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

Infineon Technologies BSS169L6906HTSA1

Name: BSS169L6906HTSA1
Brand: Infineon Technologies
SKU: BSS169L6906HTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BSS169L6906HTSA1

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: BSS169L6906HTSA1.pdf

Description:: MOSFET N-CH 100V 170MA SOT23-3

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Product details

Overview

BSS169L6906HTSA1 from Infineon Technologies is an N-channel depletion-mode SIPMOS® small-signal transistor in PG-SOT-23 package, rated for 100 V V_DS, 12 Ω R_DS(on) (max), and 90 mA I_DSS at V_GS = 0 V, used in low-power analog switching, voltage-controlled current sources, and high-voltage level-shifting circuits.

For engineers reviewing the BSS169L6906HTSA1 datasheet, BSS169L6906HTSA1 pinout, BSS169L6906HTSA1 application, or BSS169L6906HTSA1 equivalent, key selection criteria include its depletion-mode operation, V_GS(th) band L (−2.3 V to −2.1 V), dv/dt rating of 6 kV/µs, and integrated reverse diode with t_rr ≤ 25.6 ns.

Technical Context

This device operates as a normally-on (depletion-mode) switch requiring negative gate bias to turn off, enabling zero-bias conduction in fail-safe or always-on signal paths. Its dv/dt rating ensures robustness against fast transient voltage spikes in inductive load switching.

The L-band V_GS(th) sorting (−2.3 V to −2.1 V) provides tighter threshold control for precision current-source designs, while the 5.3 Ω typical R_DS(on) at I_D = 50 mA supports low-loss analog pass applications under V_GS = 0 V bias.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	100 V - supports operation in 48 V industrial bus and 72 V automotive auxiliary systems without breakdown
R_DS(on), max	12 Ω at V_GS = 0 V, I_D = 50 mA - defines on-state power loss in constant-current source topologies
I_DSS, min	90 mA at V_GS = 0 V - sets baseline conduction capability for self-biased amplifier stages
V_GS(th) band	L: −2.3 V to −2.1 V - enables predictable turn-off voltage across production lots for analog bias networks
dv/dt rating	6 kV/µs - prevents spurious turn-on during high-slew-rate transients in relay driver or snubberless AC switch designs
t_rr	20.5–25.6 ns - allows use in sub-20 MHz switching nodes with minimal reverse recovery loss
C_iss	51–68 pF - determines gate drive energy requirement and high-frequency input impedance

Pinout & Package

Package: PG-SOT-23 (JEDEC TO-236AB), surface-mount, 3-pin plastic package with standard footprint and thermal pad omission.

Pin/Terminal	Circuit Role	Design Meaning
1 (Drain)	High-side current path terminal	Connected to positive rail or inductive load; handles full V_DS stress and pulsed I_D,pulse up to 0.68 A
2 (Gate)	Control electrode for depletion-mode channel	Receives negative bias (≤ −2.1 V) to pinch off; high-impedance node requiring <10 nA leakage control
3 (Source)	Reference and return path	Common node for gate reference and diode cathode; ties to system ground or bias return in current-source configurations

Key Features

Feature	Design Value
Depletion-mode operation	Conducts at V_GS = 0 V - eliminates need for external bias supply in always-on analog switches
V_GS(th) band sorting (L)	−2.3 V to −2.1 V tolerance - reduces calibration overhead in precision current mirrors and voltage-controlled oscillators
dv/dt immunity	6 kV/µs rating - enables direct drive of inductive loads without external snubbers in space-constrained modules
Integrated body diode	25.6 ns t_rr, 0.79–1.2 V V_SD - supports bidirectional current flow in half-wave rectifier or flyback clamp functions
Pb-free & RoHS compliant	Lead-plated terminals per MIL-STD-883 Class 0 ESD - meets IPC-J-STD-020 moisture sensitivity and assembly reliability requirements

Applications

LED Constant-Current Bias

High-Voltage Level Shifter

Use Scenario: Driving single or parallel LEDs from 24–48 V rails with stable current independent of supply variation.

IC Role / Device Role / Timing Role: Depletion-mode pass transistor acting as adjustable current sink controlled by gate voltage.

Use Value: Delivers 90 mA nominal I_DSS with <±10% drift over temperature, eliminating need for op-amp feedback loop.

Use Scenario: Translating logic-level signals (0–3.3 V) to interface with 48 V or 72 V control nodes in industrial PLC I/O modules.

IC Role / Device Role / Timing Role: Voltage-translating switch where source follows input and drain references high-voltage rail.

Use Value: Supports >10 MHz edge rates due to 25.6 ns t_rr and 68 pF C_iss, minimizing propagation delay skew.

Analog Signal Switch

Failsafe Power Monitor

Use Scenario: Routing audio or sensor signals in battery-powered instrumentation where standby current must be near-zero.

IC Role / Device Role / Timing Role: Normally-on analog switch disabled only when negative gate bias is applied.

Use Value: Achieves <0.1 µA I_D(off) at V_GS = −10 V, reducing quiescent power in sleep-mode systems.

Use Scenario: Monitoring main DC bus voltage in telecom power supplies, asserting fault flag if rail collapses unexpectedly.

IC Role / Device Role / Timing Role: Self-powered detector using I_DSS current to bias comparator input when V_IN > 0 V.

Use Value: Operates without auxiliary supply-conducts at V_GS = 0 V, enabling "power-loss present" detection with no external bias.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMN2004LK-7	V_DS = 20 V, R_DS(on) = 3.5 Ω (typ), enhancement-mode	Requires positive gate drive; unsuitable for zero-bias conduction	Select only if circuit uses active gate control and operates below 20 V bus
BS250	V_DS = 60 V, R_DS(on) = 15 Ω (max), V_GS(th) ≈ −3 V, TO-92	Larger through-hole package; wider V_GS(th) tolerance (±0.5 V)	Prefer for prototyping or legacy through-hole designs where 60 V rating suffices

Compared with DMN2004LK-7 and BS250, BSS169L6906HTSA1 uniquely combines 100 V rating, tight L-band V_GS(th), SOT-23 footprint, and true depletion-mode behavior-making it irreplaceable in high-voltage, zero-bias, space-constrained analog control.

Availability

BSS169L6906HTSA1 is available at Aetrix Electronics and suitable for LED biasing, high-voltage level shifting, analog signal switching, and failsafe power monitoring requiring stable component supply across industrial and telecom design cycles.

Supply support for BSS169L6906HTSA1 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 discrete power devices with global manufacturing and qualification standards.

The SIPMOS® small-signal transistor product line targets precision analog switching, voltage-controlled current sources, and high-reliability industrial interface circuits where depletion-mode behavior and dv/dt immunity are critical.

FAQ

What does the 'L6906' suffix indicate in BSS169L6906HTSA1?

The 'L6906' denotes Infineon's tape-and-reel packaging code for the L-band V_GS(th) sorted version (−2.3 V to −2.1 V), with 3000 units per reel and Pb-free plating. It confirms factory-sorted threshold matching and RoHS compliance per DIN IEC 68-1 55/150/56.

Can BSS169L6906HTSA1 replace an enhancement-mode MOSFET in a gate-driven switch?

No-it is depletion-mode and conducts at V_GS = 0 V, so applying 0 V to gate turns it fully on. To replace an enhancement-mode device, the circuit must be redesigned to use negative gate bias for turn-off and accept inherent conduction at power-up.

Is the body diode suitable for continuous freewheeling in DC-DC converters?

Yes-the integrated diode supports 0.17 A continuous forward current and 0.68 A pulsed current, with 0.79–1.2 V V_SD at 0.17 A. However, its 25.6 ns t_rr limits use to ≤500 kHz synchronous buck topologies without significant reverse recovery loss.

How does the dv/dt rating of 6 kV/µs improve reliability in relay driver circuits?

This rating means the device resists false turn-on when subjected to rapid voltage transients across drain-source-common when driving inductive relay coils. It eliminates need for RC snubbers, reducing component count and PCB area in compact industrial control modules.

BSS169L6906HTSA1 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):: 100 V

Current - Continuous Drain (Id) @ 25°C:: 170mA (Ta)

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

Rds On (Max) @ Id, Vgs:: 6Ohm @ 170mA, 10V

Vgs(th) (Max) @ Id:: 1.8V @ 50µA

Gate Charge (Qg) (Max) @ Vgs:: 2.8 nC @ 7 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 68 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

BSS169L6906HTSA1 FAQ

1.How can I place an order for BSS169L6906HTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BSS169L6906HTSA1 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 BSS169L6906HTSA1 reliable?

The price and inventory of BSS169L6906HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSS169L6906HTSA1 is usually 5 days.

3.What payment methods are accepted for BSS169L6906HTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSS169L6906HTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BSS169L6906HTSA1?

BSS169L6906HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BSS169L6906HTSA1 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 BSS169L6906HTSA1?

For technical support, including BSS169L6906HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSS169L6906HTSA1 requirements.

6.How does Aetrix verify that BSS169L6906HTSA1 is sourced from the original manufacturer or authorized distributors?

All BSS169L6906HTSA1 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 BSS169L6906HTSA1 meets industry standards.

7.What is the process for return or replacement of BSS169L6906HTSA1?

All BSS169L6906HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BSS169L6906HTSA1, 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 BSS169L6906HTSA1 part is unused and in its original packaging.

Return procedure for BSS169L6906HTSA1:

1.Submit a request within 90 days.

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

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