Nexperia USA Inc. BC847BMB,315

Overview

BC847BMB,315 from Nexperia is an AEC-Q101-qualified NPN general-purpose transistor in a leadless ultra-small SOT883B package (1.0 × 0.6 × 0.37 mm), delivering 45 V V_CEO, 100 mA I_C, and DC current gain (h_FE) of 200–450 at V_CE = 5 V and I_C = 2 mA. It serves as a compact switching or amplification element in space-constrained mobile power management and signal conditioning circuits.

For engineers reviewing the BC847BMB,315 datasheet, BC847BMB,315 pinout, BC847BMB,315 application, or BC847BMB,315 equivalent, this page delivers verified package dimensions, thermal resistance (500 K/W), saturation voltage (90–200 mV), AEC-Q101 qualification status, and direct pin-function mapping for rapid PCB layout and automotive-grade reliability validation.

Technical Context

This discrete NPN transistor operates with open-base collector-emitter breakdown up to 45 V and supports peak collector current of 200 mA in single-pulse conditions. Its low 0.37 mm package height and FR4 PCB-compatible thermal resistance (500 K/W) enable high-density placement in portable electronics.

The device exhibits V_BE = 580–700 mV at I_C = 2 mA and V_CE = 5 V, and achieves f_T = 100 MHz at V_CE = 5 V, I_C = 10 mA, enabling stable small-signal amplification up to VHF bands while maintaining low noise figure (2–10 dB).

Key Specifications

Pinout & Package

SOT883B is a leadless, ultra-small surface-mount plastic package measuring 1.0 × 0.6 × 0.37 mm with three solder lands and no leads. Its low profile enables integration into thin mobile modules and wearable PCBs where Z-height is constrained.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN general-purpose transistor applications.

Compared with BC847BW,115 and MMBT3904LT1G, the BC847BMB,315 uniquely combines AEC-Q101 qualification, 0.37 mm height, and 45 V/100 mA ratings-making it the sole option for automotive or ultra-thin portable designs requiring both reliability and miniaturization.

Availability

BC847BMB,315 is available at Aetrix Electronics and suitable for smartphone power switching, automotive LED driver circuits, wearable sensor amplification, and industrial IoT edge node biasing requiring stable component supply across high-volume production cycles.

Supply support for BC847BMB,315 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 advanced packaging.

The BC847xMB series targets space-constrained, reliability-critical applications-including automotive infotainment, mobile power management, and industrial sensing-where ultra-small size and AEC-Q101 compliance are mandatory.

FAQ

What is the maximum junction temperature for BC847BMB,315?

The absolute maximum junction temperature (T_j) is 150 °C, as specified in Table 6 of the Nexperia datasheet. Operation above this temperature risks permanent degradation of h_FE and leakage parameters. Derating is required above 25 °C ambient per the 500 K/W R_th(j-a) value on FR4 PCB.

Is reflow soldering the only recommended assembly method?

Yes-Nexperia explicitly states in Section 11 that reflow soldering is the only recommended method. Wave or hand soldering is not supported due to thermal sensitivity and leadless construction. The recommended reflow profile aligns with J-STD-020 for MSL1 handling.

How does the SOT883B package compare to SOT23 in thermal performance?

Despite its 40% smaller footprint, SOT883B achieves comparable total power dissipation (250 mW) to SOT23 but with higher thermal resistance (500 K/W vs. ~300 K/W for typical SOT23). This means tighter ambient temperature derating is required, especially above 60 °C.

What does the '315' suffix indicate in BC847BMB,315?

The '315' denotes the packing method: 10,000 units per 2 mm pitch, 8 mm tape-and-reel format, as defined in Table 9 of the datasheet. It is not a revision or temperature grade code, but a logistics identifier for automated pick-and-place handling.