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Vishay Siliconix SI4465ADY-T1-E3
- Part No.:
- SI4465ADY-T1-E3
- Manufacturer:
- Vishay Siliconix
- Category:
- FETs, MOSFETs
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI4465ADY-T1-E3.pdf
- Description:
- MOSFET P-CH 8V 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,526
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Product details
Overview
SI4465ADY-T1-E3 from Vishay Siliconix is a P-channel TrenchFET® MOSFET rated for -8 V drain-source voltage, with RDS(on) = 0.009 Ω at VGS = -4.5 V and continuous drain current of -13.7 A at TA = 25 °C. It serves as a low-side load switch in compact DC-DC converter output stages and battery protection circuits.
For engineers reviewing the SI4465ADY-T1-E3 datasheet, SI4465ADY-T1-E3 pinout, SI4465ADY-T1-E3 application, or SI4465ADY-T1-E3 equivalent, key selection criteria include its 1.8 V gate threshold compatibility with low-voltage logic, SO-8 package thermal performance, and verified 55 nC total gate charge for efficient switching in high-frequency synchronous rectification.
Technical Context
This device uses trench-gate silicon technology to achieve low on-resistance and fast switching dynamics. Its negative gate threshold (VGS(th) = -0.45 to -1.0 V) enables direct drive from 1.8 V microcontroller GPIOs without level shifting.
The SO-8 package provides a junction-to-foot thermal resistance of 15 °C/W (typical), supporting power dissipation up to 6.5 W at TC = 25 °C. Body diode reverse recovery charge (Qrr = 81–125 nC) and trr = 85–130 ns are specified for synchronous rectifier operation with controlled commutation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | -8 V - Maximum blocking voltage for low-voltage rail switching |
| RDS(on) @ VGS = -4.5 V | 0.009 Ω - Enables <100 mW conduction loss at 10 A load current |
| ID (continuous, TA = 25 °C) | -13.7 A - Supports high-current load switching in space-constrained PCBs |
| Qg (total gate charge) | 55 nC - Determines gate driver power requirement and switching speed in PWM control |
| VGS(th) | -0.45 to -1.0 V - Ensures reliable turn-on with 1.8 V logic-level signals |
| TJ range | -55 to +150 °C - Qualified for industrial temperature operation without derating |
| RthJA (steady-state) | 67 °C/W - Defines thermal limit for natural-convection cooling on standard FR4 |
Pinout & Package
SO-8 (narrow-body, MS-012 compliant) surface-mount package with exposed drain pad for thermal enhancement. Pin 1 marked by notch or dot; leads are gull-wing, 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Gate | Control input; accepts logic-level negative voltage for turn-on |
| 2, 3, 4, 5 | Source | Common source node; tied to system ground or negative rail in low-side configuration |
| 6, 7, 8, Tab | Drain | Main current path output; thermally connected to PCB copper pour via exposed pad |
Key Features
| Feature | Design Value |
|---|---|
| 1.8 V gate-rated operation | Enables direct interface with 1.8 V I/O domains without external level shifters |
| 100 % Rg tested | Guarantees gate resistance between 2.5–3.8 Ω for predictable turn-on timing |
| TrenchFET® architecture | Delivers lower RDS(on) per die area than planar MOSFETs, reducing footprint |
| Halogen-free construction | Complies with IEC 61249-2-21 for environmentally regulated end equipment |
Applications
| Battery Protection Circuit | Synchronous Buck Converter Output Stage |
|---|---|
Use Scenario: Reverse-current blocking and over-discharge cutoff in single-cell Li-ion packs. IC Role / Device Role / Timing Role: Low-side N-channel replacement used as high-side switch via charge pump; configured as protected load disconnect. Use Value: RDS(on) ≤ 0.011 Ω at VGS = -2.5 V ensures <150 mW loss during full-load discharge, extending runtime. | Use Scenario: High-efficiency synchronous rectification in 3.3 V or 5 V point-of-load converters. IC Role / Device Role / Timing Role: Secondary-side switch replacing Schottky diode; driven complementary to high-side FET. Use Value: Qrr = 81–125 nC and trr = 85–130 ns minimize dead-time losses and voltage spikes during body-diode commutation. |
| USB Power Delivery Load Switch | Industrial PLC Digital Output Module |
Use Scenario: Inrush-limited hot-swap control for USB-C downstream ports with programmable current limiting. IC Role / Device Role / Timing Role: Low-side power switch with gate-controlled slew rate; integrated into discrete load-switch design. Use Value: VGS(th) specification ensures turn-on within 1.8 V logic margin, enabling direct MCU GPIO control without bias networks. | Use Scenario: 24 V DC solid-state relay replacement in DIN-rail mounted control modules. IC Role / Device Role / Timing Role: High-reliability load switch driving solenoids, indicators, or small actuators. Use Value: TJ = -55 to +150 °C rating and 6.5 W PD at TC = 25 °C support continuous operation in unventilated enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar P-channel MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IRLML6344TRPBF | RDS(on) = 0.022 Ω @ VGS = -4.5 V; higher on-resistance, same SO-8 package | Lower current capability (-4.3 A vs. -13.7 A); suited for sub-5 A loads | Select when lower gate charge (22 nC) is prioritized over conduction loss |
| DMG2305UVT-7 | RDS(on) = 0.045 Ω @ VGS = -4.5 V; SOT-23 package, not SO-8 | Smaller footprint but limited to 4.2 A continuous; unsuitable for high-power thermal management | Choose only for space-constrained, low-current designs where SO-8 layout is unavailable |
Compared with IRLML6344TRPBF and DMG2305UVT-7, the SI4465ADY-T1-E3 delivers superior current handling and thermal performance in SO-8, making it optimal for applications requiring >10 A load switching with minimal board area and no heatsink.
Availability
SI4465ADY-T1-E3 is available at Aetrix Electronics and suitable for battery protection circuits, synchronous buck converters, USB power delivery systems, and industrial digital output modules requiring stable component supply and lead-free compliance.
Supply support for SI4465ADY-T1-E3 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
Vishay Siliconix is a global leader in discrete semiconductors, specializing in MOSFETs, diodes, optoelectronics, and passive components with emphasis on power efficiency and reliability.
The Si4465ADY product line targets low-voltage, high-current switching applications where logic-level gate drive, low RDS(on), and robust thermal performance are critical-especially in portable and industrial power management.
FAQ
What is the maximum continuous drain current for SI4465ADY-T1-E3 at 70 °C ambient temperature?
The SI4465ADY-T1-E3 supports -11 A continuous drain current at TA = 70 °C, as specified in the Absolute Maximum Ratings table. This derating reflects thermal limits of the SO-8 package under natural convection; using a 1" × 1" FR4 copper pour increases current capacity to -16 A at TC = 70 °C.
Does SI4465ADY-T1-E3 require a gate driver IC for operation with a 1.8 V microcontroller?
No, the SI4465ADY-T1-E3 does not require an external gate driver when used with a 1.8 V microcontroller. Its gate threshold voltage (VGS(th) = -0.45 to -1.0 V) ensures full enhancement at VGS = -1.8 V, and the device is explicitly rated for 1.8 V logic compatibility per Vishay documentation.
What is the thermal resistance from junction to ambient for SI4465ADY-T1-E3 under steady-state conditions?
The SI4465ADY-T1-E3 has a maximum junction-to-ambient thermal resistance (RthJA) of 80 °C/W under steady-state conditions on a standard FR4 board. The typical value is 67 °C/W, and this parameter governs temperature rise during continuous operation without forced airflow or heatsinking.
Is SI4465ADY-T1-E3 halogen-free and RoHS-compliant?
Yes, SI4465ADY-T1-E3 is both halogen-free per IEC 61249-2-21 and RoHS-compliant. The "-E3" suffix denotes lead-free (Pb-free) termination, and the datasheet explicitly states halogen-free construction as a feature of this ordering variant.
Can SI4465ADY-T1-E3 be used in synchronous rectification for a 5 V output buck converter?
Yes, SI4465ADY-T1-E3 is suitable for synchronous rectification in 5 V buck converters. Its RDS(on) = 0.009 Ω at VGS = -4.5 V and Qrr = 81–125 nC enable high efficiency and low switching loss, especially when paired with a compatible high-side controller that provides adequate gate drive timing and voltage.
SI4465ADY-T1-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- TrenchFET®
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- FET Type:
- P-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 8 V
- Current - Continuous Drain (Id) @ 25°C:
- 13.7A (Ta), 20A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 1.8V, 4.5V
- Rds On (Max) @ Id, Vgs:
- 9mOhm @ 14A, 4.5V
- Vgs(th) (Max) @ Id:
- 1V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs:
- 85 nC @ 4.5 V
- Vgs (Max):
- ±8V
- Input Capacitance (Ciss) (Max) @ Vds:
- -
- FET Feature:
- -
- Power Dissipation (Max):
- 3W (Ta), 6.5W (Tc)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SI4465ADY-T1-E3 FAQ
1.How can I place an order for SI4465ADY-T1-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI4465ADY-T1-E3 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 SI4465ADY-T1-E3 reliable?
The price and inventory of SI4465ADY-T1-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI4465ADY-T1-E3 is usually 5 days.
3.What payment methods are accepted for SI4465ADY-T1-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI4465ADY-T1-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI4465ADY-T1-E3?
SI4465ADY-T1-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI4465ADY-T1-E3 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 SI4465ADY-T1-E3?
For technical support, including SI4465ADY-T1-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI4465ADY-T1-E3 requirements.
6.How does Aetrix verify that SI4465ADY-T1-E3 is sourced from the original manufacturer or authorized distributors?
All SI4465ADY-T1-E3 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 SI4465ADY-T1-E3 meets industry standards.
7.What is the process for return or replacement of SI4465ADY-T1-E3?
All SI4465ADY-T1-E3 units undergo pre-shipment inspection (PSI). If there is an issue with SI4465ADY-T1-E3, 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 SI4465ADY-T1-E3 part is unused and in its original packaging.
Return procedure for SI4465ADY-T1-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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