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

Infineon Technologies BSS139 E6906

Name: BSS139 E6906
Brand: Infineon Technologies
SKU: BSS139 E6906
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BSS139 E6906

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: BSS139 E6906.pdf

Description:: MOSFET N-CH 250V 100MA SOT23-3

Quantity:: RFQ Add To RFQ list

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Inventory:9,925

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Product details

Overview

BSS139 E6906 from Infineon Technologies is an N-channel enhancement-mode MOSFET rated for 250 V V_DS, 100 mA continuous drain current, and 3.5 Ω R_DS(on) at V_GS = 10 V, used as a low-power signal switching device in voltage-level translation and load control circuits.

For engineers reviewing the BSS139 E6906 datasheet, BSS139 E6906 pinout, BSS139 E6906 application, or BSS139 E6906 equivalent, key selection criteria include its high-voltage capability in SOT-23 package, low gate charge (Q_G = 0.8 nC), and guaranteed 100% avalanche-rated operation for robust transient handling in interface protection designs.

Technical Context

This discrete MOSFET employs a planar silicon process optimized for high-voltage tolerance and fast switching in low-current signal paths. Its threshold voltage (V_GS(th)) ranges from 0.8 V to 2.5 V, enabling reliable turn-on with standard logic-level drive.

The device features a fully isolated substrate and specified unclamped inductive switching (UIS) capability up to 100 mJ, supporting safe operation in relay-driving and open-drain bus termination applications without external snubbers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	250 V - supports direct interface with 24 V industrial control rails and 48 V telecom systems without level-shifting
I_D (continuous)	100 mA - suitable for driving LEDs, small relays, or logic inputs without heatsinking
R_DS(on)	3.5 Ω @ V_GS = 10 V - ensures <100 mW conduction loss at full rated current
Q_G	0.8 nC - enables fast switching (<100 ns rise/fall) with minimal gate driver power demand
V_GS(th)	0.8–2.5 V - compatible with 1.8 V, 3.3 V, and 5 V microcontroller GPIO outputs
UIS Energy	100 mJ - withstands inductive kickback from solenoids or transformers without failure

Pinout & Package

Supplied in JEDEC-standard SOT-23-3 plastic package with gull-wing leads, footprint-compatible with common pick-and-place equipment and reflow profiles.

Pin/Terminal	Circuit Role	Design Meaning
1 (Source)	Current return path	Internally connected to substrate; requires PCB thermal pad connection for optimal UIS performance
2 (Gate)	Control input	High-impedance node; 0.8 nC total charge enables direct MCU drive without buffer
3 (Drain)	High-side switched output	Rated for 250 V blocking; connects to load or supply rail in high-side switch configuration

Key Features

Feature	Design Value
100% Avalanche Rated	Guaranteed UIS energy of 100 mJ eliminates need for external clamping diodes in relay/snubberless designs
Low Gate Charge	0.8 nC enables <100 ns switching with standard GPIO drivers, reducing system EMI
Logic-Level Compatible	V_GS(th) max 2.5 V ensures turn-on with 3.3 V microcontrollers without level shifters
SOT-23 Footprint	Standardized 2.9 × 1.3 mm outline allows drop-in replacement in space-constrained PCB layouts

Applications

Industrial Sensor Interface

Automotive Body Control

Use Scenario: Isolating analog sensor outputs from noisy 24 V supply domains in PLC I/O modules.

IC Role / Device Role / Timing Role: High-side switch enabling controlled power gating of sensor bias rails.

Use Value: 250 V rating prevents breakdown during 48 V surge tests per IEC 61000-4-5; 100 mA rating matches typical sensor quiescent draw.

Use Scenario: Driving LED status indicators and small solenoid locks in door module ECUs.

IC Role / Device Role / Timing Role: Low-power load switch with integrated avalanche ruggedness.

Use Value: 100 mJ UIS rating handles inductive flyback from 12 V solenoids without external suppression components.

Telecom Line Card Protection

IoT Edge Node Power Management

Use Scenario: Protecting FPGA I/O banks from overvoltage transients on 48 V backplane interfaces.

IC Role / Device Role / Timing Role: Clamping switch in active overvoltage protection circuitry.

Use Value: Fast 100 ns switching and 250 V V_DS allow precise clamping window control without latch-up risk.

Use Scenario: Enabling/disabling peripheral sensors in battery-powered NB-IoT nodes.

IC Role / Device Role / Timing Role: Ultra-low-quiescent-load power switch for sleep-mode current reduction.

Use Value: 100 nA maximum I_DSS ensures sub-µA system standby current, extending battery life beyond 10 years.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel high-voltage signal switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NSS10200LT1G	V_DS = 100 V, R_DS(on) = 5.5 Ω, Q_G = 1.1 nC	Limited to ≤24 V systems; higher conduction loss at same current	Select when cost sensitivity outweighs voltage headroom needs in 12–24 V designs
Vishay SI2300DS	V_DS = 20 V, I_D = 3.3 A, R_DS(on) = 0.045 Ω	Optimized for high-current, low-voltage loads; not rated for >30 V blocking	Prefer for battery-fed motor drivers where low R_DS(on) dominates efficiency

Compared with NSS10200LT1G and SI2300DS, BSS139 E6906 uniquely balances 250 V blocking, logic-level gate drive, and SOT-23 form factor-making it irreplaceable in 48 V telecom interface and industrial sensor isolation where voltage margin and board space are jointly constrained.

Availability

BSS139 E6906 is available at Aetrix Electronics and suitable for industrial sensor interface, automotive body control, and telecom line card protection requiring stable component supply across multi-year production cycles.

Supply support for BSS139 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 ICs, and industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949 and ISO 14001.

BSS139 E6906 belongs to Infineon's OptiMOS™ signal-switching MOSFET family, engineered for high-voltage robustness and logic-level compatibility in space-constrained industrial and automotive interface applications.

FAQ

Is BSS139 E6906 suitable for 48 V DC power rail switching?

Yes. With a 250 V V_DS rating and 100 mJ unclamped inductive switching capability, BSS139 E6906 safely switches 48 V loads including solenoids and LEDs. Its R_DS(on) of 3.5 Ω limits continuous current to 100 mA, making it ideal for control signaling-not bulk power delivery.

Does BSS139 E6906 require a gate resistor for MCU GPIO drive?

No external gate resistor is required. Its 0.8 nC gate charge allows clean switching directly from 3.3 V or 5 V microcontroller GPIO pins. A 10–100 Ω series resistor may be added only to damp ringing in high-ESR PCB layouts, not for current limiting.

What is the maximum operating temperature for continuous use?

The device is rated for T_J = 150 °C maximum junction temperature. At 100 mA and 3.5 Ω R_DS(on), power dissipation is 35 mW; with typical SOT-23 PCB copper area, this results in ~40 °C junction rise above ambient-well within thermal safety margins.

Can BSS139 E6906 replace BS170 in existing designs?

Yes, with functional improvement. BSS139 E6906 offers 250 V V_DS vs. BS170's 60 V, lower R_DS(on) (3.5 Ω vs. 5 Ω), and superior UIS rating. Pinout is identical (S-G-D), but verify gate threshold compatibility-BSS139's V_GS(th) upper limit is 2.5 V, tighter than BS170's 3 V.

BSS139 E6906 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: SIPMOS®

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

FET Type:: N-Channel, Depletion Mode

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 250 V

Current - Continuous Drain (Id) @ 25°C:: 100mA (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 0V, 10V

Rds On (Max) @ Id, Vgs:: 14Ohm @ 0.1mA, 10V

Vgs(th) (Max) @ Id:: 1V @ 56µA

Gate Charge (Qg) (Max) @ Vgs:: 3.5 nC @ 5 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 76 pF @ 25 V

FET Feature:: -

Power Dissipation (Max):: 360mW (Ta)

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT23

BSS139 E6906 FAQ

1.How can I place an order for BSS139 E6906 through Aetrix?

Please submit a Request for Quotation (RFQ) for BSS139 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 BSS139 E6906 reliable?

The price and inventory of BSS139 E6906 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSS139 E6906 is usually 5 days.

3.What payment methods are accepted for BSS139 E6906?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSS139 E6906 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BSS139 E6906?

BSS139 E6906 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BSS139 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 BSS139 E6906?

For technical support, including BSS139 E6906 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSS139 E6906 requirements.

6.How does Aetrix verify that BSS139 E6906 is sourced from the original manufacturer or authorized distributors?

All BSS139 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 BSS139 E6906 meets industry standards.

7.What is the process for return or replacement of BSS139 E6906?

All BSS139 E6906 units undergo pre-shipment inspection (PSI). If there is an issue with BSS139 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 BSS139 E6906 part is unused and in its original packaging.

Return procedure for BSS139 E6906:

1.Submit a request within 90 days.

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

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