Nexperia USA Inc. PBLS2003D,115

Overview

PBLS2003D,115 from Nexperia is a dual-function SOT457 (SC-74) monolithic load switch integrating a PNP low-V_CEsat BISS transistor (TR1) and an NPN resistor-equipped transistor (TR2). It delivers −1 A DC collector current with 185–280 mΩ R_CEsat, supports 50 V V_CEO on TR2, and features integrated bias resistors (R1 = 7–13 kΩ, R2/R1 = 0.8–1.2). It is used in high-side LED and backlight switching for portable equipment.

For engineers reviewing the PBLS2003D,115 datasheet, PBLS2003D,115 pinout, PBLS2003D,115 application, or PBLS2003D,115 equivalent, key selection criteria include verified dual-transistor integration, confirmed 20 V PNP/50 V NPN blocking capability, measured R_CEsat ≤280 mΩ at −1 A, validated 100 mA TR2 output drive, and SOT457 thermal performance under FR4 PCB mounting conditions.

Technical Context

The device implements two independent silicon elements in one die: TR1 is a PNP BISS transistor optimized for low-saturation operation with V_CEsat as low as −185 mV at −1 A/−100 mA drive, while TR2 is an NPN RET with built-in R1 and R2 resistors enabling direct logic-level input control without external biasing. Both share thermally coupled junctions but operate with separate electrical paths and absolute maximum ratings.

TR1's low threshold (V_BEon ≤ −0.85 V at −1 A) reduces drive power versus MOSFET alternatives, and TR2's VI(on) = 1.8–2.5 V and VI(off) = 0.8–1.1 V ensure robust TTL/CMOS compatibility. The 6-pin SOT457 layout isolates emitter (TR1), base (TR1), collector (TR1), GND (TR2), input (TR2), and output (TR2) to prevent cross-conduction in load-switch configurations.

Key Specifications

Pinout & Package

Package: SOT457 (SC-74), 6-lead surface-mount plastic package with 0.95 mm pitch, 3.0 × 1.7 mm footprint, and standard FR4-compatible solder land pattern (IEC 60127-1 compliant).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-transistor load switch applications.

Compared with NSBC114YDXV6T1G and DMN3025LSD-13, PBLS2003D,115 uniquely combines high-side PNP switching with logic-level NPN control in one package-enabling compact, low-dropout, self-biased load management without external components or level shifters.

Availability

PBLS2003D,115 is available at Aetrix Electronics and suitable for portable equipment power sequencing, LED backlight switching, and battery charger enable path applications requiring stable component supply and long-term industrial availability.

Supply support for PBLS2003D,115 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 business, with focus on automotive, industrial, computing, consumer, and wearable markets.

PBLS2003D,115 belongs to Nexperia's BISS + RET dual-transistor load switch product line, designed specifically to reduce component count and PCB area in portable and battery-powered systems requiring high-side switching with logic-compatible control.

FAQ

What is the maximum continuous current rating for the PNP BISS transistor (TR1) in PBLS2003D,115?

The TR1 PNP BISS transistor is rated for −1 A DC collector current at T_amb ≤25 °C with appropriate PCB thermal relief. At elevated ambient temperatures or reduced copper area, derating applies per Figure 1: e.g., 600 mW max power at 25 °C drops to ~200 mW at 100 °C ambient on standard FR4.

Can PBLS2003D,115 be used as a standalone high-side switch without external components?

Yes - TR1 operates as a fully functional high-side PNP switch with base drive applied to Pin 2. TR2 is electrically isolated and may remain unconnected. For logic-controlled operation, TR2's input (Pin 5) accepts 1.8–2.5 V to enable TR1 via internal bias network; no external resistors needed.

What is the thermal resistance from junction to ambient (R_th(j-a)) under standard FR4 mounting?

When mounted on an FR4 PCB with single-sided copper, tin-plated, and standard footprint, R_th(j-a) = 315 K/W. With a 1 cm² collector pad, it improves to 236 K/W; on ceramic Al₂O₃, it reaches 210 K/W - enabling up to 400 mW total dissipation in optimized layouts.

How does the R2/R1 bias resistor ratio affect TR2 switching behavior?

The R2/R1 ratio (0.8–1.2) sets the internal current gain of TR2, directly influencing its saturation depth and output impedance. A ratio near 1.0 ensures consistent V_CEsat ≤150 mV at 10 mA load, while tighter tolerance minimizes unit-to-unit variation in logic threshold and drive strength.