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Infineon Technologies BSO4804
- Part No.:
- BSO4804
- Manufacturer:
- Infineon Technologies
- Category:
- FET, MOSFET Arrays
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
BSO4804.pdf
- Description:
- MOSFET 2N-CH 30V 8A 8DSO
- Quantity:
- Payment:
- Shipping:
Inventory:9,433
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Product details
Overview
BSO4804 from Infineon Technologies is an N-channel enhancement-mode logic-level power MOSFET in PG-DSO-8-7 package, rated for 30 V VDS, 8 A continuous drain current at 25°C, and 20 mΩ RDS(on) at VGS = 10 V. It features avalanche rating, 6 kV/µs dv/dt capability, and optimized gate charge × RDS(on) figure-of-merit (150 mJ EAS, 13.5–17 nC Qg), enabling use in fast-switching DC-DC converters and motor control stages.
For engineers reviewing the BSO4804 datasheet, BSO4804 pinout, BSO4804 application, or BSO4804 equivalent, key selection criteria include logic-level gate drive compatibility (VGS(th) = 1.2–2.0 V), thermal resistance (RthJS = 45 K/W), reverse diode forward voltage (VSD = 0.9–1.3 V), and safe operating area under pulsed conditions (ID,puls = 32 A).
Technical Context
This MOSFET employs trench-based OptiMOS technology to achieve low conduction loss and fast switching with minimal gate drive requirements. Its 150°C maximum junction temperature and avalanche-rated construction support robust operation in thermally constrained industrial and automotive power stages.
The device integrates a monolithic body diode with trr = 24–30 ns and Qrr = 16–20 nC, enabling efficient synchronous rectification and freewheeling in buck and half-bridge topologies without external Schottky diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 30 V - Maximum blocking voltage before avalanche onset; defines usable input range in 24 V systems. |
| RDS(on) @ VGS = 10 V | 17.4–20 mΩ - Conduction loss of ~136 mW at 8 A DC; enables high-efficiency low-voltage power switches. |
| ID (continuous) | 8 A @ TA = 25°C - Sustained load current capability on standard FR4 PCB with 6 cm² copper area. |
| Qg | 13.5–17 nC - Total gate charge determining drive strength requirement; supports <100 ns switching with 1 Ω gate resistor. |
| EAS | 90 mJ - Single-pulse avalanche energy; allows reliable operation during inductive turn-off transients without snubbers. |
| tr/tf | 27–40 ns / 24–36 ns - Fast edge rates enabling >500 kHz switching in hard-switched topologies. |
| VGS(th) | 1.2–2.0 V - Logic-level threshold enabling direct drive from 3.3 V or 5 V microcontrollers without level shifters. |
Pinout & Package
BSO4804 uses the PG-DSO-8-7 surface-mount package (8-pin SOIC variant with exposed drain pad), optimized for thermal performance on PCBs with minimum footprint and 6 cm² copper area. The exposed drain pad improves heat dissipation and reduces RthJS to 45 K/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7 | Drain (D) | Internally connected to exposed thermal pad; primary current path and heat sink interface. |
| 8 | Source (S) | Reference node for gate drive and load return; tied to ground or low-side switch node. |
| G | Gate (G) | Control terminal; requires <20 V max rating and low-impedance drive due to 1.1 Ω internal RG. |
Key Features
| Feature | Design Value |
|---|---|
| Logic-level gate drive | VGS(th) ≤ 2.0 V enables direct interfacing with 3.3 V/5 V MCUs and FPGAs without gate drivers. |
| Avalanche-rated operation | 90 mJ single-pulse EAS ensures ruggedness against inductive kickback in motor drives and relay loads. |
| Low gate charge × RDS(on) | FOM ≈ 150 mΩ·nC - balances switching loss and conduction loss for high-frequency SMPS efficiency. |
| dv/dt immunity | 6 kV/µs rated - suppresses false turn-on in noisy high-di/dt environments like half-bridge inverters. |
Applications
| Brushless DC Motor Control | Automotive Body Control Module |
|---|---|
Use Scenario: Low-side switching in 3-phase BLDC gate driver IC output stage driving 12–24 V fans or pumps. IC Role / Device Role / Timing Role: Power switch delivering up to 8 A phase current with <40 ns fall time to minimize dead-time losses. Use Value: Logic-level VGS(th) eliminates need for high-side gate driver biasing; integrated diode handles PWM freewheeling. | Use Scenario: Load switching for LED headlight dimming, window lift motors, or HVAC actuators in 12 V vehicle systems. IC Role / Device Role / Timing Role: High-reliability discrete switch replacing electromechanical relays with faster response and no contact wear. Use Value: Avalanche rating withstands inductive spikes from solenoid coils; 150°C Tjmax supports under-hood placement. |
| Industrial DC-DC Converter | USB-C Power Delivery Sink |
Use Scenario: Synchronous rectifier in 5–24 V input, 3.3–12 V output buck converter for PLC I/O modules. IC Role / Device Role / Timing Role: Secondary-side switch replacing Schottky diode to reduce conduction loss and improve efficiency above 85%. Use Value: VSD = 0.9–1.3 V and trr = 24–30 ns minimize reverse recovery loss and EMI generation. | Use Scenario: Input protection and load switch in USB-C PD sink circuits handling up to 3 A at 5–20 V. IC Role / Device Role / Timing Role: Reverse-voltage and overcurrent protected power path switch with fast fault response. Use Value: Low RDS(on) limits voltage drop across switch; dv/dt rating prevents false triggering during hot-plug transients. |
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 |
|---|---|---|---|
| IPB4804 | Same die in TO-263 package; higher Ptot (62 W) but larger footprint and no exposed pad on leadframe. | Preferred where board space allows and heatsinking via heatsink is available instead of PCB copper. | Select IPB4804 for higher continuous power; BSO4804 for compact SMT designs with PCB thermal management. |
| IRF7470PBF | Higher RDS(on) (28 mΩ), lower ID (6.2 A), same VDS (30 V); SO-8 package but non-exposed drain. | Suitable for lower-current applications where thermal margin is less critical and cost is prioritized. | Choose IRF7470PBF only if peak current ≤ 6 A and RthJA < 110 K/W is acceptable. |
Compared with IPB4804 and IRF7470PBF, BSO4804 delivers superior thermal performance (RthJS = 45 K/W) and lower conduction loss in space-constrained SMT layouts, while maintaining logic-level gate compatibility and avalanche ruggedness essential for industrial and automotive switching.
Availability
BSO4804 is available at Aetrix Electronics and suitable for brushless DC motor control, automotive body electronics, industrial DC-DC converters, and USB-C power delivery systems requiring stable component supply and long-term lifecycle support.
Supply support for BSO4804 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
Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs and discrete devices.
The OptiMOS product line delivers high-performance, logic-level N-channel MOSFETs optimized for efficiency-critical switching applications in automotive, industrial, and computing power systems.
FAQ
What is the maximum allowable gate-source voltage for BSO4804?
The absolute maximum VGS is ±20 V per datasheet specifications. Operation beyond this risks permanent gate oxide damage. Recommended drive voltage is 10 V for full RDS(on) optimization, with 4.5 V sufficient for logic-level operation. Gate resistors must limit peak current to avoid overshoot exceeding ±20 V during fast switching.
Can BSO4804 be used in parallel configurations?
Yes, BSO4804 supports paralleling due to its positive temperature coefficient of RDS(on), which promotes current sharing. However, matched gate drive layout (equal trace length/inductance) and individual gate resistors (≥1 Ω) are required to prevent oscillation and ensure balanced dynamic current distribution across devices.
Does BSO4804 require a gate driver IC in 3.3 V MCU applications?
No. With VGS(th) as low as 1.2 V and guaranteed turn-on at 4.5 V, BSO4804 can be directly driven by 3.3 V or 5 V GPIOs. For high-frequency (>200 kHz) or high-current (>5 A) operation, a dedicated gate driver improves switching speed and reduces drive losses, but is not mandatory for basic on/off control.
How does the BSO4804's avalanche rating impact system reliability?
The 90 mJ single-pulse EAS rating allows BSO4804 to safely absorb inductive energy during unclamped inductive switching events-such as motor phase commutation or relay coil de-energization-without failure. This eliminates need for external clamping components in many industrial and automotive applications, reducing BOM count and improving long-term field reliability.
BSO4804 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OptiMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- MOSFET (Metal Oxide)
- Configuration:
- 2 N-Channel (Dual)
- FET Feature:
- Logic Level Gate
- Drain to Source Voltage (Vdss):
- 30V
- Current - Continuous Drain (Id) @ 25°C:
- 8A
- Rds On (Max) @ Id, Vgs:
- 20mOhm @ 8A, 10V
- Vgs(th) (Max) @ Id:
- 2V @ 30µA
- Gate Charge (Qg) (Max) @ Vgs:
- 17nC @ 5V
- Input Capacitance (Ciss) (Max) @ Vds:
- 870pF @ 25V
- Power - Max:
- 2W
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DSO-8
BSO4804 FAQ
1.How can I place an order for BSO4804 through Aetrix?
Please submit a Request for Quotation (RFQ) for BSO4804 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 BSO4804 reliable?
The price and inventory of BSO4804 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSO4804 is usually 5 days.
3.What payment methods are accepted for BSO4804?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSO4804 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BSO4804?
BSO4804 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BSO4804 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 BSO4804?
For technical support, including BSO4804 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSO4804 requirements.
6.How does Aetrix verify that BSO4804 is sourced from the original manufacturer or authorized distributors?
All BSO4804 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 BSO4804 meets industry standards.
7.What is the process for return or replacement of BSO4804?
All BSO4804 units undergo pre-shipment inspection (PSI). If there is an issue with BSO4804, 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 BSO4804 part is unused and in its original packaging.
Return procedure for BSO4804:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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