Infineon Technologies BC846SH6433XTMA1

Overview

BC846SH6433XTMA1 from Nexperia is a dual NPN silicon small-signal transistor array in SOT363 (SC74) package, featuring galvanically isolated transistors with matched h_FE (200–450), V_CEO = 65 V, and low V_CE(sat) ≤ 250 mV at I_C = 10 mA / I_B = 0.5 mA. It targets AF input stages and driver circuits in automotive and industrial control modules requiring dual-transistor integration with AEC-Q101 qualification.

For engineers reviewing the BC846SH6433XTMA1 datasheet, BC846SH6433XTMA1 pinout, BC846SH6433XTMA1 application, or BC846SH6433XTMA1 equivalent, key selection criteria include dual-transistor matching tolerance, junction temperature rating (T_j = 150 °C), thermal resistance (R_thJS ≤ 140 K/W), and RoHS-compliant Pb-free packaging for high-reliability embedded systems.

Technical Context

This device integrates two electrically isolated NPN transistors on a single die within a compact SOT363 package, enabling space-constrained dual-amplifier or push-pull driver configurations without cross-coupling. Its h_FE range spans 200–450 at I_C = 2 mA and 10 µA, supporting both low-current biasing and moderate-drive applications.

The transistor pair exhibits tight parameter matching-confirmed by V_CE(sat) ≤ 250 mV and f_T ≥ 250 MHz at I_C = 20 mA-making it suitable for differential amplifiers, current mirrors, and complementary switching where gain and saturation voltage consistency between channels are critical.

Key Specifications

Pinout & Package

SOT363 (SC74) surface-mount package with 6-pin configuration and gull-wing leads; 2.9 mm × 1.9 mm footprint, 1.1 mm max height, and tape-and-reel packaging (3,000 pcs/reel, ø180 mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC846SH6433XTMA1, BC847SH6433XTMA1 trades voltage rating for identical matching and thermal performance, while MBT3904DW1T1G sacrifices gain and saturation voltage control for broader availability-making the BC846S optimal for AEC-Q101–compliant 48 V systems needing matched dual transistors.

Availability

BC846SH6433XTMA1 is available at Aetrix Electronics and suitable for automotive door modules, industrial sensor signal conditioners, consumer audio input stages, and power supply feedback controllers requiring stable component supply and AEC-Q101 compliance.

Supply support for BC846SH6433XTMA1 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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.

BC846SH6433XTMA1 belongs to Nexperia's BC846S/BC847S family of dual NPN transistor arrays designed specifically for space-constrained, high-matching-demand applications in automotive body electronics and industrial control.

FAQ

What is the maximum continuous collector current per transistor in BC846SH6433XTMA1?

The maximum continuous collector current I_C is 100 mA per transistor at T_S ≤ 115 °C. This rating assumes operation within the derated power envelope defined by P_tot = 250 mW and thermal resistance R_thJS ≤ 140 K/W. Peak pulsed current reaches 200 mA for t_p ≤ 10 ms with duty cycle D ≤ 2%.

Is BC846SH6433XTMA1 suitable for use in high-temperature automotive environments?

Yes. It is AEC-Q101 qualified with a guaranteed junction temperature range of −55 °C to +150 °C and storage temperature from −65 °C to +150 °C. Thermal characterization confirms R_thJS ≤ 140 K/W, enabling reliable operation at board temperatures up to 115 °C with full 250 mW power dissipation.

How are the two transistors inside BC846SH6433XTMA1 isolated from each other?

The transistors are galvanically isolated-meaning no shared collector, emitter, or base connections-and fabricated on a single die with physical separation and independent doping profiles. This eliminates substrate coupling and ensures electrical independence, verified by isolation resistance >1 GΩ between any two terminals of different transistors at 100 V bias.

Can BC846SH6433XTMA1 replace single-transistor SOT23 packages in existing designs?

No direct drop-in replacement: BC846SH6433XTMA1 uses SOT363 (6-pin) versus SOT23 (3-pin), requiring PCB layout revision. However, its dual-channel structure enables consolidation of two discrete BC846B devices into one footprint, reducing component count and improving matching-provided routing accommodates six terminals and maintains thermal relief for both collectors.