Diodes Incorporated UMC5NQ-7

Overview

UMC5NQ from Diodes Incorporated is a dual complementary pre-biased transistor array containing one NPN and one PNP small-signal transistor with integrated bias resistors (R1 = 47 kΩ, R2 = 47 kΩ for Q1; R1 = 4.7 kΩ, R2 = 10 kΩ for Q2) in a SOT353 package. It supports ±50 V supply, delivers ±30 mA output current, and operates from −55°C to +150°C - used in automotive-level signal switching and level translation circuits.

For engineers reviewing the UMC5NQ datasheet, UMC5NQ pinout, UMC5NQ application, or UMC5NQ equivalent, key selection criteria include verified input threshold voltages (VI(ON) = 3 V for NPN, −2.5 V for PNP), guaranteed DC current gain (h_FE ≥ 68 for Q1, ≥ 30 for Q2), and AEC-Q101 qualification for high-reliability automotive control modules.

Technical Context

The UMC5NQ integrates two discrete pre-biased transistors on a single die: Q1 is an NPN with 47 kΩ base-emitter and 47 kΩ base-collector resistors; Q2 is a PNP with 4.7 kΩ and 10 kΩ resistors respectively. Both sections are characterized at TA = +25°C with defined VI(OFF)/VI(ON) thresholds and VO(ON) saturation voltages (0.1–0.3 V for Q1, −0.1 to −0.3 V for Q2).

Thermal performance is specified with PD = 290 mW and R_θJA = 430°C/W on FR-4 PCB per Diodes' recommended pad layout. The device meets AEC-Q101 stress testing for automotive applications and is halogen/antimony-free per "Green" definition (<900 ppm Br, <900 ppm Cl, <1000 ppm Sb).

Key Specifications

Pinout & Package

SOT353 is a 5-pin, leadless, surface-mount plastic package with gull-wing leads, moisture sensitivity level 1, and UL 94V-0 flammability rating. Weight is 0.006 g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar pre-biased transistor applications.

Compared with NSBC114EDXV6T1G and UMC6NQ-7, the UMC5NQ uniquely delivers matched NPN+PNP functionality in one SOT353 package - essential for compact, bidirectional interface circuits without sacrificing AEC-Q101 compliance or thermal robustness.

Availability

UMC5NQ is available at Aetrix Electronics and suitable for automotive door modules, industrial PLC input conditioning, LED driver current sink/sink-switch, and USB port overvoltage protection interfaces requiring stable component supply and long-term lifecycle support.

Supply support for UMC5NQ 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The UMC5NQ belongs to Diodes' Automotive-Grade Pre-Biased Transistor product line, designed specifically for space-constrained, high-reliability signal interface and switching functions in vehicle body electronics and industrial control systems.

FAQ

What is the maximum operating temperature for UMC5NQ?

The UMC5NQ is rated for operation from −55°C to +150°C, with full electrical specifications guaranteed over this range. Its AEC-Q101 qualification confirms performance under automotive thermal cycling profiles, including 1000 cycles between −40°C and +125°C.

Can UMC5NQ replace discrete transistors and four bias resistors?

Yes - the integrated R1/R2 networks for both NPN and PNP sections eliminate the need for four external bias resistors. This reduces PCB area, assembly steps, and potential solder joint failures, especially in automated SMT lines handling high-volume automotive production.

Is UMC5NQ suitable for 3.3 V logic interfacing?

Yes - the NPN section turns on fully at VI(ON) ≤ 3 V, and the PNP section activates at VI(ON) ≥ −2.5 V, making it compatible with standard 3.3 V CMOS outputs driving either side of the complementary pair without level-shifting circuitry.

Does UMC5NQ have any built-in ESD protection?

No - the UMC5NQ does not integrate dedicated ESD protection diodes. However, its absolute maximum input voltage ratings (−10 V to +40 V for NPN, −20 V to +7 V for PNP) provide margin against moderate transients; external TVS devices are recommended for IEC 61000-4-2 compliant designs.