Infineon Technologies BC848BWE6327BTSA1

Overview

BC848BWE6327BTSA1 from Infineon Technologies is an NPN silicon general-purpose bipolar junction transistor (BJT) designed for audio-frequency input stages and driver applications. It features a DC current gain (h_FE) of 200–450 at I_C = 2 mA, V_CE = 5 V; V_CEO = 30 V; V_CE(sat) ≤ 250 mV at I_C = 10 mA, I_B = 0.5 mA; f_T = 250 MHz; and low noise (F = 1.2–4 dB) in the 1 kHz band - enabling use in low-noise preamplifier and signal conditioning circuits.

For engineers reviewing the BC848BWE6327BTSA1 datasheet, BC848BWE6327BTSA1 pinout, BC848BWE6327BTSA1 application, or BC848BWE6327BTSA1 equivalent, key selection criteria include its SOT-323 (SC-70) package footprint, AEC-Q101 qualification for automotive environments, RoHS-compliant lead-free construction, and verified performance in linear amplification and switching roles up to 100 mA collector current.

Technical Context

This transistor operates as a discrete NPN amplifier/switch with fixed-emitter bias topology. Its h_FE grouping (B-grade) ensures consistent current amplification across production lots, while the 30 V V_CEO rating targets mid-voltage analog signal paths. The 250 MHz f_T supports stable operation well into the VHF range for RF-coupled AF stages.

Thermal design relies on its SOT-323 package's R_thJS ≤ 250 K/W (per datasheet Fig. 8), enabling 250 mW dissipation at T_S ≤ 135 °C. Low C_cb (0.95 pF typ.) and C_eb (9 pF typ.) minimize Miller effect, supporting high-fidelity small-signal amplification without oscillation risk.

Key Specifications

Pinout & Package

The BC848BWE6327BTSA1 is housed in a RoHS-compliant SOT-323 (SC-70) plastic surface-mount package with gull-wing leads, optimized for automated placement and reflow soldering in space-constrained PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN small-signal transistor applications.

Compared with BC848BWE6327BTSA1, BC848BW,115 offers identical electrical behavior but lacks automotive qualification, while MMBT3904LT1G trades guaranteed low-noise performance and tighter h_FE for higher voltage tolerance and broader gain variability - impacting design stability in precision analog stages.

Availability

BC848BWE6327BTSA1 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial sensor interfaces, and portable biometric devices requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for BC848BWE6327BTSA1 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 infrastructure.

This transistor belongs to Infineon's BC846–BC850 family of general-purpose NPN/PNP BJTs engineered for high-reliability analog signal conditioning and switching in automotive and industrial environments.

FAQ

Is BC848BWE6327BTSA1 pin-compatible with BC847B variants?

No - BC848BWE6327BTSA1 uses SOT-323 (SC-70) packaging, while BC847B variants are offered in SOT-23. Though both share identical pinout order (E-B-C), the physical land patterns differ: SOT-323 pads are narrower and closer together, requiring separate PCB footprints and stencil apertures.

What is the maximum allowable continuous collector current at 85°C ambient?

At T_A = 85°C, the maximum continuous I_C is limited by thermal derating. With P_tot = 250 mW at T_S = 135°C and R_thJA ≈ 300 K/W (typical for SOT-323 on 2-layer board), I_C must remain ≤ 80 mA to maintain junction temperature below 150°C under worst-case convection conditions.

Does this part support pulsed operation above its DC power rating?

Yes - the datasheet permits peak power up to 500 mW for pulse widths ≤ 10 ms (duty cycle ≤ 2%), provided average power remains within 250 mW. This enables short-duration surge handling in relay driving or LED strobing applications without thermal saturation.

Can BC848BWE6327BTSA1 replace BC848C in existing designs?

Only with circuit validation - BC848C has h_FE = 420–800 (vs. 200–450 for BC848B), resulting in higher gain and potential instability in feedback networks. Bias resistors may require adjustment to maintain Q-point, especially in linear amplifier configurations sensitive to h_FE variation.