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

Infineon Technologies BCX 54-16 E6327

Name: BCX 54-16 E6327
Brand: Infineon Technologies
SKU: BCX 54-16 E6327
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BCX 54-16 E6327

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: BCX 54-16 E6327.pdf

Description:: TRANS NPN 45V 1A PG-SOT89

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BCX 54-16 E6327 from Infineon Technologies is an NPN silicon bipolar junction transistor designed for audio-frequency driver and output stages, featuring a 80 V V_CEO, 1.5 A DC collector current, 0.5 V V_CE(sat) at 500 mA/50 mA, h_FE of 100–160 (Group 16), and SOT-89 package. It delivers low saturation voltage and high current capability in compact surface-mount form for linear amplification and switching in power audio circuits.

For engineers reviewing the BCX 54-16 E6327 datasheet, BCX 54-16 E6327 pinout, BCX 54-16 E6327 application, or BCX 54-16 E6327 equivalent, key selection criteria include verified V_CEO/V_CBO ratings, h_FE grouping consistency, thermal resistance (R_thJS = 20 K/W), and SOT-89 terminal assignment for PCB layout and thermal management.

Technical Context

This transistor operates as a medium-power NPN amplifier/switch with fixed-emitter bias topology, supporting continuous DC operation up to T_j = 150 °C and pulsed loads governed by duty-cycle-dependent derating curves. Its h_FE group 16 guarantees minimum DC current gain of 100 at I_C = 5 mA and 160 at I_C = 150 mA, enabling predictable biasing in Class-A/B audio output stages.

The device exhibits f_T = 100 MHz at I_C = 50 mA, V_CE = 10 V, confirming suitability for wideband AF signal handling but not RF applications. Saturation behavior is characterized at I_C = 500 mA / I_B = 50 mA, with V_CE(sat) ≤ 0.5 V and V_BE(ON) ≤ 1 V - critical for minimizing conduction loss in quasi-complementary output pairs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	80 V - maximum safe collector-emitter voltage before breakdown under open-base condition; defines headroom for audio supply rails.
I_C (DC)	1.5 A - continuous collector current rating at T_S = 130 °C; sets thermal design baseline for heatsink sizing.
V_CE(sat)	≤ 0.5 V @ I_C = 500 mA, I_B = 50 mA - low saturation voltage reduces power dissipation in switching or saturated amplifier modes.
h_FE Group	16 - guaranteed DC current gain range 100–160 at I_C = 5 mA and 160–250 at I_C = 150 mA; enables stable bias point selection.
f_T	100 MHz @ I_C = 50 mA, V_CE = 10 V - transition frequency confirms adequate bandwidth for full-audio spectrum (20 Hz–20 kHz) with margin.
R_thJS	20 K/W - junction-to-soldering-point thermal resistance; used with PCB copper area to calculate real-world junction temperature rise.

Pinout & Package

BCX 54-16 E6327 is housed in a plastic SOT-89 surface-mount package with exposed emitter pad for thermal conduction. The package measures 4.5 mm × 2.5 mm × 1.5 mm and is rated for reflow soldering per JEDEC J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Emitter terminal	Connected to ground or low-impedance return path; large metal pad provides primary thermal path to PCB copper.
2 (Collector)	Collector terminal	Carries main load current; routed to heat-spreading copper pour due to power dissipation requirements.
3 (Base)	Base control terminal	Receives drive current to modulate collector current; requires series resistor to limit I_B and prevent overdrive.

Key Features

Feature	Design Value
Low V_CE(sat)	≤ 0.5 V ensures <125 mW conduction loss at 500 mA, reducing thermal stress in output stage designs.
High h_FE group consistency	Group 16 (100–250) enables predictable DC bias without individual transistor binning in production.
Thermal robustness	R_thJS = 20 K/W and T_j(max) = 150 °C support reliable operation in enclosed audio enclosures with limited airflow.
Complementary PNP pairing	Matched performance with BCX51–BCX53 series allows symmetric push-pull output stage implementation.

Applications

Audio Power Amplifier Output Stage

DC Motor Driver Half-Bridge

Use Scenario: Final output stage in Class-AB audio amplifiers delivering up to 10 W into 8 Ω loads.

IC Role / Device Role / Timing Role: NPN switch/amplifier in quasi-complementary pair with BCX51–BCX53 PNP transistors.

Use Value: Low V_CE(sat) minimizes crossover distortion and improves efficiency; h_FE grouping ensures matched gain between complementary devices.

Use Scenario: Low-voltage (<60 V) brushed DC motor control in industrial actuators and HVAC dampers.

IC Role / Device Role / Timing Role: High-side or low-side switching element in discrete H-bridge or half-bridge configurations.

Use Value: 1.5 A I_C and 80 V V_CEO support 24 V motor systems with safety margin; SOT-89 footprint simplifies PCB layout for dual-transistor bridges.

LED Constant-Current Driver

Linear Voltage Regulator Pass Element

Use Scenario: Constant-current source for high-brightness LED strings in signage and architectural lighting.

IC Role / Device Role / Timing Role: Series pass transistor controlled by op-amp feedback loop to regulate LED current.

Use Value: Stable h_FE across temperature ensures consistent current regulation; low V_CE(sat) reduces dropout voltage and improves thermal efficiency.

Use Scenario: Pass element in adjustable linear regulators powering analog sensor front-ends or precision DACs.

IC Role / Device Role / Timing Role: Series regulator transistor dissipating excess input-output differential voltage.

Use Value: R_thJS = 20 K/W enables effective thermal coupling to PCB; 150 °C T_j(max) supports operation under sustained load conditions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN medium-power transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BCX54-16 (no suffix)	Same electrical specs and SOT-89 package; E6327 denotes tape-and-reel packaging per Infineon standard.	No functional difference; E6327 is orderable variant optimized for automated SMT placement.	Select E6327 for high-volume pick-and-place assembly; standard BCX54-16 may be used for prototyping or manual soldering.
MJD112G	Higher V_CEO (100 V), higher I_C (2 A), TO-252 package, R_thJS ≈ 30 K/W - larger thermal resistance than BCX54-16 E6327.	Preferred in higher-power (>15 W) or higher-voltage (>80 V) applications where SOT-89 thermal limits are exceeded.	Choose MJD112G only when >80 V breakdown or >1.5 A current is required; BCX54-16 E6327 offers superior thermal performance per unit area.

Compared with BCX54-16 E6327, the base variant lacks tape-and-reel optimization but matches electrically, while MJD112G trades compact size for higher voltage/current at the cost of reduced thermal efficiency - making BCX54-16 E6327 optimal for space-constrained, thermally managed AF output stages.

Availability

BCX 54-16 E6327 is available at Aetrix Electronics and suitable for audio amplifier output stages, DC motor drivers, LED constant-current sources, and linear regulator pass elements requiring stable component supply, consistent h_FE grouping, and SOT-89 thermal performance.

Supply support for BCX 54-16 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 and discrete devices.

BCX 54-16 E6327 belongs to Infineon's BCX54–BCX56 family of general-purpose NPN transistors engineered for audio-frequency driver and output applications demanding reliability, gain consistency, and thermal efficiency in compact packages.

FAQ

What is the exact pin configuration for BCX 54-16 E6327 in the SOT-89 package?

Pin 1 is the Emitter (connected to the large exposed metal pad), Pin 2 is the Collector, and Pin 3 is the Base - confirmed by Infineon's official BCX54–BCX56 datasheet revision Jul-10-2001 and package drawing VPS05162. This configuration is standardized across all BCX54 variants including E6327.

Does BCX 54-16 E6327 have a specified f_T value, and under what conditions is it measured?

Yes, f_T = 100 MHz is specified in the datasheet for BCX 54-16 E6327, measured at I_C = 50 mA, V_CE = 10 V, and f = 20 MHz (AC test condition). This value reflects small-signal high-frequency capability and remains valid across the operating temperature range of −65 °C to 150 °C.

How does the h_FE group "16" translate to actual gain values at different operating points?

Group 16 guarantees h_FE ≥ 100 at I_C = 5 mA, V_CE = 2 V and ≥ 160 at I_C = 150 mA, V_CE = 2 V. At I_C = 500 mA, h_FE drops to ≥ 25 per datasheet - critical for designing base drive networks that maintain saturation under full-load conditions.

Can BCX 54-16 E6327 be used as a direct replacement for BCX54-10 or BCX54 in existing designs?

Yes, BCX 54-16 E6327 is functionally identical to BCX54-10 and BCX54 except for guaranteed h_FE grouping (16 vs. 10) and packaging (E6327 = tape-and-reel). Electrical parameters including V_CEO, V_CE(sat), and f_T are unchanged - no circuit modification is needed when upgrading to Group 16 for improved gain consistency.

BCX 54-16 E6327 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-243AA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: NPN

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

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

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 50mA, 500mA

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 150mA, 2V

Power - Max:: 2 W

Frequency - Transition:: 100MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT89

BCX 54-16 E6327 FAQ

1.How can I place an order for BCX 54-16 E6327 through Aetrix?

Please submit a Request for Quotation (RFQ) for BCX 54-16 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 BCX 54-16 E6327 reliable?

The price and inventory of BCX 54-16 E6327 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX 54-16 E6327 is usually 5 days.

3.What payment methods are accepted for BCX 54-16 E6327?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX 54-16 E6327 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BCX 54-16 E6327?

BCX 54-16 E6327 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BCX 54-16 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 BCX 54-16 E6327?

For technical support, including BCX 54-16 E6327 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX 54-16 E6327 requirements.

6.How does Aetrix verify that BCX 54-16 E6327 is sourced from the original manufacturer or authorized distributors?

All BCX 54-16 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 BCX 54-16 E6327 meets industry standards.

7.What is the process for return or replacement of BCX 54-16 E6327?

All BCX 54-16 E6327 units undergo pre-shipment inspection (PSI). If there is an issue with BCX 54-16 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 BCX 54-16 E6327 part is unused and in its original packaging.

Return procedure for BCX 54-16 E6327:

1.Submit a request within 90 days.

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

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