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Infineon Technologies IRFS4321TRL7PP
- Part No.:
- IRFS4321TRL7PP
- Manufacturer:
- Infineon Technologies
- Category:
- FETs, MOSFETs
- Package:
- TO-263-7, D2PAK (6 Leads + Tab)
- Datasheet:
-
IRFS4321TRL7PP.pdf
- Description:
- MOSFET N-CH 150V 86A D2PAK-7
- Quantity:
- Payment:
- Shipping:
Inventory:8,749
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Product details
Overview
IRFS4321TRL7PP from Infineon Technologies (formerly International Rectifier) is a 150V, 86A N-channel enhancement-mode Power MOSFET in D2Pak-7Pin package, featuring 11.7mΩ typical RDS(on) at VGS = 10V, 71nC total gate charge, and fully characterized avalanche SOA. It serves as a high-current switching element in hard-switched DC-DC converters and UPS output stages.
For engineers reviewing the IRFS4321TRL7PP datasheet, IRFS4321TRL7PP pinout, IRFS4321TRL7PP application, or IRFS4321TRL7PP equivalent, key selection criteria include its 150V VDSS, 350W PD at TC = 25°C, 0.43°C/W RθJC, 120mJ single-pulse avalanche energy, and optimized body diode recovery (trr = 89ns, Qrr = 300nC) for synchronous rectification.
Technical Context
This device uses planar stripe HEXFET® technology with integrated body diode optimized for fast, soft reverse recovery-critical for reducing EMI and voltage spikes in high-frequency SMPS topologies. Its 7-pin D2Pak layout separates source and gate terminals to minimize common-source inductance during high-di/dt switching.
The MOSFET supports gate drive voltages up to ±30V and exhibits a positive temperature coefficient for RDS(on), enabling stable parallel operation. Avalanche robustness is thermally limited to 120mJ per pulse, validated under unclamped inductive test conditions with IAS = 50A and L = 0.096mH.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 150V - Maximum drain-to-source blocking voltage before avalanche onset; defines usable bus voltage margin in 48V–100V systems. |
| RDS(on) max | 14.7mΩ @ VGS = 10V, ID = 34A - Sets conduction loss floor; enables <1.5W loss at 60A continuous current with proper heatsinking. |
| Qg max | 110nC - Determines gate driver power requirement and switching speed; supports ~100kHz hard-switching with ≤2.5Ω gate resistance. |
| trr | 89ns (typ.) @ IF = 50A, dI/dt = 100A/µs - Enables low-loss synchronous rectification without external snubbers in LLC or phase-shifted full-bridge converters. |
| EAS | 120mJ - Single-pulse avalanche energy rating; allows safe operation during transient overvoltage events like load dump or inductive kickback. |
| RθJC | 0.43°C/W - Junction-to-case thermal resistance; permits 350W dissipation with ≤150°C junction rise above 25°C case temperature. |
| ID @ TC = 100°C | 61A - Continuous drain current derated for industrial ambient; confirms suitability for enclosed power supplies operating at elevated temperatures. |
Pinout & Package
IRFS4321TRL7PP is housed in a surface-mount D2Pak-7Pin (TO-263-7L) package with exposed drain pad for enhanced thermal performance and separate Kelvin source connection to reduce gate drive loop inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (G) | Gate | Main control terminal; accepts 10V logic-level drive; internal RG = 0.8Ω limits ringing but requires adequate gate driver current capability. |
| 2 (S) | Source (Power) | Main current return path; connected to PCB ground plane; carries full load current and must be routed with low inductance. |
| 3 (D) | Drain (Tab) | Exposed copper drain pad soldered to large copper area; primary thermal path to heatsink; electrically tied to all drain pins. |
| 4 (SK) | Kelvin Source | Isolated sense terminal for gate drive reference; eliminates source inductance impact on switching timing and stability. |
| 5 (D) | Drain (Pin) | Secondary drain connection; used for current sensing or auxiliary routing; shares same potential as drain tab. |
| 6 (G) | Gate (Redundant) | Second gate pin for paralleling or low-inductance gate loop; must be shorted to Pin 1 in single-device applications. |
| 7 (S) | Source (Redundant) | Additional source pin for current sharing or layout flexibility; electrically identical to Pin 2. |
Key Features
| Feature | Design Value |
|---|---|
| Low RDS(on) with Kelvin source | 11.7mΩ typ. + dedicated SK pin enables precise gate control and <1% VGS error under 100A di/dt. |
| Optimized body diode recovery | trr = 89ns and Qrr = 300nC reduce switching losses and EMI in synchronous rectifiers without external Schottky assist. |
| Robust gate oxide | ±30V VGS rating withstands transient coupling and layout-induced overshoot during fast switching in noisy power environments. |
| Thermally enhanced D2Pak-7 | 0.43°C/W RθJC and dual-source pins support >300W continuous operation with standard 2oz copper and forced airflow. |
| Characterized avalanche SOA | 120mJ single-pulse rating validated per JEDEC JESD24-11; enables reliable operation in unclamped inductive fault conditions. |
Applications
| Motion Control Inverter Stage | High-Efficiency Server PSU Sync Rectifier |
|---|---|
Use Scenario: Three-phase motor drive inverter leg handling 40–80A peak current at 100kHz PWM frequency. IC Role / Device Role / Timing Role: High-side and low-side switching element; operates in hard-switched 60–100kHz range with active shoot-through protection. Use Value: Low Qg (71nC) and soft diode recovery minimize dead-time losses and voltage overshoot during commutation. |
Use Scenario: Secondary-side synchronous rectification in 12V/200A server VRM with multiphase interleaving. IC Role / Device Role / Timing Role: Low-side rectifying switch replacing Schottky diodes; driven by controller with adaptive gate timing. Use Value: 11.7mΩ RDS(on) cuts conduction loss by >40% vs. 40V MOSFETs; trr < 100ns prevents reverse recovery cross-conduction. |
| UPS Output H-Bridge | Industrial Hard-Switched DC-DC Converter |
Use Scenario: 1500VA online UPS output stage delivering clean 230VAC with battery backup and zero-transfer-time switchover. IC Role / Device Role / Timing Role: Full-bridge switching device in 10–20kHz inverter; handles bidirectional current and regenerative braking energy. Use Value: Fully characterized avalanche SOA (120mJ) absorbs inductive energy during grid-fail transitions without external clamping. |
Use Scenario: 48V-to-12V isolated DC-DC converter in telecom power shelf operating at 200kHz with >95% efficiency target. IC Role / Device Role / Timing Role: Primary-side switching transistor in forward or half-bridge topology; rated for 150V bus with safety margin. Use Value: 150V VDSS provides 50V headroom above 100V transients; 0.43°C/W RθJC sustains 61A at 100°C case temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current, high-voltage Power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STW75N150FD | 150V, 75A, RDS(on) = 16.5mΩ, Qg = 125nC, TO-247 package | Larger footprint, higher RDS(on), no Kelvin source; better suited for lower-frequency (<50kHz), higher-current parallel configurations | Choose when board space allows TO-247 and thermal interface favors bolt-down heatsinks over SMT mounting. |
| IXFH70N15X3 | 150V, 70A, RDS(on) = 13.5mΩ, Qg = 92nC, TO-247 package, trench-based | Higher gate charge than IRFS4321TRL7PP, no Kelvin source, faster trr (65ns) but lower EAS (85mJ) | Prefer where ultra-fast diode recovery dominates design priority and avalanche stress is minimal. |
Compared with STW75N150FD and IXFH70N15X3, IRFS4321TRL7PP delivers superior gate drive efficiency (71nC), integrated Kelvin source for precision timing, and higher avalanche ruggedness (120mJ), making it optimal for compact, high-frequency, high-reliability SMPS and motor drives.
Availability
IRFS4321TRL7PP is available at Aetrix Electronics and suitable for motion control inverters, uninterruptible power supplies, and high-frequency hard-switched DC-DC converters requiring stable component supply across extended production lifecycles.
Supply support for IRFS4321TRL7PP 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
Infineon Technologies is a global semiconductor leader specializing in power management, automotive, and industrial control solutions, with deep heritage in power MOSFET innovation through its acquisition of International Rectifier.
This device belongs to the HEXFET® Power MOSFET product line, engineered specifically for high-efficiency, high-reliability switching in demanding industrial and computing power applications where low conduction loss, fast switching, and robust avalanche behavior are critical.
FAQ
What is the maximum continuous drain current at 100°C case temperature?
The IRFS4321TRL7PP supports 61A continuous drain current at TC = 100°C with VGS = 10V, as specified in the Absolute Maximum Ratings table. This derating reflects thermal limitations of the D2Pak-7 package and ensures junction temperature remains below 175°C under steady-state conditions with appropriate PCB copper and airflow.
Does this MOSFET require a negative gate turn-off voltage?
No. The IRFS4321TRL7PP has a gate threshold voltage (VGS(th)) ranging from 3.0V to 5.0V and is fully enhanced at +10V; it does not require negative gate bias for reliable turn-off. However, applying –5V to –10V during off-state improves noise immunity and prevents spurious turn-on in high-dV/dt environments.
Can the Kelvin source (Pin 4) be left unconnected?
No. Leaving Pin 4 (SK) unconnected degrades switching performance and risks instability. It must be connected directly to the gate driver's source reference node-separate from the main power source trace-to eliminate common-source inductance effects on gate voltage waveform fidelity and timing accuracy.
Is the D2Pak-7Pin package RoHS-compliant and lead-free?
Yes. The IRFS4321TRL7PP is manufactured in a lead-free, RoHS-compliant D2Pak-7Pin package per Infineon's standard qualification. The device meets JEDEC J-STD-020 moisture sensitivity level MSL3 and supports standard reflow profiles with peak temperature up to 260°C for 10 seconds.
IRFS4321TRL7PP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- HEXFET®
- Package/Case:
- TO-263-7, D2PAK (6 Leads + Tab)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 150 V
- Current - Continuous Drain (Id) @ 25°C:
- 86A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 14.7mOhm @ 34A, 10V
- Vgs(th) (Max) @ Id:
- 5V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 110 nC @ 10 V
- Vgs (Max):
- ±30V
- Input Capacitance (Ciss) (Max) @ Vds:
- 4460 pF @ 50 V
- FET Feature:
- -
- Power Dissipation (Max):
- 350W (Tc)
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK-7
IRFS4321TRL7PP FAQ
1.How can I place an order for IRFS4321TRL7PP through Aetrix?
Please submit a Request for Quotation (RFQ) for IRFS4321TRL7PP 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 IRFS4321TRL7PP reliable?
The price and inventory of IRFS4321TRL7PP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRFS4321TRL7PP is usually 5 days.
3.What payment methods are accepted for IRFS4321TRL7PP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRFS4321TRL7PP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for IRFS4321TRL7PP?
IRFS4321TRL7PP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your IRFS4321TRL7PP 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 IRFS4321TRL7PP?
For technical support, including IRFS4321TRL7PP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRFS4321TRL7PP requirements.
6.How does Aetrix verify that IRFS4321TRL7PP is sourced from the original manufacturer or authorized distributors?
All IRFS4321TRL7PP 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 IRFS4321TRL7PP meets industry standards.
7.What is the process for return or replacement of IRFS4321TRL7PP?
All IRFS4321TRL7PP units undergo pre-shipment inspection (PSI). If there is an issue with IRFS4321TRL7PP, 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 IRFS4321TRL7PP part is unused and in its original packaging.
Return procedure for IRFS4321TRL7PP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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