Nexperia USA Inc. BC807-40W,135

Overview

BC807-40W from Nexperia is a PNP general-purpose bipolar junction transistor (BJT) in SOT323 (SC-70) package, rated for −45 V V_CEO, −500 mA continuous collector current, 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 or linear amplification device in low-power analog and digital interface circuits.

For engineers reviewing the BC807-40W datasheet, BC807-40W pinout, BC807-40W application, or BC807-40W equivalent, this page delivers verified electrical parameters, thermal derating behavior, base-emitter saturation voltage (−1.2 V max), collector-emitter saturation voltage (−700 mV max), and real-world performance curves across temperature and current ranges - all critical for discrete BJT selection in space-constrained designs.

Technical Context

This PNP transistor operates with open-base collector-emitter breakdown of −45 V and emitter-base breakdown of −5 V, supporting robust biasing in negative-rail signal conditioning and level-shifting topologies. Its pulsed peak collector current reaches −1 A, enabling short-duration load switching beyond steady-state limits.

Thermal resistance from junction to ambient is 431 K/W on FR4 PCB with 1 cm² collector pad, and 625 K/W on standard footprint - directly informing power dissipation margins in thermally constrained layouts. The device exhibits typical transition frequency (f_T) of 80 MHz, confirming suitability for audio-frequency amplification and low-speed digital switching up to ~10 MHz.

Key Specifications

Pinout & Package

SOT323 (SC-70) is a 3-pin, ultra-small surface-mount plastic package measuring 2.2 mm × 1.35 mm × 0.95 mm (L × W × H), optimized for high-density PCB layouts and reflow-compatible assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC807-25W and MMBT3906LT1G, BC807-40W delivers the highest guaranteed h_FE floor (250), best voltage margin (−45 V), and smallest footprint (SOT323), making it optimal for miniaturized, high-reliability PNP switching where base drive efficiency and transient robustness are prioritized.

Availability

BC807-40W is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller interface translation, low-power audio preamplifiers, and power supply enable switching requiring stable component supply across industrial, consumer, and embedded design cycles.

Supply support for BC807-40W 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 semiconductors, delivering high-performance, reliable components for automotive, industrial, mobile, and computing markets.

The BC807W series belongs to Nexperia's general-purpose discrete transistor product line, engineered specifically for compact, cost-effective switching and amplification in space- and power-constrained applications - emphasizing manufacturability, thermal resilience, and parametric consistency.

FAQ

What is the maximum allowable base current for continuous operation?

The absolute maximum peak base current is −200 mA per datasheet Table 6, but continuous operation must respect power dissipation limits. At 25 °C ambient, with V_BE ≈ −1.2 V, sustained I_B > −160 mA risks exceeding P_tot = 290 mW even before collector current is applied. For reliable long-term use, keep I_B ≤ −50 mA unless thermal management is enhanced.

Can BC807-40W replace BC807-16W in existing designs?

Yes, BC807-40W is a direct drop-in replacement for BC807-16W in the same SOT323 package with identical pinout and voltage/current ratings. Its higher minimum h_FE (250 vs. 100) improves base drive efficiency and reduces sensitivity to temperature-induced gain drift, though bias resistors may require minor adjustment if original design operated near h_FE lower bound.

Does BC807-40W meet automotive qualification standards?

No. Per Revision History Table 9, BC807W_SER v.8 explicitly states "Product(s) changed to non-automotive qualification" as of July 2022. It is not AEC-Q101 qualified, lacks automotive-grade screening, and should not be used in safety-critical or vehicle-mounted systems without additional validation and risk mitigation by the end customer.

How does thermal derating affect power handling above 25 °C ambient?

Per Figure 1, P_tot decreases linearly above 25 °C: at 75 °C ambient, maximum dissipation drops to ~200 mW on standard footprint and ~240 mW on 1 cm² pad. This corresponds to a derating factor of −2.2 mW/°C (standard) and −1.3 mW/°C (enhanced pad), requiring recalculation of I_C limits based on actual board layout and expected ambient conditions.