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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single, Pre-Biased Bipolar Transistors

Infineon Technologies BCR 185L3 E6327

Name: BCR 185L3 E6327
Brand: Infineon Technologies
SKU: BCR 185L3 E6327
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCR 185L3 E6327

Manufacturer:: Infineon Technologies

Category:: Single, Pre-Biased Bipolar Transistors

Package:: SC-101, SOT-883

Datasheet:: BCR 185L3 E6327.pdf

Description:: TRANS PREBIAS PNP 50V TSLP-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BCR 185L3 E6327 from Infineon Technologies is a PNP silicon digital transistor with integrated bias resistors (R1 = 10 kΩ, R2 = 47 kΩ), designed for low-power switching, interface, and driver circuits in compact consumer and industrial electronics. It features V_CEO = 50 V, I_C = 100 mA, V_CE(sat) ≤ 0.3 V at I_C = 10 mA/I_B = 0.5 mA, and h_FE ≥ 70 at I_C = 5 mA/V_CE = 5 V.

For engineers reviewing the BCR 185L3 E6327 datasheet, BCR 185L3 E6327 pinout, BCR 185L3 E6327 application, or BCR 185L3 E6327 equivalent, this part serves as a single-transistor logic-level switch with built-in base biasing-eliminating external resistor networks in GPIO-driven load control, LED drivers, and level-shifting interfaces where space and BOM count are constrained.

Technical Context

This device operates as a digitally enabled PNP switch: its internal R1–R2 network sets fixed base current for predictable turn-on/turn-off thresholds (V_i(on) ≤ 1.4 V, V_i(off) ≥ 0.5 V), enabling direct microcontroller I/O interfacing without external pull-up/down components. The SOT23-3 package supports surface-mount assembly and thermal dissipation up to 250 mW at T_S ≤ 135°C.

Its DC current gain (h_FE ≥ 70) and low saturation voltage ensure efficient conduction in low-voltage, low-current loads such as status indicators, relay coils, and small-signal power switches-while its f_T = 200 MHz supports fast edge transitions in digital timing paths.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - Maximum collector-emitter blocking voltage before breakdown; enables use in 24 V and lower supply rail applications.
I_C	100 mA - Continuous collector current rating; suitable for driving LEDs, small relays, and logic buffers.
V_CE(sat)	≤ 0.3 V at I_C = 10 mA/I_B = 0.5 mA - Low on-state loss reduces heat generation and improves efficiency in battery-powered systems.
h_FE	≥ 70 at I_C = 5 mA/V_CE = 5 V - Ensures reliable saturation with minimal base drive current, simplifying MCU GPIO design.
R1 / R2	10 kΩ / 47 kΩ - Fixed internal bias network provides consistent switching thresholds and eliminates discrete resistor placement.
f_T	200 MHz - Supports high-speed digital switching (e.g., PWM dimming, clock buffering) without signal degradation.
P_tot	250 mW at T_S ≤ 135°C - Thermal capability allows operation in compact PCB layouts with moderate airflow or no heatsink.

Pinout & Package

BCR 185L3 E6327 uses the SOT23-3 (TSFP-3) plastic surface-mount package with gull-wing leads and standard JEDEC outline. Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector.

Pin/Terminal	Circuit Role	Design Meaning
1 (Base)	Input control node	Connected internally to R1 (10 kΩ) and R2 (47 kΩ); accepts logic-level input to enable/disable transistor conduction.
2 (Emitter)	Current source reference	Common emitter terminal tied to positive supply rail in high-side switch configuration; defines current return path.
3 (Collector)	Switched output node	Drives load to ground when active; supports up to 100 mA sink current with <0.3 V drop.

Key Features

Feature	Design Value
Integrated bias resistors	R1 = 10 kΩ, R2 = 47 kΩ - Eliminates two external components, reducing PCB area and assembly cost in high-volume designs.
Low V_CE(sat)	≤ 0.3 V - Minimizes power loss and self-heating during sustained conduction, critical for thermally constrained enclosures.
High h_FE	≥ 70 - Enables full saturation using ≤ 0.5 mA base current, compatible with 3.3 V and 5 V microcontroller outputs.
Fast switching	f_T = 200 MHz - Supports clean edges in PWM signals up to ~20 MHz, minimizing jitter in timing-critical interfaces.
Thermal robustness	R_thJS ≤ 60 K/W - Efficient junction-to-solder-point heat transfer allows stable operation at 135°C case temperature.

Applications

LED Indicator Control

Microcontroller GPIO Interface

Use Scenario: Driving status LEDs on embedded control panels with 3.3 V or 5 V logic rails.

IC Role / Device Role / Timing Role: High-side PNP switch that sinks current from LED anode to V_CC, turning on when GPIO is low.

Use Value: Built-in R1/R2 ensures correct biasing without external resistors, reducing BOM count and layout complexity by two passive components per channel.

Use Scenario: Level-shifting between 3.3 V MCU outputs and 5 V peripheral enable lines.

IC Role / Device Role / Timing Role: Logic-level translator configured as an inverting buffer with defined V_i(on)/V_i(off) thresholds.

Use Value: Guaranteed V_i(on) ≤ 1.4 V and V_i(off) ≥ 0.5 V allow reliable detection of 3.3 V logic states while rejecting noise below 0.5 V.

Small Relay Driver

Low-Power Load Switch

Use Scenario: Activating 5 V/12 V reed relays in HVAC sensor modules and industrial I/O cards.

IC Role / Device Role / Timing Role: Current amplifier that converts MCU GPIO output into sufficient coil drive current (≤ 100 mA).

Use Value: h_FE ≥ 70 and V_CE(sat) ≤ 0.3 V ensure full relay actuation with ≤ 0.5 mA base current and minimal voltage drop across the switch.

Use Scenario: Enabling/disabling power to sensors or communication ICs in portable medical devices.

IC Role / Device Role / Timing Role: High-side load switch controlling V_CC delivery to downstream circuitry.

Use Value: 50 V V_CEO rating and 100 mA I_C support safe operation across 3.3 V to 24 V supply domains with fast turn-off recovery.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCR198L3 E6327	Higher V_CEO = 80 V; same R1/R2 values and SOT23-3 package.	Preferred for 36 V automotive or industrial bus interfaces requiring higher breakdown margin.	Select when operating above 50 V supply or needing enhanced transient immunity.
NSV11201MT1G	PNP digital transistor with R1 = 10 kΩ, R2 = 10 kΩ; V_CEO = 50 V, I_C = 100 mA, but lower h_FE (min 35).	Less gain margin may require higher base drive current; suited for non-critical switching where cost is primary.	Choose only if R1/R2 ratio tolerance (0.21 vs 0.21) and h_FE ≥ 70 are not required.

Compared with BCR 185L3 E6327, BCR198L3 offers higher voltage headroom without sacrificing footprint or bias network, while NSV11201MT1G trades gain consistency for lower unit cost-making the original optimal for precision GPIO-driven switching where saturation reliability is essential.

Availability

BCR 185L3 E6327 is available at Aetrix Electronics and suitable for LED indicator control, microcontroller GPIO interfacing, and small relay driving requiring stable component supply across production lifecycles.

Supply support for BCR 185L3 E6327 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, with global manufacturing and quality certification to ISO/TS 16949 and ISO 9001.

The BCR185 series belongs to Infineon's digital transistor product line, engineered specifically for space-constrained, high-reliability switching applications where integration of bias resistors reduces design risk and accelerates time-to-market.

FAQ

What is the maximum continuous collector current for BCR 185L3 E6327?

The maximum continuous collector current is 100 mA under specified thermal conditions (T_S ≤ 135°C). Derating applies above this case temperature, with total power dissipation dropping linearly to zero at 150°C junction temperature. This rating assumes proper PCB copper pour and ambient airflow typical of industrial control boards.

Can BCR 185L3 E6327 be used as a high-side switch?

Yes-it is a PNP digital transistor optimized for high-side switching: emitter connects to V_CC, collector drives the load to ground, and base receives logic-low input to activate conduction. Its integrated R1/R2 network ensures correct bias polarity and eliminates external pull-up resistors required in discrete PNP configurations.

What is the function of the internal resistors R1 and R2?

R1 (10 kΩ) connects base to input signal, and R2 (47 kΩ) pulls base to emitter-forming a voltage divider that sets precise turn-on (V_i(on) ≤ 1.4 V) and turn-off (V_i(off) ≥ 0.5 V) thresholds. This configuration guarantees reliable switching with standard CMOS/TTL logic levels and rejects noise below 0.5 V.

Is BCR 185L3 E6327 RoHS compliant and halogen-free?

Yes-BCR 185L3 E6327 complies with EU RoHS Directive 2011/65/EU and is manufactured as a halogen-free device per IEC 61249-2-21. Full material declarations and compliance certificates are available through Infineon's official product documentation portal and Aetrix Electronics' technical support team.

BCR 185L3 E6327 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: SC-101, SOT-883

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Transistor Type:: PNP - Pre-Biased

Current - Collector (Ic) (Max):: 100 mA

Voltage - Collector Emitter Breakdown (Max):: 50 V

Resistor - Base (R1):: 10 kOhms

Resistor - Emitter Base (R2):: 47 kOhms

DC Current Gain (hFE) (Min) @ Ic, Vce:: 70 @ 5mA, 5V

Vce Saturation (Max) @ Ib, Ic:: 300mV @ 500µA, 10mA

Current - Collector Cutoff (Max):: 100nA (ICBO)

Frequency - Transition:: 200 MHz

Power - Max:: 250 mW

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-TSLP-3-4

BCR 185L3 E6327 FAQ

1.How can I place an order for BCR 185L3 E6327 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCR 185L3 E6327 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 BCR 185L3 E6327 reliable?

The price and inventory of BCR 185L3 E6327 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCR 185L3 E6327 is usually 5 days.

3.What payment methods are accepted for BCR 185L3 E6327?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCR 185L3 E6327 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCR 185L3 E6327?

BCR 185L3 E6327 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCR 185L3 E6327 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 BCR 185L3 E6327?

For technical support, including BCR 185L3 E6327 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCR 185L3 E6327 requirements.

6.How does Aetrix verify that BCR 185L3 E6327 is sourced from the original manufacturer or authorized distributors?

All BCR 185L3 E6327 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 BCR 185L3 E6327 meets industry standards.

7.What is the process for return or replacement of BCR 185L3 E6327?

All BCR 185L3 E6327 units undergo pre-shipment inspection (PSI). If there is an issue with BCR 185L3 E6327, 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 BCR 185L3 E6327 part is unused and in its original packaging.

Return procedure for BCR 185L3 E6327:

1.Submit a request within 90 days.

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

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