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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Infineon Technologies BC 808-40 B6327

Name: BC 808-40 B6327
Brand: Infineon Technologies
SKU: BC 808-40 B6327
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BC 808-40 B6327

Manufacturer:: Infineon Technologies

Category:: Single Bipolar Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: BC 808-40 B6327.pdf

Description:: TRANS PNP 25V 0.5A PG-SOT23

Quantity:: RFQ Add To RFQ list

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Product details

Overview

BC808-40 B6327 from Infineon Technologies is a PNP silicon general-purpose audio-frequency transistor with V_CEO = 25 V, I_C = 500 mA, h_FE = 250–400 (at I_C = 100 mA), V_CE(sat) ≤ 0.7 V (I_C = 500 mA, I_B = 50 mA), and SOT-23 package. It serves as a medium-power switching or linear amplification device in low-voltage DC-DC bias networks, LED drivers, and relay interface circuits.

For engineers reviewing the BC808-40 B6327 datasheet, BC808-40 B6327 pinout, BC808-40 B6327 application, or BC808-40 B6327 equivalent, key selection criteria include guaranteed h_FE group 40 performance at 100 mA, low saturation voltage under high-current drive, thermal resistance R_thJS ≤ 215 K/W, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This PNP bipolar junction transistor operates in active, saturation, and cutoff regions with defined DC current gain (h_FE) across I_C = 10 mA to 500 mA and V_CE = 1 V. Its breakdown ratings-V_(BR)CEO = 25 V, V_(BR)CBO = 30 V, and V_(BR)EBO = 5 V-establish safe operating limits for low-voltage control logic interfacing.

AC characteristics include f_T = 200 MHz (I_C = 50 mA, V_CE = 5 V), C_cb = 8 pF (V_CB = 10 V), and C_eb = 60 pF (V_EB = 0.5 V), supporting stable operation up to mid-VHF frequencies in oscillator and amplifier stages where parasitic capacitance must be constrained.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	25 V - Maximum collector-emitter voltage before avalanche; sets upper rail limit for 24 V system switching
I_C	500 mA - Continuous collector current; supports driving 100–200 mA loads with 2.5× safety margin
h_FE (grp. 40)	250–400 @ I_C = 100 mA - Ensures predictable base drive requirements in linear regulators and current mirrors
V_CE(sat)	≤ 0.7 V @ I_C = 500 mA, I_B = 50 mA - Minimizes conduction loss in high-side switch applications
R_thJS	≤ 215 K/W - Enables 330 mW dissipation at T_S ≤ 79 °C; critical for PCB layout thermal management
f_T	200 MHz - Supports stable small-signal amplification up to ~30 MHz with gain margin
P_tot	330 mW @ T_S ≤ 79 °C - Defines maximum steady-state power handling on standard FR-4 with minimal copper

Pinout & Package

BC808-40 B6327 is housed in a standard SOT-23 plastic surface-mount package with gull-wing leads, optimized for automated placement and reflow soldering on high-density PCBs.

Pin/Terminal	Circuit Role	Design Meaning
1	Base (B)	Current-controlled input node; requires ≥50 mA base drive for full saturation at 500 mA collector load
2	Emitter (E)	Common reference terminal; connected to higher potential rail in high-side switch configurations
3	Collector (C)	Output current path; sinks load current to ground or lower-potential node when active

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive electronics per stress-test requirements including temperature cycling and HTRB
RoHS-compliant package	Pb-free SOT-23 construction meeting EU Directive 2011/65/EU without exemptions
High h_FE group 40	Guaranteed minimum h_FE = 250 ensures consistent gain across production lots for analog feedback loops
Low V_CE(sat)	≤ 0.7 V reduces power loss by >40% vs. legacy PNP transistors like BC808-25 in 500 mA switching
Complementary pairing	Direct counterpart to BC818-40W (NPN) for push-pull output stages and differential amplifiers

Applications

Automotive Door Module

Industrial PLC Output Stage

Use Scenario: Driving window lift motor relays and LED status indicators in body control units.

IC Role / Device Role / Timing Role: High-side PNP switch controlling 12 V loads with microcontroller GPIO-level base drive.

Use Value: V_CEO = 25 V withstands load-dump transients; h_FE ≥ 250 enables direct MCU drive without external buffer.

Use Scenario: Isolating and amplifying 24 V digital outputs to solenoid valves and indicator lamps.

IC Role / Device Role / Timing Role: Medium-current interface transistor translating 3.3 V/5 V logic to 24 V sink/source capability.

Use Value: V_CE(sat) ≤ 0.7 V limits heat rise to <1.5 °C/W at 300 mA, eliminating need for heatsinking.

Consumer Appliance Power Sequencing

Medical Patient Monitor Bias Network

Use Scenario: Enabling sequential power-up of subsystems (display, sensor, comms) in smart home hubs.

IC Role / Device Role / Timing Role: Low-leakage PNP switch enabling controlled voltage ramping via RC timing networks.

Use Value: I_CBO ≤ 0.1 µA at 25 °C ensures <1 µA standby current in always-on sequencing paths.

Use Scenario: Providing stable bias current to op-amp input stages and precision ADC references.

IC Role / Device Role / Timing Role: Linear-mode current source with h_FE stability over −40 °C to +105 °C.

Use Value: h_FE variation <±15% across temperature ensures ±0.5% current accuracy in 100 µA bias sources.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP general-purpose transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BC808-40W	SOT-323 package; R_thJS ≤ 80 K/W; P_tot = 250 mW @ T_S ≤ 130 °C	Better thermal performance in space-constrained layouts but lower absolute power rating	Select for compact designs requiring higher junction-to-solder-point efficiency
MMBT808	Same SOT-23 package; h_FE min = 200 (not group 40); V_CEO = 25 V; non-AEC-Q101	Lacks automotive qualification and guaranteed high-gain binning	Select for cost-sensitive industrial controls where AEC-Q101 is not mandated

Compared with BC808-40W, BC808-40 B6327 offers higher power dissipation (330 mW vs. 250 mW) at lower thermal resistance penalty, while MMBT808 trades guaranteed h_FE consistency and automotive qualification for lower unit cost in non-critical applications.

Availability

BC808-40 B6327 is available at Aetrix Electronics and suitable for automotive door modules, industrial PLC output stages, consumer appliance power sequencing, and medical patient monitor bias networks requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BC808-40 B6327 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.

BC808-40 B6327 belongs to Infineon's BC807/BC808 family of AEC-Q101-qualified general-purpose bipolar transistors designed specifically for automotive body electronics and industrial control interfaces demanding high reliability and parametric consistency.

FAQ

Is BC808-40 B6327 pin-compatible with BC808-25 or BC808-16?

Yes, all BC808 variants (including -16, -25, and -40) share identical SOT-23 pinout (B-E-C) and mechanical footprint. The suffix denotes only h_FE gain group-not package or pin assignment-so they are mechanically and electrically interchangeable in layout, though gain-dependent circuit performance may vary.

What is the maximum allowable base current for continuous operation?

The absolute maximum rated base current (I_B) is 100 mA, and peak base current (I_BM) is 200 mA. For reliable 500 mA collector switching, design base drive to deliver 50 mA with ≥20% margin, ensuring V_BE(sat) ≤ 1.2 V and avoiding second breakdown under sustained pulse conditions.

Does BC808-40 B6327 support operation at −55 °C?

No. The specified storage temperature range is −65 °C to +150 °C, but the operational junction temperature range is −40 °C to +150 °C per datasheet Section 2. The device is not characterized or guaranteed for electrical performance below −40 °C, and h_FE degrades significantly outside this range.

Can BC808-40 B6327 replace BC817-40 in an NPN-based circuit?

No. BC808-40 is a PNP transistor; BC817-40 is its complementary NPN counterpart. Direct substitution would invert logic polarity and likely cause circuit failure. To replace an NPN, use BC817-40 or BC818-40W; for PNP functionality, BC808-40 B6327 is appropriate only in high-side or current-sink topologies.

BC 808-40 B6327 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:: PNP

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:: 250 @ 100mA, 1V

Power - Max:: 330 mW

Frequency - Transition:: 200MHz

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT23

BC 808-40 B6327 FAQ

1.How can I place an order for BC 808-40 B6327 through Aetrix?

Please submit a Request for Quotation (RFQ) for BC 808-40 B6327 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 808-40 B6327 reliable?

The price and inventory of BC 808-40 B6327 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BC 808-40 B6327 is usually 5 days.

3.What payment methods are accepted for BC 808-40 B6327?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BC 808-40 B6327 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BC 808-40 B6327?

BC 808-40 B6327 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BC 808-40 B6327 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 808-40 B6327?

For technical support, including BC 808-40 B6327 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BC 808-40 B6327 requirements.

6.How does Aetrix verify that BC 808-40 B6327 is sourced from the original manufacturer or authorized distributors?

All BC 808-40 B6327 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 808-40 B6327 meets industry standards.

7.What is the process for return or replacement of BC 808-40 B6327?

All BC 808-40 B6327 units undergo pre-shipment inspection (PSI). If there is an issue with BC 808-40 B6327, 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 808-40 B6327 part is unused and in its original packaging.

Return procedure for BC 808-40 B6327:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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