My Inquiry
My Account
STMicroelectronics STE48NM50
- Part No.:
- STE48NM50
- Manufacturer:
- STMicroelectronics
- Category:
- FETs, MOSFETs
- Package:
- ISOTOP
- Datasheet:
-
STE48NM50.pdf
- Description:
- MOSFET N-CH 550V 48A ISOTOP
- Quantity:
- Payment:
- Shipping:
Inventory:6,201
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
STE48NM50 from STMicroelectronics is an N-channel 550 V, 48 A, 0.08 Ω RDS(on) MDmesh™ power MOSFET in ISOTOP package, designed for high-voltage switching in offline SMPS, PFC stages, and industrial motor drives where high dv/dt immunity and repetitive avalanche robustness are required.
For engineers reviewing the STE48NM50 datasheet, STE48NM50 pinout, STE48NM50 application, or STE48NM50 equivalent, key selection criteria include its 15 V/ns dv/dt rating, 810 mJ single-pulse avalanche energy, 0.28 °C/W Rthj-case, 48 A continuous drain current at 25°C, and ISOTOP thermal-mechanical interface compatibility with heatsink mounting.
Technical Context
This MOSFET employs ST's proprietary MDmesh™ technology-combining Multiple Drain process and PowerMESH™ horizontal layout-to achieve low conduction loss (RDS(on) ≤ 0.1 Ω) while maintaining high voltage blocking (VDSS = 550 V) and fast dynamic performance (Qg = 87 nC, tr = 35 ns).
It features 100% unclamped inductive avalanche testing at IAR = 15 A, supports high di/dt (≤ 400 A/µs) during recovery, and integrates a low-VSD (1.5 V @ 48 A) source-drain diode with trr = 520 ns at 25°C-enabling reliable hard-switching operation in bridge topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 550 V - supports 400 V AC mains-derived DC bus with margin for transient overvoltage |
| RDS(on) | 0.08 Ω (typ) - enables <1.8 W conduction loss at 48 A, reducing heatsink requirements |
| ID (TC = 25°C) | 48 A - rated continuous drain current under ideal heatsinking conditions |
| EAS | 810 mJ - ensures robustness against inductive switching stress without external snubbers |
| dv/dt | 15 V/ns - suppresses false turn-on in high-noise, high-frequency converters |
| Rthj-case | 0.28 °C/W - allows direct thermal coupling to heatsink with conductive grease for stable Tj ≤ 150°C |
| Qg | 87 nC - determines gate driver power requirement and switching speed trade-off |
Pinout & Package
The STE48NM50 uses the ISOTOP package-a through-hole, isolated-tab power package with 3 terminals (Drain, Gate, Source), optimized for high-voltage isolation (2500 VAC-RMS) and low thermal resistance to heatsink.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Drain (Tab) | High-side power node | Electrically isolated metal tab connected to drain; mounted directly to heatsink for thermal + electrical path |
| Gate | Control input | Low-impedance (1.7 Ω) terminal requiring <10 V drive; sensitive to ESD and ringing |
| Source | Reference return | Common return for gate drive and load current; defines local ground reference for control circuitry |
Key Features
| Feature | Design Value |
|---|---|
| MDmesh™ silicon architecture | Enables simultaneous low RDS(on) and high VDSS via optimized cell density and charge balance |
| 100% avalanche tested | Guarantees minimum 15 A repetitive avalanche current handling without degradation |
| Low Ciss/Coss ratio (3700 pF / 610 pF) | Improves zero-voltage switching (ZVS) capability in resonant topologies |
| Fast reverse recovery diode (trr = 520 ns) | Reduces switching losses and EMI in synchronous rectification and half-bridge freewheeling |
| Tight RDS(on) distribution (0.08–0.1 Ω) | Supports parallel operation with minimal current imbalance and derating |
Applications
| Server PSU Primary Switch | Industrial PFC Boost Stage |
|---|---|
Use Scenario: High-efficiency 3.3 kW telecom rectifier operating at 100 kHz with universal AC input. IC Role / Device Role / Timing Role: Main switch in continuous conduction mode (CCM) boost converter; handles full line-referred DC bus current. Use Value: 0.08 Ω RDS(on) and 810 mJ EAS reduce conduction loss and eliminate need for avalanche-rated snubbers. | Use Scenario: Active front-end PFC in 15 kW HVAC inverter with 99% efficiency target. IC Role / Device Role / Timing Role: High-side switch in interleaved boost stage; commutated at 30–60 kHz with soft recovery. Use Value: 15 V/ns dv/dt rating prevents spurious turn-on during fast bus transients; low Qg eases gate driver sizing. |
| Welding Inverter Output Stage | UPS Inverter Half-Bridge |
Use Scenario: 20 kHz DC-link inverter feeding IGBT gate drive transformer in arc welding power supply. IC Role / Device Role / Timing Role: Low-side switch in asymmetrical half-bridge; subjected to high di/dt and unclamped inductive loads. Use Value: 400 A/µs di/dt tolerance and 100% avalanche test ensure reliability under short-circuit fault conditions. | Use Scenario: Online double-conversion UPS delivering clean 230 V AC output from 400 V DC bus. IC Role / Device Role / Timing Role: Synchronous rectifier in H-bridge output stage; body diode conducts during dead-time. Use Value: 1.5 V VSD and 520 ns trr minimize conduction and recovery losses during bidirectional current flow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STW48NM50 | Same die, TO-247 package (non-isolated tab); Rthj-case = 0.35 °C/W | Requires insulating washer for heatsink mounting; higher thermal resistance limits peak power | Select when mechanical footprint allows TO-247 and isolation voltage < 2500 V suffices |
| IPP60R099C6 | 600 V CoolMOS™, RDS(on) = 0.099 Ω, Qg = 72 nC, no avalanche rating | Lacks guaranteed avalanche capability; optimized for ZVS, not hard-switched PFC | Select only in resonant topologies where EAS is not critical and gate drive loss dominates |
Compared with STW48NM50, STE48NM50 offers superior isolation and thermal interface but larger PCB footprint; versus IPP60R099C6, it trades slightly higher Qg for guaranteed avalanche ruggedness essential in industrial hard-switching.
Availability
STE48NM50 is available at Aetrix Electronics and suitable for server PSUs, industrial PFC modules, welding inverters, and UPS systems requiring stable component supply, long-lifecycle support, and traceable sourcing for high-reliability deployments.
Supply support for STE48NM50 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, designing and manufacturing analog, power, MCU, and sensor solutions for automotive, industrial, and consumer markets.
The MDmesh™ MOSFET product line targets high-efficiency, high-power-density switched-mode power supplies and motor control systems where low RDS(on), high dv/dt immunity, and avalanche ruggedness are non-negotiable.
FAQ
What is the maximum safe operating temperature for STE48NM50?
The absolute maximum junction temperature is 150°C. Operation must maintain Tj ≤ 150°C under worst-case ambient, power dissipation, and heatsink conditions. With Rthj-case = 0.28 °C/W and Rthc-sink = 0.05 °C/W, 450 W total dissipation is only sustainable with aggressive forced-air or liquid cooling.
Does STE48NM50 require a negative gate voltage for reliable turn-off?
No. The device is fully enhanced at VGS = 10 V and has a gate threshold voltage range of 3–5 V. A gate drive of 0 V is sufficient for turn-off; applying –5 V may improve noise immunity in high-dv/dt environments but is not required for functional operation.
Can STE48NM50 be paralleled with identical units?
Yes-its tight RDS(on) distribution (0.08–0.1 Ω) and positive temperature coefficient above 100°C enable stable current sharing. Use matched gate resistors (±5%), symmetrical PCB layout, and individual source inductance minimization to avoid dynamic imbalance.
Is the ISOTOP package RoHS-compliant and lead-free?
Yes. Per STMicroelectronics' official documentation (Rev. 2, March 2005), the ISOTOP package for STE48NM50 meets RoHS Directive 2002/95/EC and is manufactured with lead-free terminations and halogen-free molding compound.
STE48NM50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- MDmesh™
- Package/Case:
- ISOTOP
- Packaging:
- Tube
- Product Status:
- Active
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 550 V
- Current - Continuous Drain (Id) @ 25°C:
- 48A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 100mOhm @ 24A, 10V
- Vgs(th) (Max) @ Id:
- 5V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 117 nC @ 10 V
- Vgs (Max):
- ±30V
- Input Capacitance (Ciss) (Max) @ Vds:
- 3700 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 450W (Tc)
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- ISOTOP®
STE48NM50 FAQ
1.How can I place an order for STE48NM50 through Aetrix?
Please submit a Request for Quotation (RFQ) for STE48NM50 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 STE48NM50 reliable?
The price and inventory of STE48NM50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STE48NM50 is usually 5 days.
3.What payment methods are accepted for STE48NM50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STE48NM50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STE48NM50?
STE48NM50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STE48NM50 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 STE48NM50?
For technical support, including STE48NM50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STE48NM50 requirements.
6.How does Aetrix verify that STE48NM50 is sourced from the original manufacturer or authorized distributors?
All STE48NM50 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 STE48NM50 meets industry standards.
7.What is the process for return or replacement of STE48NM50?
All STE48NM50 units undergo pre-shipment inspection (PSI). If there is an issue with STE48NM50, 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 STE48NM50 part is unused and in its original packaging.
Return procedure for STE48NM50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STE48NM50 Tags
-
BSZ180P03NS3EGATMA1
Infineon Technologies
-
SIRA14DP-T1-GE3
Vishay Siliconix
-
AO4419
Alpha & Omega Semiconductor Inc.
-
SISA14BDN-T1-GE3
Vishay Siliconix
-
PSMN9R5-30YLC,115
Nexperia USA Inc.
-
BUK9Y21-40E,115
Nexperia USA Inc.
-
RTQ035N03HZGTR
Rohm Semiconductor
-
FDMS7680
onsemi
-
RQ3E180BNTB
Rohm Semiconductor
-
STL6N2VH5
STMicroelectronics
-
DMPH4029LFGQ-7
Diodes Incorporated
-
DMT6015LSS-13
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
