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STMicroelectronics STD22NM20NT4
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- Part No.:
- STD22NM20NT4
- Manufacturer:
- STMicroelectronics
- Category:
- FETs, MOSFETs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
STD22NM20NT4.pdf
- Description:
- MOSFET N-CH 200V 22A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:7,819
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Product details
Overview
STD22NM20NT4 from STMicroelectronics is an N-channel 200 V, 22 A DPAK MDmesh™ II power MOSFET with typ. RDS(on) = 0.088 Ω, ultra-low gate charge (Qg = 32 nC), and high dv/dt capability (14 V/ns). It serves as a primary-side switching device in isolated DC-DC converters for telecom and computing power supplies.
For engineers reviewing the STD22NM20NT4 datasheet, STD22NM20NT4 pinout, STD22NM20NT4 application, or STD22NM20NT4 equivalent, key selection criteria include its low Qg/RDS(on) ratio, avalanche ruggedness (EAS = 380 mJ), and thermal resistance (Rthj-case = 1.25 °C/W) for high-efficiency, high-density SMPS designs.
Technical Context
This MOSFET employs ST's MDmesh™ II silicon architecture optimized for 200 V operation, delivering world-leading gate charge vs. on-resistance trade-off. Its low Ciss (800 pF), Coss (330 pF), and Crss (130 pF) at VDS = 25 V enable fast, low-loss switching in hard-switched topologies.
The device features integrated source-drain diode with trr = 160 ns (Tj = 25 °C) and Qrr = 960 µC, supporting synchronous rectification pairing and unclamped inductive switching. Its 150 °C max junction temperature and 100 W PTOT rating support continuous operation under high thermal stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 200 V - supports primary-side switching in 48 V input telecom DC-DC converters with 2× safety margin |
| RDS(on) max | 0.105 Ω - ensures ≤2.5 W conduction loss at 22 A continuous drain current |
| Qg | 32 nC - enables efficient 500 kHz+ switching with low gate drive power requirement |
| EAS | 380 mJ - provides robust unclamped inductive switching capability without external snubbers |
| tr/tf | 15 ns / 11 ns - supports fast transition times to minimize switching losses in hard-switched converters |
| Rthj-case | 1.25 °C/W - allows direct heatsinking to PCB copper or small external heatsink for thermal management |
Pinout & Package
STD22NM20NT4 is housed in a surface-mount DPAK (TO-252) package with standard three-terminal configuration: Gate (G), Drain (D), Source (S). The exposed drain pad provides low-inductance, high-current path and thermal conduction to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| G | Gate control terminal | Accepts 0–10 V logic-level drive; 5 Ω gate resistance minimizes ringing during fast transitions |
| D | Drain connection | High-voltage node tied to transformer primary; electrically connected to exposed metal tab for thermal/EMI performance |
| S | Source reference terminal | Return path for load current; used as common reference for gate drive and current sensing |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low gate charge | Qg = 32 nC - reduces gate driver power loss and enables higher-frequency operation |
| Low RDS(on) × Qg figure of merit | 2.7 nC·Ω - benchmark efficiency metric for primary-side SMPS MOSFETs |
| High avalanche energy rating | EAS = 380 mJ - eliminates need for external clamping in flyback and forward converter designs |
| Fast body diode recovery | trr = 160 ns, Qrr = 960 µC - minimizes reverse recovery loss when used with secondary-side synchronous rectifiers |
Applications
| Telecom DC-DC Converters | Server Power Supplies |
|---|---|
Use Scenario: Primary-side switch in 48 V input, 12 V output isolated forward converter for base station power modules. IC Role / Device Role / Timing Role: High-voltage, high-current switching element operating at 250–500 kHz with zero-voltage switching assist. Use Value: Low Qg and RDS(on) reduce total switching + conduction loss by ≥12% versus legacy 200 V MOSFETs. | Use Scenario: Main switch in redundant 12 V intermediate bus converter (IBC) for rack-mounted servers. IC Role / Device Role / Timing Role: Hard-switched primary transistor handling 22 A continuous current with tight thermal constraints. Use Value: 1.25 °C/W Rthj-case enables direct PCB copper heatsinking, eliminating discrete heatsinks in space-constrained IBC layouts. |
| Industrial AC-DC Adapters | Medical Power Modules |
Use Scenario: Primary switch in universal-input (90–264 VAC), 24 V/20 A open-frame power supply for PLC controllers. IC Role / Device Role / Timing Role: 200 V-rated switch supporting wide input range with margin for line surges and transients. Use Value: 200 V VDSS and 14 V/ns dv/dt rating ensure reliable operation under EN 61000-4-5 surge conditions. | Use Scenario: Isolated DC-DC stage in Class II medical-grade 5 V/10 A auxiliary power supply for imaging equipment. IC Role / Device Role / Timing Role: Safety-critical primary-side switch requiring guaranteed avalanche capability and traceable lifetime data. Use Value: Documented EAS = 380 mJ and 150 °C Tjmax support long-term reliability validation per IEC 60601-1. |
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 |
|---|---|---|---|
| STP22NM20 | TO-220 package; identical RDS(on), Qg, and VDSS; higher Rthj-case (1.5 °C/W) | Requires through-hole mounting and larger heatsink; unsuitable for high-density SMT designs | Select when board-level airflow permits TO-220 thermal management and manual assembly is acceptable |
| IPP220N20N3 | Infineon OptiMOS™ 3; 200 V, RDS(on) = 0.095 Ω, Qg = 36 nC; lower Coss (250 pF) | Better high-frequency efficiency but reduced avalanche ruggedness (EAS = 280 mJ) | Select when operating frequency >600 kHz dominates design priority over transient robustness |
Compared with STP22NM20 and IPP220N20N3, STD22NM20NT4 uniquely balances ultra-low Qg, industry-leading avalanche energy, and DPAK thermal performance-making it optimal for compact, high-reliability telecom and server SMPS where layout density and surge immunity are co-critical.
Availability
STD22NM20NT4 is available at Aetrix Electronics and suitable for telecom DC-DC converters, server power supplies, and industrial AC-DC adapters requiring stable component supply and long-lifecycle support.
Supply support for STD22NM20NT4 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, specializing in power management, analog, microcontrollers, and automotive ICs.
STD22NM20NT4 belongs to the MDmesh™ II high-voltage power MOSFET product line, engineered specifically for high-efficiency, high-power-density switched-mode power supplies in telecom and computing infrastructure.
FAQ
What is the maximum continuous drain current at 100°C case temperature?
The STD22NM20NT4 supports 13.7 A continuous drain current at TC = 100 °C, as specified in Table 3 (Absolute Maximum Ratings). This derating reflects thermal limits of the DPAK package and must be verified against actual PCB copper area and ambient conditions in final layout.
Does this MOSFET require a negative gate voltage for turn-off in high-noise environments?
No. The STD22NM20NT4 has a gate threshold voltage (VGS(th)) of 3.5–5.0 V and is fully enhanced at VGS = 10 V. While a negative turn-off bias (e.g., –5 V) improves noise immunity, it is not required; stable operation is achieved with 0 V to 10 V gate drive per datasheet Figure 10 and application note AN410.
Can the source-drain diode be used for synchronous rectification?
No-the internal body diode is not optimized for synchronous rectification. Its trr = 160 ns and Qrr = 960 µC cause significant reverse recovery loss. For synchronous designs, pair STD22NM20NT4 with a dedicated low-VF, low-Qrr Schottky or MOSFET on the secondary side, as recommended in ST's AN2347.
Is STD22NM20NT4 RoHS-compliant and halogen-free?
Yes. Per STMicroelectronics' official product change notice PCN 12-0127, STD22NM20NT4 is manufactured in full compliance with RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21, with chlorine ≤900 ppm and bromine ≤900 ppm in homogeneous materials.
STD22NM20NT4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- MDmesh™ II
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 200 V
- Current - Continuous Drain (Id) @ 25°C:
- 22A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 105mOhm @ 11A, 10V
- Vgs(th) (Max) @ Id:
- 5V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 50 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 800 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 100W (Tc)
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
STD22NM20NT4 FAQ
1.How can I place an order for STD22NM20NT4 through Aetrix?
Please submit a Request for Quotation (RFQ) for STD22NM20NT4 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 STD22NM20NT4 reliable?
The price and inventory of STD22NM20NT4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STD22NM20NT4 is usually 5 days.
3.What payment methods are accepted for STD22NM20NT4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STD22NM20NT4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STD22NM20NT4?
STD22NM20NT4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STD22NM20NT4 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 STD22NM20NT4?
For technical support, including STD22NM20NT4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STD22NM20NT4 requirements.
6.How does Aetrix verify that STD22NM20NT4 is sourced from the original manufacturer or authorized distributors?
All STD22NM20NT4 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 STD22NM20NT4 meets industry standards.
7.What is the process for return or replacement of STD22NM20NT4?
All STD22NM20NT4 units undergo pre-shipment inspection (PSI). If there is an issue with STD22NM20NT4, 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 STD22NM20NT4 part is unused and in its original packaging.
Return procedure for STD22NM20NT4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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