Nexperia USA Inc. PDTA115EMB,315

Overview

PDTA115EMB from Nexperia is a PNP resistor-equipped transistor (RET) in a leadless DFN1006B-3 (SOT883B) package, designed as a single-chip digital switch with integrated 100 kΩ input and emitter bias resistors. It delivers -20 mA output current, supports -50 V collector-emitter voltage, and features AEC-Q101 qualification for automotive use in low-power peripheral driver circuits.

For engineers reviewing the PDTA115EMB datasheet, PDTA115EMB pinout, PDTA115EMB application, or PDTA115EMB equivalent, this device serves as a space-optimized, drop-in replacement for discrete base-resistor transistor pairs in digital logic interfacing, IC input control, and mobile power management where board area and assembly cost are critical.

Technical Context

This PNP RET integrates two precision bias resistors (R1 = 100 kΩ, R2/R1 = 1.0 typ.) directly into the silicon die, eliminating external components required for base biasing in switching applications. Its internal topology ensures predictable turn-on/off thresholds and stable DC current gain (hFE ≥ 80 at IC = -5 mA).

The device operates with VI(on) ≤ -1.6 V and VI(off) ≥ -1.2 V at Tamb = 25 °C, enabling reliable logic-level compatibility with 3.3 V and 5 V microcontroller outputs. Thermal resistance Rth(j-a) = 500 K/W and 0.37 mm package height support high-density PCB layouts in thermally constrained environments.

Key Specifications

Pinout & Package

DFN1006B-3 (SOT883B) is a leadless ultra-small surface-mount plastic package measuring 1.0 × 0.6 × 0.37 mm, optimized for high-density portable and automotive PCBs. Its three solder lands enable automated placement and reflow compatibility with standard footprint dimensions (0.4 mm land width, 0.6 mm pitch).

Key Features

Applications

Equivalent & Alternatives

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

Compared with PDTC115EMB, PDTA115EMB offers native high-side sourcing capability and simpler interface to positive-rail loads; compared with PDTA123EMB, it trades speed for lower drive burden and tighter VI(on)/VI(off) window for robust noise immunity.

Availability

PDTA115EMB is available at Aetrix Electronics and suitable for automotive interior lighting control, portable device power sequencing, and industrial I/O signal conditioning requiring stable component supply and long-term lifecycle assurance.

Supply support for PDTA115EMB 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 leader in high-volume discrete, logic, and PowerMOS semiconductors, spun off from NXP in 2017 and focused on automotive, industrial, computing, and consumer markets.

This part belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered to replace discrete transistor-resistor combinations in digital switching applications while minimizing PCB area and assembly cost.

FAQ

What is the maximum continuous junction temperature for PDTA115EMB?

The absolute maximum junction temperature (Tj) is 150 °C, as specified in Table 5 of the datasheet. Operation above this limit risks permanent degradation of the silicon die and built-in resistors. Derating begins at Tamb > 25 °C, with total power dissipation reduced linearly to zero at 150 °C ambient per the derating curve in Figure 2.

Can PDTA115EMB be used in 5 V logic systems without additional components?

Yes - its VI(on) ≤ -1.6 V and VI(off) ≥ -1.2 V at 25 °C allow direct interface with standard 5 V TTL/CMOS outputs. When driven by a 5 V MCU GPIO, the internal R1 resistor limits base current to ~40 µA, ensuring reliable saturation while avoiding overdrive or excessive power consumption.

How does the R2/R1 ratio affect switching behavior?

The R2/R1 ratio of 0.8–1.2 determines the internal feedback fraction that stabilizes the base-emitter voltage during conduction. A ratio near unity ensures symmetric turn-on/turn-off thresholds and minimizes hysteresis, improving noise margin in noisy industrial environments where signal integrity is critical.

Is thermal relief required for the exposed pad in DFN1006B-3?

No - the DFN1006B-3 package has no thermal pad; all three terminals (pins 1–3) are solder lands only. Thermal performance relies on copper area connected to pin 2 (emitter/GND), with Rth(j-a) = 500 K/W measured on FR4 with standard footprint per Table 6. Increasing GND copper area improves dissipation but does not require dedicated thermal vias.