onsemi MPSA75RLRAG

Overview

MPSA75RLRAG from onsemi is a PNP silicon Darlington transistor in TO-92 package, rated for −40 V V_CE, −500 mA I_C, and 625 mW power dissipation at 25°C. It delivers h_FE ≥ 10,000 at −10 mA I_C, −5.0 V V_CE, and features −2.0 V V_BE(on) and −1.5 V V_CE(sat) under specified drive conditions - used in low-speed switching and high-gain amplification circuits such as relay drivers and sensor interface stages.

For engineers reviewing the MPSA75RLRAG datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed DC current gain >10 k, Pb-free tape-and-reel packaging (2,000 units), TO-92 mechanical compatibility, thermal resistance of 200°C/W, and validated operation across −55°C to +150°C junction temperature range.

Technical Context

The MPSA75RLRAG implements a two-stage PNP Darlington configuration, delivering high current gain with single-package integration. Its electrical behavior is defined by V_CE(sat) ≤ −1.5 V at I_C = −100 mA / I_B = −0.1 mA and V_BE(on) ≤ −2.0 V at I_C = −100 mA, enabling efficient base-driven saturation in low-voltage control logic.

It operates within a safe active region bounded by thermal limit (625 mW @ T_A = 25°C, derated 5.0 mW/°C), second breakdown, and current limit curves - confirmed per Figure 5 of the official datasheet. Junction-to-ambient thermal resistance is fixed at 200°C/W for standard PCB mounting without heatsink.

Key Specifications

Pinout & Package

Package: TO-92 (Case 29−11, Style 1), epoxy-molded plastic with 3 leads. Standard lead assignment applies across all MPSA75 variants including MPSA75RLRAG.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPSA75RLRA and PN2907A, the MPSA75RLRAG uniquely combines Pb-free compliance, Darlington-level gain (>10 k), and industrial temperature range in a standard TO-92 reel format - making it optimal for new designs targeting regulatory compliance and minimal base-drive overhead.

Availability

MPSA75RLRAG is available at Aetrix Electronics and suitable for relay drivers, sensor interfaces, LED regulators, and industrial level shifters requiring stable component supply, RoHS compliance, and verified thermal performance across extended temperature ranges.

Supply support for MPSA75RLRAG 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, sensors, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.

The MPSA75RLRAG belongs to onsemi's general-purpose bipolar transistor product line, designed specifically for cost-sensitive, high-reliability discrete switching and amplification tasks in industrial controls and consumer electronics.

FAQ

What is the maximum collector-emitter voltage rating for MPSA75RLRAG?

The MPSA75RLRAG has a maximum collector-emitter sustaining voltage (V_CE(sus)) of −40 V under open-base conditions, as specified in the OFF CHARACTERISTICS table of the official datasheet. This rating defines the upper limit before avalanche breakdown occurs and must not be exceeded in circuit design. The MPSA75RLRAG is not rated for −60 V operation - that value applies only to the MPSA77 variant.

Does MPSA75RLRAG support surface-mount assembly despite its TO-92 package?

Yes, the MPSA75RLRAG is supplied in tape-and-reel format (2,000 units per reel) compatible with standard pick-and-place equipment for through-hole components. While TO-92 is traditionally hand-soldered or wave-soldered, the reel packaging and orientation per BRD8011/D allow automated insertion in high-volume manufacturing. The MPSA75RLRAG does not require manual placement.

What is the guaranteed DC current gain (h_FE) of MPSA75RLRAG at typical operating conditions?

The MPSA75RLRAG guarantees h_FE ≥ 10,000 when tested at I_C = −10 mA and V_CE = −5.0 V, per the ON Semiconductor datasheet revision 4. This minimum gain is confirmed across the full −55°C to +150°C junction temperature range and distinguishes the MPSA75RLRAG from standard PNP transistors like the PN2907A, which specify only h_FE ≥ 100.

Is MPSA75RLRAG suitable for automotive under-hood applications?

The MPSA75RLRAG is rated for junction temperatures from −55°C to +150°C and has been validated for industrial environments, but it is not AEC-Q101 qualified. For non-safety-critical under-hood functions - such as cabin fan control or lighting drivers - the MPSA75RLRAG may be used with appropriate derating and system-level validation. However, the MPSA75RLRAG is not approved for airbag, braking, or steering systems.

How does the thermal resistance of MPSA75RLRAG affect its power handling capability?

The MPSA75RLRAG has a junction-to-ambient thermal resistance (R_JA) of 200°C/W, meaning each watt of dissipated power raises the junction temperature by 200°C above ambient. At 25°C ambient, its 625 mW power limit drops to 375 mW at 65°C ambient - requiring careful PCB copper area allocation or airflow management. This R_JA value is measured on standard JEDEC test board conditions and applies directly to the MPSA75RLRAG in TO-92 package.