onsemi MPS650G

Overview

MPS650G from onsemi is an NPN general-purpose amplifier transistor in TO-92 package, rated for 40 V_CEO, 2.0 A continuous collector current, and 625 mW power dissipation at T_A = 25°C. It delivers h_FE ≥ 75 at I_C = 50 mA and V_CE = 2.0 V, with V_CE(sat) ≤ 0.5 V at I_C = 2.0 A / I_B = 200 mA - used in low-voltage switching and linear amplification stages of power supplies and motor drivers.

For engineers reviewing the MPS650G datasheet, pinout, applications, or equivalent options, key selection criteria include its 40 V breakdown rating, TO-92 thermal resistance (200 °C/W junction-to-ambient), DC gain stability across −55 to +150 °C, and Pb-free compliance per J-STD-609.

Technical Context

The MPS650G operates as a silicon NPN bipolar junction transistor optimized for medium-current linear amplification and saturated switching. Its design supports base-driven operation with V_BE(on) ≤ 1.0 V at I_C = 1.0 A and V_CE = 2.0 V, and V_BE(sat) ≤ 1.2 V under forced β = 10 conditions.

It features f_T = 75 MHz at I_C = 50 mA, V_CE = 5.0 V, enabling use in audio-frequency amplifiers and low-speed digital switching. Safe Operating Area (SOA) curves confirm wire-bond and thermal limits up to 2.0 A/40 V in DC mode at T_C = 25°C.

Key Specifications

Pinout & Package

Package: TO-92 (Case 29-11), Pb-free, straight or bent lead options. Dimensions per ANSI Y14.5M: body height 4.45–5.20 mm, lead pitch 2.54 mm, max width 4.32–5.33 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN amplifier transistor applications.

Compared with BC337-40 and 2N2222A, the MPS650G provides 2.5× higher continuous current rating and 25% greater power dissipation, making it uniquely suited for thermally constrained 1–2 A switching nodes where TO-92 remains the preferred package.

Availability

MPS650G is available at Aetrix Electronics and suitable for DC power supply regulation, relay/solenoid driving, audio signal amplification, and motor speed control requiring stable component supply and Pb-free compliance.

Supply support for MPS650G 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, delivering discrete, analog, logic, and custom devices for automotive, industrial, cloud, and IoT applications.

The MPS650G belongs to onsemi's general-purpose bipolar transistor product line, designed for cost-sensitive, medium-current amplification and switching in consumer, industrial, and automotive subsystems where reliability and thermal robustness are essential.

FAQ

What is the maximum collector-emitter voltage rating for MPS650G?

The MPS650G has a maximum collector-emitter voltage (V_CEO) rating of 40 Vdc under open-base conditions with I_C = 10 mA. This rating defines the absolute upper limit for voltage applied between collector and emitter terminals before breakdown occurs, and must not be exceeded even transiently in circuit design.

Does MPS650G support operation at elevated temperatures?

Yes, the MPS650G is rated for junction and storage temperatures from −55°C to +150°C. Its DC current gain (h_FE) remains stable across this range, as confirmed by Figure 1 in the official datasheet, making MPS650G suitable for under-hood automotive modules and industrial controls exposed to thermal cycling.

What is the typical DC current gain (h_FE) of MPS650G at 1 A collector current?

At I_C = 1.0 A, V_CE = 2.0 V, and T_J = 25°C, the MPS650G exhibits h_FE ≥ 75 per the datasheet's "ON CHARACTERISTICS" table. This minimum guaranteed gain ensures predictable base drive requirements in high-current saturated switching applications using MPS650G.

Can MPS650G be used in audio amplifier circuits?

Yes, the MPS650G is suitable for audio amplifier circuits due to its 75 MHz transition frequency (f_T) and stable h_FE across the 20 Hz–20 kHz band. When biased at I_C = 50 mA in common-emitter configuration, MPS650G delivers low distortion and adequate bandwidth for preamplifier and driver stages in portable audio equipment.

Is MPS650G Pb-free and RoHS compliant?

Yes, MPS650G is Pb-free and RoHS compliant, as explicitly stated in the ordering information and marking diagram sections of the official onsemi datasheet (Publication Order Number: MPS650/D). The "G" suffix denotes Pb-free packaging per J-STD-609, and the device meets EU Directive 2011/65/EU requirements.