Nexperia USA Inc. PDTA143ZQBZ

Overview

PDTA143ZQB from Nexperia is a 50 V, 100 mA PNP resistor-equipped transistor (RET) in a DFN1110D-3 (SOT8015) leadless SMD package with side-wettable flanks. It integrates base-emitter and base-collector bias resistors (R1 = 4.7 kΩ, R2 = 47 kΩ), delivers V_CEO = −50 V and I_O = −100 mA, and serves as a compact, AOI-compatible digital switch for IC input control and low-power load switching.

For engineers reviewing the PDTA143ZQB datasheet, PDTA143ZQB pinout, PDTA143ZQB application, or PDTA143ZQB equivalent, this device is selected for space-constrained digital logic interfacing where built-in biasing eliminates external resistors, reduces BOM count, and supports automated optical inspection of solder joints on ultra-thin PCBs.

Technical Context

This PNP RET uses an integrated silicon transistor with two monolithically embedded thin-film resistors: R1 (4.7 kΩ) connects base to input, and R2 (47 kΩ) connects base to emitter, enabling single-resistor drive and stable saturation at I_C = −5 mA with I_B = −0.25 mA. Its −100 mV V_CE(sat) ensures minimal conduction loss in low-voltage switching.

The DFN1110D-3 package features side-wettable flanks for reliable reflow solder joint inspection, 0.48 mm height, and 1.1 × 1.0 mm footprint - optimized for high-density layouts and automated assembly. Thermal resistance R_th(j-a) is 298 K/W on 70 µm FR4 PCB, supporting continuous operation up to T_j = 150 °C.

Key Specifications

Pinout & Package

DFN1110D-3 (SOT8015) is a 3-terminal, leadless, ultra-thin plastic package with side-wettable flanks for optical solder inspection. Dimensions: 1.1 mm × 1.0 mm × 0.48 mm body height; 0.65 mm pin pitch; 0.22 mm max flange thickness.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PDTC143ZQB, PDTA143ZQB offers native low-side sink capability and logic-compatible turn-on; versus BC857B, it trades gain flexibility for BOM reduction, AOI support, and guaranteed bias matching - critical for high-volume, miniaturized digital interfaces.

Availability

PDTA143ZQB is available at Aetrix Electronics and suitable for LED indicator control, microcontroller input conditioning, and low-power load switching requiring stable component supply, tight Z-height constraints, and AOI-compatible assembly.

Supply support for PDTA143ZQB 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 high-volume, high-reliability essential semiconductors for automotive, industrial, and consumer markets.

PDTA143ZQB belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered specifically for digital interface simplification - reducing passive count, improving assembly yield, and enabling miniaturization in space- and cost-sensitive applications.

FAQ

What is the maximum operating temperature for PDTA143ZQB?

The PDTA143ZQB has a maximum junction temperature (T_j) of 150 °C and operates across an ambient temperature range of −55 °C to +150 °C. Derated power dissipation begins above 25 °C ambient, reaching 340 mW at 25 °C on 35 µm FR4 and 420 mW on 70 µm FR4, per datasheet Figure 1.

Can PDTA143ZQB replace a standard PNP BJT like BC857 in existing designs?

Yes, PDTA143ZQB can replace BC857 in digital switching roles, but requires schematic adjustment: remove external base resistor, tie the original base drive node to Pin 1 (input), and connect load to Pin 3 (collector). Its fixed R1/R2 ratio and lower V_CEO (−50 V vs. −45 V) provide tighter bias control but less overvoltage headroom.

Is the DFN1110D-3 package compatible with standard reflow profiles?

Yes - the DFN1110D-3 package is qualified for lead-free reflow per J-STD-020. Recommended stencil thickness is 0.1 mm; solder paste volume targets 0.34 mm² per pad. Footprint dimensions (1.0 mm pad length, 0.65 mm pitch) match IPC-7351B density level 'N', and side-wettable flanks support post-reflow AOI verification without X-ray.

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

The internal transistor's transition frequency is 180 MHz at V_CE = −5 V, I_C = −10 mA, and f = 100 MHz (datasheet Figure 34). This supports fast digital switching (<50 ns rise/fall times) but the integrated resistors limit small-signal AC performance - the device is optimized for DC/switching, not RF amplification.