Nexperia USA Inc. PMBT3904-QVL

Overview

PMBT3904-QVL from Nexperia is an AEC-Q101-qualified NPN switching transistor in SOT23 package, rated for 40 V V_CEO, 200 mA I_C, and DC current gain (h_FE) of 100–300 at I_C = 10 mA. It serves as a general-purpose discrete switch or small-signal amplifier in automotive body control modules, LED drivers, and sensor interface circuits.

For engineers reviewing the PMBT3904-QVL datasheet, PMBT3904-QVL pinout, PMBT3904-QVL application, or PMBT3904-QVL equivalent, key selection criteria include its automotive qualification, low V_CE(sat) (≤850 mV at I_C/I_B = 10), fast switching (t_f ≤ 50 ns), and thermal resistance (R_th(j-a) = 500 K/W on FR4).

Technical Context

This NPN bipolar junction transistor operates in active or saturation mode with base-controlled current amplification. Its design supports reliable switching up to 200 mA under 40 V collector-emitter bias, with guaranteed h_FE across −55 °C to +150 °C ambient range.

Switching performance is defined by t_d ≤ 35 ns, t_r ≤ 35 ns, t_s ≤ 200 ns, and t_f ≤ 50 ns under standardized test conditions (I_Bon = 1 mA, I_Boff = −1 mA). Thermal behavior assumes standard FR4 PCB mounting with single-sided copper and tin plating.

Key Specifications

Pinout & Package

SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm pitch); 3-terminal configuration with gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC846B,215 and MMBT3904LT1G, the PMBT3904-QVL provides verified automotive qualification with consistent 40 V/200 mA ratings and optimized thermal resistance on standard FR4-making it the preferred choice for cost-sensitive, volume automotive electronics where qualification evidence is mandatory.

Availability

PMBT3904-QVL is available at Aetrix Electronics and suitable for automotive lighting control, industrial sensor interface, and consumer power management requiring stable component supply, AEC-Q101 compliance, and SOT23 footprint consistency.

Supply support for PMBT3904-QVL 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 PMBT3904-QVL belongs to Nexperia's AEC-Q101-qualified general-purpose transistor product line, designed specifically for robust, cost-effective switching and amplification in harsh-environment automotive and industrial systems.

FAQ

Is PMBT3904-QVL pin-compatible with the standard PMBT3904?

Yes-PMBT3904-QVL uses the same SOT23 package and identical pinning (Pin 1 = Base, Pin 2 = Emitter, Pin 3 = Collector) as the non-automotive PMBT3904. The "-QVL" suffix denotes AEC-Q101 qualification and specific traceability coding, not mechanical or electrical deviation.

What is the maximum allowable continuous power dissipation at 85 °C ambient?

At T_amb = 85 °C, P_tot must be derated linearly from 250 mW at 25 °C using R_th(j-a) = 500 K/W. This yields P_tot(max) = (150 °C − 85 °C) / 500 K/W = 130 mW, assuming T_j(max) = 150 °C is not exceeded.

Does PMBT3904-QVL support pulsed operation beyond 200 mA?

No-the 200 mA rating applies to both continuous and peak collector current (I_CM). Table 5 explicitly states I_CM = 200 mA with no higher pulsed rating, unlike some transistors with separate I_C(pulse) specifications. Exceeding this risks permanent degradation.

Can PMBT3904-QVL replace BC847C in existing designs?

Only after validation-while both are SOT23 NPN transistors, BC847C has h_FE = 420–800 and V_CEO = 45 V, differing significantly in gain and voltage margin. PMBT3904-QVL's lower h_FE may require base drive adjustment, and its AEC-Q101 status adds qualification overhead not present in BC847C.