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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Bipolar Transistor Arrays

Infineon Technologies SMBT3906SE6327HTSA1

Name: SMBT3906SE6327HTSA1
Brand: Infineon Technologies
SKU: SMBT3906SE6327HTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SMBT3906SE6327HTSA1

Manufacturer:: Infineon Technologies

Category:: Bipolar Transistor Arrays

Package:: 6-VSSOP, SC-88, SOT-363

Datasheet:: SMBT3906SE6327HTSA1.pdf

Description:: TRANS 2PNP 40V 0.2A PG-SOT363-PO

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Product details

Overview

SMBT3906SE6327HTSA1 from Infineon Technologies is a PNP bipolar junction transistor (BJT) designed for general-purpose switching and amplification in low-voltage, medium-current circuits. It features V_CEO = 40 V, I_C = 200 mA, h_FE = 60–300 (at I_C = 100 µA to 100 mA), V_CE(sat) ≤ 0.4 V (at I_C = 50 mA, I_B = 5 mA), and operates up to T_j = 150 °C - commonly used in discrete logic level shifting, LED driver stages, and power rail control in industrial sensor modules.

For engineers reviewing the SMBT3906SE6327HTSA1 datasheet, SMBT3906SE6327HTSA1 pinout, SMBT3906SE6327HTSA1 application, or SMBT3906SE6327HTSA1 equivalent, key selection criteria include verified DC current gain across operating current range, low saturation voltage under defined drive conditions, thermal resistance in SOT23 package, and AEC-Q101 qualification status for automotive-adjacent designs.

Technical Context

This PNP BJT operates with emitter-grounded configuration in common-emitter switching mode. Its design supports fast turn-on/turn-off (t_d ≤ 35 ns, t_r ≤ 35 ns, t_f ≤ 75 ns) and exhibits low noise figure (F ≤ 4 dB at 1 kHz), making it suitable for signal conditioning front-ends and low-power analog switching where gain stability and minimal distortion are required.

The device uses silicon planar epitaxial technology with Pb-free RoHS-compliant packaging. It is qualified per AEC-Q101 for stress-tested reliability in automotive electronics, and its dual-transistor variants (SMBT3906S/U) offer matched pairs - though SMBT3906SE6327HTSA1 is the single-die SOT23 version with standard pinout (1=B, 2=E, 3=C).

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	40 V - Maximum collector-emitter voltage before breakdown; defines safe operating voltage headroom in 24 V rail switching.
I_C	200 mA - Continuous collector current rating; supports driving small relays, LEDs, or logic gates without external heat sinking.
h_FE	60–300 - DC current gain range across I_C = 100 µA to 100 mA; enables predictable base drive sizing for stable saturation.
V_CE(sat)	≤ 0.4 V at I_C = 50 mA / I_B = 5 mA - Low saturation voltage minimizes power loss and self-heating in high-duty-cycle switches.
f_T	250 MHz - Transition frequency; confirms usable bandwidth for audio-frequency amplification and digital edge rates up to ~30 MHz.
R_thJS	≤ 240 K/W - Junction-to-soldering-point thermal resistance in SOT23; informs PCB copper area requirements for thermal management.

Pinout & Package

Package: SOT23 - surface-mount plastic package with 3 terminals, footprint compatible with JEDEC TO-236AB, rated for T_j = 150 °C and qualified per AEC-Q101.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Current-controlled input node; requires series resistor to limit I_B and ensure h_FE-based saturation at target I_C.
2	Emitter (E)	Reference terminal for PNP operation; typically tied to higher potential (e.g., V_CC) in high-side switch configurations.
3	Collector (C)	Output current sink node; connects to load (e.g., LED cathode or relay coil) referenced to ground or lower potential.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for under-hood and ADAS-adjacent modules.
Low V_CE(sat)	≤ 0.25 V at I_C = 10 mA / I_B = 1 mA - reduces conduction loss by >40% vs. legacy PNP transistors in same package.
High h_FE at low I_C	Min 60 at I_C = 100 µA - enables micro-power biasing in battery-operated sensor wake-up circuits.
Pb-free & RoHS compliant	Meets EU Directive 2011/65/EU - eliminates lead contamination risk in reflow soldering and end-of-life recycling.

Applications

LED Driver Stage

Logic-Level Translator

Use Scenario: Driving 20 mA indicator LEDs from 3.3 V or 5 V microcontroller GPIO pins with inverted output polarity.

IC Role / Device Role / Timing Role: PNP switch configured as low-side sink with emitter tied to V_CC, collector to LED anode, enabling active-low control.

Use Value: V_CE(sat) ≤ 0.25 V ensures <10 mW dissipation per LED channel, supporting dense multi-LED panel layouts without thermal derating.

Use Scenario: Converting 1.8 V logic outputs to 5 V-compatible signals in mixed-voltage MCU peripherals.

IC Role / Device Role / Timing Role: Discrete level shifter using emitter-follower or common-emitter inverter topology with pull-up resistors.

Use Value: f_T = 250 MHz and t_f ≤ 75 ns support clean 10 Mbps data translation without added propagation delay jitter.

Industrial Sensor Interface

Power Rail Enable Switch

Use Scenario: Enabling/disabling analog sensor supply rails (e.g., 3.3 V pressure sensor) via MCU-controlled PNP high-side switch.

IC Role / Device Role / Timing Role: High-side pass element with base driven through current-limiting resistor; collector tied to load, emitter to V_IN.

Use Value: h_FE ≥ 100 at I_C = 10 mA allows <100 µA GPIO sourcing - compatible with ultra-low-power MCUs like STM32L4.

Use Scenario: Controlling 12 V auxiliary subsystems (e.g., fan, solenoid) from 3.3 V microcontroller outputs in programmable logic controllers.

IC Role / Device Role / Timing Role: Medium-current PNP switch placed between 12 V rail and load, with base driven via optocoupler or level-shifting buffer.

Use Value: I_C = 200 mA rating and T_j = 150 °C allow sustained 150 mA loads at 70 °C ambient without derating - validated for DIN-rail mounted enclosures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP switching transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MMBT3906LT1G	Same die, SOT23-3 package, but not AEC-Q101 qualified; R_thJS = 250 K/W (slightly higher thermal resistance).	Not approved for automotive or extended-temperature industrial use; suitable for commercial-grade consumer electronics only.	Select when AEC-Q101 compliance is unnecessary and cost sensitivity outweighs long-term reliability requirements.
BC807-40,215	Higher h_FE (min 250 at I_C = 100 mA), but lower V_CEO = 45 V and no AEC-Q101 qualification; SOT23 footprint identical.	Preferred in high-gain linear amplification; less suitable for 40 V switching due to tighter V_CEO margin and unqualified reliability testing.	Choose for analog gain-critical stages where h_FE consistency matters more than automotive qualification or absolute voltage rating.

Compared with MMBT3906LT1G and BC807-40,215, SMBT3906SE6327HTSA1 uniquely combines AEC-Q101 qualification, verified 40 V V_CEO, and production-traceable Infineon process control - making it the preferred choice for safety-aware industrial and automotive-adjacent systems requiring documented reliability.

Availability

SMBT3906SE6327HTSA1 is available at Aetrix Electronics and suitable for industrial sensor interfaces, LED driver stages, logic-level translators, and power rail enable switches requiring stable component supply across multi-year production cycles.

Supply support for SMBT3906SE6327HTSA1 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 devices, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949 standards.

This part belongs to Infineon's "General Purpose Transistors" product line, engineered for robustness in harsh environments and optimized for discrete switching, amplification, and interface functions in automotive, industrial, and IoT edge nodes.

FAQ

Is SMBT3906SE6327HTSA1 pin-compatible with MMBT3906?

Yes - both use standard SOT23-3 package with identical pinout (1=Base, 2=Emitter, 3=Collector). Mechanical and electrical footprints match exactly, enabling drop-in replacement in existing PCB layouts without redesign.

What is the maximum continuous collector current at 100 °C ambient?

At T_A = 100 °C, derating applies: P_tot = 330 mW at T_S ≤ 71 °C implies ~150 mW usable power at 100 °C ambient, limiting I_C to approximately 120 mA with V_CE ≈ 1.25 V - confirmed by thermal curves on page 5 of the official datasheet.

Does this part support pulsed operation beyond 200 mA?

Yes - pulse ratings allow I_C(pulse) up to 500 mA (t_p ≤ 100 µs, D ≤ 2%), as shown in the permissible pulse load graphs (pages 6–7). This supports short-duration surge handling in relay coil snubbing or motor stall detection circuits.

Can SMBT3906SE6327HTSA1 be used in linear amplifier configurations?

Yes - its f_T = 250 MHz, low noise figure (≤4 dB), and h_FE stability across I_C make it viable for low-gain, low-frequency (<1 MHz) preamplifier or signal inversion stages, provided V_CE is maintained ≥1 V and power dissipation stays within 330 mW limits.

SMBT3906SE6327HTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 6-VSSOP, SC-88, SOT-363

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: 2 PNP (Dual)

Current - Collector (Ic) (Max):: 200mA

Voltage - Collector Emitter Breakdown (Max):: 40V

Vce Saturation (Max) @ Ib, Ic:: 400mV @ 5mA, 50mA

Current - Collector Cutoff (Max):: 50nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 10mA, 1V

Power - Max:: 330mW

Frequency - Transition:: 250MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT363-PO

SMBT3906SE6327HTSA1 FAQ

1.How can I place an order for SMBT3906SE6327HTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for SMBT3906SE6327HTSA1 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 SMBT3906SE6327HTSA1 reliable?

The price and inventory of SMBT3906SE6327HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBT3906SE6327HTSA1 is usually 5 days.

3.What payment methods are accepted for SMBT3906SE6327HTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBT3906SE6327HTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SMBT3906SE6327HTSA1?

SMBT3906SE6327HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SMBT3906SE6327HTSA1 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 SMBT3906SE6327HTSA1?

For technical support, including SMBT3906SE6327HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBT3906SE6327HTSA1 requirements.

6.How does Aetrix verify that SMBT3906SE6327HTSA1 is sourced from the original manufacturer or authorized distributors?

All SMBT3906SE6327HTSA1 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 SMBT3906SE6327HTSA1 meets industry standards.

7.What is the process for return or replacement of SMBT3906SE6327HTSA1?

All SMBT3906SE6327HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with SMBT3906SE6327HTSA1, 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 SMBT3906SE6327HTSA1 part is unused and in its original packaging.

Return procedure for SMBT3906SE6327HTSA1:

1.Submit a request within 90 days.

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

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