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Renesas 2SK3306B-S17-AY
- Part No.:
- 2SK3306B-S17-AY
- Manufacturer:
- Renesas
- Category:
- FETs, MOSFETs
- Package:
- -
- Datasheet:
-
2SK3306B-S17-AY.pdf
- Description:
- N-CHANNEL POWER MOSFET
- Quantity:
- Payment:
- Shipping:
Inventory:8,000
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Product details
Overview
2SK3306B-S17-AY from Renesas Electronics is an N-channel power MOSFET designed for high-voltage switching applications including AC adapters and offline switching power supplies. It features a 500 V drain-source breakdown voltage, 1.5 Ω maximum RDS(on) at VGS = 10 V and ID = 2.5 A, 13 nC typical total gate charge, ±30 V gate-source voltage rating, and isolated TO-220 (MP-45F) package with avalanche capability (EAS = 125 mJ).
For engineers reviewing the 2SK3306B-S17-AY datasheet, 2SK3306B-S17-AY pinout, 2SK3306B-S17-AY application, or 2SK3306B-S17-AY equivalent, key selection criteria include its 500 V VDSS, low QG for fast switching, robust avalanche energy rating, and isolated TO-220 thermal performance in high-reliability industrial power stages.
Technical Context
This device operates as a unidirectional high-side or low-side switch in hard-switched flyback, forward, and resonant converter topologies. Its gate threshold voltage range (2.5–3.5 V) ensures reliable turn-on with standard 10 V gate drivers, while the 1.5 Ω RDS(on) supports continuous 5 A DC drain current at TC = 25°C with 35 W power dissipation capability.
The integrated body diode exhibits 0.9 V forward voltage at 5 A and 240 ns reverse recovery time under specified conditions, enabling synchronous rectification support in certain configurations. Its Ciss = 730 pF and Crss = 6 pF values indicate low Miller effect, supporting stable high-frequency operation up to several hundred kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDSS | 500 V - Supports primary-side switching in universal-input (85–265 VAC) offline SMPS without derating. |
| RDS(on) max | 1.5 Ω @ VGS = 10 V, ID = 2.5 A - Enables <1.9 W conduction loss at 5 A, suitable for 30–60 W power stages. |
| QG typ | 13 nC @ VDD = 400 V - Reduces gate drive power and enables efficient 200–500 kHz switching with standard MOSFET drivers. |
| EAS | 125 mJ - Allows single-pulse inductive avalanche handling in non-clamped topologies like flyback snubberless designs. |
| tr/tf | 7.5 ns / 6.5 ns @ VDD = 150 V - Supports fast edge rates with minimal switching loss and EMI generation. |
| Tch max | 150 °C - Compatible with standard heatsink solutions using thermal resistance ≤ 3.57 °C/W (case-to-ambient). |
| Package | Isolated TO-220 (MP-45F) - Provides electrical isolation between drain tab and mounting surface for safe high-side layout. |
Pinout & Package
2SK3306B-S17-AY uses the isolated TO-220 (MP-45F) package with three terminals: Gate (pin 1), Drain (pin 2, metal tab), and Source (pin 3). The drain tab is electrically isolated from the mounting surface, enabling direct heatsink attachment without insulating hardware.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Gate) | Control electrode | Receives 10 V logic-level signal to fully enhance channel; ±30 V absolute max rating prevents gate oxide damage. |
| 2 (Drain) | High-voltage power terminal | Connected to primary winding or bus rail; isolated tab allows direct heatsinking without dielectric pad in high-voltage layouts. |
| 3 (Source) | Reference/return path | Serves as common return for gate drive and current sensing; tied to ground or floating node depending on topology. |
Key Features
| Feature | Design Value |
|---|---|
| Low gate charge | 13 nC typical enables efficient high-frequency switching with minimal driver stress and reduced gate loss. |
| Avalanche-rated design | 125 mJ single-pulse EAS permits operation in unclamped inductive circuits without external snubbers. |
| Isolated TO-220 package | Drain tab isolation eliminates need for insulating washers, simplifying mechanical assembly and improving thermal reliability. |
| Low RDS(on) at 10 V drive | 1.5 Ω max ensures low conduction loss in cost-sensitive 10 V gate-drive systems without requiring bootstrap or level-shift circuits. |
| Fast switching times | Turn-on delay 13 ns and fall time 6.5 ns reduce transition losses and support compact magnetics in space-constrained adapters. |
Applications
| AC Adapter Primary Switch | Industrial Flyback Converter |
|---|---|
|
Use Scenario: 36 W universal-input AC adapter for laptop accessories operating from 85–265 VAC input. IC Role / Device Role / Timing Role: Primary-side high-voltage switch in discontinuous conduction mode (DCM) flyback topology. Use Value: 500 V VDSS provides 2× safety margin over peak line voltage (375 V), while 13 nC QG enables clean 65 kHz switching with minimal EMI. |
Use Scenario: 48 V/1 A isolated output power supply for factory automation controllers with wide ambient temperature range. IC Role / Device Role / Timing Role: Main switching element in fixed-frequency flyback converter with optocoupler feedback. Use Value: Isolated TO-220 package allows direct heatsink mounting on metal chassis, and 125 mJ EAS accommodates load dump transients without failure. |
| LED Driver Power Stage | Offline SMPS Auxiliary Supply |
|
Use Scenario: Constant-current LED driver for commercial signage with 24 V output and 2 A load. IC Role / Device Role / Timing Role: Low-side switch controlling primary current in quasi-resonant buck-boost derived topology. Use Value: 1.5 Ω RDS(on) limits conduction loss to <1.5 W at full load, enabling passive cooling in sealed enclosures. |
Use Scenario: 12 V/0.5 A auxiliary bias supply powering PWM controller and gate drivers in a 500 W main PSU. IC Role / Device Role / Timing Role: Self-oscillating flyback switch providing isolated auxiliary power independent of main control loop. Use Value: Gate threshold of 2.5–3.5 V ensures reliable start-up from residual VCC charge, and 0.9 V body diode VF reduces no-load losses. |
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 |
|---|---|---|---|
| STP5NK50ZFP | 500 V, 0.95 Ω RDS(on), 22 nC QG, TO-220FP (non-isolated) | Higher conduction efficiency but requires insulating pad; slower switching increases loss above 200 kHz. | Prefer when lower RDS(on) dominates over switching speed and isolation is managed externally. |
| FQP5N50CTU | 500 V, 1.4 Ω RDS(on), 16 nC QG, TO-220 (non-isolated) | Similar RDS(on) and QG, but drain tab not isolated - mandates insulator kit and increases thermal resistance by ~1.2 °C/W. | Acceptable where board layout allows insulated mounting and thermal budget permits higher junction rise. |
Compared with STP5NK50ZFP and FQP5N50CTU, the 2SK3306B-S17-AY offers unique drain-tab isolation in TO-220 form factor, enabling simpler thermal design and enhanced safety in high-voltage primary-side layouts without compromising switching speed or avalanche ruggedness.
Availability
2SK3306B-S17-AY is available at Aetrix Electronics and suitable for AC adapters, industrial flyback converters, and offline auxiliary power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant lead-free plating.
Supply support for 2SK3306B-S17-AY 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 industrial, automotive, and consumer applications.
The 2SK3306B belongs to Renesas' legacy high-voltage discrete MOSFET product line, engineered specifically for reliability-critical offline power conversion in standard-grade industrial and consumer equipment.
FAQ
What is the maximum continuous drain current rating for the 2SK3306B-S17-AY?
The 2SK3306B-S17-AY has a DC drain current rating of ±5 A at case temperature TC = 25°C. At elevated temperatures, this must be derated per the datasheet's power dissipation curve - for example, it supports ~3.5 A at TC = 75°C. This rating assumes proper heatsinking and adherence to the 35 W total power dissipation limit at 25°C case temperature. The 2SK3306B-S17-AY is not rated for continuous 5 A operation without thermal management.
Does the 2SK3306B-S17-AY have avalanche capability, and how is it specified?
Yes, the 2SK3306B-S17-AY is fully rated for single-pulse avalanche operation with IAS = 5.0 A and EAS = 125 mJ under defined test conditions (VDD = 150 V, RG = 25 Ω, starting Tch = 25°C). This specification confirms ruggedness in unclamped inductive switching events, such as transformer leakage energy release in flyback converters. The 2SK3306B-S17-AY datasheet explicitly lists these parameters in Absolute Maximum Ratings, confirming validated avalanche performance.
What is the gate threshold voltage range for the 2SK3306B-S17-AY, and why does it matter?
The 2SK3306B-S17-AY has a gate threshold voltage (VGS(off)) range of 2.5 V to 3.5 V at ID = 1 mA and VDS = 10 V. This defines the minimum gate voltage needed to begin channel conduction. A well-defined, narrow threshold ensures consistent turn-on behavior across units and temperature, critical for reliable operation with 5 V or 10 V gate drivers. The 2SK3306B-S17-AY's typical VGS(th) supports robust enhancement using standard logic-level drivers without risk of partial turn-on.
Can the 2SK3306B-S17-AY be used in synchronous rectification topologies?
The 2SK3306B-S17-AY is not optimized for synchronous rectification due to its relatively high RDS(on) (1.5 Ω) and body diode forward voltage (0.9 V at 5 A), which exceed requirements for secondary-side low-loss switching. Its design targets primary-side high-voltage switching, not low-VDS bidirectional conduction. While the body diode is functional, the 2SK3306B-S17-AY lacks the low on-resistance and fast reverse recovery characteristics required for efficient SR implementation.
What is the thermal resistance from channel to ambient for the 2SK3306B-S17-AY in standard mounting?
The 2SK3306B-S17-AY does not specify a fixed Rth(ch-A) because it depends entirely on heatsink design and mounting conditions. However, its transient thermal resistance Rth(ch-C) is 3.57 °C/W (channel-to-case), and the isolated TO-220 package allows direct thermal coupling to heatsinks. With a typical 10 cm² aluminum heatsink and thermal grease, practical Rth(ch-A) falls between 15–25 °C/W. The 2SK3306B-S17-AY datasheet provides transient curves to model dynamic thermal behavior under pulsed loads.
2SK3306B-S17-AY 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:
- -
2SK3306B-S17-AY FAQ
1.How can I place an order for 2SK3306B-S17-AY through Aetrix?
Please submit a Request for Quotation (RFQ) for 2SK3306B-S17-AY 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 2SK3306B-S17-AY reliable?
The price and inventory of 2SK3306B-S17-AY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2SK3306B-S17-AY is usually 5 days.
3.What payment methods are accepted for 2SK3306B-S17-AY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2SK3306B-S17-AY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 2SK3306B-S17-AY?
2SK3306B-S17-AY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 2SK3306B-S17-AY 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 2SK3306B-S17-AY?
For technical support, including 2SK3306B-S17-AY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2SK3306B-S17-AY requirements.
6.How does Aetrix verify that 2SK3306B-S17-AY is sourced from the original manufacturer or authorized distributors?
All 2SK3306B-S17-AY 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 2SK3306B-S17-AY meets industry standards.
7.What is the process for return or replacement of 2SK3306B-S17-AY?
All 2SK3306B-S17-AY units undergo pre-shipment inspection (PSI). If there is an issue with 2SK3306B-S17-AY, 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 2SK3306B-S17-AY part is unused and in its original packaging.
Return procedure for 2SK3306B-S17-AY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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