Nexperia USA Inc. BC847BS-QX

Overview

BC847BS-QX from Nexperia is a dual NPN general-purpose transistor pair in SOT363-3 (TSSOP6) package, rated for 45 V V_CEO, 100 mA I_C, and DC current gain (h_FE) of 200–450 at 2 mA/5 V. It delivers low V_CE(sat) (≤300 mV @ 100 mA/5 mA), low C_c (1.5 pF), and AEC-Q101 qualification - used in automotive signal switching and biasing networks.

For engineers reviewing the BC847BS-QX datasheet, BC847BS-QX pinout, BC847BS-QX application, or BC847BS-QX equivalent, key selection factors include matched h_FE tracking between transistors, thermal resistance (R_th(j-a) = 416 K/W per device on FR4), and absence of mutual interference in dual-transistor operation.

Technical Context

This dual NPN transistor integrates two electrically isolated, closely matched transistors in a single compact SOT363-3 package. Each transistor supports V_CEO = 45 V, I_C = 100 mA continuous, and operates across −65 °C to +150 °C ambient range with junction temperature up to 150 °C.

It features low collector capacitance (1.5 pF) and base-emitter voltage (655 mV typ. @ 2 mA), enabling stable high-frequency amplification up to f_T = 100 MHz. The device is qualified to AEC-Q101, confirming suitability for automotive control modules requiring reliability under thermal cycling and vibration stress.

Key Specifications

Pinout & Package

SOT363-3 (TSSOP6) plastic surface-mount package, 1.3 mm × 2.2 mm footprint, 0.65 mm pitch, 0.45 mm max height; optimized for automated reflow assembly and space-constrained automotive PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC847BPDW1T1G and MBT3904DW1T1G, BC847BS-QX provides superior h_FE consistency and full automotive qualification without trade-offs in voltage or current rating - making it optimal for safety-relevant signal paths in Tier-1 ECUs.

Availability

BC847BS-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and consumer appliance motor control requiring stable component supply over extended product lifecycles.

Supply support for BC847BS-QX 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 efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and mobile markets.

BC847BS-QX belongs to Nexperia's AEC-Q101-qualified general-purpose transistor family, engineered specifically for robust, space-efficient signal switching and amplification in harsh-environment automotive electronics.

FAQ

What is the maximum operating temperature for BC847BS-QX?

The BC847BS-QX has a maximum junction temperature (T_j) of 150 °C and an ambient operating range of −65 °C to +150 °C. Its thermal resistance R_th(j-a) is 416 K/W per device on standard FR4 PCB, meaning power dissipation must be derated above 25 °C ambient per Figure 1 in the datasheet.

Does BC847BS-QX support simultaneous switching of both transistors?

Yes - BC847BS-QX supports independent, simultaneous switching of TR1 and TR2 due to complete electrical isolation between the two NPN die. Pin assignments (E1/B1/C1 and E2/B2/C2) ensure no shared terminals, eliminating crosstalk during concurrent operation in dual-channel logic or driver circuits.

How does the AEC-Q101 qualification impact design validation?

AEC-Q101 qualification confirms BC847BS-QX has passed stress tests including HTGB, ELFR, TC, and HAST - validating reliability for automotive under-hood use. This eliminates need for customer-level qualification testing in most Tier-2 applications, accelerating time-to-market for BCM, lighting, and HVAC modules.

Can BC847BS-QX replace two discrete BC847B transistors?

Yes - BC847BS-QX replaces two SOT23-packaged BC847B transistors while maintaining identical per-transistor electrical specs (V_CEO, I_C, h_FE). Its SOT363-3 footprint reduces board area by ~40% and improves h_FE matching, but requires updated land pattern and stencil design for TSSOP6 reflow.