onsemi MPS8598RLRA

Overview

MPS8598RLRA from onsemi is a PNP bipolar junction transistor (BJT) designed for general-purpose amplification and switching in low-to-medium power analog and digital circuits. It features V_CEO = 60 V, I_C = 500 mA continuous, h_FE = 100–300 at I_C = 1.0 mA, f_T = 150 MHz, and operates across −55°C to +150°C junction temperature range - commonly used in discrete amplifier stages, relay drivers, and level-shifting interfaces.

For engineers reviewing the MPS8598RLRA datasheet, pinout, applications, or equivalent options, key selection criteria include its TO-92 package compatibility, PNP polarity with negative voltage/current conventions, saturation performance under I_C/I_B = 10, and thermal resistance (R_JA = 200°C/W) for ambient-limited designs.

Technical Context

The MPS8598RLRA is a silicon planar epitaxial PNP transistor optimized for linear amplification and fast-switching operation. Its DC current gain (h_FE) is specified at three collector current levels (1 mA, 10 mA, 100 mA), supporting stable biasing across signal amplitude ranges. The device exhibits V_CE(sat) ≤ 0.4 V at I_C = 100 mA / I_B = 5 mA, enabling efficient low-voltage switching.

Small-signal behavior is characterized by f_T = 150 MHz at I_C = 10 mA / V_CE = 5 V, C_obo = 8.0 pF, and C_ibo = 30 pF - confirming suitability for RF-coupled preamplifier and broadband driver applications up to ~50 MHz. Thermal design must account for R_JC = 83.3°C/W and R_JA = 200°C/W under standard PCB mounting.

Key Specifications

Pinout & Package

Package: TO-92 (Case 29-11, Style 1), epoxy-molded plastic with 3 leads. Standard lead configuration: Pin 1 = Emitter, Pin 2 = Base, Pin 3 = Collector. Compatible with manual soldering and automated tape-and-reel placement (MPS8598RLRA uses 2,000-unit reel format).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPS8599RLRA, the MPS8598RLRA trades 20 V breakdown margin for tighter gain consistency at low currents; versus BC807-40, it offers superior thermal handling in TO-92 but requires more board area - making it optimal for cost-sensitive, medium-power industrial signal conditioning where reliability under thermal stress is critical.

Availability

MPS8598RLRA is available at Aetrix Electronics and suitable for relay drivers, audio preamplifiers, level-shifting interfaces, and current mirror references requiring stable component supply with Pb-free compliance and tape-and-reel logistics support.

Supply support for MPS8598RLRA 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, cloud, and consumer markets.

The MPS8598RLRA belongs to onsemi's legacy general-purpose bipolar transistor family, engineered for robustness, manufacturability, and broad applicability in discrete analog signal chains and power interface circuits.

FAQ

What is the maximum collector-emitter voltage rating for MPS8598RLRA?

The MPS8598RLRA has a maximum collector-emitter voltage (V_CEO) rating of 60 Vdc. This value is measured with I_C = 10 mA and I_B = 0, and represents the highest voltage that can be applied between collector and emitter before breakdown occurs. Exceeding this rating risks permanent device damage, especially under sustained or repetitive stress conditions. Always maintain ≥20% derating margin in production designs using MPS8598RLRA.

Does MPS8598RLRA support Pb-free soldering processes?

Yes, MPS8598RLRA is manufactured in a Pb-free TO-92 package compliant with RoHS Directive 2011/65/EU. It supports standard lead-free reflow profiles (peak temperature ≤ 260°C) and is qualified for both wave and hand-soldering. The device marking "MPS8598RLRA" includes no lead-based materials in die attach, bond wires, or mold compound - verified per onsemi's Pb-Free Packaging Specification BRD8011/D.

What is the typical DC current gain (h_FE) of MPS8598RLRA at 10 mA collector current?

The typical DC current gain (h_FE) of MPS8598RLRA at I_C = 10 mA and V_CE = 5.0 Vdc is 200, with a guaranteed minimum of 100. This gain value is confirmed in the Electrical Characteristics table of the official datasheet (MPS8098/D, Rev. 5). Designers should use the minimum value for worst-case bias calculations, particularly in temperature-varying environments where h_FE decreases above 25°C.

Can MPS8598RLRA be used as a direct replacement for MPS8598 in existing designs?

Yes, MPS8598RLRA is functionally and electrically identical to MPS8598, differing only in packaging format: MPS8598RLRA is supplied in 2,000-unit tape-and-reel, while MPS8598 is in 5,000-unit bulk boxes. Both share identical TO-92 mechanical dimensions, pinout (Emitter-Base-Collector), and full electrical specifications. No schematic or layout changes are required when substituting MPS8598RLRA for MPS8598 in automated assembly lines.

What is the thermal resistance from junction to ambient (R_JA) for MPS8598RLRA?

The thermal resistance from junction to ambient (R_JA) for MPS8598RLRA is 200°C/W, measured with the device soldered onto a standard FR-4 printed circuit board per JEDEC JESD51-2. This value assumes natural convection cooling and no added heatsinking. At 500 mA collector current and 0.4 V saturation voltage, power dissipation reaches 200 mW - resulting in ~40°C junction-to-ambient rise. For sustained operation near maximum ratings, PCB copper area and airflow must be validated per onsemi's thermal response curves (Figure 1).