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

Infineon Technologies BSP149 E6327

Name: BSP149 E6327
Brand: Infineon Technologies
SKU: BSP149 E6327
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BSP149 E6327

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: BSP149 E6327.pdf

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

Quantity:: RFQ Add To RFQ list

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Inventory:8,653

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Product details

Overview

BSP149 E6327 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 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 E6327 datasheet, BSP149 E6327 pinout, BSP149 E6327 application, or BSP149 E6327 equivalent, key selection criteria include its depletion-mode operation enabling zero-bias turn-on, dv/dt ruggedness up to 6 kV/µs, V_GS(th) band sorting (H6327 reel), and SOT-223 thermal performance with R_thJS = 25 K/W.

Technical Context

The BSP149 operates as a normally-on (depletion-mode) device requiring negative gate bias to pinch off conduction-enabling fail-safe startup in power sequencing and bias rail generation. Its dv/dt rating of 6 kV/µs ensures robustness against parasitic turn-on during fast voltage transients in inductive loads.

Thermal design leverages the PG-SOT223 package's low junction-to-soldering-point resistance (25 K/W) and integrated reverse diode with 0.9–1.2 V forward drop at 0.66 A, supporting synchronous rectification and flyback snubbing without external diodes.

Key Specifications

Parameter	Value and Actual Design Meaning
V_BR(DSS)	200 V - Withstands 200 V drain-source blocking before avalanche; supports 160 V system rails with margin.
R_DS(on), max	3.5 Ω at V_GS = 0 V - Defines on-state loss in depletion-mode operation; enables ~0.14 W conduction loss at 0.2 A.
I_DSS, min	0.14 A - Minimum saturation current at V_GS = 0 V; sets baseline load capability without gate drive.
dv/dt rating	6 kV/µs - Immune to false triggering under rapid voltage transients common in motor drives and SMPS.
V_GS(th)	−2.1 to −1.4 V - Threshold range determines gate bias needed to fully turn off; H6327 reels are sorted into J–N bands.
Q_g, total	11–14 nC - Total gate charge impacts switching speed and driver sizing; enables <100 ns turn-off with 6 Ω gate resistor.
R_thJS	25 K/W - Junction-to-soldering-point thermal resistance allows direct PCB copper pad heat sinking in compact layouts.

Pinout & Package

PG-SOT223 package with exposed drain tab (Pin 4) for thermal and electrical connection; 3-pin configuration with source (Pin 1), gate (Pin 2), and drain (Pin 4). Pin 3 is internally connected to drain and serves as secondary solder point.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Source	Reference node for gate control; tied to ground or low-side return in most depletion-mode configurations.
Pin 2	Gate	Control terminal requiring negative bias (≤ −1.4 V) to achieve full cutoff; high-impedance input (I_GSS ≤ 10 nA).
Pin 3	Drain (NC)	Internally bonded to Pin 4; provides mechanical stability and additional thermal path when soldered.
Pin 4	Drain	Main power output terminal and thermal interface; must be soldered to ≥6 cm² copper area for rated 1.8 W dissipation.

Key Features

Feature	Design Value
Depletion-mode operation	Enables zero-gate-voltage conduction for fail-safe power-up in bias supplies and LED string drivers.
AEC-Q101 qualification	Validated for automotive under-hood applications including body control modules and lighting ECUs.
V_GS(th) band sorting (H6327)	Reels labeled H6327 contain transistors within one V_GS(th) band (e.g., J: −1.2 to −1.0 V), improving batch consistency in analog biasing.
Integrated reverse diode	Rated for 0.66 A continuous forward current and 42–65 ns t_rr, eliminating need for external freewheeling diodes in clamp circuits.
Pb-free & halogen-free	Complies with RoHS and IEC61249-2-21, supporting eco-design requirements for industrial and automotive OEMs.

Applications

Automotive LED Headlamp Driver

Industrial Power Supply Hold-Up

Use Scenario: Maintains headlamp illumination during engine cranking when battery voltage dips to 6 V.

IC Role / Device Role / Timing Role: Depletion-mode switch providing automatic conduction without auxiliary bias supply.

Use Value: Eliminates need for dedicated LDO or charge pump to sustain gate drive during brownout events.

Use Scenario: Extends output hold-up time in 24 V industrial SMPS during brief AC line interruptions.

IC Role / Device Role / Timing Role: High-voltage depletion transistor acting as active OR-ing switch between main and backup capacitors.

Use Value: Achieves >10 ms hold-up with 200 V rating and low R_DS(on), reducing capacitor size by 30% vs. resistive solutions.

Motor Control dv/dt Snubber

Fail-Safe Bias Rail Generator

Use Scenario: Suppresses voltage spikes across IGBT gates during fast switching in BLDC inverters.

IC Role / Device Role / Timing Role: dv/dt-rated clamp transistor absorbing transient energy via controlled avalanche.

Use Value: Withstands 6 kV/µs transients without oscillation or latch-up, replacing RC snubbers in space-constrained designs.

Use Scenario: Generates stable 12 V bias for microcontroller reset circuitry in always-on vehicle modules.

IC Role / Device Role / Timing Role: Self-biasing depletion transistor regulating current into Zener reference diode.

Use Value: Delivers regulated 12 V ±5% over −40 to +125 °C using only two passive components and no active feedback.

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 V_BR(DSS), higher R_DS(on) (10 Ω), no AEC-Q101 qualification	Limited to non-automotive 48 V systems; lacks dv/dt rating and V_GS(th) banding	Select when lower voltage rating suffices and automotive qualification is unnecessary.
BSP139	100 V V_BR(DSS), same PG-SOT223 package, but no H6327 band sorting or AEC-Q101	Suitable for cost-sensitive consumer power management; not validated for automotive temperature cycling	Choose for prototyping or non-automotive production where 200 V rating is not required.

Compared with IXTP01N100D and BSP139, the BSP149 E6327 uniquely combines 200 V rating, AEC-Q101 compliance, and factory-sorted V_GS(th) bands-making it the only option qualified for production automotive lighting and power hold-up where parametric consistency and transient immunity are mandatory.

Availability

BSP149 E6327 is available at Aetrix Electronics and suitable for automotive LED drivers, industrial power hold-up circuits, and motor control snubbers requiring stable component supply with guaranteed AEC-Q101 compliance and traceable lot-level V_GS(th) data.

Supply support for BSP149 E6327 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, engineered for high-reliability depletion-mode switching in automotive and industrial power systems where fail-safe behavior and dv/dt immunity are critical.

FAQ

What is the maximum continuous drain current for BSP149 E6327 at 70 °C ambient?

The maximum continuous drain current is 0.53 A at T_A = 70 °C with proper PCB copper area (6 cm²), per the derating curve on page 4 of the Rev. 2.1 datasheet. This reflects thermal limits-not electrical limits-as R_DS(on) remains stable up to 150 °C junction temperature.

Does BSP149 E6327 require a negative gate voltage to operate safely?

Yes-BSP149 E6327 is a depletion-mode device that conducts at V_GS = 0 V and requires V_GS ≤ −1.4 V (typical) to fully turn off. Gate drive circuits must provide negative bias relative to source, with absolute maximum V_GS = ±20 V.

How does the H6327 reel marking affect circuit performance?

H6327 indicates the reel contains BSP149 units sorted into a single V_GS(th) band (e.g., J, K, L, M, or N), ensuring tight threshold matching across a production batch. This improves consistency in analog bias networks and reduces calibration effort in precision current sources.

Can BSP149 E6327 replace a JFET in high-voltage analog circuits?

Yes-its depletion-mode behavior, low gate leakage (<10 nA), and 200 V rating make it suitable for high-impedance analog switches and constant-current sources where JFETs were traditionally used. However, its higher C_iss (326–430 pF) may limit bandwidth compared to small-signal JFETs.

BSP149 E6327 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

BSP149 E6327 FAQ

1.How can I place an order for BSP149 E6327 through Aetrix?

Please submit a Request for Quotation (RFQ) for BSP149 E6327 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 E6327 reliable?

The price and inventory of BSP149 E6327 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSP149 E6327 is usually 5 days.

3.What payment methods are accepted for BSP149 E6327?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSP149 E6327 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BSP149 E6327?

BSP149 E6327 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BSP149 E6327 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 E6327?

For technical support, including BSP149 E6327 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSP149 E6327 requirements.

6.How does Aetrix verify that BSP149 E6327 is sourced from the original manufacturer or authorized distributors?

All BSP149 E6327 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 E6327 meets industry standards.

7.What is the process for return or replacement of BSP149 E6327?

All BSP149 E6327 units undergo pre-shipment inspection (PSI). If there is an issue with BSP149 E6327, 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 E6327 part is unused and in its original packaging.

Return procedure for BSP149 E6327:

1.Submit a request within 90 days.

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

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