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Renesas 2SK2857-T1-AZ
- Part No.:
- 2SK2857-T1-AZ
- Manufacturer:
- Renesas
- Category:
- FETs, MOSFETs
- Package:
- TO-243AA
- Datasheet:
-
2SK2857-T1-AZ.pdf
- Description:
- 2SK2857-T1-AZ - N-CHANNEL MOSFET
- Quantity:
- Payment:
- Shipping:
Inventory:14,621
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Product details
Overview
2SK2857-T1-AZ from Renesas Electronics is an N-channel enhancement-mode MOSFET designed for high-speed switching in low-voltage DC-DC converters and actuator drivers. It features RDS(on) ≤ 220 mΩ at VGS = 4 V, 1.5 A; td(off) = 52 ns; VDSS = 60 V; and operates up to Tch = 150 °C in a TO-236AB (SC-59) package.
For engineers reviewing the 2SK2857-T1-AZ datasheet, 2SK2857-T1-AZ pinout, 2SK2857-T1-AZ application, or 2SK2857-T1-AZ equivalent, key selection criteria include gate drive compatibility with 5 V logic, pulsed drain current capability of ±16 A, and thermal performance on ceramic substrates - critical for compact power stage designs.
Technical Context
This device uses a planar vertical DMOS structure optimized for fast switching and low conduction loss. Its gate threshold voltage (VGS(off) = 1.0–2.0 V) enables reliable turn-on with standard 5 V microcontroller outputs, while its low Ciss (265 pF) and QG (10.6 nC) support efficient high-frequency operation up to several hundred kHz.
The integrated source-drain diode exhibits trr = 49 ns and Qrr = 26.6 nC under specified conditions, making it suitable for synchronous rectification and freewheeling paths where reverse recovery behavior impacts efficiency and EMI. The device is rated for continuous ID(DC) = ±4 A with derating above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 60 V - Maximum blocking voltage for 24 V and 48 V bus applications without derating. |
| RDS(on)1 | 220 mΩ max @ VGS = 4 V, ID = 1.5 A - Enables direct 5 V MCU gate drive with low conduction loss in low-power switches. |
| td(off) | 52 ns - Supports switching frequencies >200 kHz in hard-switched topologies with minimal dead-time overhead. |
| QG | 10.6 nC - Low gate charge reduces driver power loss and simplifies gate driver selection for discrete logic-level drive. |
| Tch max | 150 °C - Allows operation in thermally constrained enclosures when mounted on 16 cm² ceramic board. |
| ID(pulse) | ±16 A @ PW ≤ 10 µs - Supports peak load handling in motor start-up or surge-limited power supplies. |
| Ciss | 265 pF - Predictable input capacitance aids stability analysis in gate-drive loop design. |
Pinout & Package
2SK2857-T1-AZ is housed in a TO-236AB (SC-59) surface-mount plastic package with gull-wing leads, measuring 4.5 mm × 2.5 mm × 1.6 mm (L × W × H), optimized for automated assembly and thermal transfer to PCB copper.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Source) | Power return path and internal diode cathode | Primary current return node; connects to ground or low-side reference; forms body diode anode for freewheeling. |
| 2 (Drain) | High-side power output terminal | Carries switched load current; requires adequate copper area for heat dissipation and low-inductance routing. |
| 3 (Gate) | Control input for channel modulation | High-impedance MOS control node; sensitive to ESD; requires series resistor (e.g., 10 Ω) to damp ringing and limit peak current. |
Key Features
| Feature | Design Value |
|---|---|
| 5 V logic-compatible gate drive | Guaranteed turn-on with standard 5 V microcontroller GPIO, eliminating level-shifting circuitry in low-voltage systems. |
| Low RDS(on) at 4 V VGS | Reduces conduction losses by >30% vs. typical 10 V-rated MOSFETs when driven from 5 V rails, improving efficiency in battery-powered devices. |
| Fast switching with low QG | Enables clean edge transitions and reduced switching loss in PWM-driven actuators and DC-DC controllers operating up to 500 kHz. |
| Integrated ESD protection diode | Internal gate-source Zener (±20 V rating) provides basic ESD immunity during handling and board assembly - external TVS still recommended in noisy environments. |
| Source-drain diode with controlled trr | 49 ns reverse recovery time supports use as freewheeling diode in non-synchronous buck converters without excessive voltage overshoot. |
Applications
| DC-DC Converter Switch | Small Motor Driver |
|---|---|
Use Scenario: Step-down conversion in portable medical monitors powered from 24 V battery packs. IC Role / Device Role / Timing Role: High-side synchronous switch in 300 kHz buck regulator controlling display backlight and sensor bias rails. Use Value: Low RDS(on) at 4 V ensures <150 mW conduction loss at 1.5 A, extending battery life; fast td(off) minimizes cross-conduction risk with complementary low-side FET. |
Use Scenario: Bidirectional drive for 12 V brushed DC motors in industrial HVAC damper actuators. IC Role / Device Role / Timing Role: One quadrant of H-bridge output stage, switching at ≤20 kHz with PWM duty-cycle control. Use Value: 16 A pulse rating handles motor stall currents; 60 V VDSS accommodates 12 V supply with inductive kick margin; TO-236AB footprint fits tight mechanical envelopes. |
| Solenoid Control | LED Current Switch |
Use Scenario: On/off control of 24 V fuel injector solenoids in test bench engine management units. IC Role / Device Role / Timing Role: Low-side switch activated by 5 V FPGA I/O with precise timing resolution for injection duration. Use Value: 52 ns td(off) enables sub-microsecond turn-off precision; low QG allows direct FPGA drive without buffer amplification. |
Use Scenario: Constant-current dimming of high-brightness white LEDs in architectural lighting modules. IC Role / Device Role / Timing Role: PWM-controlled current sink in linear+PWM hybrid LED driver topology. Use Value: RDS(on) stability over temperature ensures consistent current regulation; 150 °C channel rating supports sealed fixture operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel logic-level MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ROHM RTR020N05 | RDS(on) = 180 mΩ @ VGS = 4.5 V; smaller SOT-23 package; lower QG (6.5 nC); no integrated gate protection diode. | Better suited for space-constrained, ultra-low-power IoT nodes; lacks built-in ESD protection requiring external clamping. | Select when PCB area is critical and gate drive is clean; verify external ESD protection if used in factory automation environments. |
| ON Semiconductor NTMFS4C09NT1G | RDS(on) = 125 mΩ @ VGS = 4.5 V; PowerTrench® process; higher ID(pulse) = 22 A; SO-8FL package with exposed drain pad. | Higher thermal performance and current capability; requires thermal via layout; not drop-in compatible due to different footprint and pinout. | Choose for higher-power 24 V motor drives where thermal headroom and peak current margin outweigh layout redesign effort. |
Compared with RTR020N05 and NTMFS4C09NT1G, the 2SK2857-T1-AZ offers balanced trade-offs: moderate RDS(on), proven reliability in actuator interfaces, integrated gate protection, and industry-standard SC-59 packaging - making it ideal for cost-sensitive, medium-power industrial controls where layout reuse and robustness are prioritized.
Availability
2SK2857-T1-AZ is available at Aetrix Electronics and suitable for DC-DC converter switches, small motor drivers, solenoid control circuits, and LED current switching applications requiring stable component supply and long-term industrial availability.
Supply support for 2SK2857-T1-AZ 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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT markets.
The 2SK2857-T1-AZ belongs to Renesas' legacy discrete power MOSFET family, engineered specifically for high-reliability, low-voltage switching in industrial actuators and power management subsystems where 5 V logic compatibility and thermal resilience are essential.
FAQ
What is the maximum continuous drain current for the 2SK2857-T1-AZ at 75 °C ambient?
The 2SK2857-T1-AZ has a continuous drain current rating of ±4 A at TA = 25 °C, derated linearly to approximately ±2.7 A at TA = 75 °C when mounted on a 16 cm² ceramic board per datasheet Figure 1. This derating ensures safe channel temperature remains below 150 °C under steady-state operation.
Can the 2SK2857-T1-AZ be used with 3.3 V logic-level gate drive?
No - the 2SK2857-T1-AZ is not guaranteed to fully enhance at 3.3 V. Its gate threshold voltage range is 1.0–2.0 V, but RDS(on) is only specified at VGS = 4 V and 10 V. At 3.3 V, conduction loss increases significantly and may exceed thermal limits; 5 V drive is required for specified performance.
Does the 2SK2857-T1-AZ have a built-in body diode, and what are its characteristics?
Yes - the 2SK2857-T1-AZ includes an intrinsic source-drain body diode. Its forward voltage is 0.86 V at IF = 4 A and VGS = 0 V, with reverse recovery time trr = 49 ns and Qrr = 26.6 nC under specified test conditions. This diode supports freewheeling in inductive loads but is not optimized for high-frequency synchronous rectification.
What is the recommended PCB layout for thermal management of the 2SK2857-T1-AZ?
For optimal thermal performance, mount the 2SK2857-T1-AZ on a 16 cm² ceramic board (0.7 mm thick) as defined in the datasheet's power dissipation note. Use minimum 1.5 mm² copper pour connected to the drain pad via ≥4 thermal vias (0.3 mm diameter) to inner ground/power planes. Keep gate traces short and shielded from noise sources.
Is the 2SK2857-T1-AZ RoHS compliant and lead-free?
Yes - the 2SK2857-T1-AZ is RoHS compliant and lead-free, consistent with Renesas Electronics' environmental policy and EU Directive 2011/65/EU. The "-AZ" suffix denotes lead-free plating per Renesas' standard product marking convention, confirmed in official Renesas packaging documentation.
2SK2857-T1-AZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Bulk
- Product Status:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 60 V
- Current - Continuous Drain (Id) @ 25°C:
- 4A (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 4V, 10V
- Rds On (Max) @ Id, Vgs:
- 150mOhm @ 2.5A, 10V
- Vgs(th) (Max) @ Id:
- 2V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 10.6 nC @ 10 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 265 pF @ 10 V
- FET Feature:
- -
- Power Dissipation (Max):
- 2W (Ta)
- Operating Temperature:
- 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-62
2SK2857-T1-AZ FAQ
1.How can I place an order for 2SK2857-T1-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for 2SK2857-T1-AZ 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 2SK2857-T1-AZ reliable?
The price and inventory of 2SK2857-T1-AZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SK2857-T1-AZ is usually 5 days.
3.What payment methods are accepted for 2SK2857-T1-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SK2857-T1-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2SK2857-T1-AZ?
2SK2857-T1-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2SK2857-T1-AZ 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 2SK2857-T1-AZ?
For technical support, including 2SK2857-T1-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SK2857-T1-AZ requirements.
6.How does Aetrix verify that 2SK2857-T1-AZ is sourced from the original manufacturer or authorized distributors?
All 2SK2857-T1-AZ 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 2SK2857-T1-AZ meets industry standards.
7.What is the process for return or replacement of 2SK2857-T1-AZ?
All 2SK2857-T1-AZ units undergo pre-shipment inspection (PSI). If there is an issue with 2SK2857-T1-AZ, 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 2SK2857-T1-AZ part is unused and in its original packaging.
Return procedure for 2SK2857-T1-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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