Infineon Technologies BC846UE6727HTSA1

Overview

BC846UE6727HTSA1 from Infineon Technologies is a dual NPN silicon small-signal transistor array in SOT-363 (SC-74) package, designed for AF input stages and driver applications. It features two galvanically isolated transistors with matched h_FE (min 200 at I_C = 10 µA), V_CEO = 65 V, and low V_CE(sat) of 90 mV (typ) at I_C = 10 mA / I_B = 0.5 mA. Used in automotive audio preamplifier stages per AEC-Q101 qualification.

For engineers reviewing the BC846UE6727HTSA1 datasheet, BC846UE6727HTSA1 pinout, BC846UE6727HTSA1 application, or BC846UE6727HTSA1 equivalent, key selection criteria include dual-transistor matching tolerance, junction temperature rating (150 °C), thermal resistance (R_thJS ≤ 130 K/W), and AEC-Q101 qualification for automotive signal conditioning circuits.

Technical Context

This dual NPN transistor array integrates two electrically isolated gain stages sharing one thermally coupled die in a compact SOT-363 package. Each transistor supports DC current gain (h_FE) from 200 to 450 across I_C = 10 µA–100 mA, with f_T = 250 MHz at I_C = 20 mA, enabling stable operation in audio-frequency amplification and switching up to ~100 kHz.

It operates with V_CB0 = 80 V, V_EB0 = 6 V, and exhibits C_cb = 0.95 pF and C_eb = 9 pF at specified bias conditions - parameters critical for minimizing Miller effect and maintaining bandwidth in cascaded gain blocks.

Key Specifications

Pinout & Package

SOT-363 (SC-74) surface-mount package with 6-pin configuration and gull-wing leads; footprint compatible with JEDEC MO-178 standards and reflow soldering profiles.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual NPN transistor array applications.

Compared with BC846UE6727HTSA1, BC847BE6327HTSA1 trades breakdown voltage for higher gain at mid-current, while MBT3904DW1T1G offers broader commercial availability but lacks automotive validation and thermal performance.

Availability

BC846UE6727HTSA1 is available at Aetrix Electronics and suitable for automotive audio systems, industrial PLC analog input modules, USB-C power delivery monitors, and smart lighting dimming drivers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BC846UE6727HTSA1 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.

This part belongs to Infineon's BC846/BC847 series of automotive-qualified discrete transistors, engineered for high-reliability signal amplification and switching in safety-critical vehicle subsystems.

FAQ

Is BC846UE6727HTSA1 pin-compatible with BC846S or BC847S variants?

Yes - all BC846S, BC846U, and BC847S variants share identical SOT-363 pinout (E1-B1-C2-E2-B2-C1) and mechanical footprint. However, electrical specifications differ: BC846U has V_CEO = 65 V and R_thJS ≤ 130 K/W, while BC847S has V_CEO = 45 V and R_thJS ≤ 140 K/W. Direct substitution requires verification of voltage and thermal requirements.

What is the maximum continuous collector current per transistor?

The absolute maximum continuous collector current is 100 mA per transistor at T_S ≤ 118 °C. Derating is required above this temperature: P_tot decreases linearly to zero at 150 °C junction temperature. Peak pulsed current up to 200 mA is allowed for t_p ≤ 10 ms with duty cycle D ≤ 2%.

Does BC846UE6727HTSA1 support lead-free reflow soldering?

Yes - it is RoHS-compliant and qualified for standard Pb-free reflow profiles (JEDEC J-STD-020), including peak temperatures up to 260 °C for 30 seconds. The SOT-363 package uses matte tin-plated leads and passes intermetallic growth and wetting tests per IPC-J-STD-002.

How is the "U" suffix in BC846U differentiated from "S" and "E" variants?

The "U" denotes the version with highest V_CEO (65 V), lowest R_thJS (≤130 K/W), and qualification to AEC-Q101. "S" indicates standard gain grade (h_FE = 110–220), while "U" specifies tighter h_FE range (200–450) and enhanced thermal performance - critical for automotive signal chain stability.