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STMicroelectronics STP140NF75
- Part No.:
- STP140NF75
- Manufacturer:
- STMicroelectronics
- Category:
- FETs, MOSFETs
- Package:
- TO-220-3
- Datasheet:
-
STP140NF75.pdf
- Description:
- MOSFET N-CH 75V 120A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:412
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Product details
Overview
STP140NF75 from STMicroelectronics is an N-channel 75V Power MOSFET in TO-220 package, featuring RDS(on) ≤ 0.0075 Ω at VGS = 10 V, 120 A continuous drain current at TC = 25°C, 100% avalanche tested, and optimized for high-efficiency DC-DC converters and motor drive half-bridges.
For engineers reviewing the STP140NF75 datasheet, STP140NF75 pinout, STP140NF75 application, or STP140NF75 equivalent, key selection criteria include its low on-resistance, rugged unclamped inductive switching capability (EAS = 750 mJ), thermal resistance (Rthj-case = 0.48 °C/W), and gate charge profile (Qg = 160 nC) for hard-switched power stages.
Technical Context
This STripFET™ III device uses ST's "Single Feature Size™" strip-based process to achieve high cell density and low RDS(on). Its SOA is defined for unclamped inductive loads with pulse energy limited by junction temperature and thermal impedance.
The integrated body diode exhibits trr = 115 ns and Qrr = 450 nC under specified conditions (ISD = 120 A, di/dt = 100 A/µs, Tj = 150°C), enabling synchronous rectification in high-frequency buck converters without external Schottky replacement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 75 V - Maximum blocking voltage for 48 V bus systems with 50% safety margin against transients. |
| RDS(on) | ≤ 0.0075 Ω - Enables <1 W conduction loss at 120 A, critical for high-current power stages. |
| ID (cont) | 120 A @ TC = 25°C - Sustains full load in industrial motor drives with heatsink-mounted TO-220 layout. |
| EAS | 750 mJ - Supports single-pulse unclamped inductive switching up to 60 A at 30 V without failure. |
| Qg | 160 nC - Determines gate driver power requirement; compatible with standard 2 A peak drivers at 100 kHz. |
| Rthj-case | 0.48 °C/W - Allows 310 W dissipation at ΔT = 150°C, defining minimum heatsink thermal mass for continuous operation. |
| trr | 115 ns - Limits reverse recovery losses in synchronous buck topologies operating above 200 kHz. |
Pinout & Package
STP140NF75 is housed in a through-hole TO-220 package with isolated tab (drain-connected). The case is electrically connected to pin 2 (Drain), requiring insulating mounting hardware when mounted to grounded heatsinks.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Gate | High-impedance control terminal; requires 10 V drive for full enhancement; sensitive to ESD. |
| 2 | Drain | Main high-side power terminal; internally bonded to metal tab; must be insulated from heatsink unless system ground referenced. |
| 3 | Source | Power return path and gate reference node; connects to PCB ground plane for low-inductance switching loop. |
Key Features
| Feature | Design Value |
|---|---|
| 100% avalanche tested | Guarantees robustness in unclamped inductive switching events without derating or external snubbers. |
| STripFET™ III process | Delivers 25% lower RDS(on) vs prior generation at same die size, improving power density in space-constrained designs. |
| Low Qgd/Qg ratio (70/160 nC) | Reduces Miller plateau duration, enabling faster turn-off and improved hard-switching efficiency. |
| ECOPACK® compliant | Lead-free second-level interconnect meets RoHS and JEDEC JESD97 marking requirements for environmental compliance. |
Applications
| Industrial Motor Drives | Server VRMs |
|---|---|
|
Use Scenario: Half-bridge leg in 48 V BLDC motor controller for HVAC blowers. IC Role / Device Role / Timing Role: High-side switching element handling 100 A peak currents with 20 kHz PWM. Use Value: Low RDS(on) reduces I²R losses by >30% vs legacy 10 mΩ devices, lowering heatsink mass by 40%. |
Use Scenario: Synchronous rectifier in 12 V → 1.2 V, 200 A multiphase buck converter for AI accelerators. IC Role / Device Role / Timing Role: Low-side switch with fast body diode recovery to minimize dead-time losses. Use Value: 115 ns trr enables <50 ns dead time, increasing conversion efficiency by 0.8% at full load. |
| Telecom DC-DC Converters | EV Onboard Chargers |
|
Use Scenario: Primary-side switch in 3.3 kW isolated LLC resonant converter for 5G base station power supplies. IC Role / Device Role / Timing Role: Hard-switched MOSFET operating at 300 kHz with ZVS-assisted turn-on. Use Value: 750 mJ EAS withstands leakage inductance spikes during light-load ZVS transitions without clamping. |
Use Scenario: Output stage switch in bidirectional AC/DC PFC + DC/DC stage of 6.6 kW OBC. IC Role / Device Role / Timing Role: Unidirectional high-current switch in interleaved totem-pole PFC bridge. Use Value: 120 A rating supports 33 A per phase in 6-phase design, reducing parallel count and layout complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel 75V power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRFB4115PBF | RDS(on) = 0.0055 Ω, Qg = 195 nC, TO-220 package, no avalanche rating specified | Lacks guaranteed avalanche ruggedness; requires external clamping in inductive switching | Prefer when lowest conduction loss dominates and SOA stress is absent |
| IXTH120N075L2 | RDS(on) = 0.0072 Ω, Qg = 135 nC, TO-247 package, 100% UIS tested | Larger footprint and higher cost; superior gate charge but no thermal advantage over TO-220 | Choose when higher gate drive margin or legacy TO-247 board compatibility required |
Compared with IRFB4115PBF and IXTH120N075L2, STP140NF75 uniquely balances low RDS(on), proven avalanche immunity, and TO-220 manufacturability-making it optimal for cost-sensitive, reliability-critical industrial power stages where thermal management is constrained.
Availability
STP140NF75 is available at Aetrix Electronics and suitable for industrial motor drives, server VRMs, telecom DC-DC converters, and EV onboard chargers requiring stable component supply across multi-year production cycles.
Supply support for STP140NF75 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, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.
STP140NF75 belongs to the STripFET™ III Power MOSFET product line, engineered specifically for high-current, high-reliability switching in industrial power conversion and motor control applications where ruggedness and thermal performance are critical.
FAQ
What is the maximum safe operating temperature for STP140NF75?
The maximum junction temperature (Tj) is 175°C, and the maximum lead temperature for soldering is 300°C for 10 seconds at 1.6 mm from the case. Continuous operation requires maintaining Tj ≤ 175°C via heatsink design using Rthj-case = 0.48 °C/W and ambient thermal path analysis.
Does STP140NF75 require a gate resistor for reliable switching?
Yes-a gate resistor (typically 4.7 Ω) is recommended to dampen ringing and control dV/dt during turn-on/turn-off. The datasheet specifies switching times (e.g., tr = 140 ns, tf = 90 ns) with RG = 4.7 Ω, and omitting it risks oscillation, shoot-through, or gate oxide overstress.
Can STP140NF75 replace STB140NF75 in existing designs?
Yes-STP140NF75 and STB140NF75 share identical electrical specifications (VDS, RDS(on), ID, EAS) and thermal ratings, differing only in package (TO-220 vs D2PAK). Mechanical redesign is required for footprint and mounting, but no circuit revalidation is needed for electrical performance.
Is the body diode suitable for synchronous rectification?
Yes-the source-drain diode has trr = 115 ns and Qrr = 450 nC under rated conditions, making it viable for synchronous rectification in buck converters up to ~300 kHz. However, for >95% efficiency targets, a discrete Schottky may still be preferred due to lower forward voltage.
STP140NF75 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- STripFET™ III
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 75 V
- Current - Continuous Drain (Id) @ 25°C:
- 120A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 7.5mOhm @ 70A, 10V
- Vgs(th) (Max) @ Id:
- 4V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 218 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 5000 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 310W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220
STP140NF75 FAQ
1.How can I place an order for STP140NF75 through Aetrix?
Please submit a Request for Quotation (RFQ) for STP140NF75 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 STP140NF75 reliable?
The price and inventory of STP140NF75 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP140NF75 is usually 5 days.
3.What payment methods are accepted for STP140NF75?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP140NF75 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STP140NF75?
STP140NF75 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STP140NF75 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 STP140NF75?
For technical support, including STP140NF75 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP140NF75 requirements.
6.How does Aetrix verify that STP140NF75 is sourced from the original manufacturer or authorized distributors?
All STP140NF75 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 STP140NF75 meets industry standards.
7.What is the process for return or replacement of STP140NF75?
All STP140NF75 units undergo pre-shipment inspection (PSI). If there is an issue with STP140NF75, 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 STP140NF75 part is unused and in its original packaging.
Return procedure for STP140NF75:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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