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Renesas 2SK2157C-T1-AZ
- Part No.:
- 2SK2157C-T1-AZ
- Manufacturer:
- Renesas
- Category:
- FETs, MOSFETs
- Package:
- TO-243AA
- Datasheet:
-
2SK2157C-T1-AZ.pdf
- Description:
- 2SK2157C-T1-AZ - N-CHANNEL MOS F
- Quantity:
- Payment:
- Shipping:
Inventory:34,552
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Product details
Overview
2SK2157C-T1-AZ from Renesas Electronics is an N-channel vertical MOSFET designed for low-voltage switching applications, featuring 30 V VDSS, 3.5 A DC drain current, and direct 2.5 V gate drive capability. Its RDS(on) of 91 mΩ at VGS = 2.5 V enables efficient operation in battery-powered load switches and portable power management circuits.
For engineers reviewing the 2SK2157C-T1-AZ datasheet, 2SK2157C-T1-AZ pinout, 2SK2157C-T1-AZ application, or 2SK2157C-T1-AZ equivalent, key selection criteria include low-threshold gate drive compatibility, SC-84 package thermal performance, RDS(on) vs. VGS behavior at sub-3 V logic levels, and body diode forward voltage for bidirectional current paths.
Technical Context
This device implements a vertical DMOS structure optimized for fast switching and low conduction loss in single-ended, low-side switching topologies. It supports pulsed drain currents up to 14 A with 1% duty cycle and exhibits gate charge (QG) of 4 nC at VGS = 4 V, enabling efficient drive from microcontroller GPIOs.
The integrated source-drain body diode has VF(S-D) = 0.89 V at IF = 3.5 A, and the gate protection diode provides ESD robustness-though external overvoltage protection remains required per datasheet guidance. Channel temperature rating is 150°C with derating starting at 25°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 30 V - Maximum blocking voltage for low-voltage DC-DC and load-switch applications |
| RDS(on) @ VGS = 2.5 V | 91 mΩ MAX - Enables direct drive from 2.5 V logic without level-shifting circuitry |
| ID(DC) | ±3.5 A - Continuous current handling suitable for USB power delivery and LED drivers |
| QG | 4 nC - Low gate charge reduces switching losses and simplifies gate driver design |
| VGS(off) | 0.5–1.5 V - Confirmed threshold range ensures reliable turn-on at 2.5 V supply |
| Ciss | 260 pF - Input capacitance impacts high-frequency gate drive impedance matching |
| VF(S-D) | 0.89 V - Forward voltage of internal body diode affects reverse-current path efficiency |
Pinout & Package
2SK2157C-T1-AZ uses the SC-84 (MP-2) surface-mount package: 3-pin, 1.6 mm × 2.9 mm footprint, 0.95 mm height, lead-free Sn-Bi plating (-AZ), marked "XR1". Thermal resistance θJA is derived from 16 cm² ceramic substrate test condition (2.0 W total dissipation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Gate (G) | Control input | Accepts 0–12 V gate-source bias; protected by integrated gate-source diode |
| Drain (D) | High-side switch node | Connected to load supply rail; rated for 30 V blocking and 14 A pulsed current |
| Source (S) | Power return / reference | Common return path for load current and gate drive reference; body diode anode |
Key Features
| Feature | Design Value |
|---|---|
| 2.5 V logic-compatible gate drive | Guaranteed turn-on with standard LDO or MCU I/O without level shifters |
| Low RDS(on) at low VGS | 91 mΩ max at 2.5 V enables <100 mW conduction loss at 3.5 A |
| Integrated gate protection diode | ESD safeguard per human-body model; external overvoltage clamping still required |
| SC-84 package thermal performance | 2.0 W dissipation on 16 cm² ceramic substrate supports compact PCB layout |
| Fast switching times | td(on)/tr/td(off)/tf = 28/65/98/80 ns enables >1 MHz PWM operation |
Applications
| USB Power Switching | Portable LED Driver |
|---|---|
Use Scenario: Controlling 5 V USB VBUS power delivery in smartphones and accessories with strict 2.5 V logic interface. IC Role / Device Role / Timing Role: Low-side load switch managing power path between battery/charger IC and USB port. Use Value: Eliminates need for external level shifter due to guaranteed 2.5 V turn-on and 91 mΩ RDS(on) minimizes voltage drop under 3 A load. |
Use Scenario: Driving white LEDs in handheld medical devices powered by single-cell Li-ion batteries (2.8–4.2 V). IC Role / Device Role / Timing Role: Constant-current sink switch modulated via PWM from ultra-low-voltage MCU. Use Value: Sub-1 V gate threshold allows full on-state control across entire battery discharge curve without auxiliary bias rails. |
| IoT Sensor Node Power Gating | Industrial Control I/O Module |
Use Scenario: Enabling/disabling RF transceivers and environmental sensors in battery-operated wireless sensor nodes. IC Role / Device Role / Timing Role: High-efficiency power gating switch controlled directly by 2.5 V sleep/wake controller output. Use Value: 10 μA IDSS leakage preserves battery life during deep-sleep mode while maintaining fast wake-up response. |
Use Scenario: Isolating 24 V field-side loads in programmable logic controller (PLC) digital output modules. IC Role / Device Role / Timing Role: Low-side switching element driven by isolated 2.5 V logic interface from microcontroller side. Use Value: 30 V VDSS and 150°C channel rating support industrial ambient conditions; SC-84 footprint enables dense I/O channel packing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar N-channel low-voltage switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ROHM RV1C002UN | RDS(on) = 75 mΩ @ VGS = 2.5 V; SC-88A package; higher Ciss (320 pF) | Better RDS(on) but slower switching due to higher input capacitance | Prefer when conduction loss dominates over switching loss; verify layout clearance for SC-88A vs. SC-84 |
| Toshiba SSF1301 | RDS(on) = 105 mΩ @ VGS = 2.5 V; same SC-84 package; lower QG (3.2 nC) | Higher on-resistance but faster turn-off (td(off) = 72 ns) and lower gate drive energy | Prefer when switching frequency exceeds 2 MHz or gate drive current is constrained |
Compared with 2SK2157C-T1-AZ, RV1C002UN offers lower conduction loss but requires more gate drive current, while SSF1301 trades higher RDS(on) for reduced switching energy-making each optimal under distinct thermal and frequency constraints.
Availability
2SK2157C-T1-AZ is available at Aetrix Electronics and suitable for USB power delivery, portable LED lighting, IoT sensor node power gating, and industrial digital I/O modules requiring stable component supply and Pb-free compliance.
Supply support for 2SK2157C-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 is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and consumer applications.
The 2SK2157C-T1-AZ belongs to Renesas' general-purpose low-voltage MOSFET product line, engineered specifically for direct 2.5 V logic-driven switching in space-constrained, battery-sensitive systems.
FAQ
What is the maximum continuous drain current rating for the 2SK2157C-T1-AZ?
The 2SK2157C-T1-AZ has a DC drain current rating of ±3.5 A at TA = 25°C with specified thermal conditions (16 cm² ceramic substrate). This rating assumes proper PCB copper area and ambient cooling; derating is required above 25°C ambient per the datasheet's derating curve. The 2SK2157C-T1-AZ must not exceed this limit in sustained operation to avoid thermal runaway.
Does the 2SK2157C-T1-AZ support true 2.5 V logic-level gate drive?
Yes-the 2SK2157C-T1-AZ guarantees turn-on with VGS ≥ 2.5 V, evidenced by RDS(on) = 91 mΩ MAX at VGS = 2.5 V and ID = 2.0 A. Its VGS(off) range (0.5–1.5 V) ensures full enhancement well below 2.5 V, making the 2SK2157C-T1-AZ compatible with standard 2.5 V CMOS outputs without external level shifting.
What is the purpose of the gate-source protection diode in the 2SK2157C-T1-AZ?
The integrated gate-source diode in the 2SK2157C-T1-AZ provides basic ESD protection per human-body model, as noted in the "Equivalent Circuit" diagram on page 6 of the datasheet. However, the 2SK2157C-T1-AZ datasheet explicitly states that external overvoltage protection remains mandatory if voltages exceeding ±12 V may occur-this diode is not a substitute for system-level transient suppression.
Can the 2SK2157C-T1-AZ be used in bidirectional current applications?
The 2SK2157C-T1-AZ contains an intrinsic body diode with VF(S-D) = 0.89 V at IF = 3.5 A, enabling conduction from source to drain when the MOSFET is off. While this supports limited reverse current paths (e.g., flyback in inductive loads), the 2SK2157C-T1-AZ is not characterized or rated for sustained bidirectional switching-its design and SOA are optimized for unidirectional low-side switching.
What is the thermal resistance (θJA) of the 2SK2157C-T1-AZ in its SC-84 package?
The 2SK2157C-T1-AZ does not specify a fixed θJA value because it depends entirely on PCB layout. The datasheet defines thermal performance under a standardized test condition: 2.0 W total power dissipation on a 16 cm² × 0.7 mm ceramic substrate. For accurate thermal design, users must simulate or measure θJA based on their actual copper pour, layer stack, and airflow-no generic θJA applies to the 2SK2157C-T1-AZ.
2SK2157C-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):
- 30 V
- Current - Continuous Drain (Id) @ 25°C:
- 3.5A (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 2.5V, 4.5V
- Rds On (Max) @ Id, Vgs:
- 63mOhm @ 2A, 4.5V
- Vgs(th) (Max) @ Id:
- 1.5V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- 4 nC @ 4 V
- Vgs (Max):
- ±12V
- Input Capacitance (Ciss) (Max) @ Vds:
- 260 pF @ 10 V
- FET Feature:
- -
- Power Dissipation (Max):
- 2W (Ta)
- Operating Temperature:
- 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- MP-2
2SK2157C-T1-AZ FAQ
1.How can I place an order for 2SK2157C-T1-AZ through Aetrix?
Please submit a Request for Quotation (RFQ) for 2SK2157C-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 2SK2157C-T1-AZ reliable?
The price and inventory of 2SK2157C-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 2SK2157C-T1-AZ is usually 5 days.
3.What payment methods are accepted for 2SK2157C-T1-AZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SK2157C-T1-AZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2SK2157C-T1-AZ?
2SK2157C-T1-AZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2SK2157C-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 2SK2157C-T1-AZ?
For technical support, including 2SK2157C-T1-AZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SK2157C-T1-AZ requirements.
6.How does Aetrix verify that 2SK2157C-T1-AZ is sourced from the original manufacturer or authorized distributors?
All 2SK2157C-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 2SK2157C-T1-AZ meets industry standards.
7.What is the process for return or replacement of 2SK2157C-T1-AZ?
All 2SK2157C-T1-AZ units undergo pre-shipment inspection (PSI). If there is an issue with 2SK2157C-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 2SK2157C-T1-AZ part is unused and in its original packaging.
Return procedure for 2SK2157C-T1-AZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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