Infineon Technologies BC847CWH6778XTSA1

Overview

BC847CWH6778XTSA1 from Nexperia is an NPN silicon general-purpose bipolar junction transistor (BJT) designed for audio-frequency input stages and driver circuits. It features h_FE = 420–800 (at I_C = 2 mA, V_CE = 5 V), V_CEO = 45 V, V_CE(sat) ≤ 250 mV (I_C = 10 mA, I_B = 0.5 mA), and low noise (F = 1.2–4 dB at 1 kHz). It is used in automotive signal conditioning modules compliant with AEC-Q101.

For engineers reviewing the BC847CWH6778XTSA1 datasheet, BC847CWH6778XTSA1 pinout, BC847CWH6778XTSA1 application, or BC847CWH6778XTSA1 equivalent, key selection criteria include DC current gain group C, SOT323 package thermal resistance (R_thJS ≤ 90 K/W), and low-noise performance in 30 Hz–15 kHz band.

Technical Context

This transistor operates as a linear amplifying or switching element in low-voltage analog front-ends. Its h_FE group C guarantees minimum DC current gain of 420 at I_C = 2 mA, and its f_T = 250 MHz supports stable operation up to mid-VHF range under small-signal conditions.

The device uses epitaxial planar technology with Pb-free (RoHS-compliant) construction and meets AEC-Q101 stress testing for automotive use. Its SOT323 package enables compact board layout while maintaining thermal performance up to T_j = 150 °C.

Key Specifications

Pinout & Package

BC847CWH6778XTSA1 is housed in a RoHS-compliant SOT323 (SC-70) plastic surface-mount package, measuring 2.1 mm × 1.25 mm × 0.95 mm, with gull-wing leads optimized for reflow soldering and thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC847CW,115 and MMBT3904LT1G, BC847CWH6778XTSA1 delivers tighter h_FE binning, lower noise, and guaranteed AEC-Q101 qualification-making it the preferred choice for new automotive and industrial signal-conditioning designs requiring long-term reliability and precision gain control.

Availability

BC847CWH6778XTSA1 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor transmitters, and medical front-end amplifiers requiring stable component supply and long lifecycle support.

Supply support for BC847CWH6778XTSA1 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

Nexperia is a global semiconductor expert focused on essential semiconductors, delivering high-performance, reliable components for automotive, industrial, and consumer markets.

BC847CWH6778XTSA1 belongs to Nexperia's BC846–BC850 family of AEC-Q101-qualified general-purpose NPN transistors, engineered specifically for robust, low-noise signal amplification and switching in harsh-environment electronics.

FAQ

Is BC847CWH6778XTSA1 pin-compatible with BC847BW?

No. BC847CWH6778XTSA1 uses SOT323 (3-pin, 1–2–3 = E–B–C), while BC847BW uses SOT23 (same pin order but larger footprint and different thermal profile). Mechanical interference and solder joint reliability may be compromised if substituted without PCB revision.

What is the maximum continuous collector current at 125 °C ambient?

At T_A = 125 °C, derating applies: P_tot drops to ~120 mW (from 250 mW at T_S ≤ 128 °C), limiting I_C to approximately 60 mA under V_CE = 5 V conditions, assuming no additional heatsinking.

Does this part support pulsed operation beyond 250 mW?

Yes. Permissible pulse load ratio (P_tot(max)/P_tot(DC)) reaches 5× for t_p ≤ 10 ms (duty cycle ≤ 2%), enabling short-duration peak currents up to 200 mA without exceeding junction temperature limits.

Can BC847CWH6778XTSA1 replace BC847C in existing designs?

Only if the original BC847C was specified in SOT323 package (e.g., BC847C,115). BC847CWH6778XTSA1 shares identical electrical specs and pinout but adds AEC-Q101 qualification and tighter thermal resistance-no layout change needed, but qualification documentation must be updated.