Nexperia USA Inc. PDTA114EQBZ

Overview

PDTA114EQB from Nexperia is a 50 V, 100 mA PNP resistor-equipped transistor (RET) in a DFN1110D-3 (SOT8015) leadless package with side-wettable flanks. It integrates 10 kΩ input and 10 kΩ emitter-base bias resistors, delivers −100 mA output current, exhibits −100 mV V_CE(sat) at I_C = −10 mA/I_B = −0.5 mA, and operates across −55 °C to +150 °C ambient for digital switching in space-constrained consumer and industrial control boards.

For engineers reviewing the PDTA114EQB datasheet, PDTA114EQB pinout, PDTA114EQB application, or PDTA114EQB equivalent, this page provides verified pin functions, confirmed thermal derating curves, validated off-state input voltage range (−1.1 V to −0.8 V), and direct comparison against BC857-series alternatives for load-switching and IC-input control use cases.

Technical Context

This PNP RET uses an integrated bipolar transistor with two monolithically embedded silicon resistors-R1 (10 kΩ) between base and input terminal, R2 (10 kΩ) between base and emitter-to eliminate external bias components. Its fixed R2/R1 ratio of 1.0 enables predictable turn-on/off thresholds without discrete resistor selection.

The device operates as a single-polarity digital switch: input terminal controls base current flow through R1, emitter is internally tied to GND terminal, and collector serves as active-low output. Its −50 V V_CEO rating and low 0.5 mm profile support high-density routing in battery-powered IoT nodes and portable power management circuits.

Key Specifications

Pinout & Package

DFN1110D-3 (SOT8015) is a 3-terminal, leadless, surface-mount plastic package measuring 1.1 mm × 1.0 mm × 0.48 mm with side-wettable flanks for automated optical inspection (AOI) of solder joints. Its low 0.5 mm height supports ultra-thin end-equipment designs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PDTC114EQB, PDTA114EQB enables simpler ground-referenced switching but lacks sourcing capability; versus BC857B, it reduces assembly cost and improves reliability by eliminating two solder joints and resistor tolerances.

Availability

PDTA114EQB is available at Aetrix Electronics and suitable for LED driver circuits, digital input protection networks, sensor module load switching, and BC857B replacement projects requiring stable component supply and long-term manufacturability.

Supply support for PDTA114EQB 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-enhancing components, delivering high-performance, reliable, and scalable solutions for automotive, industrial, mobile, and computing markets.

The PDTA114EQB belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered specifically to replace discrete transistor-resistor combinations in digital switching applications while minimizing PCB area and assembly complexity.

FAQ

What is the maximum continuous collector current for PDTA114EQB?

The maximum continuous collector current is −100 mA at T_amb ≤ 25 °C on a standard FR4 PCB with 70 µm copper. Derating applies above 25 °C per Figure 1: at 75 °C ambient, maximum allowable current drops to approximately −340 mW / (−100 mV) = −3.4 A × 0.1 = −340 mA - but actual limit is constrained by package thermal resistance (298 K/W), yielding ~−65 mA at 100 °C ambient.

Can PDTA114EQB be used in place of a standard BC857 transistor?

Yes, PDTA114EQB serves as a functional replacement for BC857B in digital switching roles, offering identical −50 V V_CEO and −100 mA I_C ratings. Its integrated 10 kΩ/10 kΩ resistor network eliminates two external components, though pinout differs (SOT8015 vs SOT323), requiring PCB layout adaptation unless using adapter footprints.

Does PDTA114EQB support automatic optical inspection (AOI)?

Yes, the DFN1110D-3 (SOT8015) package features side-wettable flanks explicitly designed for AOI of solder joints. This allows full automated visual verification of all three solder terminations post-reflow, improving first-pass yield in high-volume manufacturing without X-ray inspection.

What is the typical transition frequency (f_T) of the internal transistor?

The typical transition frequency is 180 MHz at V_CE = −5 V, I_C = −10 mA, and f = 100 MHz, as specified in Table 8. This value reflects the intrinsic high-frequency capability of the bare transistor die before resistor integration, confirming suitability for low-speed digital switching (<10 MHz) with margin.