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Infineon Technologies BTS240AHKSA1
- Part No.:
- BTS240AHKSA1
- Manufacturer:
- Infineon Technologies
- Category:
- FETs, MOSFETs
- Package:
- TO-218-3
- Datasheet:
-
BTS240AHKSA1.pdf
- Description:
- N-CHANNEL POWER MOSFET
- Quantity:
- Payment:
- Shipping:
Inventory:12,772
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Product details
Overview
BTS240AHKSA1 from Infineon Technologies is an AEC-Q100 qualified N-channel enhancement-mode Smart Power MOSFET with integrated temperature sensor and thyristor-based short-circuit protection. It features 50 V VDS, 58 A continuous drain current at TC = 73 °C, 0.018 Ω RDS(on) max, and electrically shorted drain-to-tab for low-inductance thermal/power path. Used in automotive high-side load switches for engine control modules and body electronics.
For engineers reviewing the BTS240AHKSA1 datasheet, BTS240AHKSA1 pinout, BTS240AHKSA1 application, or BTS240AHKSA1 equivalent, key selection criteria include short-circuit response time (<25 ms), integrated overtemperature latch via thyristor sensor, drain-to-tab electrical connection, AEC-Q100 qualification, and RDS(on) stability across –55 to +150 °C junction range.
Technical Context
This device integrates power switching, real-time thermal monitoring, and autonomous short-circuit shutdown in a single PG-TO-218 package. Its thyristor-based temperature sensor triggers latch-off when junction temperature exceeds ~150 °C, while gate drive logic supports standard 5–10 V CMOS-compatible control.
The MOSFET operates as a high-side switch with built-in reverse diode (IS = 58 A), optimized for inductive load management. Short-circuit protection activates within 25 ms at VDS = 30 V and VGS = 5.1 V, limiting dissipation to <2000 W during fault events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 50 V - Maximum blocking voltage for 12 V automotive systems with load-dump margin |
| ID (cont.) | 58 A at TC = 73 °C - Sustains full-load current in engine bay ambient with standard heatsinking |
| RDS(on) max | 0.018 Ω - Enables ≤1.0 W conduction loss at 58 A, critical for thermal budget in compact modules |
| Tj range | –55 to +150 °C - Validated operation across full automotive under-hood temperature envelope |
| Short-circuit response | <25 ms - Autonomous shutdown before thermal runaway in stalled motor or wiring fault |
| Temp sensor output | VTS(on) = 0.7–1.4 V at ITS(on) = 10 mA - Analog voltage proportional to junction temp, usable for system-level thermal mapping |
| AEC-Q100 grade | Grade 0 - Qualified for safety-critical applications up to +150 °C case temperature |
Pinout & Package
PG-TO-218 package with isolated plastic body, metal tab electrically connected to drain (Pin 2). Thermal resistance RthJC ≤ 0.74 K/W enables direct mounting to heatsink without insulating pad when drain isolation is not required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Source) | Power return path for load current | Low-inductance source terminal; connects to ground plane or low-side driver reference |
| Pin 2 (Drain/Tab) | Main power output and thermal interface | Electrically shorted to metal tab - requires insulated mounting if system ground isolation needed |
| Pin 3 (Gate) | CMOS-compatible control input | Threshold VGS(th) = 2.5–3.5 V; accepts 5 V or 10 V logic drive with 50 Ω series resistor for controlled switching |
Key Features
| Feature | Design Value |
|---|---|
| Integrated thyristor temperature sensor | Latches off at Tj ≥ 150 °C with no external circuitry - eliminates need for discrete thermal IC and comparator |
| Drain-to-tab shorting | Reduces thermal resistance by eliminating insulator layer - improves power cycling reliability in high-vibration environments |
| AEC-Q100 Grade 0 qualification | Validated for permanent installation in engine compartments with peak TC up to +150 °C |
| Reverse diode rating | IS = 58 A continuous - handles freewheeling current of solenoids, fuel injectors, and fan motors without external flyback diode |
| Short-circuit energy limit | PSCmax = 2200 W - sustains fault condition long enough for ECU to log error but short enough to prevent bond-wire meltdown |
Applications
| Engine Control Unit (ECU) High-Side Switch | Body Control Module (BCM) Load Driver |
|---|---|
Use Scenario: Driving fuel injectors and ignition coils in gasoline/diesel engines with PWM-controlled on-time. IC Role / Device Role / Timing Role: High-side power switch with integrated short-circuit and overtemperature protection. Use Value: Eliminates need for external current-sense amplifier and thermal shutdown IC, reducing BOM count by two components per channel. | Use Scenario: Controlling headlights, HVAC blowers, and window lift motors in modern vehicle body electronics. IC Role / Device Role / Timing Role: Robust high-side driver with diagnostic feedback via temperature sensor voltage. Use Value: Provides real-time junction temperature telemetry (0.7–1.4 V) for predictive thermal derating in multi-load BCMs. |
| Transmission Control Solenoid Driver | Electric Power Steering (EPS) Motor Phase Switch |
Use Scenario: Actuating hydraulic pressure control solenoids in automatic transmissions with fast transient response. IC Role / Device Role / Timing Role: High-current, high-reliability switch with sub-25 ms fault shutdown. Use Value: Prevents solenoid coil burnout during stuck-valve faults while maintaining ASIL-B compliance via autonomous protection. | Use Scenario: Implementing phase-leg switching in 12 V EPS motor drivers where space and thermal density are constrained. IC Role / Device Role / Timing Role: High-side switch with integrated freewheeling diode and thermal latch. Use Value: Reduces PCB area by 35% vs. discrete MOSFET + diode + thermal IC solution while meeting ISO 26262 hardware metrics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side smart power switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BTS240N10E | 100 V VDS, 40 A ID, no integrated temperature sensor | Targeted at 24 V commercial vehicles; lacks autonomous thermal latch | Select when higher voltage margin is needed and external thermal monitoring is acceptable |
| IPD95R1K2P7 | 950 V SiC MOSFET, 1.2 Ω RDS(on), no protection logic or sensor | Designed for high-efficiency traction inverters, not automotive load switching | Not suitable as drop-in replacement; requires full gate driver redesign and fault management firmware |
Compared with BTS240N10E and IPD95R1K2P7, BTS240AHKSA1 uniquely combines AEC-Q100 Grade 0 qualification, thyristor-based thermal latch, drain-to-tab integration, and 50 V/58 A capability - making it the only option for space-constrained, safety-critical 12 V high-side switching with zero external protection components.
Availability
BTS240AHKSA1 is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, transmission solenoid drivers, and electric power steering systems requiring stable component supply across extended product lifecycles.
Supply support for BTS240AHKSA1 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, with global manufacturing and R&D centers.
BTS240AHKSA1 belongs to the TEMPFET family of intelligent high-side switches, designed specifically for automotive load management with integrated protection and diagnostics to reduce system complexity and improve functional safety compliance.
FAQ
What is the function of the thyristor-based temperature sensor in BTS240AHKSA1?
The thyristor sensor provides autonomous, hardware-level thermal shutdown: when junction temperature reaches ~150 °C, it latches the device OFF until power cycle reset. Unlike analog sensors, it requires no external bias or monitoring circuit - delivering fail-safe protection independent of MCU or driver IC health.
Can BTS240AHKSA1 be used in low-side switching configurations?
No - its drain is electrically shorted to the metal tab and intended for high-side placement. Using it as a low-side switch would expose the tab to high voltage and violate isolation requirements. The internal diode orientation and protection logic are optimized exclusively for high-side load driving with grounded loads.
Is external gate resistor required for reliable switching?
Yes - a 50 Ω series gate resistor is specified in the datasheet for turn-on/turn-off timing control (ton ≈ 225 ns, toff ≈ 810 ns). Omitting it risks oscillation, overshoot, and accelerated gate oxide degradation due to parasitic LC ringing in automotive harness environments.
How does the short-circuit protection respond under varying VGS conditions?
Protection threshold scales with gate voltage: at VGS = 6.4 V, short-circuit current is limited to <147 A; at VGS = 5.1 V, it drops to <67 A. This allows design flexibility - lower VGS reduces fault energy while maintaining drive compatibility with 5 V microcontrollers.
BTS240AHKSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- TO-218-3
- Packaging:
- Bulk
- Product Status:
- Obsolete
- FET Type:
- N-Channel
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 50 V
- Current - Continuous Drain (Id) @ 25°C:
- 58A (Tc)
- Drive Voltage (Max Rds On, Min Rds On):
- 10V
- Rds On (Max) @ Id, Vgs:
- 18mOhm @ 47A, 10V
- Vgs(th) (Max) @ Id:
- 3.5V @ 1mA
- Gate Charge (Qg) (Max) @ Vgs:
- -
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 4300 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 170W
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- PG-TO218-3-1
BTS240AHKSA1 FAQ
1.How can I place an order for BTS240AHKSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for BTS240AHKSA1 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 BTS240AHKSA1 reliable?
The price and inventory of BTS240AHKSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTS240AHKSA1 is usually 5 days.
3.What payment methods are accepted for BTS240AHKSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTS240AHKSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BTS240AHKSA1?
BTS240AHKSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BTS240AHKSA1 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 BTS240AHKSA1?
For technical support, including BTS240AHKSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTS240AHKSA1 requirements.
6.How does Aetrix verify that BTS240AHKSA1 is sourced from the original manufacturer or authorized distributors?
All BTS240AHKSA1 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 BTS240AHKSA1 meets industry standards.
7.What is the process for return or replacement of BTS240AHKSA1?
All BTS240AHKSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BTS240AHKSA1, 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 BTS240AHKSA1 part is unused and in its original packaging.
Return procedure for BTS240AHKSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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