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Infineon Technologies BC 817-40 E6327
- Part No.:
- BC 817-40 E6327
- Manufacturer:
- Infineon Technologies
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BC 817-40 E6327.pdf
- Description:
- TRANS NPN 45V 0.5A PG-SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:3,001
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Product details
Overview
BC817-40 E6327 from Infineon Technologies is an NPN silicon general-purpose audio-frequency transistor with hFE = 250–630 (IC = 100 mA, VCE = 1 V), VCEO = 45 V, IC = 500 mA continuous, and VCE(sat) ≤ 0.7 V at IC = 500 mA/IB = 50 mA. It is used in low-voltage switching and linear amplification stages of automotive body control modules, industrial sensor signal conditioning, and consumer power supply feedback circuits.
For engineers reviewing the BC817-40 E6327 datasheet, BC817-40 E6327 pinout, BC817-40 E6327 application, or BC817-40 E6327 equivalent, key selection criteria include guaranteed hFE group 40 performance across temperature, AEC-Q101 qualification for automotive use, SOT-23 package thermal resistance (RthJS ≤ 70 K/W), and low VCE(sat) enabling efficient 5–12 V DC-DC bias networks.
Technical Context
This transistor operates as a medium-power, high-gain NPN switch or amplifier in linear and saturated modes. Its design supports stable DC biasing with hFE maintained ≥250 up to 105°C and collector-emitter saturation voltage tightly specified at ≤0.7 V under 500 mA load.
The device features low capacitance (Ccb = 3 pF, Ceb = 40 pF) and fT = 170 MHz, enabling reliable operation in audio-band switching (≤20 kHz) and low-frequency pulse-width modulation drive circuits without unintended oscillation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 45 V - Supports rail voltages up to 36 V with safety margin in automotive 12 V systems |
| hFE (IC = 100 mA) | 250–630 - Ensures robust base drive margin for relay drivers and logic-level translators |
| VCE(sat) | ≤ 0.7 V @ IC = 500 mA - Minimizes conduction loss in 500 mA switching loads |
| Ptot | 500 mW @ TS ≤ 115 °C - Enables compact SOT-23 mounting without forced cooling |
| fT | 170 MHz - Sufficient for fast-switching applications like PWM dimming and encoder interface buffering |
| RthJS | ≤ 70 K/W - Allows direct PCB copper pour heatsinking for sustained 300 mA operation |
Pinout & Package
BC817-40 E6327 is housed in a RoHS-compliant SOT-23 plastic surface-mount package with gull-wing leads and standard JEDEC MO-215 outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink terminal | Connected to ground or low-side return path; defines reference for VBE bias |
| 2 (Base) | Control input | Receives current-limited drive (max 100 mA) to saturate or cut off collector current |
| 3 (Collector) | Current source terminal | Switches load between supply rail and emitter; handles up to 500 mA continuous |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, and HTRB |
| hFE group 40 | Guaranteed minimum hFE = 250 at 100 mA ensures predictable gain in production-batched designs |
| VCE(sat) ≤ 0.7 V | Reduces power dissipation by >30% vs. legacy transistors in 500 mA switching nodes |
| SOT-23 footprint | Enables high-density layout compatibility with automated pick-and-place and reflow soldering |
Applications
| Automotive Door Module Switching | Industrial Sensor Signal Amplification |
|---|---|
Use Scenario: Driving 12 V window lift motor relays and LED status indicators in door control units. IC Role / Device Role / Timing Role: NPN switch controlling load current via microcontroller GPIO with current-limiting base resistor. Use Value: Low VCE(sat) limits self-heating during repeated actuation; AEC-Q101 rating ensures field reliability over 15-year vehicle life. | Use Scenario: Amplifying millivolt-level output from RTD or thermistor bridges in PLC analog input cards. IC Role / Device Role / Timing Role: Linear-mode common-emitter amplifier with fixed bias network for 0–10 V scaling. Use Value: Tight hFE spread (250–630) enables consistent gain calibration across production batches without per-unit trimming. |
| Consumer Power Supply Feedback | IoT Node Load Switching |
Use Scenario: Isolating optocoupler feedback signal from primary-side controller in 5–24 V AC/DC adapters. IC Role / Device Role / Timing Role: DC-coupled level shifter translating 3.3 V controller logic to 12 V opto-LED drive. Use Value: High fT (170 MHz) prevents phase lag in regulation loop; low Ceb avoids noise coupling into sensitive feedback path. | Use Scenario: Enabling/disabling peripheral sensors (e.g., humidity, motion) in battery-powered edge devices. IC Role / Device Role / Timing Role: Low-quiescent-current high-side or low-side load switch controlled by MCU I/O. Use Value: ICBO ≤ 0.1 µA at 150°C ensures <1 µA leakage when off-critical for multi-year coin-cell operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN switching transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC847C,215 (Nexperia) | Lower VCEO (45 V same), but hFE = 420–800 (group C); RthJS = 250 K/W (SOT-23) | Higher gain variability; less suitable for precision current mirror or fixed-gain amplifiers | Prefer for high-gain digital switching where VCE(sat) tolerance is secondary |
| MMBT3904LT1G (ON Semiconductor) | VCEO = 40 V; hFE = 100–300; VCE(sat) ≤ 0.2 V @ 10 mA (but ≤ 0.3 V only at 50 mA) | Lower saturation voltage at light loads, but degrades faster above 200 mA | Prefer for low-current (<100 mA) logic interfacing; avoid for 500 mA sustained loads |
Compared with BC847C and MMBT3904LT1G, BC817-40 E6327 delivers superior thermal capability (RthJS ≤ 70 K/W), tighter hFE consistency at high current, and proven AEC-Q101 compliance-making it optimal for automotive and industrial 500 mA switching nodes where reliability and thermal headroom are critical.
Availability
BC817-40 E6327 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and consumer power supply feedback circuits requiring stable component supply and long-term lifecycle support.
Supply support for BC817-40 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, with global manufacturing and quality certification to ISO/TS 16949 and IATF 16949.
BC817-40 E6327 belongs to Infineon's BC817K family of AEC-Q101-qualified general-purpose transistors designed specifically for automotive and industrial switching and amplification where robustness, thermal stability, and parametric consistency are required.
FAQ
Is BC817-40 E6327 pin-compatible with BC847 series transistors?
No. While both use SOT-23 packages, BC817-40 E6327 has emitter-base-collector (E-B-C) pinout (pin 1 = E, pin 2 = B, pin 3 = C), whereas BC847 variants use emitter-collector-base (E-C-B) ordering. Swapping them causes immediate circuit failure due to reversed polarity.
What is the maximum allowable base current for continuous operation?
The absolute maximum DC base current is 100 mA per datasheet. For reliable 500 mA collector switching, design base drive to deliver 50 mA (hFE min = 250), limiting continuous IB to ≤50 mA to ensure junction temperature stays within 150°C under worst-case ambient and PCB thermal conditions.
Does BC817-40 E6327 support pulsed operation beyond 500 mA?
Yes. Peak collector current ICM is rated at 1000 mA for pulse widths <300 µs with duty cycle <2%. This allows short-duration surge handling-for example, in solenoid pre-charge or inrush limiting-provided average power remains within Ptot = 500 mW limits.
How does its AEC-Q101 qualification differ from standard industrial grade?
AEC-Q101 requires extended stress testing including 1000-hour high-temperature operating life (HTOL) at 150°C, 1000-cycle temperature cycling (-40°C to +150°C), and unbiased high-humidity storage. These tests validate reliability for automotive under-hood environments where standard industrial parts may fail prematurely.
BC 817-40 E6327 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 500 mA
- Voltage - Collector Emitter Breakdown (Max):
- 45 V
- Vce Saturation (Max) @ Ib, Ic:
- 700mV @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 250 @ 100mA, 1V
- Power - Max:
- 330 mW
- Frequency - Transition:
- 170MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT23
BC 817-40 E6327 FAQ
1.How can I place an order for BC 817-40 E6327 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC 817-40 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 BC 817-40 E6327 reliable?
The price and inventory of BC 817-40 E6327 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC 817-40 E6327 is usually 5 days.
3.What payment methods are accepted for BC 817-40 E6327?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC 817-40 E6327 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC 817-40 E6327?
BC 817-40 E6327 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC 817-40 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 BC 817-40 E6327?
For technical support, including BC 817-40 E6327 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC 817-40 E6327 requirements.
6.How does Aetrix verify that BC 817-40 E6327 is sourced from the original manufacturer or authorized distributors?
All BC 817-40 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 BC 817-40 E6327 meets industry standards.
7.What is the process for return or replacement of BC 817-40 E6327?
All BC 817-40 E6327 units undergo pre-shipment inspection (PSI). If there is an issue with BC 817-40 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 BC 817-40 E6327 part is unused and in its original packaging.
Return procedure for BC 817-40 E6327:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC 817-40 E6327 Tags
-
MMBT3906LT1G
onsemi
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MMBT3904-7-F
Diodes Incorporated
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MMBT3904LT1G
onsemi
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MMBT3906-7-F
Diodes Incorporated
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MMBT3904-TP
Micro Commercial Co
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MMBT2222A-7-F
Diodes Incorporated
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BC846BLT1G
onsemi
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BC847B,215
Nexperia USA Inc.
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SMMBT3904LT1G
onsemi
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MMBT2222A-TP
Micro Commercial Co
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MMBTA06LT1G
onsemi
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MMBT2222ALT1G
onsemi
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