Nexperia USA Inc. PDTC124EQAZ

Overview

PDTC124EQAZ from Nexperia is a 50 V, 100 mA NPN resistor-equipped transistor (RET) in a leadless DFN1010D-3 (SOT1215) package with integrated 22 kΩ input and 22 kΩ base-emitter bias resistors. It functions as a digital switch for IC input control and load switching in space-constrained automotive and industrial PCBs, delivering 150 mV V_CE(sat) at I_C = 10 mA / I_B = 0.5 mA and 60× DC current gain at 5 V V_CE.

For engineers reviewing the PDTC124EQAZ datasheet, PDTC124EQAZ pinout, PDTC124EQAZ application, or PDTC124EQAZ equivalent, this device serves as an AEC-Q101-qualified, ultra-small-footprint alternative to discrete BJT + resistor networks-optimized for automatic optical inspection (AOI), high-density routing, and reduced component count in digital interface circuits.

Technical Context

This NPN RET integrates two precision-matched 22 kΩ bias resistors (R1 = R2 = 22 kΩ) to eliminate external base resistors and simplify drive circuitry. Its internal transistor exhibits f_T = 230 MHz and h_FE ≥ 60 at I_C = 5 mA, enabling reliable switching up to medium frequencies while maintaining low saturation voltage.

The DFN1010D-3 package features visible and solderable side pads, 0.37 mm profile, and thermal resistance of 284 K/W (4-layer PCB), supporting high-reliability mounting in thermally demanding automotive modules and compact consumer electronics.

Key Specifications

Pinout & Package

DFN1010D-3 (SOT1215) is a 3-terminal, leadless, ultra-thin surface-mount package measuring 1.1 × 1.0 × 0.37 mm with visible side pads for AOI-compatible solder joint inspection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PDTC124EQA, PDTC124EQAZ adds halogen-free materials and full AEC-Q101 validation; versus BC847B,215, it reduces layout area by 40% and eliminates resistor placement risk-critical for high-volume, miniaturized designs.

Availability

PDTC124EQAZ is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input stages, consumer IoT sensor hubs, and medical portable device logic interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for PDTC124EQAZ 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, reliable discrete and logic devices for automotive, industrial, and consumer markets.

PDTC124EQAZ belongs to the PDTC1xxEQA series of resistor-equipped transistors designed specifically for space-constrained, high-reliability digital switching applications-replacing discrete BJT-resistor combinations with AEC-Q101-qualified, AOI-ready monolithic solutions.

FAQ

What is the maximum continuous collector current for PDTC124EQAZ?

The absolute maximum continuous collector current is 100 mA, as specified in Table 2 (Quick Reference Data) and confirmed in Table 6 (Limiting Values). This rating applies at T_amb ≤ 25 °C on a 4-layer FR4 PCB; derating is required above 25 °C per Figure 2's power derating curve, reaching ~70 mA at 100 °C ambient.

How does the dual-collector pin configuration (pins 3 and 4) affect PCB layout?

Pins 3 and 4 are internally shorted to the same collector node, allowing either or both to be used for connection. This configuration improves current sharing and thermal spreading-designers should route both pins to the same net with equal copper area to maximize power handling and minimize localized heating, especially in high-duty-cycle PWM applications.

Is PDTC124EQAZ compatible with reflow soldering profiles for lead-free assembly?

Yes-Nexperia specifies compatibility with standard JEDEC J-STD-020D lead-free reflow profiles. The DFN1010D-3 package withstands peak temperatures up to 260 °C for 30 seconds; Figure 32 provides the recommended solder land pattern, including 0.35 mm pad width and 0.75 mm center-to-center spacing for reliable tombstoning-free assembly.

Can PDTC124EQAZ replace BC847B in existing designs without layout changes?

No-PDTC124EQAZ uses DFN1010D-3 (1.1 × 1.0 mm), while BC847B uses SOT23 (2.9 × 1.3 mm). Direct replacement requires PCB redesign. However, the integrated 22 kΩ resistors eliminate two external components, offsetting layout effort with reduced BOM cost and improved reliability in new designs targeting miniaturization.