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

Infineon Technologies BSP61E6327HTSA1

Name: BSP61E6327HTSA1
Brand: Infineon Technologies
SKU: BSP61E6327HTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BSP61E6327HTSA1

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

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

Datasheet:: BSP61E6327HTSA1.pdf

Description:: TRANS PNP DARL 60V 1A SOT223-4

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BSP61E6327HTSA1 from Infineon Technologies is a PNP silicon Darlington transistor designed for medium-power switching applications, featuring 60 V collector-emitter breakdown voltage (V_(BR)CEO), 1 A continuous collector current (I_C), and low 1.3 V collector-emitter saturation voltage (V_CEsat) at I_C = 500 mA / I_B = 0.55 mA. It is commonly used in automotive body control modules for driving relays and lamps.

For engineers reviewing the BSP61E6327HTSA1 datasheet, BSP61E6327HTSA1 pinout, BSP61E6327HTSA1 application, or BSP61E6327HTSA1 equivalent, key selection criteria include V_(BR)CEO, DC current gain (h_FE ≥ 1000), thermal resistance (R_thJS ≤ 17 K/W), SOT223 package compatibility, and AEC-Q101 qualification status.

Technical Context

This Darlington pair integrates two cascaded PNP transistors to achieve high DC current gain (h_FE = 1000–2000 at I_C = 150–500 mA) while maintaining low V_CEsat and robust thermal performance. Its complementary NPN counterparts are BSP50–BSP52 series.

The device operates with V_EB ≤ 5 V and supports pulse operation up to 2 A (t_p ≤ 10 ms). Junction temperature is rated to 150 °C, and it meets RoHS and AEC-Q101 reliability standards for automotive use.

Key Specifications

Parameter	Value and Actual Design Meaning
V_(BR)CEO	60 V - Maximum safe collector-emitter voltage before avalanche breakdown under open-base conditions
I_C	1 A - Continuous DC collector current rating at T_S ≤ 124 °C
V_CEsat	1.3 V max at I_C = 500 mA, I_B = 0.55 mA - Low saturation voltage reduces conduction loss in switching loads
h_FE	1000–2000 - High DC current gain enables direct microcontroller GPIO drive without external base amplification
R_thJS	≤ 17 K/W - Thermal resistance from junction to soldering point supports 1.5 W dissipation with adequate PCB copper area
f_T	200 MHz - Transition frequency confirms usable bandwidth for moderate-speed switching (e.g., PWM up to ~50 kHz)

Pinout & Package

Package: SOT-223 (4-pin, standard leadframe variant with emitter-collector-emitter-collector pinout). Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter, Pin 4 = Collector (dual collector configuration for enhanced current handling and thermal path).

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Base	Control input; accepts low-current drive (≤100 mA) to switch up to 1 A load
Pin 2	Collector	Main high-side current output terminal; electrically tied to Pin 4
Pin 3	Emitter	Common emitter reference; connected to system ground or low-side return path
Pin 4	Collector	Secondary collector terminal; paralleled with Pin 2 to improve current sharing and thermal spreading

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive applications including engine control, lighting, and body electronics
Pb-free (RoHS compliant)	Meets EU Directive 2011/65/EU; compatible with lead-free reflow profiles
Dual collector terminals	Reduces effective current density and improves thermal dissipation in SOT-223 footprint
Low V_CEsat (1.3 V)	Minimizes power loss in 12 V automotive loads such as solenoids and incandescent lamps
High h_FE (≥1000)	Enables direct drive from 3.3 V or 5 V logic outputs without base resistors or pre-driver stages

Applications

Automotive Relay Driver

LED Headlamp Dimming Control

Use Scenario: Driving 12 V automotive relays in body control units where microcontroller GPIOs must directly switch 500–800 mA coil currents.

IC Role / Device Role: High-gain PNP Darlington switch providing current amplification and low-loss saturation.

Use Value: Eliminates need for discrete base driver stage; reduces BOM count and PCB area while maintaining <1.5 V dropout at full load.

Use Scenario: PWM-controlled dimming of high-brightness LED headlamps in adaptive front-lighting systems (AFS).

IC Role / Device Role: Medium-power linear/PWM current switch interfacing between MCU PWM output and LED string cathode.

Use Value: Delivers stable 1 A peak current with <1.3 V conduction drop, minimizing heat generation near optical assemblies.

Industrial Solenoid Interface

Power Supply Enable Switch

Use Scenario: Controlling 24 V DC industrial solenoids in PLC I/O modules requiring robust transient immunity and thermal margin.

IC Role / Device Role: High-voltage PNP switch enabling reverse-polarity protected load activation from isolated logic signals.

Use Value: Withstands 60 V V_(BR)CEO and dissipates ≤1.5 W with minimal heatsinking-reducing system cost vs. MOSFET + gate driver solutions.

Use Scenario: Enabling auxiliary 5 V or 3.3 V rails in embedded power management subsystems using enable signals from PMICs or supervisors.

IC Role / Device Role: Low-leakage, high-gain pass element acting as programmable series switch in LDO-like configurations.

Use Value: ICES ≤ 10 µA ensures rail isolation during standby; h_FE > 1000 guarantees reliable turn-on even with weak enable sources.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCP61T1G	Same V_(BR)CEO (60 V), but lower h_FE (min 250), higher V_CEsat (1.5 V typ), SOT-223-3 package (no dual collector)	Limited to lower-current or less thermally constrained designs due to reduced gain and single-collector thermal path	Prefer when cost sensitivity outweighs thermal or gain requirements
ZTX951	Higher V_(BR)CEO (80 V), same SOT-223-4 pinout, but non-AEC-Q101 and higher V_CEsat (1.6 V)	Suitable for industrial 24 V systems but not qualified for automotive environments	Select only for non-automotive applications requiring extended voltage margin

Compared with BCP61T1G and ZTX951, BSP61E6327HTSA1 offers superior combination of AEC-Q101 compliance, dual-collector thermal design, and guaranteed h_FE ≥ 1000-making it optimal for space-constrained automotive switching where reliability and low-loss operation are critical.

Availability

BSP61E6327HTSA1 is available at Aetrix Electronics and suitable for automotive body control, industrial solenoid interface, and LED lighting applications requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for BSP61E6327HTSA1 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 and discrete devices.

The BSP60–BSP62 family was developed specifically for AEC-Q101-compliant medium-power bipolar switching in automotive body electronics, emphasizing high gain, low saturation voltage, and robust thermal behavior in compact SOT-223 packages.

FAQ

Is BSP61E6327HTSA1 pin-compatible with BSP60 or BSP62?

Yes - all three share identical SOT-223-4 package outline and pin assignment (Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter, Pin 4 = Collector). The difference lies solely in voltage ratings: BSP60 (45 V), BSP61 (60 V), BSP62 (80 V). No PCB redesign is needed when upgrading within the series.

What is the maximum allowable base current for continuous operation?

The absolute maximum base current is 100 mA per Infineon's datasheet. For reliable continuous operation at I_C = 1 A, recommended base drive is 1 mA (ensuring h_FE ≥ 1000), with peak pulses up to 100 mA permitted only for t_p ≤ 10 ms and duty cycle < 2%.

Does BSP61E6327HTSA1 require an external base resistor?

No - its high h_FE (≥1000) allows direct connection to 3.3 V or 5 V GPIOs. However, a series base resistor (e.g., 4.7 kΩ) is recommended to limit inrush current during switching and improve noise immunity in automotive EMI environments.

Can BSP61E6327HTSA1 be used in linear regulator pass applications?

It can operate in linear mode, but is optimized for switching. At I_C = 1 A, V_CEsat = 1.3–1.8 V implies ≥1.3 W dissipation - requiring significant copper area on the SOT-223 pad. For linear regulation, dedicated pass transistors with lower R_thJA or MOSFETs are preferred.

BSP61E6327HTSA1 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:: PNP - Darlington

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

Voltage - Collector Emitter Breakdown (Max):: 60 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

BSP61E6327HTSA1 FAQ

1.How can I place an order for BSP61E6327HTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BSP61E6327HTSA1 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 BSP61E6327HTSA1 reliable?

The price and inventory of BSP61E6327HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BSP61E6327HTSA1 is usually 5 days.

3.What payment methods are accepted for BSP61E6327HTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BSP61E6327HTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BSP61E6327HTSA1?

BSP61E6327HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BSP61E6327HTSA1 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 BSP61E6327HTSA1?

For technical support, including BSP61E6327HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BSP61E6327HTSA1 requirements.

6.How does Aetrix verify that BSP61E6327HTSA1 is sourced from the original manufacturer or authorized distributors?

All BSP61E6327HTSA1 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 BSP61E6327HTSA1 meets industry standards.

7.What is the process for return or replacement of BSP61E6327HTSA1?

All BSP61E6327HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BSP61E6327HTSA1, 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 BSP61E6327HTSA1 part is unused and in its original packaging.

Return procedure for BSP61E6327HTSA1:

1.Submit a request within 90 days.

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

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