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Infineon Technologies BC 818-25 E6327
- Part No.:
- BC 818-25 E6327
- Manufacturer:
- Infineon Technologies
- Category:
- Single Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BC 818-25 E6327.pdf
- Description:
- TRANS NPN 25V 0.5A PG-SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:9,753
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Product details
Overview
BC 818-25 E6327 from Infineon Technologies is an NPN silicon general-purpose audio-frequency transistor with VCEO = 25 V, IC = 500 mA, hFE = 160–250 (at IC = 100 mA), VCE(sat) ≤ 0.7 V (at IC = 500 mA, IB = 50 mA), and SOT-23 package - used in low-voltage switching and linear amplification stages of automotive body control modules and industrial sensor interface circuits.
For engineers reviewing the BC 818-25 E6327 datasheet, BC 818-25 E6327 pinout, BC 818-25 E6327 application, or BC 818-25 E6327 equivalent, this page delivers verified electrical specs, thermal derating curves, AEC-Q101 qualification status, and direct replacement guidance for production BOM validation and schematic review.
Technical Context
This NPN bipolar junction transistor operates in active, saturation, and cutoff regions with guaranteed DC current gain across IC = 10 mA to 500 mA at VCE = 1 V. Its fT = 170 MHz enables stable operation up to mid-VHF range in oscillator and driver stages.
Designed for automotive-grade reliability, it meets AEC-Q101 stress test requirements and features Pb-free (RoHS-compliant) SOT-23 packaging with RthJS ≤ 70 K/W, supporting continuous operation up to Tj = 150 °C under defined PCB copper area conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 25 V - Maximum collector-emitter voltage before breakdown; defines safe operating voltage headroom in 12 V automotive supply rails. |
| IC | 500 mA - Continuous collector current rating; supports driving small relays, LEDs, or logic-level MOSFET gates without external heat sinking. |
| hFE | 160–250 @ IC = 100 mA - Confirmed DC current gain group "25"; ensures predictable base drive sizing for linear amplifiers and switch-mode drivers. |
| VCE(sat) | ≤ 0.7 V @ IC = 500 mA, IB = 50 mA - Low saturation voltage minimizes power loss and self-heating in high-duty-cycle switching applications. |
| fT | 170 MHz - Transition frequency confirms usable bandwidth for AF amplification and clock buffer functions up to ~10 MHz with margin. |
| RthJS | ≤ 70 K/W - Junction-to-soldering-point thermal resistance; enables thermal design using standard 2-layer FR4 with 10 mm² copper pad. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements including HTGB, HTRB, and temperature cycling. |
Pinout & Package
BC 818-25 E6327 is housed in a surface-mount SOT-23 (TO-236AB) plastic package with gull-wing leads, rated for reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | E | Current sink node; connects to ground or low-side return path; requires low-impedance trace for stable biasing. |
| 2 (Base) | B | Control input; driven by microcontroller GPIO or resistor-limited voltage source; base resistor must limit IB ≤ 100 mA peak. |
| 3 (Collector) | C | Current source node; connects to load (e.g., relay coil, LED anode); requires adequate trace width for 500 mA continuous conduction. |
Key Features
| Feature | Design Value |
|---|---|
| High current gain group "25" | hFE = 160–250 at IC = 100 mA ensures consistent switching thresholds and reduces base drive circuit complexity. |
| Low VCE(sat) | ≤ 0.7 V at full 500 mA load lowers power dissipation to < 350 mW, avoiding thermal shutdown in compact layouts. |
| AEC-Q101 qualification | Validated for automotive under-hood environments including temperature cycling (-40 °C to +125 °C case) and humidity testing. |
| Pb-free RoHS compliance | Meets EU Directive 2011/65/EU; compatible with lead-free reflow profiles and eliminates hazardous substance reporting obligations. |
Applications
| Automotive Door Module Switching | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Driving window lift motor enable lines and mirror fold/unfold solenoids in 12 V body control units. IC Role / Device Role / Timing Role: Low-side switch controlling 300–400 mA inductive loads with fast turn-off via base discharge resistor. Use Value: VCE(sat) ≤ 0.7 V limits power loss to < 280 mW per channel, enabling dual-channel integration on same PCB area. | Use Scenario: Amplifying millivolt-level thermistor or bridge output signals before ADC sampling in PLC analog input modules. IC Role / Device Role / Timing Role: Common-emitter amplifier stage with fixed bias network and emitter degeneration resistor. Use Value: hFE group "25" provides stable gain across temperature (−40 °C to +105 °C), reducing calibration drift. |
| Consumer Appliance Power Sequencing | Medical Patient Monitor LED Drivers |
Use Scenario: Enabling 5 V standby rail sequencing in smart washing machine main control boards during power-up. IC Role / Device Role / Timing Role: High-current digital switch interfacing MCU GPIO to PMIC enable inputs with 100 ns rise/fall times. Use Value: fT = 170 MHz ensures clean edge integrity even with 100 pF capacitive loading on collector node. | Use Scenario: Driving multi-color status LEDs in battery-powered portable monitors requiring precise brightness control. IC Role / Device Role / Timing Role: Constant-current sink configured with emitter resistor and PWM base drive. Use Value: Tight hFE binning (160–250) enables ±5% LED current matching across production batches without trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN general-purpose transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BC818-40 E6327 | Higher hFE group (250–400) but identical VCEO, IC, and package. | Suitable where higher gain reduces base drive burden, but may increase sensitivity to thermal runaway in linear mode. | Select when designing fixed-bias amplifiers needing >200 hFE at low IC; verify stability with emitter degeneration. |
| MMBT2222ALT1G | Lower VCEO (40 V), higher IC (600 mA), and wider hFE spread (100–300); not AEC-Q101 qualified. | Acceptable for industrial/commercial use but not automotive due to missing qualification and wider gain variation. | Use only in non-automotive designs where cost or availability outweighs AEC-Q101 requirement and tighter hFE control. |
Compared with BC818-40 E6327 and MMBT2222ALT1G, BC818-25 E6327 offers optimal balance of gain consistency, automotive qualification, and thermal performance for 12 V switching - making it preferred for safety-critical body electronics where parametric predictability matters.
Availability
BC 818-25 E6327 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, consumer appliance power sequencing, and medical LED driver circuits requiring stable component supply and long-term lifecycle support.
Supply support for BC 818-25 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.
BC 818-25 E6327 belongs to Infineon's BC817/BC818 family of AEC-Q101-qualified general-purpose transistors designed specifically for reliable low-voltage switching and amplification in harsh automotive and industrial environments.
FAQ
What is the maximum junction temperature and how does it affect PCB layout?
The absolute maximum junction temperature is 150 °C. To maintain safe operation, the PCB must provide sufficient copper area and thermal vias to achieve RthJS ≤ 70 K/W. For continuous 500 mA operation, a minimum 10 mm² 2-oz copper pad with four 0.3 mm thermal vias is recommended per Infineon Application Note AN077.
Is BC 818-25 E6327 pin-compatible with BC817 variants?
Yes - BC 818-25 E6327 shares identical SOT-23 pinout (E-B-C) and mechanical footprint with BC817K-25 and BC817-25 variants. However, VCEO is reduced from 45 V (BC817) to 25 V (BC818), so substitution requires verification of collector voltage stress in the target circuit.
Does this transistor support pulsed operation beyond its DC ratings?
Yes - pulse operation up to ICM = 1000 mA is permitted with duty cycle ≤ 2% and pulse width < 300 µs, as confirmed by the datasheet's permissible pulse load curves. Derating is required above 115 °C case temperature per the Ptot vs. TS graph.
How does the "E6327" suffix impact packaging and ordering?
"E6327" denotes tape-and-reel packaging per EIA-481 standard, with 3000 units per reel and moisture sensitivity level (MSL) 1 - indicating unlimited floor life at ≤ 30 °C/60% RH. It is the standard orderable version for automated SMT assembly and qualifies for Infineon's extended product change notification (PCN) policy.
BC 818-25 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):
- 25 V
- Vce Saturation (Max) @ Ib, Ic:
- 700mV @ 50mA, 500mA
- Current - Collector Cutoff (Max):
- 100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 160 @ 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 818-25 E6327 FAQ
1.How can I place an order for BC 818-25 E6327 through Aetrix?
Please submit a Request for Quotation (RFQ) for BC 818-25 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 818-25 E6327 reliable?
The price and inventory of BC 818-25 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 818-25 E6327 is usually 5 days.
3.What payment methods are accepted for BC 818-25 E6327?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC 818-25 E6327 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BC 818-25 E6327?
BC 818-25 E6327 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BC 818-25 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 818-25 E6327?
For technical support, including BC 818-25 E6327 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC 818-25 E6327 requirements.
6.How does Aetrix verify that BC 818-25 E6327 is sourced from the original manufacturer or authorized distributors?
All BC 818-25 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 818-25 E6327 meets industry standards.
7.What is the process for return or replacement of BC 818-25 E6327?
All BC 818-25 E6327 units undergo pre-shipment inspection (PSI). If there is an issue with BC 818-25 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 818-25 E6327 part is unused and in its original packaging.
Return procedure for BC 818-25 E6327:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BC 818-25 E6327 Tags
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Nexperia USA Inc.
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