NXP Semiconductors MPSA56,116

Overview

MPSA56,116 from NXP Semiconductors is a PNP general-purpose bipolar junction transistor in TO-92 (SOT54) package, rated for −80 V V_CEO, −500 mA I_C, and 625 mW P_tot, commonly used in low-power switching and linear amplification circuits such as signal inversion stages in discrete logic interfaces and sensor biasing networks.

For engineers reviewing the MPSA56,116 datasheet, MPSA56,116 pinout, MPSA56,116 application, or MPSA56,116 equivalent, key selection considerations include its PNP polarity, −80 V breakdown rating, −100 mA h_FE minimum at −10 mA, −250 mV V_CEsat at −100 mA/−10 mA drive, and thermal resistance of 200 K/W on FR4 PCB.

Technical Context

The MPSA56,116 operates as a medium-voltage, medium-current PNP BJT with DC current gain (h_FE) specified from 100 to ∞ at −10 mA and −100 mA collector currents, supporting both active-mode amplification and saturated-switching operation. Its −5 V V_EB0 limit and −50 nA I_EBO ensure stable cutoff behavior under reverse-biased base-emitter conditions.

Designed for through-hole mounting on FR4 boards, it exhibits 200 K/W junction-to-ambient thermal resistance and a maximum junction temperature of 150 °C, with absolute maximum ratings defined per IEC 60134 including −1 A I_CM peak collector current and −200 mA I_BM peak base current.

Key Specifications

Pinout & Package

Package: TO-92 (SOT54 / SC-43A), plastic single-ended leaded through-hole package with 3 leads, 2.54 mm lead pitch, 5.2 mm body height, and 4.8 mm body width.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP general-purpose transistor applications.

Compared with BC557B,116 and PN2907A,116, the MPSA56,116 offers the highest V_CEO rating among TO-92 PNP transistors in this class, making it uniquely suitable for 48 V industrial control inputs and legacy telecom line interface designs where voltage margin is critical.

Availability

MPSA56,116 is available at Aetrix Electronics and suitable for industrial control panels, legacy equipment repair, and sensor interface modules requiring stable component supply across long-lifecycle programs.

Supply support for MPSA56,116 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 IoT applications.

The MPSA56,116 belongs to NXP's legacy discrete transistor product line, designed specifically for cost-sensitive, reliability-critical through-hole applications in industrial automation, test equipment, and analog signal conditioning circuits.

FAQ

What is the maximum collector-emitter voltage rating for MPSA56,116?

The MPSA56,116 has a maximum collector-emitter voltage (V_CEO) rating of −80 V under open-base conditions. This rating is defined per IEC 60134 Absolute Maximum Ratings and applies at T_amb ≤ 25 °C. Exceeding this voltage risks permanent breakdown, especially during transient events or inductive load switching.

Is MPSA56,116 pin-compatible with its NPN complement MPSA06?

Yes, the MPSA56,116 and MPSA06 share identical TO-92 (SOT54) packaging and pinout: Pin 1 = Collector, Pin 2 = Base, Pin 3 = Emitter. However, polarity reversal means circuit layout must account for PNP vs. NPN current flow direction-direct substitution without schematic modification will not function correctly.

What is the typical DC current gain (h_FE) of MPSA56,116 at 100 mA collector current?

At V_CE = −1 V and I_C = −100 mA, the MPSA56,116 guarantees h_FE ≥100. The datasheet does not specify an upper bound, and measured values typically range from 100 to 250 in production units under these conditions, supporting robust base drive design for switching applications.

Can MPSA56,116 be used in surface-mount assemblies?

No-MPSA56,116 is only offered in the through-hole TO-92 (SOT54) package. It lacks surface-mount variants such as SOT-23 or SC-70. For SMT compatibility, consider alternatives like the PNP MMBT5551 or DXT5551, which differ in voltage rating, gain, and footprint.

What is the thermal resistance junction-to-ambient for MPSA56,116 on FR4 PCB?

The MPSA56,116 has a thermal resistance R_th(j-a) of 200 K/W when mounted on a standard FR4 printed-circuit board per note 1 in the datasheet. This value assumes no copper pour or heatsinking; adding 1 cm² of 2-oz copper on the collector pad can reduce R_th(j-a) by ~30%, improving safe operating area at elevated ambient temperatures.