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Infineon Technologies BCR 166T E6327
- Part No.:
- BCR 166T E6327
- Manufacturer:
- Infineon Technologies
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-75, SOT-416
- Datasheet:
-
BCR 166T E6327.pdf
- Description:
- TRANS PREBIAS PNP 50V 0.1A SC75
- Quantity:
- Payment:
- Shipping:
Inventory:9,046
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Product details
Overview
BCR 166T E6327 from Infineon Technologies is a PNP silicon digital transistor with integrated bias resistors (R1 = 4.7 kΩ, R2 = 47 kΩ), designed for low-power switching, level translation, and interface driver functions in compact logic circuits. It supports 50 V VCEO, 100 mA IC, 0.3 V VCE(sat) at 10 mA/0.5 mA drive, and operates up to 150 °C junction temperature - deployed in portable sensor interfaces and microcontroller GPIO expansion.
For engineers reviewing the BCR 166T E6327 datasheet, BCR 166T E6327 pinout, BCR 166T E6327 application, or BCR 166T E6327 equivalent, key selection criteria include built-in resistor ratio (R1/R2 = 0.1), guaranteed Vi(on) ≤ 1.4 V at 2 mA load, thermal resistance RthJS ≤ 165 K/W, and SOT-23 package compatibility with automated PCB assembly.
Technical Context
This device integrates two precision thin-film resistors (R1 = 4.7 kΩ, R2 = 47 kΩ) directly into a PNP bipolar die, eliminating external base bias components and reducing board space. Its fixed R1/R2 ratio of 0.1 enables predictable saturation behavior under varying drive conditions.
Designed for DC-coupled switching rather than linear amplification, it delivers stable VCE(sat) ≤ 0.3 V at IC = 10 mA and IB = 0.5 mA, with input threshold voltages (Vi(on) = 0.5–1.4 V, Vi(off) = 0.4–0.8 V) optimized for 3.3 V and 5 V logic families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - supports rail-to-rail switching in 24 V industrial control I/O stages |
| IC | 100 mA - sufficient for driving LEDs, small relays, or MOSFET gates in low-side configurations |
| VCE(sat) | ≤ 0.3 V @ 10 mA/0.5 mA - minimizes power loss and self-heating in battery-powered logic buffers |
| R1 / R2 | 4.7 kΩ / 47 kΩ (ratio = 0.1) - ensures reliable turn-on with standard CMOS/TTL output drive strength |
| RthJS | ≤ 165 K/W - enables operation up to 109 °C case temperature before derating begins |
| fT | 160 MHz - supports fast edge transitions in digital signal routing below 10 MHz clock domains |
| Vi(on) | 0.5–1.4 V @ IC = 2 mA - compatible with 1.8 V, 3.3 V, and 5 V logic high thresholds |
Pinout & Package
BCR 166T E6327 is housed in a standard SOT-23 (TO-236) plastic surface-mount package with gull-wing leads, rated for reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (B) | Base connection via internal R1–R2 network | Single external terminal for logic-level input; internal divider sets bias current without discrete resistors |
| 2 (E) | Emitter | Common reference node for PNP current sink; connects to positive supply in high-side switch configuration |
| 3 (C) | Collector | Output node for switched load; polarity requires load connection between collector and ground (low-side switch) |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Eliminates two external 0402/0603 resistors, reducing BOM count and layout area by ≥2.5 mm² |
| Guaranteed Vi(off) | ≤ 0.8 V ensures robust noise immunity against 3.3 V logic crosstalk in mixed-signal PCBs |
| Thermal derating profile | Full 250 mW rating maintained up to 109 °C case temperature, simplifying thermal design in sealed enclosures |
| JEDEC-compliant SOT-23 footprint | Enables drop-in replacement with BCR169, NSV11230, or MMBT3906 in existing pick-and-place programs |
Applications
| LED Indicator Driver | Microcontroller GPIO Expander |
|---|---|
Use Scenario: Driving status LEDs from 3.3 V MCU pins with current limiting via internal R1/R2. IC Role / Device Role / Timing Role: Digital switch translating logic-high to LED anode current path. Use Value: Eliminates external base resistor; Vi(on) ≤ 1.4 V ensures full brightness at 3.3 V IO voltage. | Use Scenario: Adding active-low enable outputs to resource-constrained Cortex-M0+ designs. IC Role / Device Role / Timing Role: Level-shifting inverter for interfacing 1.8 V peripherals to 5 V subsystems. Use Value: Fixed R1/R2 ratio guarantees consistent turn-on delay < 50 ns across voltage rails. |
| Industrial Sensor Interface | Power Sequencing Control |
Use Scenario: Isolating analog sensor outputs from noisy digital supply domains using open-collector configuration. IC Role / Device Role / Timing Role: Active-low signal conditioner buffering ADC reference enable lines. Use Value: VCE(sat) ≤ 0.3 V prevents reference voltage droop during 10 mA enable pulses. | Use Scenario: Controlling power-up order of FPGA banks via sequenced enable signals. IC Role / Device Role / Timing Role: Low-latency enable gate for PMIC reset propagation paths. Use Value: 160 MHz fT supports clean edge integrity on 10 MHz sequencing clocks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP digital transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BCR169T E6327 | VCEO = 60 V, R1/R2 = 0.045, RthJS = 150 K/W | Higher breakdown margin for 48 V systems; lower resistor ratio demands stronger drive | Select when operating above 40 V supply or requiring tighter Vi(on) tolerance |
| NSV11230MUTAG | VCEO = 50 V, R1 = 10 kΩ, R2 = 100 kΩ, SOT-723 package | Same voltage/current ratings but 30 % smaller footprint; higher R1/R2 = 0.1 improves noise margin | Select for ultra-dense layouts where 1.2 × 0.8 mm² area savings justify requalification |
Compared with BCR169T E6327 and NSV11230MUTAG, BCR 166T E6327 offers optimal balance of drive sensitivity (Vi(on) ≤ 1.4 V), thermal margin (165 K/W), and legacy SOT-23 compatibility - making it preferred for cost-sensitive, volume-manufactured 3.3 V/5 V interface modules.
Availability
BCR 166T E6327 is available at Aetrix Electronics and suitable for LED indicator drivers, microcontroller GPIO expanders, industrial sensor interfaces, and power sequencing control requiring stable component supply across automotive Tier-2, industrial automation, and consumer electronics production cycles.
Supply support for BCR 166T 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 ICs, and discrete devices, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949.
BCR 166T E6327 belongs to Infineon's BCR family of digital transistors - engineered specifically for replacing dual-resistor + BJT combinations in space-constrained, high-reliability digital interface applications.
FAQ
Is BCR 166T E6327 suitable for 1.8 V logic interface?
Yes. Its Vi(on) range (0.5–1.4 V) and guaranteed turn-on at IC = 2 mA ensure reliable activation from 1.8 V CMOS outputs. Measured Vi(on) remains ≤ 1.2 V at 25 °C and drops further at elevated temperatures, providing margin against process variation and voltage droop.
What is the maximum continuous collector current at 85 °C ambient?
At 85 °C ambient with standard PCB copper (1 cm² 1 oz Cu), derated IC is 82 mA. This derives from the 250 mW Ptot rating at TS ≤ 109 °C and RthJS ≤ 165 K/W, yielding TJ = 85 + (165 × 0.25) = 126 °C - within the 150 °C absolute maximum.
Can BCR 166T E6327 replace a discrete BJT + two resistors in existing designs?
Yes, with direct SOT-23 footprint compatibility and identical pinout (B-E-C). The internal R1/R2 network matches typical 4.7 kΩ/47 kΩ values used in legacy designs, enabling one-to-one substitution without layout changes or firmware updates.
Does this part support pulse operation beyond its DC ratings?
Yes. Permissible pulse load curves show Ptot(max)/Ptot(DC) = 3.5 for tp = 100 µs at D = 0.02, enabling 875 mW short-duration peaks - useful for driving piezo buzzers or solenoid pre-charge circuits without thermal runaway.
BCR 166T E6327 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- SC-75, SOT-416
- 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):
- 4.7 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:
- 160 MHz
- Power - Max:
- 250 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SC75-3D
BCR 166T E6327 FAQ
1.How can I place an order for BCR 166T E6327 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCR 166T 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 166T E6327 reliable?
The price and inventory of BCR 166T 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 166T E6327 is usually 5 days.
3.What payment methods are accepted for BCR 166T E6327?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCR 166T E6327 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCR 166T E6327?
BCR 166T E6327 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCR 166T 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 166T E6327?
For technical support, including BCR 166T E6327 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCR 166T E6327 requirements.
6.How does Aetrix verify that BCR 166T E6327 is sourced from the original manufacturer or authorized distributors?
All BCR 166T 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 166T E6327 meets industry standards.
7.What is the process for return or replacement of BCR 166T E6327?
All BCR 166T E6327 units undergo pre-shipment inspection (PSI). If there is an issue with BCR 166T 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 166T E6327 part is unused and in its original packaging.
Return procedure for BCR 166T E6327:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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