My Inquiry
My Account
Infineon Technologies BCX55-10E6327
- Part No.:
- BCX55-10E6327
- Manufacturer:
- Infineon Technologies
- Category:
- Single Bipolar Transistors
- Package:
- -
- Datasheet:
-
BCX55-10E6327.pdf
- Description:
- SMALL SIGNAL BIPOLAR TRANSISTOR
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BCX55-10E6327 from Infineon Technologies is an NPN silicon bipolar junction transistor designed for audio-frequency driver and output stages, featuring VCEO = 60 V, IC = 1.5 A continuous, VCE(sat) ≤ 0.5 V at IC = 500 mA / IB = 50 mA, hFE = 100–160 (Group 10), and SOT-89 package. It serves in low-voltage power amplification and switching applications requiring high current gain and low saturation voltage.
For engineers reviewing the BCX55-10E6327 datasheet, BCX55-10E6327 pinout, BCX55-10E6327 application, or BCX55-10E6327 equivalent, this page delivers verified electrical specs, thermal resistance (RthJS = 20 K/W), DC current gain groups, transition frequency (fT = 100 MHz), and complementary PNP pairing with BCX51–BCX53 series.
Technical Context
This transistor operates as a medium-power NPN amplifier/switch with fixed-gain grouping (hFE = 100–160 at IC = 5 mA, VCE = 2 V) and specified performance up to 150 °C junction temperature. Its SOT-89 thermally enhanced plastic package supports 1 W total power dissipation at TS = 130 °C.
Designed for linear AF stages and switching loads, it exhibits low VCE(sat) (≤0.5 V) under high-current drive and maintains fT ≥ 100 MHz at IC = 50 mA / VCE = 10 V - enabling stable gain in mid-band audio and fast-switching control circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 60 V - Maximum safe collector-emitter voltage before breakdown in common-emitter configuration. |
| IC (DC) | 1.5 A - Continuous collector current rating defining usable load-driving capacity. |
| VCE(sat) | ≤0.5 V @ IC = 500 mA, IB = 50 mA - Low saturation voltage minimizes power loss in switching mode. |
| hFE Group | 100–160 (Group 10) - Tight DC current gain binning ensures predictable biasing in production designs. |
| fT | 100 MHz - Transition frequency confirms usable gain-bandwidth for audio and low-speed digital switching. |
| RthJS | 20 K/W - Thermal resistance from junction to soldering point enables accurate thermal design in PCB layouts. |
| Ptot | 1 W @ TS = 130 °C - Power handling capability under defined heatsink conditions. |
Pinout & Package
SOT-89 package: surface-mount, 3-pin thermally optimized plastic case with exposed emitter pad for improved heat transfer. Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter (confirmed per Infineon package outline E6327).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Base | Current-controlled input terminal; requires ~50 mA base drive for full 500 mA collector conduction. |
| Pin 2 | Collector | Main current output path; electrically connected to metal tab for thermal conduction in SOT-89. |
| Pin 3 | Emitter | Common reference terminal; internally tied to exposed pad for low-inductance grounding and thermal sinking. |
Key Features
| Feature | Design Value |
|---|---|
| High DC current gain group | hFE = 100–160 ensures stable bias point across temperature and unit variation in amplifier stages. |
| Low VCE(sat) | ≤0.5 V reduces conduction losses by >40% vs. standard general-purpose transistors at 500 mA. |
| Thermally robust SOT-89 | RthJS = 20 K/W allows direct mounting on copper pour without external heatsink for ≤1 W operation. |
| Complementary PNP pairing | Validated match with BCX51–BCX53 series enables push-pull output stage implementation. |
| 150 °C max junction temp | Enables reliable operation in enclosed industrial enclosures or automotive under-hood ambient conditions. |
Applications
| Audio Power Amplifier Output Stage | DC Motor Driver (Small Actuators) |
|---|---|
Use Scenario: Final push-pull stage in Class AB audio amplifiers delivering 1–2 W into 8 Ω loads. IC Role / Device Role / Timing Role: NPN half of complementary pair driving speaker load; biased in linear region for low-distortion amplification. Use Value: VCE(sat) ≤ 0.5 V and hFE ≥ 100 ensure minimal crossover distortion and consistent gain across units. | Use Scenario: H-bridge low-side switch controlling brushed DC motors in robotics or HVAC dampers (≤24 V, ≤1 A). IC Role / Device Role / Timing Role: Medium-current switching element turning motor winding on/off via PWM at ≤20 kHz. Use Value: fT = 100 MHz and fast turn-on/turn-off support clean PWM edges without shoot-through risk. |
| Linear Voltage Regulator Pass Element | LED Constant-Current Driver |
Use Scenario: Series pass transistor in adjustable 3–24 V linear regulators powering analog sensors or microcontrollers. IC Role / Device Role / Timing Role: Current-controlled variable resistor dissipating excess input-output differential voltage. Use Value: 1.5 A IC rating and 60 V VCEO allow regulation from wide-input supplies with margin. | Use Scenario: Constant-current sink for high-brightness LED strings in signage or indicator panels (≤500 mA). IC Role / Device Role / Timing Role: Emitter-follower configured current regulator with feedback resistor setting LED current. Use Value: Tight hFE grouping (100–160) ensures ±5% current accuracy across production batches. |
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 |
|---|---|---|---|
| BCX55-16E6327 | hFE = 160–250 (Group 16); otherwise identical ratings and package. | Higher gain enables lower base drive current; may require re-biasing in existing circuits. | Select when designing new amplifier stages needing higher open-loop gain or reduced base current consumption. |
| MMBT5551 (SOT-23) | Lower IC (600 mA), smaller SOT-23 package, VCEO = 160 V, RthJS ≈ 250 K/W. | Not thermally suitable for >200 mW continuous dissipation; limited to signal-level or low-duty-cycle use. | Choose only for low-power signal switching where footprint reduction outweighs thermal and current limitations. |
Compared with BCX55-10E6327, BCX55-16E6327 offers higher gain but same thermal/power envelope, while MMBT5551 trades current capacity and thermal performance for miniaturization - making the original optimal for robust 1 W AF output or motor drive roles.
Availability
BCX55-10E6327 is available at Aetrix Electronics and suitable for audio amplifier output stages, small DC motor drivers, linear voltage regulator pass elements, and LED constant-current drivers requiring stable component supply and repeatable hFE performance.
Supply support for BCX55-10E6327 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 ICs, and discrete power devices, with global manufacturing and quality certification to ISO/TS 16949.
BCX55-10E6327 belongs to Infineon's BCX54–BCX56 family of silicon NPN transistors engineered for high-reliability audio-frequency driver and output applications demanding tight gain grouping and low saturation voltage.
FAQ
What is the maximum operating junction temperature for BCX55-10E6327?
The absolute maximum junction temperature (Tj) is 150 °C, as specified in the Infineon datasheet. Operation beyond this limit risks permanent degradation of hFE, increased leakage, or bond-wire failure. Derating is required above 130 °C case temperature to maintain reliability.
Is BCX55-10E6327 pin-compatible with BCX54 or BCX56 variants?
Yes - all BCX54–BCX56 variants share identical SOT-89 pinout (Base–Collector–Emitter) and mechanical footprint. Only electrical parameters differ: VCEO (45/60/80 V), VCBO (45/60/100 V), and hFE groupings. Substitution requires verification of voltage and gain requirements.
Does BCX55-10E6327 have a built-in protection diode or ESD structure?
No - BCX55-10E6327 is a bare silicon NPN transistor without integrated protection diodes, ESD clamps, or thermal shutdown. External flyback diodes are required for inductive loads, and PCB-level ESD protection should be implemented per IEC 61000-4-2 Level 2.
Can BCX55-10E6327 be used in switching power supplies?
It is not recommended for primary-side switching in SMPS due to limited fT margin and lack of avalanche rating. However, it functions reliably in auxiliary bias windings, gate drivers, or low-frequency (<50 kHz) synchronous rectifier control where its 1.5 A IC and low VCE(sat) provide efficiency benefits.
BCX55-10E6327 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Transistor Type:
- -
- Current - Collector (Ic) (Max):
- -
- Voltage - Collector Emitter Breakdown (Max):
- -
- Vce Saturation (Max) @ Ib, Ic:
- -
- Current - Collector Cutoff (Max):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- -
- Power - Max:
- -
- Frequency - Transition:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
BCX55-10E6327 FAQ
1.How can I place an order for BCX55-10E6327 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCX55-10E6327 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 BCX55-10E6327 reliable?
The price and inventory of BCX55-10E6327 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCX55-10E6327 is usually 5 days.
3.What payment methods are accepted for BCX55-10E6327?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCX55-10E6327 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCX55-10E6327?
BCX55-10E6327 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCX55-10E6327 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 BCX55-10E6327?
For technical support, including BCX55-10E6327 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCX55-10E6327 requirements.
6.How does Aetrix verify that BCX55-10E6327 is sourced from the original manufacturer or authorized distributors?
All BCX55-10E6327 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 BCX55-10E6327 meets industry standards.
7.What is the process for return or replacement of BCX55-10E6327?
All BCX55-10E6327 units undergo pre-shipment inspection (PSI). If there is an issue with BCX55-10E6327, 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 BCX55-10E6327 part is unused and in its original packaging.
Return procedure for BCX55-10E6327:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BCX55-10E6327 Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
