NXP Semiconductors PBLS4001D,115

Overview

PBLS4001D,115 from NXP Semiconductors is a dual-function SOT457-packaged discrete device integrating a 40 V PNP low-V_CEsat Breakthrough In Small Signal (BISS) transistor and a 50 V NPN resistor-equipped transistor (RET). It delivers R_CEsat = 240–340 mΩ at I_C = −500 mA, supports 100 mA output current on the RET side, and features integrated bias resistors (R₁ = 1.54–2.86 kΩ, R₂/R₁ = 0.8–1.2), enabling compact high-side load switching in portable power rails.

For engineers reviewing the PBLS4001D,115 datasheet, PBLS4001D,115 pinout, PBLS4001D,115 application, or PBLS4001D,115 equivalent, this part serves as an integrated load switch solution with verified low-threshold drive (<1 V), space-saving SC-74 packaging, and dual-transistor functionality for supply-line and LED backlight control - critical for battery-powered system design and BOM optimization.

Technical Context

The PBLS4001D integrates two functionally independent transistors: TR1 is a PNP BISS device optimized for low-saturation operation (V_CEsat = −120 to −170 mV @ I_C = −500 mA, I_B = −50 mA), while TR2 is an NPN RET with built-in input bias network (R₁, R₂) enabling direct logic-level drive without external resistors. Both share thermal coupling within a single SOT457 package but operate with separate electrical domains.

TR1 supports high-side switching up to −40 V V_CEO and −1 A I_C, with h_FE = 215–800 across 100 mA–1 A; TR2 provides 50 V V_CEO, 100 mA I_O, and VI(on)/VI(off) thresholds of 1.6–2.0 V / 0.5–1.2 V, making it suitable for digital signal conditioning and level-shifted driver stages.

Key Specifications

Pinout & Package

SOT457 (SC-74) 6-pin surface-mount plastic package with standard footprint (3.0 × 1.7 mm body, 0.95 mm height); thermally enhanced for ceramic (Al₂O₃) or FR4 PCBs with optional 1 cm² collector pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSBC114EDXV6T1G and DMN3025LSD-13, PBLS4001D,115 uniquely combines high-side PNP BISS and low-side NPN RET in one package - delivering BOM reduction, guaranteed bias matching, and coordinated thermal behavior unattainable with discrete or single-function alternatives.

Availability

PBLS4001D,115 is available at Aetrix Electronics and suitable for supply line switching, battery charger control, and LED backlight management requiring stable component supply, consistent parametric performance, and long-term industrial availability.

Supply support for PBLS4001D,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

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer applications.

PBLS4001D belongs to NXP's BISS+RET integrated discrete product line, designed specifically to reduce component count and improve reliability in portable power management and signal switching applications.

FAQ

What is the maximum continuous collector current for the PNP BISS transistor (TR1) in PBLS4001D,115?

The maximum continuous collector current for TR1 is −1 A under ceramic PCB (Al₂O₃) mounting conditions, as specified in Table 1 and confirmed in Table 5 limiting values. Derating applies above 25 °C ambient: at 100 °C, max I_C drops to −0.7 A per FR4 PCB limits. Pulse operation supports −2 A for ≤1 ms.

Can PBLS4001D,115 be used with 1.8 V GPIO control signals?

Yes - the NPN RET stage (TR2) has VI(on) = 1.6–2.0 V and VI(off) = 0.5–1.2 V, enabling reliable turn-on from 1.8 V microcontroller outputs without external level shifting. The PNP BISS (TR1) is controlled separately via its base (pin 2), which must be pulled low relative to its emitter (pin 1) to activate.

How does the integrated R₁/R₂ network affect design flexibility?

The internal R₁ (1.54–2.86 kΩ) and R₂/R₁ ratio (0.8–1.2) fix the base current and saturation margin for TR2, eliminating external resistor selection but constraining drive compatibility to logic levels within 1.2–2.0 V. This ensures consistent switching behavior across temperature and process variation without layout-dependent tuning.

Is thermal derating required when using PBLS4001D,115 on standard FR4 PCBs?

Yes - on standard FR4 (single-sided copper, tin-plated), P_tot is limited to 250 mW at T_amb = 25 °C (Table 5), requiring linear derating above that temperature. With a 1 cm² collector pad, P_tot rises to 350 mW; ceramic Al₂O₃ allows 400 mW. Thermal resistance ranges from 210–312 K/W depending on PCB construction.