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Home > Products > Discrete Semiconductor Products > Transistors > FETs, MOSFETs > FETs, MOSFETs

Infineon Technologies BSP149L6906HTSA1

Name: BSP149L6906HTSA1
Brand: Infineon Technologies
SKU: BSP149L6906HTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BSP149L6906HTSA1

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-261-4, TO-261AA

Datasheet:: BSP149L6906HTSA1.pdf

Description:: MOSFET N-CH 200V 660MA SOT223-4

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Product details

Overview

BSP149L6906HTSA1 from Infineon Technologies is an N-channel depletion-mode SIPMOS® small-signal transistor rated for 200 V drain-source breakdown voltage, 3.5 Ω max R_DS(on) at V_GS = 0 V, and 0.14 A minimum I_DSS, qualified per AEC-Q101 for automotive use in load switching and voltage clamping circuits.

For engineers reviewing the BSP149L6906HTSA1 datasheet, BSP149L6906HTSA1 pinout, BSP149L6906HTSA1 application, or BSP149L6906HTSA1 equivalent, key selection criteria include its dv/dt rating (6 kV/µs), V_GS(th) banding (H6906 indicates L-band: −1.35 to −1.15 V), and SOT-223 package thermal resistance (R_thJS = 25 K/W).

Technical Context

This device operates as a normally-on (depletion-mode) switch requiring negative gate bias to turn off, with gate threshold voltage sorted into defined bands (L-band for H6906 marking) to enable precise timing or analog bias control in linear applications. Its dv/dt immunity supports reliable operation in inductive switching environments without spurious turn-on.

It integrates a fast-recovery body diode (t_rr = 42–65 ns, Q_rr = 60–90 nC) and exhibits low input capacitance (C_iss = 326–430 pF), enabling high-speed switching while maintaining robust ESD tolerance (JESD22-A114-HBM Class 1B).

Key Specifications

Parameter	Value and Actual Design Meaning
V_BR(DSS)	200 V - Withstands up to 200 V drain-source before avalanche conduction; enables use in 12–48 V automotive bus protection.
R_DS(on), max	3.5 Ω at V_GS = 0 V - Defines on-state power loss (P = I²R) for 70 mA continuous current; impacts thermal design in SOT-223 footprint.
I_DSS, min	0.14 A - Ensures guaranteed minimum conduction at zero gate bias; critical for bias networks and constant-current sources.
V_GS(th) band	L-band (−1.35 to −1.15 V) - Tight V_GS(th) distribution improves matching in parallel or analog gain stages.
dv/dt rating	6 kV/µs - Prevents false triggering during fast voltage transients in motor drive or relay coil snubbing.
t_rr	42–65 ns - Enables efficient commutation in flyback and resonant converters with minimal reverse recovery loss.
R_thJS	25 K/W - Junction-to-solder-point thermal resistance; determines maximum power dissipation under PCB copper area constraints.

Pinout & Package

Package: PG-SOT223 (standardized JEDEC TO-261 variant), surface-mount, 4-pin configuration with drain connected to tab (pin 4). Thermal pad must be soldered to PCB copper for rated R_thJS.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Gate (G)	Control terminal; requires negative voltage relative to source to reduce conduction; sensitive to ESD (±20 V absolute max).
Pin 2	Source (S)	Reference node for gate drive; tied to system ground in most configurations; carries full load current.
Pin 3	Drain (D)	High-side switching node; connects to inductive load or supply rail; shares thermal path with pin 4.
Pin 4	Drain (D) / Thermal Pad	Electrically identical to pin 3; primary heat transfer path to PCB; must be soldered for thermal performance.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive underhood applications including temperature cycling, humidity, and mechanical shock.
V_GS(th) banding (H6906)	L-band sorting ensures ±0.1 V V_GS(th) tolerance for predictable turn-off behavior across production lots.
dv/dt immunity	6 kV/µs rating eliminates need for external gate snubbers in 24 V industrial relay drivers.
Integrated body diode	Fast t_rr (42–65 ns) and low V_SD (0.9–1.2 V) support freewheeling in half-bridge topologies without discrete diode.
Pb-free & halogen-free	RoHS-compliant plating and IEC61249-2-21 compliance meet automotive OEM material declaration requirements.

Applications

Automotive Load Switching

Industrial Voltage Clamp

Use Scenario: Controlling 12 V solenoid valves in engine management systems where fail-safe "on" state is required at power-up.

IC Role / Device Role / Timing Role: Depletion-mode switch providing default-conducting behavior until gate is actively pulled negative.

Use Value: Eliminates need for external pull-up resistors or auxiliary bias supplies; reduces BOM count by one active component.

Use Scenario: Clamping transient overvoltage on 24 V CAN bus power lines during load dump events.

IC Role / Device Role / Timing Role: Fast-acting crowbar element triggered by controlled gate bias to shunt excess energy to ground.

Use Value: Leverages 6 kV/µs dv/dt immunity to avoid false triggering during ESD bursts while clamping within 200 V limit.

Analog Current Source

Linear Regulator Pass Element

Use Scenario: Generating stable 150 µA bias current for precision op-amp input stages in battery-powered sensors.

IC Role / Device Role / Timing Role: Constant-current sink using V_GS(th)-stabilized I_DSS with temperature-compensated feedback.

Use Value: L-band V_GS(th) tightness (±0.1 V) ensures <±3% current variation across unit-to-unit and temperature.

Use Scenario: Low-noise pass transistor in 5 V post-regulation stage for infotainment microcontrollers.

IC Role / Device Role / Timing Role: Linear-mode voltage-controlled resistor operating below saturation to minimize ripple amplification.

Use Value: Low R_DS(on) drift with temperature (R_DS(on) increases only 2× from −40 °C to 150 °C) maintains regulation accuracy.

Equivalent & Alternatives

The following parts are listed as comparable options for similar depletion-mode MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMN2004LKQ-7	20 V V_BR(DSS), 3.5 Ω R_DS(on), SOT-23 package, no V_GS(th) banding	Lower voltage rating limits use to ≤12 V logic-level circuits; smaller package reduces thermal capacity.	Select when space-constrained and V_DS < 15 V; avoid for automotive load dump scenarios.
BSP129H6327XTSA1	Same die, H6327 reel marking (K-band: −1.5 to −1.3 V), identical specs except V_GS(th) range	K-band yields higher turn-off gate voltage requirement; affects gate driver compatibility in existing designs.	Choose for tighter turn-off margin where −1.5 V gate drive is available; not drop-in for L-band designs.

Compared with DMN2004LKQ-7 and BSP129H6327XTSA1, BSP149L6906HTSA1 uniquely combines 200 V rating, L-band V_GS(th) sorting, and AEC-Q101 qualification-making it the only option suitable for 24 V automotive clamping with production-matched turn-off behavior.

Availability

BSP149L6906HTSA1 is available at Aetrix Electronics and suitable for automotive load switching, industrial voltage clamping, analog current sourcing, and linear regulator pass element applications requiring stable component supply and AEC-Q101 compliance.

Supply support for BSP149L6906HTSA1 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, with global manufacturing and quality certification infrastructure.

The BSP149 belongs to Infineon's SIPMOS® small-signal transistor product line, designed specifically for automotive and industrial applications demanding high dv/dt immunity, precise threshold control, and AEC-Q101 reliability.

FAQ

What does the 'H6906' marking indicate on BSP149L6906HTSA1?

The H6906 marking identifies the tape-and-reel packaging variant and V_GS(th) band: 'H' denotes Infineon's reel code prefix, '6906' specifies L-band (−1.35 to −1.15 V) sorting, and 'HTSA1' indicates PG-SOT223 package with standard lead finish. This banding ensures consistent turn-off characteristics across units.

Can BSP149L6906HTSA1 be used in linear (non-switching) mode?

Yes-it is explicitly characterized for linear operation, with R_DS(on) vs. I_D and V_GS(th) vs. temperature curves provided. Its low g_fs variation (0.4–0.8 S) and stable R_DS(on) drift support precision current regulation and analog gain stages up to 150 °C junction temperature.

Is thermal pad (pin 4) electrically isolated in BSP149L6906HTSA1?

No-the thermal pad (pin 4) is internally connected to the drain (pin 3) and is not electrically isolated. It must be soldered to a PCB copper pour tied to the drain net to achieve the specified R_thJS = 25 K/W; floating the pad degrades thermal performance by >40%.

Does BSP149L6906HTSA1 require a gate resistor for dv/dt immunity?

No-its intrinsic 6 kV/µs dv/dt rating eliminates the need for external gate resistors in typical 24 V automotive applications. However, a 10–47 Ω series resistor is recommended when driving from high-impedance sources to damp ringing and reduce EMI in high-frequency switching.

BSP149L6906HTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: SIPMOS®

Package/Case:: TO-261-4, TO-261AA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

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-SOT223-4-21

BSP149L6906HTSA1 FAQ

1.How can I place an order for BSP149L6906HTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BSP149L6906HTSA1 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 BSP149L6906HTSA1 reliable?

The price and inventory of BSP149L6906HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSP149L6906HTSA1 is usually 5 days.

3.What payment methods are accepted for BSP149L6906HTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSP149L6906HTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BSP149L6906HTSA1?

BSP149L6906HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BSP149L6906HTSA1 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 BSP149L6906HTSA1?

For technical support, including BSP149L6906HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSP149L6906HTSA1 requirements.

6.How does Aetrix verify that BSP149L6906HTSA1 is sourced from the original manufacturer or authorized distributors?

All BSP149L6906HTSA1 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 BSP149L6906HTSA1 meets industry standards.

7.What is the process for return or replacement of BSP149L6906HTSA1?

All BSP149L6906HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BSP149L6906HTSA1, 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 BSP149L6906HTSA1 part is unused and in its original packaging.

Return procedure for BSP149L6906HTSA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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