onsemi MPS6601RLRA

Overview

MPS6601RLRA from onsemi is an NPN general-purpose amplifier transistor in TO-92 package, rated for 25 V_CEO, 1 A continuous collector current, and 625 mW power dissipation at T_A = 25°C. It delivers h_FE ≥ 50 at I_C = 100 mA, V_CE = 1.0 V, and supports switching applications with t_d/t_r/t_f ≤ 25/30/50 ns - used in low-voltage DC-DC converter bias circuits and signal amplification stages.

For engineers reviewing the MPS6601RLRA datasheet, pinout, applications, or equivalent options, key selection criteria include V_CEO rating, h_FE consistency across I_C range, thermal resistance (R_JA = 200°C/W), and TO-92 lead-form compatibility with manual or automated through-hole assembly.

Technical Context

The MPS6601RLRA operates as a silicon planar epitaxial NPN bipolar junction transistor optimized for linear amplification and medium-speed switching. Its design targets stable DC current gain (h_FE) from 10 mA to 1 A, with V_CE(sat) ≤ 0.6 V at I_C/I_B = 10 and f_T = 100 MHz under specified test conditions.

Thermal performance is defined by R_JA = 200°C/W (PCB-mounted) and R_JC = 83.3°C/W, supporting operation from −55°C to +150°C junction temperature. The device exhibits C_obo ≤ 30 pF at V_CB = 10 V and demonstrates noise figure < 8 dB at R_S = 1 kΩ, f = 1 kHz.

Key Specifications

Pinout & Package

Package: TO-92 (Case 29-11, Style 1), epoxy-molded plastic with 3 leads, lead spacing 2.54 mm, body height ≤ 5.20 mm. Designed for through-hole mounting and hand-soldering or wave soldering per IPC-J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPS6601RLRA, BC337-40 offers higher voltage margin and broader h_FE range but less consistent gain at high current, while MPSA06 provides superior V_CEO headroom and guaranteed h_FE at the cost of slightly higher V_CE(sat).

Availability

MPS6601RLRA is available at Aetrix Electronics and suitable for industrial sensor interfaces, LED driver switches, and DC-DC converter bias circuits requiring stable component supply and RoHS-compliant through-hole transistors.

Supply support for MPS6601RLRA 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The MPS6601RLRA belongs to onsemi's legacy general-purpose bipolar transistor product line, engineered for reliability in cost-sensitive linear amplification and medium-speed switching roles across consumer and industrial electronics.

FAQ

What is the maximum collector-emitter voltage rating for MPS6601RLRA?

The MPS6601RLRA has a maximum collector-emitter voltage (V_CEO) rating of 25 Vdc. This value is measured with I_C = 1.0 mA and I_B = 0, and must not be exceeded to avoid breakdown. Operation near this limit requires careful attention to transient spikes and thermal derating - the MPS6601RLRA is not rated for 40 V applications like the MPS6602 variant.

Does MPS6601RLRA support 1 A continuous collector current in real-world PCB layouts?

Yes, the MPS6601RLRA is rated for 1000 mA continuous collector current at T_A = 25°C, but actual achievable current depends on PCB copper area, airflow, and ambient temperature. At 70°C ambient, derating reduces usable I_C to approximately 600 mA due to its 5.0 mW/°C thermal derating slope - proper layout with thermal relief pads is essential to sustain full-rated current.

Is MPS6601RLRA pin-compatible with other TO-92 NPN transistors like BC547 or 2N2222?

Yes, the MPS6601RLRA uses standard TO-92 (Case 29-11) pinout: Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector - matching BC547, 2N2222, and most industry-standard TO-92 NPN transistors. However, electrical parameters differ: V_CEO = 25 V (vs. 45 V for BC547), and h_FE min = 50 (vs. 110–800 for BC547), so functional substitution requires validation in the target circuit.

What is the typical transition frequency (f_T) of MPS6601RLRA and how does it affect high-frequency use?

The MPS6601RLRA has a minimum transition frequency (f_T) of 100 MHz, measured at I_C = 50 mA, V_CE = 10 V, and f = 100 MHz. This enables effective small-signal amplification up to ~30 MHz and fast switching with rise/fall times ≤ 30/50 ns - making it suitable for audio preamps and PWM-driven loads, but not for RF power stages above 50 MHz where gain drops significantly.

How does the thermal resistance specification impact heatsink requirements for MPS6601RLRA?

The MPS6601RLRA has R_JA = 200°C/W (junction-to-ambient) when mounted on a standard PCB, meaning each watt of dissipated power raises junction temperature by 200°C above ambient. With its 625 mW P_D rating, even at 25°C ambient, junction temperature reaches 156°C - close to the 150°C max. Thus, heatsinking is recommended above ~300 mW; using R_JC = 83.3°C/W, a small clip-on heatsink can extend safe continuous operation.