: Limits V_DS overshoot to <38 V under 20 A inductive load, avoiding overvoltage failure without snubber.

Use Scenario: Low-side FET in multiphase 48 V → 1 V VRM supplying AI accelerators and CPUs.

IC Role / Device Role / Timing Role: High-current, low-R_DS(on) switch optimized for third-quadrant conduction during dead-time.

Use Value: Q_gls = 15 nC reduces gate loss by 35% vs. standard MOSFETs, improving phase efficiency at 500 kHz switching.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRLZ44NPBF	R_DS(on) = 0.028 Ω @ 10 V (5× higher); Q_g = 67 nC; TO-220 package.	Higher conduction loss limits use to ≤20 A loads; unsuitable for high-frequency synchronous rectification.	Select only if cost sensitivity outweighs efficiency and thermal constraints.
STP70NF03L	Same die, DPAK package (STD70N03L); identical R_DS(on), Q_g, and SOA; tape-and-reel only.	Requires different PCB footprint and thermal interface; no mechanical difference in electrical performance.	Choose STD70N03L-1 for manual assembly or tube-based prototyping; STD70N03L for automated SMT lines.

Compared with IRLZ44NPBF, STD70N03L-1 delivers 80% lower conduction loss and 77% less gate charge, enabling higher power density. Against STD70N03L, it offers identical electrical specs but IPAK's lower profile and single-gauge leads simplify hand-soldering and thermal pad alignment.

Availability

STD70N03L-1 is available at Aetrix Electronics and suitable for DC-DC converters, automotive body electronics, and industrial motor control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STD70N03L-1 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, MEMS, power, and microcontroller products for industrial, automotive, and consumer markets.

STD70N03L-1 belongs to ST's STripFET™ III Power MOSFET product line, engineered specifically for high-efficiency, high-current switching in space-constrained power supplies and motor drives.

FAQ

Is STD70N03L-1 suitable for 5 V logic-level gate drive?

Yes. With a typical gate threshold voltage of 1 V and guaranteed turn-on at V_GS ≥ 4.5 V, STD70N03L-1 fully enhances using standard 5 V microcontroller outputs. Its R_DS(on) remains ≤0.0073 Ω at V_GS = 5 V and I_D = 35 A, ensuring low-loss operation without level-shifting circuitry.

What is the maximum safe operating temperature for continuous 70 A operation?

Continuous 70 A operation is rated only at case temperature T_C = 25°C. At T_C = 100°C, the maximum continuous drain current drops to 50 A per absolute maximum ratings. Thermal design must ensure R_th(j-c) ≤ 2.14 °C/W and sufficient copper area to maintain T_j ≤ 175°C under worst-case ambient conditions.

Does STD70N03L-1 include integrated gate protection?

No. STD70N03L-1 lacks integrated gate Zener clamping or ESD protection diodes. External gate resistors (typically 4.7–10 Ω) and optional 12–15 V Zener clamps between gate and source are recommended to prevent V_GS overstress during fast switching or noise coupling, especially in high-dV/dt environments.

Can STD70N03L-1 replace STD70N03L in existing designs?

Electrically yes-both share identical silicon, R_DS(on), Q_g, SOA, and thermal specs-but mechanically no. STD70N03L-1 uses IPAK (TO-251) with gull-wing leads; STD70N03L uses DPAK (TO-252) with J-bend leads. PCB footprint, solder stencil, and thermal pad layout must be redesigned for IPAK's smaller outline and different lead pitch.

STD70N03L-1 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STripFET™ III

Package/Case:: TO-251-3 Short Leads, IPAK, TO-251AA

Packaging:: Tube

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:: Through Hole

Supplier Device Package:: IPAK

STD70N03L-1 FAQ

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

Please submit a Request for Quotation (RFQ) for STD70N03L-1 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-1 reliable?

The price and inventory of STD70N03L-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STD70N03L-1 is usually 5 days.

3.What payment methods are accepted for STD70N03L-1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STD70N03L-1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STD70N03L-1?

STD70N03L-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STD70N03L-1 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-1?

For technical support, including STD70N03L-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STD70N03L-1 requirements.

6.How does Aetrix verify that STD70N03L-1 is sourced from the original manufacturer or authorized distributors?

All STD70N03L-1 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-1 meets industry standards.

7.What is the process for return or replacement of STD70N03L-1?

All STD70N03L-1 units undergo pre-shipment inspection (PSI). If there is an issue with STD70N03L-1, 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-1 part is unused and in its original packaging.

Return procedure for STD70N03L-1:

1.Submit a request within 90 days.

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

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