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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Infineon Technologies BSP50E6327HTSA1

Name: BSP50E6327HTSA1
Brand: Infineon Technologies
SKU: BSP50E6327HTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BSP50E6327HTSA1

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

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

Datasheet:: BSP50E6327HTSA1.pdf

Description:: TRANS NPN DARL 45V 1A SOT223-4

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BSP50E6327HTSA1 from Infineon Technologies is an NPN silicon Darlington transistor in SOT-223 package, designed for medium-power switching applications with high current gain (h_FE = 1000–2000), low V_CE(sat) (1.3 V @ I_C = 500 mA, I_B = 0.5 mA), and V_CEO = 45 V. It supports automotive-grade reliability per AEC-Q101 and operates up to T_j = 150 °C.

For engineers reviewing the BSP50E6327HTSA1 datasheet, BSP50E6327HTSA1 pinout, BSP50E6327HTSA1 application, or BSP50E6327HTSA1 equivalent, key selection factors include DC current gain stability at I_C = 150–500 mA, thermal resistance R_thJS ≤ 17 K/W, saturation voltage behavior under pulsed drive, and complementary PNP pairing with BSP60 series.

Technical Context

This Darlington pair integrates two NPN transistors in cascade to achieve high h_FE while maintaining single-base control. Its internal structure enables low base drive requirements and robust switching performance at collector currents up to 1 A DC and 2 A peak (t_p ≤ 10 ms).

The device features V_CE(sat) ≤ 1.8 V at I_C = 1 A / I_B = 1 mA and f_T = 200 MHz (typ.), supporting fast turn-on (t_on = 400 ns) and moderate turn-off (t_off = 1500 ns) in inductive load switching circuits.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	45 V - Maximum safe collector-emitter voltage before breakdown under open-base condition
h_FE	1000–2000 - High DC current gain enables microampere-level base drive for 500 mA collector load
V_CE(sat)	1.3 V (max) @ I_C = 500 mA, I_B = 0.5 mA - Low saturation voltage reduces conduction loss in power switches
P_tot	1.5 W @ T_S ≤ 124 °C - Total dissipation limit defines heatsink requirement for continuous operation
R_thJS	≤ 17 K/W - Junction-to-solder-point thermal resistance determines PCB copper area needed for thermal management
f_T	200 MHz (typ.) @ I_C = 100 mA, V_CE = 5 V - Transition frequency sets upper bound for small-signal amplification bandwidth
t_off	1500 ns (typ.) - Turn-off delay impacts minimum switching frequency and energy loss in PWM-driven loads

Pinout & Package

SOT-223 package with 4-pin configuration: Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter, Pin 4 = Collector (tab). The exposed collector tab provides low-inductance, high-current path and serves as primary thermal interface to PCB copper pour.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Base	Control input; requires current-limited drive to avoid exceeding I_B(max) = 100 mA
Pin 2	Collector	Main high-current output node; electrically and thermally connected to Pin 4
Pin 3	Emitter	Reference terminal for load return path; common connection point for emitter resistor biasing
Pin 4	Collector (Tab)	Exposed metal pad; must be soldered to ≥ 1 cm² copper area for thermal compliance and current handling

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive electronics per stress test requirements including HTOL, TC, HTRB
High h_FE (1000–2000)	Enables direct drive from MCU GPIOs without external pre-driver stages
Low V_CE(sat) (≤1.8 V)	Reduces power loss by >30% vs. standard NPN at I_C = 1 A, improving efficiency in relay/LED drivers
RoHS-compliant SOT-223	Lead-free termination and halogen-free molding compound meet EU environmental directives
Complementary PNP pairing	Direct functional match with BSP60 series for push-pull or H-bridge configurations

Applications

Automotive Relay Drivers

Industrial Solenoid Controls

Use Scenario: Driving 12 V automotive relays (e.g., HVAC, lighting, fuel pump) from 3.3 V/5 V microcontrollers.

IC Role / Device Role: Medium-power NPN Darlington switch providing galvanic isolation and current amplification between logic-level input and inductive load.

Use Value: Eliminates need for discrete driver stages; V_CE(sat) ≤ 1.3 V ensures < 0.65 W loss at 500 mA, enabling compact PCB layout without active cooling.

Use Scenario: Controlling 24 V industrial solenoids in PLC I/O modules with ambient temperatures up to 85 °C.

IC Role / Device Role: High-gain switching element interfacing fieldbus controller outputs to electromagnetic actuator coils.

Use Value: h_FE ≥ 1000 allows reliable turn-on with ≤ 500 µA base current, reducing MCU port loading and simplifying level-shifting design.

DC Motor Direction Control

LED Array Power Switching

Use Scenario: Half-bridge leg in bidirectional 12 V brushed DC motor control for automotive seat/mirror actuators.

IC Role / Device Role: Low-side switching transistor in H-bridge topology, paired with BSP60 PNP for complementary high-side drive.

Use Value: Matched V_CEO/V_CBO ratings and thermal characteristics with BSP60 enable balanced switching timing and reduced shoot-through risk.

Use Scenario: On/off control of high-brightness LED strings (e.g., automotive interior lighting, signage) requiring >500 mA steady-state current.

IC Role / Device Role: Constant-current switch regulating LED current via emitter resistor feedback and Darlington gain stability.

Use Value: Tight h_FE tolerance (1000–2000) ensures consistent LED brightness across production batches without individual calibration.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN Darlington switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCP56-10T1G	V_CEO = 80 V, h_FE = 250–630, SOT-223, lower gain but higher voltage rating	Better suited for 48 V industrial systems; insufficient gain for direct MCU drive at low I_B	Select when higher breakdown margin is critical and external base amplification is acceptable
BSP52E6327HTSA1	V_CEO = 80 V, same package/pinout, h_FE = 1000–2000, higher voltage headroom	Drop-in replacement where 45 V rating is marginal; identical thermal and drive characteristics	Choose for upgraded voltage safety margin without layout or firmware changes

Compared with BCP56-10T1G, BSP50E6327HTSA1 delivers 3× higher DC gain for low-base-drive designs but trades 35 V in V_CEO; versus BSP52, it offers identical gain and thermal behavior at reduced voltage rating-ideal for cost-optimized 12–24 V systems.

Availability

BSP50E6327HTSA1 is available at Aetrix Electronics and suitable for automotive relay drivers, industrial solenoid controls, DC motor direction control, and LED array power switching requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BSP50E6327HTSA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive electronics, and industrial control ICs, with global manufacturing and quality certification infrastructure.

The BSP50 series belongs to Infineon's bipolar power transistor product line, engineered specifically for AEC-Q101-compliant medium-power switching in automotive body electronics and industrial automation.

FAQ

What is the maximum continuous collector current for BSP50E6327HTSA1?

The absolute maximum continuous collector current is 1 A at T_S ≤ 124 °C. Derating is required above this case temperature; at 150 °C junction temperature, the usable DC current drops to approximately 650 mA based on thermal resistance and power dissipation limits.

Can BSP50E6327HTSA1 be used in linear amplifier applications?

No-it is optimized for switching operation, not linear amplification. Its Darlington structure introduces significant V_BE(sat) (~2.2 V) and nonlinear h_FE variation with I_C, making it unsuitable for Class-A or AB audio amplifiers where linearity and low distortion are required.

Is the SOT-223 pinout compatible with other Infineon Darlington transistors?

Yes-BSP50, BSP51, BSP52, and their PNP complements BSP60–BSP62 share identical SOT-223 pinout: Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter, Pin 4 = Collector (tab). This enables footprint reuse across voltage grades and polarity types.

Does BSP50E6327HTSA1 require an external base resistor?

Yes-a series base resistor is mandatory to limit I_B within 100 mA absolute maximum. For typical 5 V MCU drive with h_FE = 1500 and I_C = 500 mA, a 4.7 kΩ resistor ensures I_B ≈ 0.9 mA, well within safe operating area and avoiding thermal runaway.

BSP50E6327HTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: NPN - Darlington

Current - Collector (Ic) (Max):: 1 A

Voltage - Collector Emitter Breakdown (Max):: 45 V

Vce Saturation (Max) @ Ib, Ic:: 1.8V @ 1mA, 1A

Current - Collector Cutoff (Max):: 10µA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 2000 @ 500mA, 10V

Power - Max:: 1.5 W

Frequency - Transition:: 200MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT223-4

BSP50E6327HTSA1 FAQ

1.How can I place an order for BSP50E6327HTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BSP50E6327HTSA1 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 BSP50E6327HTSA1 reliable?

The price and inventory of BSP50E6327HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSP50E6327HTSA1 is usually 5 days.

3.What payment methods are accepted for BSP50E6327HTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSP50E6327HTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BSP50E6327HTSA1?

BSP50E6327HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BSP50E6327HTSA1 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 BSP50E6327HTSA1?

For technical support, including BSP50E6327HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSP50E6327HTSA1 requirements.

6.How does Aetrix verify that BSP50E6327HTSA1 is sourced from the original manufacturer or authorized distributors?

All BSP50E6327HTSA1 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 BSP50E6327HTSA1 meets industry standards.

7.What is the process for return or replacement of BSP50E6327HTSA1?

All BSP50E6327HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BSP50E6327HTSA1, 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 BSP50E6327HTSA1 part is unused and in its original packaging.

Return procedure for BSP50E6327HTSA1:

1.Submit a request within 90 days.

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

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