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Infineon Technologies BCR129FE6327
- Part No.:
- BCR129FE6327
- Manufacturer:
- Infineon Technologies
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BCR129FE6327.pdf
- Description:
- TRANS PREBIAS NPN 50V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:18,000
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Product details
Overview
BCR129FE6327 from Infineon Technologies is an NPN silicon digital transistor with integrated bias resistor (R1 = 10 kΩ), designed for switching, inverting, interfacing, and driver circuits in automotive and industrial control systems. It features VCEO = 50 V, IC = 100 mA, hFE = 120–630, VCE(sat) ≤ 0.3 V at IC = 10 mA/IB = 0.5 mA, and is AEC-Q101 qualified.
For engineers reviewing the BCR129FE6327 datasheet, BCR129FE6327 pinout, BCR129FE6327 application, or BCR129FE6327 equivalent, this part serves as a compact, RoHS-compliant, single-NPN digital transistor in SOT-23 package-optimized for space-constrained logic-level interface and load-switching tasks where built-in biasing eliminates external resistors.
Technical Context
This device integrates a monolithic NPN transistor with a precision 10 kΩ base-emitter pull-up resistor (R1), enabling direct TTL/CMOS logic-level drive without external bias components. Its internal resistor network ensures stable turn-on at Vi(on) = 0.5–1.1 V and reliable turn-off at Vi(off) = 0.4–1 V under defined test conditions.
The BCR129FE6327 operates in common-emitter configuration with fT = 150 MHz typical and Ccb = 3 pF, supporting high-speed switching up to ~10 MHz in low-power digital applications. Thermal resistance RthJS ≤ 240 K/W enables operation up to Tj = 150 °C with appropriate PCB copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; supports 24 V and 36 V automotive supply rails with margin. |
| IC | 100 mA - Continuous collector current rating; suitable for driving LEDs, small relays, or logic inputs. |
| hFE | 120–630 - DC current gain range at IC = 5 mA/VCE = 5 V; ensures robust saturation across process and temperature. |
| VCE(sat) | ≤ 0.3 V - Low saturation voltage at IC/IB = 20; minimizes power loss and self-heating in switching mode. |
| R1 | 7–13 kΩ (typ. 10 kΩ) - Integrated base bias resistor; eliminates need for external resistor in standard logic-driven switch designs. |
| fT | 150 MHz - Transition frequency; supports clean edge response in digital signal routing up to ~10 MHz. |
| Ccb | 3 pF - Collector-base capacitance at 10 V; limits Miller effect and maintains switching speed in capacitive loads. |
Pinout & Package
SOT-23 (TSFP-3) plastic surface-mount package with gull-wing leads, 1.3 mm pitch, and JEDEC MO-178 compliant outline. Standard reel packaging: 3,000 pcs/reel (ø180 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (B) | Base | Connected internally to R1; accepts logic-level input (0.5–1.1 V threshold) to enable transistor conduction. |
| 2 (E) | Emitter | Common emitter node; tied to ground or low-side return path in standard switch configuration. |
| 3 (C) | Collector | Switched output node; sinks up to 100 mA load current when driven on via Pin 1. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias resistor | R1 = 10 kΩ ±30%; eliminates external component count and layout area in logic-driven switches. |
| AEC-Q101 qualification | Qualified for automotive applications per stress test requirements; validated for temperature cycling, HTRB, and ESD. |
| Pb-free & RoHS compliant | Meets EU Directive 2011/65/EU; compatible with lead-free reflow profiles (peak 260 °C). |
| Low VCE(sat) | ≤ 0.3 V at IC = 10 mA/IB = 0.5 mA; reduces conduction loss and thermal rise in continuous duty cycles. |
Applications
| Automotive Door Module Control | Industrial PLC Input Interface |
|---|---|
Use Scenario: Driving window lift motor enable signals and mirror fold/unfold actuators in body control modules. IC Role / Device Role / Timing Role: NPN digital switch translating 3.3 V/5 V microcontroller GPIO into 12 V/24 V load control path. Use Value: Built-in R1 ensures consistent turn-on across voltage tolerances and temperature; VCEO = 50 V withstands load-dump transients. | Use Scenario: Isolating and conditioning 24 V DC field sensor inputs (e.g., proximity switches) into 3.3 V logic levels for ARM-based controllers. IC Role / Device Role / Timing Role: Level-shifting interface transistor with noise-immune threshold (Vi(off) ≤ 1 V) and fast recovery. Use Value: Low Ccb = 3 pF and fT = 150 MHz support clean pulse transmission up to 5 MHz without distortion. |
| Consumer Appliance Motor Driver | IoT Node LED Indicator Circuit |
Use Scenario: Controlling small DC fans and solenoid valves in smart washing machines and HVAC controls. IC Role / Device Role / Timing Role: Low-side load switch activated by MCU PWM or on/off signals. Use Value: VCE(sat) ≤ 0.3 V limits power dissipation to <10 mW at 30 mA, enabling use without heatsinking on FR-4. | Use Scenario: Driving status LEDs in battery-powered edge nodes where board space and BOM count are critical. IC Role / Device Role / Timing Role: Compact logic-controlled current sink with integrated biasing. Use Value: SOT-23 footprint saves >40% area vs. discrete transistor + resistor; R1 tolerance ensures predictable LED brightness across batches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN digital transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC847B,115 | Discrete NPN BJT (no built-in R1); requires external base resistor; hFE = 200–450; same SOT-23 package. | Not drop-in; adds design complexity and layout area; better for analog amplification than digital switching. | Select only if precise hFE control or linear operation is required. |
| NSV12201MT1G | AEC-Q101 NPN digital transistor with R1 = 10 kΩ; VCEO = 50 V; IC = 100 mA; but VCE(sat) = 0.25 V max (slightly lower loss). | Functionally identical pinout and biasing; optimized for lower saturation voltage in high-duty-cycle LED drivers. | Prefer for thermally constrained LED or relay coil applications needing sub-0.25 V saturation. |
Compared with BC847B,115, BCR129FE6327 reduces BOM count and layout risk; compared with NSV12201MT1G, it offers broader hFE range and established automotive qualification history-making it optimal for cost-sensitive, high-volume interface switching.
Availability
BCR129FE6327 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, and consumer appliance motor control requiring stable component supply and AEC-Q101 compliance.
Supply support for BCR129FE6327 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 power devices, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949.
The BCR129 series belongs to Infineon's automotive-qualified digital transistor product line, engineered specifically for robust, space-efficient logic-level interface and load-switching in harsh-environment control units.
FAQ
What is the maximum operating junction temperature for BCR129FE6327?
The absolute maximum junction temperature (Tj) is 150 °C, verified per AEC-Q101 stress testing. Derating begins at TS = 102 °C for the SOT-23 variant, with Ptot decreasing linearly to zero at 150 °C. PCB copper area ≥ 25 mm² per pad is recommended for full-rated operation.
Can BCR129FE6327 be used with 3.3 V logic microcontrollers?
Yes. Its Vi(on) range of 0.5–1.1 V and Vi(off) of 0.4–1 V ensure reliable turn-on with 3.3 V CMOS outputs (typically >2.4 V high), while maintaining noise margin against ground bounce or crosstalk below 0.4 V.
Is there a dual-transistor version of this part?
Yes-the BCR129S (SOT-363) contains two electrically isolated, matched NPN digital transistors with identical R1 = 10 kΩ biasing in one package, sharing thermal and layout advantages while halving footprint per channel versus discrete BCR129FE6327 units.
Does BCR129FE6327 require external decoupling or protection components?
No external bias resistor is needed due to the integrated R1. For inductive loads (e.g., relays), a flyback diode remains mandatory. No input ESD protection is integrated, so external TVS or RC filtering is advised in high-noise environments like automotive harnesses.
BCR129FE6327 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Active
- Transistor Type:
- NPN - Pre-Biased
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 10 kOhms
- Resistor - Emitter Base (R2):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 120 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 300mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- Frequency - Transition:
- 150 MHz
- Power - Max:
- 200 mW
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT23-3-3
BCR129FE6327 FAQ
1.How can I place an order for BCR129FE6327 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCR129FE6327 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 BCR129FE6327 reliable?
The price and inventory of BCR129FE6327 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BCR129FE6327 is usually 5 days.
3.What payment methods are accepted for BCR129FE6327?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCR129FE6327 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCR129FE6327?
BCR129FE6327 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCR129FE6327 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 BCR129FE6327?
For technical support, including BCR129FE6327 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCR129FE6327 requirements.
6.How does Aetrix verify that BCR129FE6327 is sourced from the original manufacturer or authorized distributors?
All BCR129FE6327 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 BCR129FE6327 meets industry standards.
7.What is the process for return or replacement of BCR129FE6327?
All BCR129FE6327 units undergo pre-shipment inspection (PSI). If there is an issue with BCR129FE6327, 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 BCR129FE6327 part is unused and in its original packaging.
Return procedure for BCR129FE6327:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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