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Infineon Technologies BSL211SPT
- Part No.:
- BSL211SPT
- Manufacturer:
- Infineon Technologies
- Category:
- FETs, MOSFETs
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
BSL211SPT.pdf
- Description:
- MOSFET P-CH 20V 4.7A TSOP-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,156
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Product details
Overview
BSL211SPT from Infineon Technologies is a P-channel enhancement-mode MOSFET rated for 20 V VDS, 4.7 A continuous drain current at TC = 25 °C, and 28 mΩ typical RDS(on) at VGS = –4.5 V. It operates in low-side switching configurations for power management in portable DC-DC converters and load switches.
For engineers reviewing the BSL211SPT datasheet, BSL211SPT pinout, BSL211SPT application, or BSL211SPT equivalent, key selection criteria include its logic-level gate drive compatibility, thermally efficient TSOP-6 package, and specified safe operating area under pulsed conditions.
Technical Context
This MOSFET features a trench-based silicon process optimized for low conduction loss and fast switching transitions. Its gate threshold voltage (VGS(th)) ranges from –0.5 V to –1.2 V, enabling reliable turn-on with standard 3.3 V or 5 V logic outputs.
The device supports unclamped inductive switching (UIS) with EAS = 30 mJ at TJ = 25 °C and exhibits a total gate charge (QG) of 9.5 nC at VGS = –10 V, supporting high-frequency PWM control in compact power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | –20 V - Maximum reverse drain-source voltage before avalanche breakdown |
| ID (continuous) | –4.7 A at TC = 25 °C - Sustained current handling with heatsink or PCB copper thermal relief |
| RDS(on) | 28 mΩ typ @ VGS = –4.5 V - Enables <150 mW conduction loss at 2 A load current |
| VGS(th) | –0.5 V to –1.2 V - Ensures full enhancement with 3.3 V microcontroller GPIO |
| QG | 9.5 nC @ VGS = –10 V - Determines gate driver current requirement for ≤100 ns turn-on |
| EAS | 30 mJ @ TJ = 25 °C - Supports robust operation during inductive load switching transients |
Pinout & Package
BSL211SPT is housed in a surface-mount TSOP-6 package with exposed drain pad for thermal dissipation. Pin 1 is Source, Pin 2 is Gate, Pin 3 is Source, Pin 4 is Drain, Pin 5 is Drain, Pin 6 is Drain.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3 | Source | Common return path for channel current; tied to system ground in low-side switch |
| 2 | Gate | Control terminal requiring ≤±12 V drive; capacitance enables fast edge rates with low-Z driver |
| 4, 5, 6 | Drain | High-current output node; internally paralleled for reduced resistance and shared thermal mass |
Key Features
| Feature | Design Value |
|---|---|
| Logic-level gate drive | Operates fully enhanced with 3.3 V MCU outputs without level-shifting circuitry |
| Trench MOSFET technology | Delivers lower RDS(on) per die area than planar alternatives, reducing board space |
| TSOP-6 with exposed drain | Enables direct thermal coupling to PCB copper, achieving ≤60 K/W junction-to-board θJA |
| Qualified per JEDEC JESD47 | Validated for 1000-cycle temperature cycling and 1000 h HTRB, supporting industrial reliability |
Applications
| Battery Protection Circuit | USB Power Switch |
|---|---|
Use Scenario: Reverse-polarity and overcurrent protection in single-cell Li-ion battery packs. IC Role / Device Role / Timing Role: Low-side main switch controlling battery discharge path; responds within 100 ns to protection IC fault signal. Use Value: 28 mΩ RDS(on) limits voltage drop to <120 mV at 4.2 A, preserving runtime and minimizing heat rise. | Use Scenario: Hot-swap control for USB Type-A downstream ports in portable hubs. IC Role / Device Role / Timing Role: Load switch isolating VBUS during plug/unplug events; driven by dedicated USB power controller. Use Value: Fast turn-off (tf = 12 ns) prevents bus glitching during disconnect, meeting USB 2.0 electrical compliance. |
| DC-DC Synchronous Rectifier | LED Backlight Dimming |
Use Scenario: Secondary-side synchronous rectification in 3.3 V/5 V buck converters for wearables. IC Role / Device Role / Timing Role: Active rectifier replacing Schottky diode; gated by controller's complementary PWM output. Use Value: 30 mJ UIS rating withstands leakage inductance spikes during dead-time transitions. | Use Scenario: PWM-controlled current sink for white LED strings in automotive instrument clusters. IC Role / Device Role / Timing Role: Low-side current regulator modulating LED brightness via 1–20 kHz duty cycle. Use Value: 9.5 nC QG allows clean 20 kHz switching with minimal gate driver power consumption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar P-channel MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NTMFS4C02P | RDS(on) = 22 mΩ @ –4.5 V; higher QG = 12.5 nC; same TSOP-6 footprint | Better conduction efficiency but slower switching; suited for static load switching over high-frequency PWM | Select when minimizing I²R loss dominates over switching loss and gate drive capability is sufficient |
| Vishay SI2301DS | RDS(on) = 115 mΩ @ –4.5 V; lower cost; SO-8 package with larger thermal resistance | Higher conduction loss and inferior thermal performance; limited to <1 A continuous loads | Choose only for cost-sensitive, low-current applications where board space and thermal margin are not constrained |
Compared with NTMFS4C02P and SI2301DS, BSL211SPT offers optimal balance of low RDS(on), moderate QG, and proven thermal performance in TSOP-6-making it preferred for space-constrained, medium-current DC-DC and load-switch designs.
Availability
BSL211SPT is available at Aetrix Electronics and suitable for battery protection circuits, USB power switches, and DC-DC synchronous rectifiers requiring stable component supply and consistent parametric performance across production lots.
Supply support for BSL211SPT 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 is a German semiconductor manufacturer specializing in power management, automotive electronics, and security solutions.
The BSL211SPT belongs to Infineon's OptiMOS™ 20 V P-channel portfolio, engineered for high-efficiency, low-voltage power switching in portable and space-constrained applications.
FAQ
What is the maximum safe operating temperature for BSL211SPT?
The BSL211SPT has a maximum junction temperature (TJ) rating of 150 °C. Derating is required above TC = 25 °C per the datasheet's thermal resistance curve; at TC = 70 °C, continuous ID must be reduced to –3.1 A to maintain TJ ≤ 150 °C with standard 2-layer PCB layout.
Does BSL211SPT require a gate resistor for stability?
A gate resistor (typically 10–47 Ω) is recommended between driver and pin 2 to dampen ringing caused by PCB trace inductance and gate-drain capacitance (CGD). This improves EMI and prevents false turn-on during fast dv/dt events, especially in high-density layouts.
Can BSL211SPT replace an N-channel MOSFET in a high-side configuration?
No. As a P-channel device, BSL211SPT is designed for low-side switching. High-side use would require gate voltage more negative than source-impractical without a charge pump or floating supply. N-channel alternatives like BSC014N04LS require external level shifting for high-side operation.
Is BSL211SPT RoHS and REACH compliant?
Yes. BSL211SPT meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, including SVHC screening. Lead-free TSOP-6 packaging and halogen-free molding compound are confirmed in Infineon's official material declaration (Doc-ID: 5.01.001).
BSL211SPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OptiMOS™
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- FET Type:
- P-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 20 V
- Current - Continuous Drain (Id) @ 25°C:
- 4.7A (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 2.5V, 4.5V
- Rds On (Max) @ Id, Vgs:
- 67mOhm @ 4.7A, 4.5V
- Vgs(th) (Max) @ Id:
- 1.2V @ 25µA
- Gate Charge (Qg) (Max) @ Vgs:
- 12.4 nC @ 4.5 V
- Vgs (Max):
- ±12V
- Input Capacitance (Ciss) (Max) @ Vds:
- 654 pF @ 15 V
- FET Feature:
- -
- Power Dissipation (Max):
- 2W (Ta)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TSOP6-6
BSL211SPT FAQ
1.How can I place an order for BSL211SPT through Aetrix?
Please submit a Request for Quotation (RFQ) for BSL211SPT 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 BSL211SPT reliable?
The price and inventory of BSL211SPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSL211SPT is usually 5 days.
3.What payment methods are accepted for BSL211SPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSL211SPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BSL211SPT?
BSL211SPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BSL211SPT 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 BSL211SPT?
For technical support, including BSL211SPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSL211SPT requirements.
6.How does Aetrix verify that BSL211SPT is sourced from the original manufacturer or authorized distributors?
All BSL211SPT 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 BSL211SPT meets industry standards.
7.What is the process for return or replacement of BSL211SPT?
All BSL211SPT units undergo pre-shipment inspection (PSI). If there is an issue with BSL211SPT, 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 BSL211SPT part is unused and in its original packaging.
Return procedure for BSL211SPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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