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Renesas FS50KM-2-AX#204
- Part No.:
- FS50KM-2-AX#204
- Manufacturer:
- Renesas
- Category:
- FETs, MOSFETs
- Package:
- -
- Datasheet:
-
FS50KM-2-AX#204.pdf
- Description:
- DISCRETE / POWER MOSFET
- Quantity:
- Payment:
- Shipping:
Inventory:3,425
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Product details
Overview
FS50KM-2-AX#204 from Renesas Electronics is a high-speed N-channel power MOSFET designed for switching applications in motor control, lamp drivers, solenoid interfaces, and DC-DC converters. It features 100 V VDSS, 50 A continuous drain current (ID), 39 mΩ typical rDS(ON) at 10 V gate drive, integrated fast-recovery body diode (105 ns), and 2000 V isolation voltage (Viso).
For engineers reviewing the FS50KM-2-AX#204 datasheet, FS50KM-2-AX#204 pinout, FS50KM-2-AX#204 application, or FS50KM-2-AX#204 equivalent, key selection criteria include its TO-220FN package with isolated case, 50 A/100 V rating, low on-resistance under 10 V gate drive, fast switching times (td(on) = 35 ns, tf = 80 ns), and suitability for industrial power switching where thermal performance and isolation are critical.
Technical Context
This device employs a planar vertical DMOS structure optimized for high-current, high-voltage switching with minimal conduction and switching losses. Its gate threshold voltage (2.0–4.0 V) ensures reliable turn-on with standard logic-level or 10 V gate drivers, while the 2300 pF input capacitance (Ciss) and 185 pF reverse transfer capacitance (Crss) support stable high-frequency operation up to several hundred kHz.
The integrated fast-recovery body diode enables synchronous rectification and freewheeling in inductive loads without external diode addition. Thermal resistance from channel to case is 4.17 °C/W, enabling 30 W continuous dissipation at Tc = 25°C - a design point validated for heatsink-mounted industrial power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 100 V - Withstands up to 100 V drain-source blocking voltage, suitable for 48 V and 72 V bus systems with margin. |
| ID (continuous) | 50 A - Supports high-current motor and solenoid loads without derating at Tc ≤ 25°C. |
| rDS(ON) (max) | 55 mΩ - Limits conduction loss to ≤1.38 V drop at 25 A, enabling >95% efficiency in 12–48 V switch-mode stages. |
| tr/tf | 86 ns / 80 ns - Enables clean switching at ≥200 kHz PWM frequencies with minimized overlap loss. |
| Viso | 2000 V AC - Provides reinforced isolation between drain and heatsink-mounted case, meeting IEC 60950 creepage/clearance requirements. |
| trr | 105 ns - Fast body diode recovery reduces switching noise and prevents cross-conduction in half-bridge topologies. |
| Rth(ch–c) | 4.17 °C/W - Allows direct mounting to aluminum heatsinks for passive or forced-air thermal management in enclosed industrial enclosures. |
Pinout & Package
FS50KM-2-AX#204 is housed in the TO-220FN (RENESAS code PRSS0003AB-A) package - a full-molded, isolated-tab variant of TO-220 with electrically insulated metal tab rated for 2000 V AC. The case serves as the Drain terminal and is thermally conductive but electrically isolated from internal die.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Lead) | Gate | High-impedance MOSFET control input; requires <50 Ω gate resistor to limit ringing and ensure 35 ns turn-on delay. |
| 2 (Tab) | Drain | High-voltage power output node; electrically isolated from case but thermally coupled - mounts directly to heatsink. |
| 3 (Lead) | Source | Power return path and reference for gate drive; connects to low-side shunt or controller ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| 10 V gate drive compatibility | Ensures full enhancement at standard industrial logic levels, eliminating need for level-shifting or charge-pump gate drivers. |
| Integrated fast-recovery body diode | Eliminates discrete anti-parallel diode in H-bridge or buck converter designs, reducing BOM count and PCB area by ~25 mm². |
| Isolated TO-220FN package | Enables direct heatsink mounting without insulating pads or hardware, cutting thermal resistance by up to 1.2 °C/W vs. standard TO-220. |
| Low Crss (185 pF) | Minimizes Miller effect during high dv/dt switching, improving noise immunity and gate drive stability in noisy industrial environments. |
| 50 A pulsed current rating (IDM) | Supports short-duration inrush currents in motor startup or solenoid pull-in without SOA violation. |
Applications
| Motor Control | Lamp Control |
|---|---|
Use Scenario: Driving brushed DC motors in industrial automation conveyors and valve actuators requiring 24–48 V supply and 30–50 A peak load current. IC Role / Device Role / Timing Role: High-side or low-side power switch in H-bridge or half-bridge configuration, handling PWM at 10–20 kHz with precise duty-cycle control. Use Value: Low rDS(ON) minimizes heat generation during continuous operation; fast switching reduces audible motor whine and improves torque linearity. | Use Scenario: Dimming and on/off control of high-intensity incandescent and halogen lamps in stage lighting and architectural systems. IC Role / Device Role / Timing Role: Zero-crossing–triggered or phase-angle controlled AC switch using external triac driver or DC-coupled DC lamp supply. Use Value: 100 V VDSS provides margin over 85–264 VAC rectified peaks; 200 A pulsed rating handles cold-filament inrush surges. |
| Solenoid Control | DC-DC Converters |
Use Scenario: Driving 24 V/48 V industrial solenoids in pneumatic/hydraulic control valves with 20–50 A inrush and 10–30 A hold current. IC Role / Device Role / Timing Role: Low-side switch with flyback diode clamping; operated in on/off mode with soft-start timing via gate resistor. Use Value: Integrated body diode provides safe energy recirculation during de-energization; 105 ns trr prevents voltage overshoot exceeding 100 V rating. | Use Scenario: Primary-side switch in non-isolated buck or buck-boost converters delivering 5–24 V at up to 30 A for embedded power supplies. IC Role / Device Role / Timing Role: Synchronous rectifier or main switching FET operating at 100–500 kHz with gate drive referenced to source. Use Value: 39 mΩ rDS(ON) at 10 V enables >94% efficiency at 25 A; low Ciss/Crss ratio supports stable gate drive with minimal loop area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel power MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STP55NF10 | Same VDSS (100 V), higher rDS(ON) (max 33 mΩ), no isolation rating, TO-220AB package (non-isolated tab). | Requires insulating pad and screw hardware for heatsink mounting; unsuitable where safety isolation is mandated. | Select when cost is prioritized over isolation and thermal interface simplicity. |
| IXFH50N10P | Same VDSS and ID, lower rDS(ON) (typ 22 mΩ), 1500 V isolation, TO-247 package - larger footprint and higher gate charge (120 nC vs. 75 nC). | Better conduction efficiency but slower switching (td(off) ≈ 140 ns); requires larger PCB real estate and more robust gate driver. | Select when lowest conduction loss dominates over switching speed and board space constraints. |
Compared with STP55NF10 and IXFH50N10P, FS50KM-2-AX#204 uniquely balances isolation integrity, thermal interface simplicity, and mid-range switching performance - making it optimal for space-constrained industrial controls where safety certification and heatsink integration are design priorities.
Availability
FS50KM-2-AX#204 is available at Aetrix Electronics and suitable for motor control, lamp dimming, solenoid actuation, and DC-DC converter designs requiring stable component supply, long-term industrial lifecycle support, and certified isolation compliance.
Supply support for FS50KM-2-AX#204 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
Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and infrastructure markets.
The FS50KM-2-AX#204 belongs to Renesas' high-speed power MOSFET product line, engineered specifically for rugged industrial switching applications demanding reliability, isolation, and thermal robustness in harsh environments.
FAQ
What is the maximum continuous drain current rating for FS50KM-2-AX#204?
The FS50KM-2-AX#204 has a maximum continuous drain current (ID) rating of 50 A at case temperature Tc = 25°C. This rating assumes proper heatsinking and derates linearly above 25°C per the specified thermal resistance of 4.17 °C/W. At Tc = 100°C, the usable ID drops to approximately 18 A to maintain safe channel temperature limits.
Does FS50KM-2-AX#204 require an external flyback diode in solenoid applications?
No, FS50KM-2-AX#204 does not require an external flyback diode in solenoid applications because it integrates a fast-recovery body diode with typical reverse recovery time (trr) of 105 ns. This diode safely recirculates inductive energy during turn-off, provided layout minimizes parasitic inductance and the applied voltage remains within the 100 V VDSS rating.
What is the gate threshold voltage range for FS50KM-2-AX#204?
The gate threshold voltage (VGS(th)) for FS50KM-2-AX#204 is specified from 2.0 V (minimum) to 4.0 V (maximum) at ID = 1 mA and VDS = 10 V. This range ensures consistent turn-on behavior across process variation and temperature, supporting reliable operation with 5 V or 10 V gate drive without risk of partial enhancement.
Can FS50KM-2-AX#204 be used in a half-bridge configuration?
Yes, FS50KM-2-AX#204 can be used in half-bridge configurations, particularly as the low-side switch. Its 100 V VDSS, fast switching (td(on) = 35 ns, tf = 80 ns), and low Crss (185 pF) support clean commutation. For high-side use, a floating gate driver capable of delivering 10 V referenced to the switching node is required, and shoot-through must be prevented via dead-time control.
What is the isolation voltage rating and test condition for FS50KM-2-AX#204?
The FS50KM-2-AX#204 has an isolation voltage (Viso) rating of 2000 V AC, tested for one minute between the drain-connected metal tab and all leads. This rating applies to the TO-220FN package's reinforced insulation system and is verified per industry-standard hipot testing protocols, confirming suitability for applications requiring basic or reinforced isolation per IEC 60950-1.
FS50KM-2-AX#204 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- FET Type:
- -
- Technology:
- -
- Drain to Source Voltage (Vdss):
- -
- Current - Continuous Drain (Id) @ 25°C:
- -
- Drive Voltage (Max Rds On, Min Rds On):
- -
- Rds On (Max) @ Id, Vgs:
- -
- Vgs(th) (Max) @ Id:
- -
- Gate Charge (Qg) (Max) @ Vgs:
- -
- Vgs (Max):
- -
- Input Capacitance (Ciss) (Max) @ Vds:
- -
- FET Feature:
- -
- Power Dissipation (Max):
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
FS50KM-2-AX#204 FAQ
1.How can I place an order for FS50KM-2-AX#204 through Aetrix?
Please submit a Request for Quotation (RFQ) for FS50KM-2-AX#204 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 FS50KM-2-AX#204 reliable?
The price and inventory of FS50KM-2-AX#204 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FS50KM-2-AX#204 is usually 5 days.
3.What payment methods are accepted for FS50KM-2-AX#204?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FS50KM-2-AX#204 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FS50KM-2-AX#204?
FS50KM-2-AX#204 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FS50KM-2-AX#204 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 FS50KM-2-AX#204?
For technical support, including FS50KM-2-AX#204 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FS50KM-2-AX#204 requirements.
6.How does Aetrix verify that FS50KM-2-AX#204 is sourced from the original manufacturer or authorized distributors?
All FS50KM-2-AX#204 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 FS50KM-2-AX#204 meets industry standards.
7.What is the process for return or replacement of FS50KM-2-AX#204?
All FS50KM-2-AX#204 units undergo pre-shipment inspection (PSI). If there is an issue with FS50KM-2-AX#204, 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 FS50KM-2-AX#204 part is unused and in its original packaging.
Return procedure for FS50KM-2-AX#204:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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