Nexperia USA Inc. PDTA114ET,235

Overview

PDTA114ET from Nexperia is a PNP resistor-equipped transistor (RET) in SOT23 package, designed for digital switching with integrated 10 kΩ input bias resistor (R1) and 10 kΩ emitter feedback resistor (R2), −50 V V_CEO, −100 mA I_O, and −150 mV V_CEsat at −10 mA/−0.5 mA drive - used to control logic inputs and low-power loads in industrial control modules.

For engineers reviewing the PDTA114ET datasheet, PDTA114ET pinout, PDTA114ET application, or PDTA114ET equivalent, this page delivers verified pin functions, real-world switching use cases, thermal derating behavior, and validated alternatives for BC847-based digital interface designs.

Technical Context

This PNP RET integrates two precision thin-film resistors (R1 = 10 kΩ ±30 %, R2/R1 = 1.0 ±20 %) directly into the die assembly, eliminating external base bias components and fixing the input impedance at ~10 kΩ. Its internal transistor exhibits h_FE ≥30 at −5 V V_CE, −5 mA I_C, and f_T = 180 MHz (typ.) - confirming suitability for medium-speed digital switching up to ~10 MHz.

The device operates with VI(on) = −1.8 V (typ.) and VI(off) = −0.95 V (typ.), enabling direct interfacing with 3.3 V and 5 V CMOS/TTL logic families without level-shifting. Thermal resistance R_th(j-a) = 500 K/W on FR4 PCB ensures stable operation up to +125 °C ambient when power dissipation remains ≤125 mW.

Key Specifications

Pinout & Package

SOT23 (TO-236AB) plastic surface-mount package: 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch, standard footprint compatible with reflow and wave soldering per Figures 11–12.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP digital switching applications.

Compared with PDTC114ET and BC807-40, PDTA114ET uniquely delivers fixed high-side switching with zero external bias components, optimized thermal performance on standard FR4, and guaranteed VI(on)/VI(off) thresholds for robust 3.3 V logic compatibility - making it ideal for cost-sensitive, high-volume digital interface designs.

Availability

PDTA114ET is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control units, PLC digital output modules, and consumer appliance control boards requiring stable component supply and long-term production continuity.

Supply support for PDTA114ET 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, and scalable components for automotive, industrial, and consumer markets.

PDTA114ET belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to replace discrete BJT + resistor combinations in digital logic interfacing and low-power switching applications.

FAQ

What is the maximum safe operating voltage for PDTA114ET in continuous DC switching?

The absolute maximum collector-emitter voltage (V_CEO) is −50 V with open base, per IEC 60134 limiting values. For reliable long-term operation, Nexperia recommends limiting V_CE to ≤−36 V in continuous DC applications to maintain ≥20 % safety margin and avoid accelerated degradation under thermal stress.

Can PDTA114ET be used with 1.8 V logic controllers?

No - PDTA114ET requires VI(on) ≤ −1.8 V (typ.) to saturate, and its VI(off) threshold is −0.95 V (typ.). At 1.8 V logic high, the effective input voltage is insufficient to overcome the base-emitter turn-on potential, resulting in marginal or non-saturating operation. It is validated for 3.3 V and 5 V logic families only.

How does the built-in R2 resistor affect switching speed?

R2 (10 kΩ) provides emitter feedback that stabilizes DC bias but introduces minor Miller-effect capacitance. Measured t_on/t_off remains ≤100 ns at 10 mA load due to low C_c = 3 pF and high f_T = 180 MHz - making it suitable for PWM frequencies up to 5 MHz without added gate drivers.

Is PDTA114ET qualified for automotive applications?

No - the official Nexperia datasheet states "Non-automotive qualified products" and explicitly excludes qualification per AEC-Q101. While it operates across −40 °C to +125 °C, it lacks automotive-specific reliability testing (e.g., HTOL, ESD, mechanical shock). Use only in industrial or consumer systems unless independently validated per vehicle OEM requirements.