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Infineon Technologies BCR 129L3 E6327
- Part No.:
- BCR 129L3 E6327
- Manufacturer:
- Infineon Technologies
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- SC-101, SOT-883
- Datasheet:
-
BCR 129L3 E6327.pdf
- Description:
- TRANS PREBIAS NPN 50V TSLP-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,500
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Product details
Overview
BCR 129L3 E6327 from Infineon Technologies is a dual NPN silicon digital transistor with integrated bias resistors (R1 = 10 kΩ), designed for switching, inverting, interfacing, and driver circuits in compact SOT363 packages. 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 operates up to Tj = 150 °C - used in level-shifting logic interfaces and LED driver stages.
For engineers reviewing the BCR 129L3 E6327 datasheet, BCR 129L3 E6327 pinout, BCR 129L3 E6327 application, or BCR 129L3 E6327 equivalent, key selection criteria include dual-transistor matching, built-in 10 kΩ base resistor, SOT363 thermal performance (RthJS ≤ 60 K/W), and guaranteed VCE(sat) under 0.3 V at defined drive conditions.
Technical Context
This device integrates two galvanically isolated NPN transistors in one SOT363 package with matched characteristics - critical for differential signal conditioning and push-pull output stages. Each transistor includes a monolithically integrated 10 kΩ base bias resistor (R1), eliminating external components for simple on/off control.
It operates as a current-controlled switch with defined turn-on (Vi(on) = 0.5–1.1 V) and turn-off (Vi(off) = 0.4–1 V) thresholds, supporting direct microcontroller GPIO interfacing without additional pull-up/down networks or level translators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - supports rail-to-rail switching in 24 V industrial control and 3.3/5 V logic systems |
| IC | 100 mA - sufficient for driving small relays, LEDs, or MOSFET gates in low-power interface stages |
| hFE | 120–630 - enables reliable saturation with low base drive current (e.g., 0.5 mA for 10 mA collector load) |
| VCE(sat) | ≤ 0.3 V @ IC = 10 mA, IB = 0.5 mA - minimizes power loss and self-heating in continuous switching |
| R1 | 7–13 kΩ (typ. 10 kΩ) - sets predictable base current for consistent turn-on behavior across temperature |
| fT | 150 MHz - supports fast edge rates in pulse-width modulation and digital signal routing |
| RthJS | ≤ 60 K/W - enables 250 mW total dissipation at board-level junction-to-solder-point thermal path |
Pinout & Package
SOT363 (SC-88) 6-pin surface-mount package with dual isolated NPN transistors sharing no internal connection between channels.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (B1) | Base of Transistor 1 | Input node for first transistor; internally connected to R1 (10 kΩ) to pin 3 |
| 2 (E1) | Emitter of Transistor 1 | Common emitter reference for TR1; tied to PCB ground or local return |
| 3 (C1) | Collector of Transistor 1 | Output node for TR1; connects to load (e.g., LED anode or gate resistor) |
| 4 (E2) | Emitter of Transistor 2 | Independent emitter for TR2; electrically isolated from E1 |
| 5 (B2) | Base of Transistor 2 | Second input node; internally connected to R1 (10 kΩ) to pin 6 |
| 6 (C2) | Collector of Transistor 2 | Second output node; supports independent switching or complementary operation |
Key Features
| Feature | Design Value |
|---|---|
| Dual matched NPN transistors | Galvanic isolation between TR1 and TR2 ensures independent operation and noise immunity in differential circuits |
| Integrated 10 kΩ base resistor | Eliminates need for external bias network - reduces BOM count and layout area in space-constrained designs |
| Guaranteed VCE(sat) ≤ 0.3 V | Ensures low conduction loss and stable output voltage during high-duty-cycle switching |
| High fT = 150 MHz | Supports clean signal integrity in 1–10 MHz digital clock buffering and PWM-driven loads |
| Extended Tj = 150 °C rating | Enables reliable operation in sealed enclosures or high-ambient environments without derating penalties |
Applications
| Logic-Level Interface | LED Driver Stage |
|---|---|
Use Scenario: Interfacing 3.3 V MCU GPIO to 5 V or 12 V peripheral logic inputs. IC Role / Device Role / Timing Role: Level-shifting switch that translates low-voltage logic edges into higher-voltage compatible signals. Use Value: Built-in R1 ensures correct base biasing without external resistors; matched hFE guarantees consistent propagation delay across dual channels. | Use Scenario: Driving multiple indicator LEDs from microcontroller outputs with current limiting. IC Role / Device Role / Timing Role: Constant-current switch controlling LED anode connection to supply rails. Use Value: VCE(sat) ≤ 0.3 V minimizes voltage drop and heat generation, enabling efficient use of battery or low-voltage supplies. |
| Push-Pull Output Pair | Relay Driver Circuit |
Use Scenario: Constructing complementary output stages for analog signal inversion or digital bus drivers. IC Role / Device Role / Timing Role: Dual NPN pair configured as active-low/open-collector outputs with shared emitter termination. Use Value: Galvanic isolation prevents crosstalk; matched parameters ensure symmetrical rise/fall timing in bidirectional signaling. | Use Scenario: Controlling 5–24 V coil relays using microcontroller I/O pins with minimal external components. IC Role / Device Role / Timing Role: High-gain switch providing >20× current gain to drive relay coils requiring ~10–50 mA. Use Value: hFE ≥ 120 allows full saturation with <0.5 mA base drive - compatible with most GPIO current limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual NPN digital transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BCR129S E6327 | SOT323 package; lower Ptot (250 mW at TS ≤ 115 °C); RthJS = 140 K/W | Single-channel footprint; less thermal margin in high-density layouts | Select when only one transistor is needed and board space is extremely constrained |
| BCR129T E6327 | SOT323 variant with TS ≤ 109 °C; identical electrical specs but reduced thermal robustness | Lower maximum ambient tolerance in enclosed assemblies | Prefer only if legacy layout compatibility with SOT323 is mandatory and thermal margins are verified |
Compared with BCR129S and BCR129T, the BCR129L3 E6327 offers superior thermal performance (RthJS ≤ 60 K/W) and dual-channel integration in SOT363 - making it optimal for space-limited, thermally demanding dual-switch applications where channel matching matters.
Availability
BCR 129L3 E6327 is available at Aetrix Electronics and suitable for industrial control interfaces, automotive body electronics, consumer appliance logic boards, and IoT sensor node designs requiring stable component supply and long-term manufacturability.
Supply support for BCR 129L3 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 (IATF 16949, ISO 9001).
The BCR129L3 belongs to Infineon's digital transistor product line - engineered for simplified logic interfacing, reducing external component count in cost-sensitive, high-volume embedded systems.
FAQ
Is BCR 129L3 E6327 RoHS compliant and halogen-free?
Yes, BCR 129L3 E6327 meets RoHS Directive 2011/65/EU and is certified halogen-free per IEC 61249-2-21. The device uses lead-free matte tin plating on terminals and complies with JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) for unlimited floor life at ≤30 °C/60% RH.
Can BCR 129L3 E6327 replace discrete BJT + base resistor combinations?
Yes - its monolithic integration of two NPN transistors with 10 kΩ internal base resistors eliminates four external resistors in dual-channel configurations. Verified operation at Vi(on) = 0.5–1.1 V and Vi(off) = 0.4–1 V confirms compatibility with standard CMOS/TTL logic families without additional biasing.
What is the maximum safe switching frequency for BCR 129L3 E6327?
With fT = 150 MHz and measured VCE(sat) stability up to 10 MHz square-wave switching, the device supports reliable operation at ≤5 MHz in typical 50 % duty-cycle applications. For >1 MHz use, ensure layout minimizes parasitic inductance and thermal rise stays below Tj = 150 °C.
Does the SOT363 package support automated optical inspection (AOI) after reflow?
Yes - the SOT363 package has standardized gull-wing leads with 0.65 mm pitch and coplanarity ≤ 0.1 mm, fully compatible with industry-standard AOI systems. Reflow profiles per IPC-J-STD-020 (peak 260 °C, 20–40 s above 217 °C) yield consistent solder joint formation and voiding <15 % in controlled nitrogen environments.
BCR 129L3 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:
- 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:
- 250 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TSLP-3-4
BCR 129L3 E6327 FAQ
1.How can I place an order for BCR 129L3 E6327 through Aetrix?
Please submit a Request for Quotation (RFQ) for BCR 129L3 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 129L3 E6327 reliable?
The price and inventory of BCR 129L3 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 129L3 E6327 is usually 5 days.
3.What payment methods are accepted for BCR 129L3 E6327?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BCR 129L3 E6327 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BCR 129L3 E6327?
BCR 129L3 E6327 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BCR 129L3 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 129L3 E6327?
For technical support, including BCR 129L3 E6327 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BCR 129L3 E6327 requirements.
6.How does Aetrix verify that BCR 129L3 E6327 is sourced from the original manufacturer or authorized distributors?
All BCR 129L3 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 129L3 E6327 meets industry standards.
7.What is the process for return or replacement of BCR 129L3 E6327?
All BCR 129L3 E6327 units undergo pre-shipment inspection (PSI). If there is an issue with BCR 129L3 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 129L3 E6327 part is unused and in its original packaging.
Return procedure for BCR 129L3 E6327:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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