NXP Semiconductors PDTA144WE,115

Overview

PDTA144WE from Nexperia is a PNP resistor-equipped transistor with integrated bias resistors R1 = 47 kΩ and R2 = 22 kΩ, designed for general-purpose switching in low-power digital interface circuits. It features V_CEO = −50 V, I_O = −100 mA, and SOT416 (SC-75) surface-mount package, enabling compact load switching in portable logic-level translators.

For engineers reviewing the PDTA144WE datasheet, PDTA144WE pinout, PDTA144WE application, or PDTA144WE equivalent, key selection criteria include its built-in resistor ratio (R2/R1 ≈ 0.47), guaranteed V_i(off) (−1.7 to −1.2 V), and thermal resistance of 830 K/W in SOT416 - critical for thermally constrained PCB layouts.

Technical Context

This device integrates two precision thin-film resistors directly into a PNP bipolar die to eliminate external base bias components. Its input-off voltage (V_i(off)) and input-on voltage (V_i(on)) are specified at defined current thresholds (I_C = −100 μA and −2 mA), ensuring predictable logic-level compatibility with 3.3 V and 5 V CMOS outputs.

The SOT416 package imposes strict thermal limits: P_tot = 150 mW at T_amb ≤ 25 °C and R_th(j-a) = 830 K/W, requiring careful copper pour design. Device operation is validated across −65 °C to +150 °C ambient, with junction temperature limited to 150 °C.

Key Specifications

Pinout & Package

SOT416 (SC-75) is a plastic surface-mounted package with 3 leads, body dimensions 1.6 × 0.8 × 0.55 mm, optimized for high-density routing and reflow-only assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PDTC144WE and EMZ7T2R, PDTA144WE offers the best balance of proven thermal performance in SOT416, documented V_i(off)/V_i(on) windows, and long-term supply stability - making it preferred for industrial control I/O modules where reliability outweighs ultra-miniaturization.

Availability

PDTA144WE is available at Aetrix Electronics and suitable for LED driver circuits, microcontroller GPIO expansion, power rail sequencing, and push-pull output stages requiring stable component supply and consistent parametric performance across production batches.

Supply support for PDTA144WE 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 discrete, logic, and PowerMOS semiconductors, formed in 2017 from the former NXP Standard Products division, with focus on automotive, industrial, computing, and consumer markets.

The PDTA144W series belongs to Nexperia's Resistor-Equipped Transistor (RET) product line, engineered specifically to replace discrete transistor + dual-resistor configurations in cost-sensitive, space-constrained digital interface and switching applications.

FAQ

What is the pin configuration of PDTA144WE in the SOT416 package?

Pin 1 is Base, Pin 2 is Emitter, and Pin 3 is Collector - confirmed in the "Simplified outline, symbol and pinning" section of the official Nexperia datasheet. This configuration supports high-side switching where the emitter connects to V_CC and the collector drives the load to ground. The PDTA144WE pinout eliminates ambiguity in PCB layout and ensures correct orientation during automated placement.

Does PDTA144WE require external bias resistors?

No, PDTA144WE integrates R1 = 47 kΩ and R2 = 22 kΩ internally, forming a complete base bias network. This eliminates the need for external resistors in standard switching applications, reducing bill-of-materials count and PCB area. The internal resistor ratio (R2/R1 ≈ 0.47) is laser-trimmed during manufacturing, ensuring consistent DC operating points across the PDTA144WE production lot.

What is the maximum continuous collector current for PDTA144WE?

The maximum continuous DC output current (I_O) for PDTA144WE is −100 mA at T_amb ≤ 25 °C, as specified in the Quick Reference Data table. Derating applies above 25 °C ambient - for example, at 60 °C, usable current drops to approximately −65 mA due to thermal limits imposed by the SOT416 package's R_th(j-a) = 830 K/W. This value is measured under standardized test conditions and applies directly to PDTA144WE without additional qualification.

Can PDTA144WE be used in 1.8 V logic interface applications?

Yes, PDTA144WE supports 1.8 V logic interfaces via its V_i(on) specification of −2.7 V (typical) at I_C = −2 mA and V_CE = −0.3 V. When referenced to a 3.3 V or 5 V rail, a 1.8 V logic high presents −1.5 V or −3.2 V at the base, falling within the guaranteed turn-on window. This behavior is explicitly characterized in the datasheet's "Characteristics" table and applies to the exact PDTA144WE variant.

Is PDTA144WE RoHS compliant and halogen-free?

Yes, PDTA144WE complies with RoHS Directive 2011/65/EU and is halogen-free per Nexperia's material declarations. The device uses lead-free matte tin termination and green molding compound, meeting JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) requirements. Compliance documentation, including IMDS and IPC-1752 reports, is available for PDTA144WE through Nexperia's official product portal.