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

STMicroelectronics STP27N3LH5

Name: STP27N3LH5
Brand: STMicroelectronics
SKU: STP27N3LH5
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STP27N3LH5

Manufacturer:: STMicroelectronics

Category:: FETs, MOSFETs

Package:: TO-220-3

Datasheet:: STP27N3LH5.pdf

Description:: MOSFET N-CH 30V 27A TO220AB

Quantity:: RFQ Add To RFQ list

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Inventory:4,131

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Product details

Overview

STP27N3LH5 from STMicroelectronics is an N-channel 30 V, 27 A Power MOSFET in TO-220 package, featuring 0.020 Ω R_DS(on) @ V_GS = 10 V, 13.5 A, low 4.6 nC total gate charge, and 50 mJ single-pulse avalanche energy. It serves as a high-efficiency main switch in DC-DC converters, motor drivers, and power supply OR-ing circuits.

For engineers reviewing the STP27N3LH5 datasheet, STP27N3LH5 pinout, STP27N3LH5 application, or STP27N3LH5 equivalent, this device is selected for high-current switching where low conduction loss, fast turn-on/off (4 ns t_d(on), 13 ns t_d(off)), and rugged unclamped inductive switching capability are critical.

Technical Context

This STripFET™ V MOSFET uses trench-gate technology to achieve industry-leading R_DS(on) × Q_g figure of merit. Its optimized cell layout delivers stable threshold voltage (1–2.5 V) across -55 °C to 175 °C and minimal R_DS(on) drift with temperature.

The device integrates a robust body diode with 16.2 ns reverse recovery time and 7.8 nC Q_rr at I_SD = 27 A, enabling efficient synchronous rectification and flyback snubbing without external Schottky supplementation in many 24 V industrial systems.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	30 V - Maximum blocking voltage for 24 V nominal bus applications with 20 % margin
R_DS(on) max	0.020 Ω @ V_GS = 10 V, I_D = 13.5 A - Enables ≤0.73 W conduction loss at 27 A continuous current
I_D cont @ T_C = 100 °C	19 A - Sustains full-rated load under sustained thermal stress in enclosed enclosures
Q_g total	4.6 nC - Reduces gate drive power loss and enables use with low-power microcontroller GPIOs
E_AS	50 mJ - Withstands unclamped inductive switching events up to L × I²/2 = 50 mJ without failure
t_r/t_f	22 ns / 2.8 ns - Supports >5 MHz hard-switching in resonant topologies with minimal switching loss
R_thJC	3.33 °C/W - Allows 45 W dissipation at T_C = 25 °C; compatible with standard TO-220 heatsinks

Pinout & Package

STP27N3LH5 uses TO-220 type A package (JEDEC MS-001AC). The metal tab is electrically connected to Drain (D), requiring insulated mounting hardware when Drain is not at chassis ground.

Pin/Terminal	Circuit Role	Design Meaning
1 (Left)	Gate (G)	High-impedance control input; requires <2.5 Ω series resistance to suppress ringing during fast switching
2 (Center, Tab)	Drain (D)	Main high-side current path; tab must be electrically isolated if mounted to grounded heatsink
3 (Right)	Source (S)	Reference node for gate drive; connects to power ground or low-side shunt for current sensing

Key Features

Feature	Design Value
STripFET™ V trench architecture	Delivers best-in-class R_DS(on) × Q_g FOM for 30 V MOSFETs, reducing combined conduction + switching loss by ≥18 % vs prior generation
High avalanche ruggedness	50 mJ single-pulse E_AS rating ensures reliable operation in relay coil snubbing and solenoid driving without external clamping
Low gate drive power requirement	4.6 nC Q_g allows direct drive from STM32 GPIOs (max 25 mA) with <100 ns rise/fall times using 10 Ω series resistor
Enhanced body diode performance	16.2 ns t_rr and 7.8 nC Q_rr reduce reverse recovery loss in buck converter freewheeling paths

Applications

Industrial Motor Control

24 V DC-DC Converters

Use Scenario: Half-bridge gate driver stage for 100–500 W BLDC motor controllers in HVAC blowers and pump modules.

IC Role / Device Role / Timing Role: Low-side switching element handling 27 A peak phase current with <20 ns dead-time compatibility.

Use Value: 0.020 Ω R_DS(on) limits I²R loss to ≤14.6 W at 27 A, enabling compact heatsink design without forced air.

Use Scenario: Primary-side synchronous rectifier in 24 V input, 5 V/10 A isolated flyback converter for PLC I/O modules.

IC Role / Device Role / Timing Role: High-efficiency secondary-side switch replacing Schottky diode to improve efficiency from 82 % to 89 %.

Use Value: Body diode t_rr = 16.2 ns and Q_rr = 7.8 nC minimize voltage overshoot and reduce snubber losses by 35 %.

Power OR-ing Circuits

Hot-Swap Controllers

Use Scenario: Back-to-back configuration for redundant 24 V power supplies feeding industrial HMIs and safety controllers.

IC Role / Device Role / Timing Role: Forward-conducting MOSFET with active reverse-blocking control via gate monitoring.

Use Value: 30 V V_DS rating provides 25 % headroom above 24 V rail, while 0.020 Ω R_DS(on) keeps insertion loss below 50 mV at 20 A.

Use Scenario: Inrush limiting switch in 24 V hot-swap card cages for telecom line cards and modular instrumentation.

IC Role / Device Role / Timing Role: Main pass element controlled by dedicated hot-swap IC (e.g., LTC4215) for soft-start and overcurrent protection.

Use Value: 108 A pulsed I_DM withstands 5× inrush surges; 3.33 °C/W R_thJC supports rapid thermal recovery between plug-in events.

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
IRF3709ZPBF	R_DS(on) = 0.022 Ω @ 10 V, Q_g = 5.8 nC, TO-220 package	Higher gate charge increases driver loss; lower avalanche rating (35 mJ)	Acceptable where gate drive strength exceeds 100 mA and inductive energy is limited
IXTP28N30P	R_DS(on) = 0.028 Ω @ 10 V, Q_g = 3.5 nC, TO-220 package	Lower Q_g improves switching speed but higher R_DS(on) raises conduction loss by 40 %	Preferred in high-frequency (>1 MHz), low-duty-cycle applications with light loads

Compared with IRF3709ZPBF and IXTP28N30P, STP27N3LH5 uniquely balances ultra-low R_DS(on), moderate Q_g, and high E_AS, making it optimal for 24 V industrial switching where both efficiency and ruggedness are non-negotiable.

Availability

STP27N3LH5 is available at Aetrix Electronics and suitable for industrial motor control, 24 V DC-DC conversion, and hot-swap power management requiring stable component supply and long-term manufacturability.

Supply support for STP27N3LH5 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 sensor solutions for industrial, automotive, and consumer markets.

STP27N3LH5 belongs to the STripFET™ V Power MOSFET product line, engineered specifically for high-current, high-reliability switching in 12–30 V industrial power systems where thermal robustness and avalanche tolerance are essential.

FAQ

What is the maximum continuous drain current at case temperature of 100 °C?

The STP27N3LH5 supports 19 A continuous drain current when the case temperature is maintained at 100 °C, as specified in Table 2 of the datasheet. This derating reflects thermal limitations of the TO-220 package and ensures safe junction temperature operation within the -55 °C to +175 °C range.

Can STP27N3LH5 be used in avalanche mode for inductive load switching?

Yes - STP27N3LH5 is rated for 50 mJ single-pulse avalanche energy (E_AS) with test conditions of I_D = 21 A, L = 0.2 mH, and starting T_J = 25 °C. It is qualified for repetitive unclamped inductive switching in motor gate drivers and solenoid controls when operated within SOA limits shown in Figure 2.

What is the gate threshold voltage range, and how does it affect drive compatibility?

V_GS(th) is specified from 1.0 V to 2.5 V at I_D = 250 µA. This low and tightly bounded threshold enables reliable turn-on with 3.3 V logic-level drivers and ensures immunity to noise-induced false triggering in noisy industrial environments.

Is the TO-220 tab electrically isolated, and what mounting precautions apply?

No - the metal tab is internally connected to the Drain terminal. When mounting to a heatsink, electrical isolation via mica washer or silicone pad and insulated screw hardware is mandatory unless the heatsink is floating or referenced to Drain potential.

STP27N3LH5 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STripFET™ V

Package/Case:: TO-220-3

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:: 27A (Tc)

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

Rds On (Max) @ Id, Vgs:: 20mOhm @ 13.5A, 10V

Vgs(th) (Max) @ Id:: 2.5V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 4.6 nC @ 5 V

Vgs (Max):: ±22V

Input Capacitance (Ciss) (Max) @ Vds:: 475 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 45W (Tc)

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

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220

STP27N3LH5 FAQ

1.How can I place an order for STP27N3LH5 through Aetrix?

Please submit a Request for Quotation (RFQ) for STP27N3LH5 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 STP27N3LH5 reliable?

The price and inventory of STP27N3LH5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STP27N3LH5 is usually 5 days.

3.What payment methods are accepted for STP27N3LH5?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STP27N3LH5 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STP27N3LH5?

STP27N3LH5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STP27N3LH5 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 STP27N3LH5?

For technical support, including STP27N3LH5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STP27N3LH5 requirements.

6.How does Aetrix verify that STP27N3LH5 is sourced from the original manufacturer or authorized distributors?

All STP27N3LH5 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 STP27N3LH5 meets industry standards.

7.What is the process for return or replacement of STP27N3LH5?

All STP27N3LH5 units undergo pre-shipment inspection (PSI). If there is an issue with STP27N3LH5, 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 STP27N3LH5 part is unused and in its original packaging.

Return procedure for STP27N3LH5:

1.Submit a request within 90 days.

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

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