onsemi MPSA13RLRP

Overview

MPSA13RLRP from onsemi is an NPN silicon Darlington transistor in TO-92 package, rated for 30 V_CE, 500 mA continuous collector current, and 625 mW power dissipation at T_A = 25°C, designed for low-speed switching and medium-gain amplification in signal conditioning and interface circuits.

For engineers reviewing the MPSA13RLRP datasheet, pinout, applications, or equivalent options, key selection criteria include its minimum h_FE of 5000 at I_C = 10 mA, V_CE(sat) ≤ 1.5 V at I_C/I_B = 1000, and thermal resistance R_JA = 200°C/mW - critical for discrete gain-stage and relay-driver designs requiring high DC current gain with minimal base drive.

Technical Context

The MPSA13RLRP implements a monolithic NPN-NPN Darlington pair with integrated base-emitter shunt resistor (not present), delivering high current gain without external bias network complexity. Its f_T = 125 MHz enables stable operation up to audio frequencies while maintaining robust saturation behavior under I_C ≤ 100 mA.

Designed for linear and switching operation in ambient temperatures from −55°C to +150°C, it features V_(BR)CES = 30 V, V_EBO = 10 V, and low leakage (I_CBO, I_EBO ≤ 100 nA), supporting reliable performance in industrial control inputs and sensor interface front-ends where leakage-sensitive biasing is required.

Key Specifications

Pinout & Package

Package: TO-92 (Case 29-11, Style 1), epoxy molded, through-hole compatible, with standardized lead spacing (2.54 mm pitch) and mechanical dimensions per ON Semiconductor drawing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPSA13RLRP, MPSA14RLRP delivers double the minimum DC gain with identical packaging and thermal specs, while ULN2003A trades discrete flexibility for integration and protection - making MPSA13RLRP the preferred choice for single-channel, cost-sensitive, or linear-biased designs.

Availability

MPSA13RLRP is available at Aetrix Electronics and suitable for relay drivers, sensor interfaces, industrial input isolation, and DC motor control requiring stable component supply across long-lifecycle embedded programs.

Supply support for MPSA13RLRP 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 specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.

The MPSA13RLRP belongs to onsemi's legacy bipolar transistor product line, engineered for reliability-critical discrete switching and amplification in industrial control, appliance, and instrumentation applications where proven performance and long-term availability are essential.

FAQ

What is the maximum collector current rating for MPSA13RLRP?

The MPSA13RLRP is rated for 500 mAdc continuous collector current at T_A = 25°C. Derating applies above 25°C at 5.0 mW/°C for ambient operation or 12 mW/°C for case-mounted thermal conditions. Actual usable current depends on PCB copper area, airflow, and heatsinking - typical designs sustain 300–400 mA continuously with adequate layout.

Does MPSA13RLRP have an integrated base resistor?

No, the MPSA13RLRP does not include an integrated base resistor. It is a bare Darlington transistor requiring external base biasing. This differs from "digital transistor" variants like the MMBT2222A with built-in resistors. Designers must calculate and place appropriate series/base resistors to ensure proper saturation and avoid thermal overstress.

Is MPSA13RLRP RoHS-compliant and lead-free?

Yes, the MPSA13RLRP is offered in a Pb-free (RoHS-compliant) version, designated as MPSA13RLRPG in the ordering matrix. The "G" suffix confirms compliance with JEDEC JS-709 and EU RoHS Directive 2011/65/EU. Standard MPSA13RLRP may be legacy non-Pb-free; always verify suffix and datasheet revision when sourcing.

What is the typical noise performance of MPSA13RLRP in low-level amplification?

The MPSA13RLRP exhibits wideband noise voltage of ~5 nV/√Hz and noise current of ~10 pA/√Hz at I_C = 1 mA and 10 Hz–15.7 kHz bandwidth, per Figure 4 and Figure 5 in the official datasheet. These values make it suitable for pre-amplifier stages in industrial sensor interfaces but less optimal than JFETs for sub-nV applications.

Can MPSA13RLRP replace MPSA14RLRP in existing designs?

MPSA13RLRP can substitute for MPSA14RLRP in most switching applications, but with reduced minimum DC gain (5000 vs. 10,000). Circuits relying on marginal base drive margins or operating near h_FE rolloff may require verification. No PCB changes are needed - both share identical TO-92 package, pinout, and absolute maximum ratings.