Nexperia USA Inc. BC807-40W/MIX

Overview

BC807-40W/MIX from Nexperia is a PNP general-purpose bipolar junction transistor in SOT323 (SC-70) package, rated for −45 V V_CEO, −500 mA I_C, and DC current gain (h_FE) of 250–600 at V_CE = −1 V and I_C = −100 mA. It serves as a compact, surface-mount switching and amplification device in space-constrained consumer and industrial signal-path circuits.

For engineers reviewing the BC807-40W/MIX datasheet, BC807-40W/MIX pinout, BC807-40W/MIX application, or BC807-40W/MIX equivalent, this page delivers verified electrical parameters, thermal derating behavior, SOT323 footprint details, and real-world use context for discrete PNP transistor selection in low-voltage analog and digital interface stages.

Technical Context

This PNP BJT operates with open-base collector-emitter breakdown of −45 V and emitter-base breakdown of −5 V, supporting reliable cutoff and saturation in low-power linear and switching modes. Its pulsed h_FE range (250–600) and −700 mV V_CE(sat) at I_C = −500 mA / I_B = −50 mA enable efficient current control in bias networks and level-shifting stages.

Thermal resistance R_th(j-a) is 625 K/W on standard FR4 PCB and improves to 431 K/W with enhanced 1 cm² collector pad - directly informing layout-dependent power handling up to 290 mW at T_amb ≤ 25 °C. Transient thermal impedance curves confirm suitability for repetitive short-pulse operation (t_p ≤ 1 ms).

Key Specifications

Pinout & Package

SOT323 (SC-70) is a 3-lead surface-mount plastic package measuring 2.2 mm × 1.35 mm × 0.95 mm, optimized for automated placement and reflow soldering on dense PCBs. Its small footprint supports high-density designs without compromising thermal performance when mounted per Nexperia's recommended footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC807-25W, BC807-40W trades slightly wider h_FE variation for higher guaranteed minimum gain - beneficial in designs needing robust turn-on at low base currents. Versus BC857C, it delivers 5× higher continuous current but sacrifices peak gain headroom, making it the preferred choice for general-purpose switching over precision low-current amplification.

Availability

BC807-40W/MIX is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO interfacing, and low-voltage power sequencing requiring stable component supply across commercial and industrial temperature ranges.

Supply support for BC807-40W/MIX 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 specializing in high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified and standard logic, MOSFETs, and bipolar transistors.

The BC807W series targets cost-sensitive, space-constrained applications demanding proven PNP switching and amplification performance - designed for consumer electronics, industrial controls, and IoT endpoint signal conditioning.

FAQ

What is the maximum allowable base current for BC807-40W/MIX?

The absolute maximum peak base current is −200 mA per the limiting values table. However, for reliable continuous operation, base current should be sized to maintain I_C/I_B ≤ 10 - e.g., ≤ −50 mA for −500 mA collector current - to ensure deep saturation and avoid thermal runaway at elevated temperatures.

Can BC807-40W/MIX replace BC807-16W in an existing design?

Yes, BC807-40W/MIX is pin-compatible and shares identical V_CEO, I_C, package, and thermal specs with BC807-16W. Its higher h_FE (250–600 vs. 100–250) may reduce required base drive, but verify that increased gain does not cause unintended oscillation or slower turn-off in high-speed switching layouts.

Is BC807-40W/MIX qualified for automotive applications?

No - the datasheet explicitly states this variant is non-automotive qualified. It lacks AEC-Q101 stress testing and automotive-grade process controls. For automotive use, Nexperia offers the BC807W-Q series (e.g., BC807-40W-Q), which undergoes extended temperature cycling, humidity testing, and failure analysis per automotive standards.

How does thermal performance change with PCB copper area?

R_th(j-a) drops from 625 K/W (standard footprint) to 431 K/W when the collector pad is expanded to 1 cm² - a 31 % improvement. This allows 290 mW dissipation at 25 °C ambient versus only 200 mW with standard layout, directly extending safe operating time in pulsed-load applications.