NXP Semiconductors MPSA06,412

Overview

MPSA06,412 from Nexperia (formerly Philips Semiconductors) is an NPN general-purpose bipolar junction transistor in a TO-92 (SOT54/SC-43A) through-hole package, rated for 80 V V_CEO, 500 mA I_C, and 625 mW P_tot, commonly used in low-voltage switching and small-signal amplification circuits in consumer electronics and industrial controls.

For engineers reviewing the MPSA06,412 datasheet, MPSA06,412 pinout, MPSA06,412 application, or MPSA06,412 equivalent, key selection considerations include its DC current gain (h_FE ≥100 at I_C = 10–100 mA), low saturation voltage (V_CEsat ≤ 250 mV), transition frequency (f_T ≥ 100 MHz), thermal resistance (R_th(j-a) = 200 K/W), and complementary PNP pairing with MPSA56.

Technical Context

The MPSA06,412 operates as a standard NPN BJT with fixed emitter-base and collector-base junctions optimized for linear amplification and saturated switching. Its h_FE remains stable across I_C = 10–100 mA at V_CE = 1 V, supporting predictable biasing in Class-A amplifiers and digital logic interfaces.

It features low leakage (I_CBO, I_EBO ≤ 50 nA), robust absolute maximum ratings (T_j ≤ 150 °C, T_stg = −65 to +150 °C), and is qualified for production use per IEC 60134 limiting values, mounted on FR4 PCBs without heatsinking.

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, body height ~4.8 mm, and JEDEC-standard outline.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BC547B and PN2222A, the MPSA06,412 uniquely balances 80 V voltage headroom, 500 mA current capacity, and stable h_FE ≥100 - making it optimal for industrial control interfaces requiring reliability across 24–48 V rails without redesigning bias networks.

Availability

MPSA06,412 is available at Aetrix Electronics and suitable for relay driver circuits, LED current switches, audio pre-amplifier stages, and logic-level translators requiring stable component supply and long-term obsolescence management.

Supply support for MPSA06,412 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, formerly Philips Semiconductors, is a global leader in discrete and logic ICs, specializing in high-volume, high-reliability components for automotive, industrial, and consumer applications.

The MPSA06,412 belongs to Nexperia's legacy general-purpose transistor family designed for cost-sensitive, high-yield applications demanding proven performance, wide temperature operation, and compatibility with manual and automated through-hole assembly.

FAQ

What is the maximum continuous collector current rating for MPSA06,412?

The MPSA06,412 has a maximum DC collector current (I_C) of 500 mA under normal operating conditions. This rating assumes ambient temperature ≤25 °C and proper PCB thermal management per the datasheet's FR4 mounting condition. At higher temperatures or with reduced copper area, derating is required-e.g., ~400 mA at 50 °C ambient. The MPSA06,412 also supports 1 A peak collector current (I_CM) for short-duration pulses.

Is MPSA06,412 pin-compatible with other TO-92 NPN transistors like BC547 or 2N3904?

No, MPSA06,412 is not pin-compatible with BC547 or 2N3904. While all three use TO-92 packages, their pinouts differ: MPSA06,412 follows E-C-B (Emitter–Collector–Base) order when viewed with flat side facing outward and leads down, whereas BC547 uses E-B-C and 2N3904 uses E-B-C. Using them interchangeably without verifying pin alignment risks circuit malfunction or damage. Always confirm pinout from the official MPSA06,412 datasheet before layout or replacement.

What is the typical DC current gain (h_FE) of MPSA06,412 at 100 mA collector current?

The MPSA06,412 guarantees h_FE ≥100 at both I_C = 10 mA and I_C = 100 mA, with V_CE = 1 V and T_amb = 25 °C. Unlike many general-purpose transistors whose gain drops significantly at higher currents, the MPSA06,412 maintains this minimum across its rated DC current range-enabling consistent biasing in switching and amplification stages without gain-dependent recalculations. This behavior is confirmed in the "CHARACTERISTICS" section of the Philips/Nexperia datasheet.

Can MPSA06,412 be used in place of MPSA56 in a circuit?

No-MPSA06,412 is an NPN transistor, while MPSA56 is its PNP complement; they are not interchangeable. Swapping them would reverse current flow direction and likely prevent circuit operation or cause damage. However, MPSA06,412 and MPSA56 are intentionally paired for complementary applications such as push-pull amplifiers or H-bridge drivers. Always verify polarity, pinout, and biasing requirements before substitution. The MPSA06,412 datasheet explicitly lists MPSA56 as its PNP counterpart.

Does MPSA06,412 meet RoHS and REACH compliance standards?

Yes, the MPSA06,412 manufactured by Nexperia meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006 requirements. As a legacy product requalified under Nexperia's modern environmental compliance program, it carries lead-free terminations and halogen-free molding compound. Compliance documentation-including test reports and declarations-is available upon request from Aetrix Electronics for qualifying customers and auditable supply chains.