STP70NF03L STMicroelectronics MOSFET (N-Channel) (Transistor Outline, Vertical) In Stock
STMicroelectronics STP70NF03L is an N-channel StripFET MOSFET rated at 30 V, 70 A, with an ultra-low 0.008 Ω on-resistance in a TO-220 package. Available in stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- STP70NF03L Datasheet PDF
- Category
- MOSFET (N-Channel)
- Price
- From $0.4888(MOQ 355)
- Temp Range
- ?°C to 175.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low 0.008 Ω (typical) / 0.0095 Ω (max) RDS(on) minimizing conduction losses in high-current switching applications
- 70 A continuous drain current rating enabling robust power switching in motor control and DC-DC converter stages
- 30 V drain-source breakdown voltage suited for 12 V and 24 V automotive and industrial power rail switching
- High 500 mJ avalanche energy (EAS) rating providing exceptional robustness against unclamped inductive switching transients
- TO-220AB package with exposed drain tab for efficient heat sinking in high-power designs requiring thermal management
Applications
The STP70NF03L is widely used in synchronous DC-DC buck converters, battery management systems, and motor drive circuits where high current switching at low drain-source voltages demands minimal RDS(on) to reduce heat generation and improve efficiency. Its 70 A capability and 30 V breakdown make it an excellent choice for 12 V automotive power stages, point-of-load converters in server power supplies, and solenoid or relay driver circuits in industrial machinery. The high avalanche energy rating also makes it robust in inductive load switching applications such as electric motor reversing circuits and power tool drives.
Specifications
| Date Of Intro | 1980-01-04 |
| YTEOL | 0 |
| Avalanche Energy Rating (Eas) | 500mJ |
| Case Connection | DRAIN |
| Configuration | SINGLE WITH BUILT-IN DIODE |
| DS Breakdown Voltage-Min | 30V |
| Drain Current-Max (ID) | 70A |
| Drain-source On Resistance-Max | 0.0095Ω |
| FET Technology | METAL-OXIDE SEMICONDUCTOR |
| JEDEC-95 Code | TO-220AB |
| JESD-30 Code | R-PSFM-T3 |
| JESD-609 Code | e3 |
| Number of Elements | 1 |
| Operating Mode | ENHANCEMENT MODE |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | FLANGE MOUNT |
| Polarity/Channel Type | N-CHANNEL |
| Power Dissipation-Max (Abs) | 100W |
| Pulsed Drain Current-Max (IDM) | 280A |
| Qualification Status | Not Qualified |
| Surface Mount | NO |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | THROUGH-HOLE |
| Terminal Position | SINGLE |
| Transistor Application | SWITCHING |
| Transistor Element Material | SILICON |
| Package | Transistor Outline, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What makes the STP70NF03L suitable for high-current DC-DC converter designs compared to higher-RDS(on) MOSFETs?
The STP70NF03L has an ultra-low maximum RDS(on) of 0.0095 Ω, which at its 70 A continuous drain current rating translates to approximately 0.665 W of static conduction loss per amp squared — far lower than typical 30 V MOSFETs in this class. This efficiency advantage is critical in synchronous buck converters, server power supplies, and automotive DC-DC stages where thermal budget is tight.
How does the 500 mJ avalanche energy rating of the STP70NF03L protect circuits in inductive switching applications?
The 500 mJ EAS (avalanche energy) rating means the STP70NF03L can absorb large inductive flyback energy spikes without damage when switching off high-current inductive loads. This makes it highly robust in motor reversal circuits, solenoid drivers, and relay control stages operating from 12 V or 24 V bus rails where snubberless operation at 70 A is desirable.
What voltage and current ratings define the STP70NF03L, and what system bus voltages does it target?
The STP70NF03L is rated for 30 V drain-source breakdown and 70 A continuous drain current. These parameters make it optimally suited for 12 V and 24 V power bus applications — including automotive body electronics, brushed DC motor drives, and point-of-load converter synchronous rectifiers — where low-voltage, high-current switching is the primary requirement.
Does the TO-220 package of the STP70NF03L support adequate thermal management for 70 A operation?
The TO-220AB package of the STP70NF03L features an exposed metal drain tab that allows direct attachment to a heatsink or thermally conductive PCB area, enabling effective conduction cooling. At 70 A with 0.008 Ω RDS(on), junction heating is modest, and with an appropriate heatsink maintaining case temperature below 100°C, continuous full-current operation within the device's thermal limits is achievable.
Related Guides
1206 100 uF MLCC Design Guide for Compact Bulk Decoupling
Design guidance for applying CL31A107MQHNNNE and related 1206 MLCCs in compact bulk decoupling networks.
Jul 3, 2026
0402 10 nF MLCC Design Guide for High-Speed Decoupling
Practical design guidance for using CL05B103KB5NNNC and related 0402 MLCCs in high-speed decoupling networks.
Jul 3, 2026
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 355+ | $0.5640 | $200.22 |
| 460+ | $0.5452 | $250.79 |
| 615+ | $0.4888 | $300.61 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”