Nexperia USA Inc. NHDTC114YUX

Overview

NHDTC114YUX from Nexperia is an AEC-Q101-qualified NPN resistor-equipped transistor (RET) in SOT323 (SC-70) package, designed for digital switching with 80 V V_CEO, 100 mA I_O, and built-in 10 kΩ/47 kΩ bias resistors. It replaces discrete BJT + resistor networks in load control and IC input interfacing for automotive and industrial PCBs.

For engineers reviewing the NHDTC114YUX datasheet, NHDTC114YUX pinout, NHDTC114YUX application, or NHDTC114YUX equivalent, this page delivers verified electrical parameters, thermal derating behavior, input voltage thresholds at temperature extremes, and direct substitution guidance against BC846-family alternatives.

Technical Context

This RET integrates a high-voltage NPN transistor with two precision laser-trimmed on-die resistors: R1 = 10 kΩ (input bias) and R2 = 47 kΩ (base-emitter feedback), enabling single-pin logic-level drive without external components. Its 80 V breakdown rating supports 24 V and 48 V industrial bus interfaces.

The device operates with VI(on) = 1.22 V (typ) and VI(off) = 690 mV (typ) at I_C = 10 mA and V_CE = 0.3 V / 5 V respectively, delivering sharp switching transitions across –40 °C to +150 °C ambient. Thermal resistance R_th(j-a) is 532 K/W on single-sided FR4, limiting continuous power to 235 mW.

Key Specifications

Pinout & Package

SOT323 (SC-70) plastic surface-mounted package: 1.3 mm × 1.8 mm × 0.9 mm body, 0.65 mm lead pitch, 3-terminal configuration with gull-wing leads optimized for reflow soldering.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN resistor-equipped transistor applications.

Compared with BC846B,115, NHDTC114YUX reduces component count and improves noise immunity; compared with NHDTC143ZU, it offers higher VI(on) for better 3.3 V system compatibility and lower input bias current for battery-sensitive designs.

Availability

NHDTC114YUX is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive LED drivers, PLC digital output modules, and IoT node power sequencing requiring stable component supply and AEC-Q101 assurance.

Supply support for NHDTC114YUX 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 efficiency technologies, delivering high-performance, high-reliability discrete and logic devices for automotive, industrial, and consumer markets.

NHDTC114YUX belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered to simplify digital switching designs by integrating precision biasing resistors into miniature SOT323 packages for space- and cost-constrained applications.

FAQ

What is the maximum allowable input voltage (VI) for NHDTC114YUX?

The absolute maximum input voltage VI is +40 V, as specified in Table 6 (Limiting Values). This rating applies with emitter grounded and collector open. Exceeding +40 V risks permanent damage to the internal R1 resistor and transistor junction. For reliable operation in 24 V systems, VI should be limited to ≤30 V with appropriate series resistance if driven from unregulated sources.

How does thermal derating affect continuous current capability?

At ambient temperatures above 25 °C, the 100 mA output current rating must be reduced per the power derating curve in Figure 1. On single-sided FR4, total power dissipation drops from 235 mW at 25 °C to zero at 125 °C, implying I_O must scale with √(P_tot) due to quadratic I²R heating. At 85 °C ambient, maximum continuous I_O is approximately 75 mA.

Can NHDTC114YUX replace BC846B in existing designs without layout changes?

Yes - NHDTC114YUX uses the same SOT323 (SC-70) footprint as BC846B, enabling drop-in replacement. However, the internal 10 kΩ/47 kΩ resistor network eliminates the need for the external base resistor used with BC846B. Layout revision is recommended to remove that resistor and verify signal integrity, especially in high-noise environments where the built-in hysteresis improves immunity.

What is the significance of the '5N%' marking code on NHDTC114YUX?

The marking code '5N%' identifies the device as NHDTC114YUX per Table 5, where '%' is a placeholder for the manufacturing site code (e.g., 'A' for Nijmegen, 'B' for Bangkok). This 3-character top-side marking is laser-etched on the SOT323 package and is used for traceability and counterfeit prevention; full traceability data is available through Nexperia's lot documentation system.