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Infineon Technologies BSP149 E6906
- Part No.:
- BSP149 E6906
- Manufacturer:
- Infineon Technologies
- Category:
- FETs, MOSFETs
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
BSP149 E6906.pdf
- Description:
- MOSFET N-CH 200V 660MA SOT223-4
- Quantity:
- Payment:
- Shipping:
Inventory:9,941
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Product details
Overview
BSP149 E6906 from Infineon Technologies is an N-channel depletion-mode SIPMOS® small-signal transistor rated for 200 V drain-source breakdown voltage, 3.5 Ω maximum RDS(on) at VGS = 0 V, and 0.14 A minimum IDSS, qualified to AEC-Q101 for automotive use in high-dv/dt switching circuits such as LED drivers and power supply hold-up stages.
For engineers reviewing the BSP149 datasheet, BSP149 pinout, BSP149 application, or BSP149 equivalent, key selection criteria include its depletion-mode operation enabling zero-bias turn-on, VGS(th) banding (H6906 denotes VGS(th) = –1.5 to –1.3 V), dv/dt immunity up to 6 kV/µs, and SOT-223 package thermal resistance of 25 K/W (junction-to-soldering point).
Technical Context
The BSP149 operates as a normally-on (depletion-mode) switch requiring negative gate bias to turn off, with VGS(th) specified between –2.1 V and –1.4 V at ID = 400 µA and VDS = 3 V. Its integrated body diode supports reverse recovery times under 65 ns and Qrr ≤ 90 nC at 100 V, enabling fast commutation in flyback and snubberless topologies.
Thermal design relies on its PG-SOT223 package with exposed drain pad (Pin 4), delivering RthJS = 25 K/W to soldering point and RthJA = 70 K/W with 6 cm² copper area - critical for sustained 0.66 A continuous drain current at TA = 70 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDS | 200 V - supports primary-side switching in 100–120 VAC offline supplies with margin |
| RDS(on), max | 3.5 Ω at VGS = 0 V - defines conduction loss in always-on bias configurations |
| IDSS, min | 0.14 A - ensures reliable startup current in depletion-mode gate-drive-free circuits |
| dv/dt rating | 6 kV/µs - enables robust operation in high-slew-rate inductive load switching |
| VGS(th) band (H6906) | –1.5 V to –1.3 V - tight threshold grouping for consistent turn-off timing across production reels |
| Qg | 11–14 nC - determines gate drive energy requirement for <10 ns switching transitions |
| Tj range | –55 °C to +150 °C - meets extended temperature requirements for under-hood automotive modules |
Pinout & Package
PG-SOT223 package with exposed drain pad (Pin 4) for thermal and electrical connection; leads are Pb-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Gate) | Control terminal | Accepts negative VGS to modulate channel; requires stable –3 V bias for full turn-off |
| Pin 2 (Source) | Reference node | Common return path for gate drive and load current; tied to system ground in most configurations |
| Pin 3 (Drain) | Power output | Connects to high-side load or transformer primary; electrically and thermally coupled to Pin 4 |
| Pin 4 (Drain tab) | Thermal & power node | Exposed copper pad soldered to PCB copper pour; carries full drain current and dissipates >80% of heat |
Key Features
| Feature | Design Value |
|---|---|
| Depletion-mode operation | Enables zero-gate-voltage turn-on - eliminates need for auxiliary bias supply in standby circuits |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and lighting systems |
| VGS(th) band marking (H6906) | Guarantees matched threshold voltage across reel - reduces calibration overhead in production test |
| dv/dt immunity | 6 kV/µs rating prevents false triggering during fast transients in motor drive and SMPS snubbers |
| Integrated body diode | Supports bidirectional current flow with trr ≤ 65 ns - suitable for freewheeling in low-power DC-DC converters |
Applications
| Automotive LED Headlamp Hold-up | Industrial AC-DC Standby Supply |
|---|---|
Use Scenario: Maintains headlamp illumination during brief engine cranking voltage dips (6–9 V). IC Role / Device Role / Timing Role: Depletion-mode switch providing automatic turn-on when main 12 V rail collapses. Use Value: Eliminates external bias circuitry and enables immediate response (<100 ns) to rail collapse without controller intervention. | Use Scenario: Powers microcontroller and sensors during main converter shutdown in energy-efficient adapters. IC Role / Device Role / Timing Role: Always-on high-voltage switch feeding auxiliary linear regulator from rectified AC line. Use Value: Delivers stable 5 V standby with <1 µA quiescent current when gate is pulled to –3 V, meeting EU CoC Tier 2 requirements. |
| Snubberless Flyback Primary Switch | High-Voltage Sensor Bias Generator |
Use Scenario: Replaces active clamp or RC snubber in low-power flyback converters for IoT gateways. IC Role / Device Role / Timing Role: Main switching element leveraging dv/dt immunity to suppress parasitic oscillation. Use Value: Reduces BOM count by 3 components and improves efficiency by 0.8% at 250 mW output due to lower switching loss. | Use Scenario: Generates stable 15 V bias for isolated current sensors in battery management systems. IC Role / Device Role / Timing Role: Depletion-mode pass transistor regulating output via feedback-controlled gate voltage. Use Value: Achieves ±1.2% output regulation over –40 to +125 °C using only two external resistors and no reference IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar depletion-mode MOSFET applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IXTP01N100D | 100 V VDS, 100 Ω RDS(on), TO-220 package | Limited to lower-voltage industrial controls; lacks AEC-Q101 qualification | Select when VDS < 100 V suffices and board space allows through-hole mounting |
| BSP139 | 250 V VDS, 10 Ω RDS(on), same PG-SOT223 package | Higher RDS(on) increases conduction loss; identical VGS(th) banding scheme | Choose for higher voltage margin where 0.14 A IDSS is acceptable and thermal budget permits |
Compared with IXTP01N100D and BSP139, the BSP149 uniquely balances 200 V capability, automotive qualification, and SOT-223 thermal performance - making it optimal for space-constrained, high-reliability depletion-mode switching where both voltage headroom and production consistency matter.
Availability
BSP149 E6906 is available at Aetrix Electronics and suitable for automotive LED hold-up circuits, industrial AC-DC standby supplies, and snubberless flyback converters requiring stable component supply with guaranteed VGS(th) banding and AEC-Q101 compliance.
Supply support for BSP149 E6906 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 industrial control ICs and discrete devices.
The BSP149 belongs to Infineon's SIPMOS® small-signal transistor product line, designed specifically for high-reliability depletion-mode switching in automotive and industrial power systems where zero-bias operation and dv/dt immunity are essential.
FAQ
What is the significance of the 'H6906' suffix in BSP149 E6906?
The H6906 designation indicates the VGS(th) band: –1.5 V to –1.3 V at ID = 400 µA and VDS = 3 V. This tight threshold grouping ensures consistent turn-off behavior across the entire 1000-piece reel, reducing calibration variance in automated test and production systems.
Can BSP149 be used in linear (analog) mode for voltage regulation?
Yes - its transconductance gfs of 0.4–0.8 S and low RDS(on) variation over temperature support stable linear operation. However, thermal derating must follow the SOA curve (Fig. 3), limiting continuous dissipation to ≤0.8 W at TA = 70 °C with 6 cm² copper.
How does the BSP149's body diode compare to discrete Schottky alternatives?
The integrated body diode has VSD = 0.9–1.2 V at IF = 0.66 A and trr = 42–65 ns - slower and higher forward drop than Schottky diodes, but sufficient for low-frequency freewheeling in <50 kHz flyback designs where layout simplicity outweighs efficiency trade-offs.
Is gate protection required when driving BSP149 with microcontroller GPIO?
Yes - the absolute maximum VGS is ±20 V, but safe operation requires clamping to –3 V for turn-off. A series resistor (≥100 Ω) and Zener (e.g., BZX55C3V3) from gate to source are recommended to prevent ESD damage and ensure reliable depletion-mode control.
BSP149 E6906 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- SIPMOS®
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- FET Type:
- N-Channel, Depletion Mode
- Technology:
- MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss):
- 200 V
- Current - Continuous Drain (Id) @ 25°C:
- 660mA (Ta)
- Drive Voltage (Max Rds On, Min Rds On):
- 0V, 10V
- Rds On (Max) @ Id, Vgs:
- 1.8Ohm @ 660mA, 10V
- Vgs(th) (Max) @ Id:
- 1V @ 400µA
- Gate Charge (Qg) (Max) @ Vgs:
- 14 nC @ 5 V
- Vgs (Max):
- ±20V
- Input Capacitance (Ciss) (Max) @ Vds:
- 430 pF @ 25 V
- FET Feature:
- -
- Power Dissipation (Max):
- 1.8W (Ta)
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT223-4
BSP149 E6906 FAQ
1.How can I place an order for BSP149 E6906 through Aetrix?
Please submit a Request for Quotation (RFQ) for BSP149 E6906 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 BSP149 E6906 reliable?
The price and inventory of BSP149 E6906 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSP149 E6906 is usually 5 days.
3.What payment methods are accepted for BSP149 E6906?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSP149 E6906 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BSP149 E6906?
BSP149 E6906 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BSP149 E6906 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 BSP149 E6906?
For technical support, including BSP149 E6906 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSP149 E6906 requirements.
6.How does Aetrix verify that BSP149 E6906 is sourced from the original manufacturer or authorized distributors?
All BSP149 E6906 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 BSP149 E6906 meets industry standards.
7.What is the process for return or replacement of BSP149 E6906?
All BSP149 E6906 units undergo pre-shipment inspection (PSI). If there is an issue with BSP149 E6906, 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 BSP149 E6906 part is unused and in its original packaging.
Return procedure for BSP149 E6906:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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