Infineon Technologies BC 808-40 E6327

Overview

BC808-40 E6327 from Infineon Technologies is a PNP silicon general-purpose audio-frequency transistor with V_CEO = 25 V, I_C = 500 mA, h_FE = 250–630 (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 E6327 datasheet, BC808-40 E6327 pinout, BC808-40 E6327 application, or BC808-40 E6327 equivalent, key selection criteria include guaranteed h_FE group 40 performance across temperature, AEC-Q101 qualification for automotive-grade reliability, low V_CE(sat) at high current, RoHS-compliant lead-free packaging, and thermal resistance R_thJS ≤ 215 K/W in standard SOT-23 mounting.

Technical Context

This PNP bipolar junction transistor operates in active, saturation, and cutoff regions with defined DC gain groups (h_FE = 250–630) and stable breakdown ratings: V_(BR)CEO = 25 V, V_(BR)CBO = 30 V, and V_(BR)EBO = 5 V. Its f_T = 200 MHz supports moderate-speed switching up to ~10 MHz in practical designs.

Thermal design relies on junction-to-solder-point resistance ≤215 K/W (SOT-23) and derated power dissipation down to 0 mW at T_S = 150 °C. Cutoff currents remain below 50 µA at 150 °C, supporting operation in extended-temperature industrial environments.

Key Specifications

Pinout & Package

SOT-23 plastic surface-mount package with gull-wing leads; standardized 3-pin footprint compatible with automated placement and reflow soldering. Dimensions: 2.9 × 1.3 × 1.0 mm (L × W × H).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC808-40 E6327, BC808-40T offers identical performance with alternate packaging logistics, while MMBT808 trades AEC-Q101 compliance and tighter h_FE/V_CE(sat) guarantees for broader commercial availability-making the Infineon part optimal for automotive and high-reliability industrial designs.

Availability

BC808-40 E6327 is available at Aetrix Electronics and suitable for automotive lighting control, industrial sensor interfaces, power supply enable circuits, and relay driver stages requiring stable component supply and long-term manufacturability.

Supply support for BC808-40 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 and discrete devices.

The BC807/BC808 series belongs to Infineon's general-purpose bipolar transistor product line, designed specifically for cost-effective, reliable switching and amplification in automotive and industrial applications demanding AEC-Q101 qualification and tight parametric binning.

FAQ

What is the maximum allowable junction temperature for BC808-40 E6327?

The absolute maximum junction temperature (T_j) is 150 °C, as specified in the Absolute Maximum Ratings table. Operation beyond this limit risks permanent degradation of h_FE, increased leakage, or bond wire failure. Derating curves in Figure 7 confirm zero power dissipation at case temperature (T_S) = 150 °C for the SOT-23 variant.

Is BC808-40 E6327 pin-compatible with BC807-40 variants?

Yes-both share identical SOT-23 pinout (Emitter-Base-Collector on pins 1-2-3) and mechanical footprint. However, BC807-40 is NPN with V_CEO = 45 V and complementary characteristics; direct substitution requires circuit topology revision (e.g., swapping high-side/low-side placement and bias polarity).

Does BC808-40 E6327 support pulsed operation above its DC current rating?

Yes-peak collector current (I_CM) is rated at 1000 mA for pulse widths <300 µs and duty cycle <2%. The permissible pulse load curve (Figure 7) shows P_tot(max)/P_tot(DC) ratio increases with shorter pulses, enabling brief surge handling in motor startup or inrush-limited circuits.

How does the AEC-Q101 qualification impact BC808-40 E6327's use in non-automotive designs?

AEC-Q101 qualification ensures enhanced robustness against thermal cycling, humidity, and mechanical stress-benefiting any mission-critical application. While not required outside automotive, it provides measurable reliability advantages in industrial controls, medical devices, and outdoor equipment exposed to wide temperature swings or vibration.