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

Infineon Technologies BSS138NL6433HTMA1

Name: BSS138NL6433HTMA1
Brand: Infineon Technologies
SKU: BSS138NL6433HTMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BSS138NL6433HTMA1

Manufacturer:: Infineon Technologies

Category:: FETs, MOSFETs

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

Datasheet:: BSS138NL6433HTMA1.pdf

Description:: MOSFET N-CH 60V 230MA SOT23-3

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Product details

Overview

BSS138NL6433HTMA1 from Infineon Technologies is an N-channel enhancement-mode logic-level SIPMOS® small-signal MOSFET in PG-SOT-23 package, rated for 60 V V_DS, 0.23 A continuous drain current, and 3.5 Ω max R_DS(on) at V_GS = 4.5 V. It is AEC-Q101 qualified, dv/dt rated (6 kV/µs), and RoHS/halogen-free compliant - deployed in automotive body electronics for low-side load switching.

For engineers reviewing the BSS138NL6433HTMA1 datasheet, BSS138NL6433HTMA1 pinout, BSS138NL6433HTMA1 application, or BSS138NL6433HTMA1 equivalent, key selection criteria include logic-level gate drive compatibility (V_GS(th) = 0.6–1.4 V), thermal resistance (R_thJA = 350 K/W), reverse diode recovery (t_rr = 9.1–14.5 ns), and AEC-Q101 qualification for under-hood use.

Technical Context

This discrete MOSFET operates in enhancement mode with a threshold voltage range of 0.6–1.4 V, enabling direct interface with 3.3 V and 5 V logic controllers without level-shifting. Its dv/dt immunity (6 kV/µs) supports robust operation in noisy automotive environments where inductive load switching induces rapid voltage transients.

The device integrates a monolithic body diode with 0.83–1.2 V forward voltage at 0.23 A and 9.1–14.5 ns reverse recovery time, allowing efficient freewheeling in relay drivers and LED matrix multiplexers without external catch diodes.

Key Specifications

Parameter	Value and Actual Design Meaning
V_DS	60 V - supports 48 V automotive systems with margin against load-dump transients
R_DS(on) max	3.5 Ω at V_GS = 4.5 V - enables <100 mW conduction loss at 0.23 A, suitable for space-constrained PCBs
I_D cont	0.23 A at T_A = 25 °C - sufficient for driving small solenoids, LEDs, and sensor bias circuits
V_GS(th)	0.6–1.4 V - ensures reliable turn-on with 3.3 V microcontroller GPIOs
t_rr	9.1–14.5 ns - minimizes switching losses and EMI during high-frequency PWM dimming
dv/dt rating	6 kV/µs - prevents false triggering in high-noise engine control modules
Q_g	1.0–1.4 nC - allows fast switching with low gate-drive power (<10 µW at 10 kHz)

Pinout & Package

Package: PG-SOT-23 (JEDEC TO-236AB), 3-pin surface-mount with standard footprint per Infineon outline drawing Rev. 2.86.

Pin/Terminal	Circuit Role	Design Meaning
1 (Source)	Reference node for gate control and current return path	Connected to ground or low-side common; defines V_GS reference and carries full load current
2 (Gate)	Control electrode for channel formation	High-impedance input requiring minimal drive current; logic-level compatible down to 3.3 V
3 (Drain)	Output terminal for switched load connection	Connects to positive rail or inductive load; withstands 60 V and handles transient energy via integrated body diode

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive temperature range (−55 °C to +150 °C) and mechanical stress requirements
Logic-level gate drive	V_GS(th) ≤ 1.4 V ensures full enhancement with 3.3 V MCU outputs without external level shifters
dv/dt immunity	6 kV/µs rating prevents spurious turn-on during inductive kickback in motor and relay circuits
Integrated body diode	0.23 A continuous forward current and 9.1 ns t_rr support freewheeling in PWM-driven loads
Pb-free & halogen-free	Complies with RoHS Directive 2011/65/EU and IEC 61249-2-21 for eco-conscious automotive manufacturing

Applications

Automotive Door Module

LED Matrix Display Driver

Use Scenario: Switching individual door lock actuators and interior lighting circuits in centralized body control units.

IC Role / Device Role / Timing Role: Low-side switch controlling 12 V resistive/inductive loads with pulse-width modulation for soft-start sequencing.

Use Value: AEC-Q101 qualification and 6 kV/µs dv/dt immunity ensure reliability across vehicle lifecycle under vibration and thermal cycling.

Use Scenario: Row/column multiplexing in segmented automotive instrument cluster displays using constant-current LED strings.

IC Role / Device Role / Timing Role: High-speed low-side switch enabling >1 kHz scanning with minimal dead-time distortion.

Use Value: 9.1 ns reverse recovery time and 1.4 nC total gate charge reduce cross-conduction losses and improve display contrast uniformity.

Industrial Sensor Interface

USB-C Power Path Control

Use Scenario: Enabling/disabling analog sensor bias supplies (e.g., pressure, humidity) in programmable logic controllers.

IC Role / Device Role / Timing Role: Precision on/off control of 3.3 V or 5 V bias rails with sub-millisecond response and low leakage (<0.1 µA off-state).

Use Value: 0.1 µA I_D(off) at 25 °C and 5 µA at 150 °C preserves system standby current budget in battery-backed applications.

Use Scenario: Controlling V_BUS path between USB-C port and internal 5 V rail during plug insertion/removal events.

IC Role / Device Role / Timing Role: Reverse-polarity protected, low-R_DS(on) power switch with integrated body diode for automatic forward conduction.

Use Value: 3.5 Ω R_DS(on) at 4.5 V gate drive limits voltage drop to <175 mV at 50 mA, meeting USB PD specification ripple limits.

Equivalent & Alternatives

The following parts are listed as comparable options for similar N-channel logic-level MOSFET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
DMN10H400SFD-13	R_DS(on) = 3.0 Ω max at V_GS = 4.5 V; higher I_D = 0.3 A; same PG-SOT-23 package	Slightly higher current capability but no AEC-Q101 qualification	Preferred for industrial non-automotive designs needing margin on I_D and R_DS(on)
BS170	V_DS = 60 V; R_DS(on) = 5.0 Ω min at V_GS = 10 V; not logic-level (V_GS(th) = 0.8–3.0 V); TO-92 package	Requires 10 V gate drive; unsuitable for 3.3 V logic; through-hole only	Only viable for legacy through-hole prototyping with 5 V or higher gate supply

Compared with DMN10H400SFD-13 and BS170, BSS138NL6433HTMA1 uniquely combines AEC-Q101 qualification, logic-level operation, SOT-23 footprint, and dv/dt immunity - making it the sole choice for production automotive low-side switching where reliability and board space are co-constrained.

Availability

BSS138NL6433HTMA1 is available at Aetrix Electronics and suitable for automotive body electronics, LED display drivers, industrial sensor interfaces, and USB-C power path control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BSS138NL6433HTMA1 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 SIPMOS® small-signal transistor product line targets high-reliability, logic-compatible switching in automotive and industrial applications where AEC-Q101 compliance, thermal robustness, and fast switching are essential.

FAQ

Is BSS138NL6433HTMA1 suitable for 3.3 V microcontroller GPIO direct drive?

Yes. With a gate threshold voltage range of 0.6–1.4 V and guaranteed turn-on at V_GS = 3.3 V, this MOSFET fully enhances at standard 3.3 V logic levels. Its 3.5 Ω R_DS(on) at 4.5 V ensures low conduction loss even when driven from 3.3 V with marginal overdrive.

What is the maximum junction temperature and how does it affect continuous current rating?

The absolute maximum junction temperature is +150 °C. At ambient temperatures above 70 °C, the continuous drain current derates linearly from 0.23 A to 0.18 A due to thermal resistance (R_thJA = 350 K/W). Derating must be applied per Figure 2 in Rev. 2.86 datasheet.

Does BSS138NL6433HTMA1 include an integrated body diode, and what are its key parameters?

Yes. It features a monolithic parasitic body diode rated for 0.23 A continuous forward current, 0.83–1.2 V forward voltage at 0.23 A and 25 °C, and 9.1–14.5 ns reverse recovery time. This enables freewheeling in inductive loads without external diodes.

How does the dv/dt rating of 6 kV/µs impact circuit layout and snubber design?

This rating means the device resists false turn-on during rapid voltage transients up to 6 kV/µs. Layout should minimize source inductance (short, wide traces) and avoid floating gate nodes; no external snubber is required for typical 12 V/48 V automotive inductive loads per Infineon application note AN2015-04.

BSS138NL6433HTMA1 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

Technology:: MOSFET (Metal Oxide)

Drain to Source Voltage (Vdss):: 60 V

Current - Continuous Drain (Id) @ 25°C:: 230mA (Ta)

Drive Voltage (Max Rds On, Min Rds On):: 4.5V, 10V

Rds On (Max) @ Id, Vgs:: 3.5Ohm @ 230mA, 10V

Vgs(th) (Max) @ Id:: 1.4V @ 250µA

Gate Charge (Qg) (Max) @ Vgs:: 1.4 nC @ 10 V

Vgs (Max):: ±20V

Input Capacitance (Ciss) (Max) @ Vds:: 41 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

BSS138NL6433HTMA1 FAQ

1.How can I place an order for BSS138NL6433HTMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BSS138NL6433HTMA1 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 BSS138NL6433HTMA1 reliable?

The price and inventory of BSS138NL6433HTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSS138NL6433HTMA1 is usually 5 days.

3.What payment methods are accepted for BSS138NL6433HTMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSS138NL6433HTMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BSS138NL6433HTMA1?

BSS138NL6433HTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BSS138NL6433HTMA1 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 BSS138NL6433HTMA1?

For technical support, including BSS138NL6433HTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSS138NL6433HTMA1 requirements.

6.How does Aetrix verify that BSS138NL6433HTMA1 is sourced from the original manufacturer or authorized distributors?

All BSS138NL6433HTMA1 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 BSS138NL6433HTMA1 meets industry standards.

7.What is the process for return or replacement of BSS138NL6433HTMA1?

All BSS138NL6433HTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with BSS138NL6433HTMA1, 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 BSS138NL6433HTMA1 part is unused and in its original packaging.

Return procedure for BSS138NL6433HTMA1:

1.Submit a request within 90 days.

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

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