Infineon Technologies BC848AE6327HTSA1

Overview

BC848AE6327HTSA1 from Infineon Technologies is an NPN silicon small-signal transistor designed for audio-frequency input stages and driver applications. It delivers h_FE = 110–220 (at I_C = 10 µA, V_CE = 5 V), V_CEO = 30 V, V_CE(sat) ≤ 250 mV (I_C = 100 mA, I_B = 5 mA), and f_T = 250 MHz - enabling low-noise amplification in compact analog signal paths.

For engineers reviewing the BC848AE6327HTSA1 datasheet, BC848AE6327HTSA1 pinout, BC848AE6327HTSA1 application, or BC848AE6327HTSA1 equivalent, key selection criteria include its AEC-Q101 qualification, SOT23 package compatibility, low V_CE(sat) for efficient switching, and 1.5–3 dB noise figure in 1–15 kHz band - critical for automotive sensor interfaces and portable audio preamps.

Technical Context

This transistor operates as a general-purpose NPN amplifier/switch with complementary PNP pairing (BC856–BC860 series). Its h_FE grouping (A-grade) ensures consistent current gain across production lots, while the 30 V V_CEO rating targets mid-voltage analog rails in automotive body control modules and industrial I/O conditioning circuits.

Thermal performance is defined by R_thJS ≤ 240 K/W (SOT23, T_S ≤ 71 °C), supporting continuous 100 mA collector operation within ambient-limited PCB layouts. The 0.95 pF C_cb and 9 pF C_eb values enable stable high-frequency biasing without parasitic oscillation in discrete gain stages.

Key Specifications

Pinout & Package

BC848AE6327HTSA1 is housed in a RoHS-compliant SOT23 plastic surface-mount package (JEDEC TO-236AB), measuring 2.9 × 1.3 × 1.0 mm with gull-wing leads. Thermal pad is not present; soldering requires standard reflow profile for plastic packages.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC848BW and MMBT3904LT1G, BC848AE6327HTSA1 uniquely combines AEC-Q101 qualification, 330 mW power handling in SOT23, and tight h_FE grouping - making it optimal for automotive signal conditioning where reliability, thermal headroom, and gain consistency are jointly required.

Availability

BC848AE6327HTSA1 is available at Aetrix Electronics and suitable for automotive door modules, industrial 4–20 mA transmitters, and portable audio line drivers requiring stable component supply across extended product lifecycles.

Supply support for BC848AE6327HTSA1 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.

BC848AE6327HTSA1 belongs to Infineon's BC846–BC850 family of AEC-Q101-qualified general-purpose NPN transistors, engineered specifically for robust analog signal conditioning in automotive body electronics and industrial sensor interfaces.

FAQ

Is BC848AE6327HTSA1 pin-compatible with BC847B?

Yes - both use identical SOT23 pinout (1=Base, 2=Emitter, 3=Collector) and share mechanical dimensions. However, BC848A has V_CEO = 30 V (vs. 45 V for BC847B) and lower h_FE min (110 vs. 200), so substitution requires verification of voltage headroom and gain margin in the target circuit.

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

At T_A = 85 °C, derating from P_tot = 330 mW (at T_S ≤ 71 °C) yields ~180 mW usable power. Using V_CE(sat) = 250 mV max, this supports I_C ≤ 720 mA in saturation - but practical linear-mode limits are governed by junction temperature: I_C ≤ 100 mA is recommended for sustained operation with adequate PCB copper area.

Does BC848AE6327HTSA1 support pulsed operation beyond 200 mA?

Yes - the datasheet specifies I_CM = 200 mA for pulse width ≤ 10 ms (duty cycle ≤ 2%). With proper thermal layout and short pulses, peak currents up to 300 mA are feasible, but V_CE(sat) rises nonlinearly above 100 mA, increasing conduction loss and requiring careful SOA validation.

How does the AEC-Q101 qualification impact PCB layout guidelines?

AEC-Q101 qualification confirms reliability under automotive thermal cycling (−40 °C to +125 °C) and humidity testing, but imposes no unique layout rules. Standard SOT23 practices apply: 0.3 mm solder mask dams, 0.25 mm trace clearance to adjacent pads, and ≥10 mm² thermal copper pour under the package for R_thJS optimization - all verified during qualification testing.