onsemi 2SA2186-AN

Overview

2SA2186-AN from onsemi is a PNP bipolar junction transistor rated for -50 V V_CEO, -2 A I_C, with low V_CE(sat) of -0.22 V (typ) at -1 A/-50 mA, high-speed switching (t_on = 35 ns), and f_T = 420 MHz - used in relay drivers and voltage regulators requiring robust saturation performance.

For engineers reviewing the 2SA2186-AN datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed V_CE(sat) ≤ -0.43 V at -1 A/-50 mA, h_FE range of 40–560 across operating currents, and SC-71 (NMP) package compatibility with automated taping and high-density PCB layouts.

Technical Context

This PNP transistor employs onsemi's MBIT process to achieve large current capacity and low saturation voltage while maintaining high-speed switching capability. Its f_T of 420 MHz and fast transition times (t_on/t_f = 35 ns/24 ns) support operation in pulse-driven control circuits up to several hundred MHz.

The device operates within a junction temperature range of -55°C to +150°C and delivers stable DC current gain (h_FE1 = 200–560 at -100 mA; h_FE2 = 40 at -1.5 A), enabling reliable use in both linear regulation and saturated switching modes without thermal runaway under defined bias conditions.

Key Specifications

Pinout & Package

Package: SC-71 (JEITA/ JEDEC), also designated NMP (Taping); compact surface-mount outline with 0.275 g mass and 6.9 mm × 4.5 mm footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 2SA1774EBTLR and BC807-40W, the 2SA2186-AN provides superior current handling, lower saturation loss, and faster switching - making it the preferred choice for industrial-grade relay and lamp drivers where reliability under sustained load is critical.

Availability

2SA2186-AN is available at Aetrix Electronics and suitable for voltage regulators, relay drivers, lamp drivers, and electrical equipment requiring stable component supply across automotive, industrial control, and embedded power subsystems.

Supply support for 2SA2186-AN 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 innovation for automotive, industrial, cloud, medical, and IoT applications.

The 2SA2186-AN belongs to onsemi's general-purpose bipolar transistor product line, engineered for high-reliability discrete switching and amplification in negative-rail power control systems.

FAQ

What is the maximum continuous collector current rating for the 2SA2186-AN?

The 2SA2186-AN has a maximum continuous collector current (I_C) rating of -2 A at T_a = 25°C. This rating assumes proper PCB copper area or heatsinking to maintain junction temperature below 150°C. At elevated ambient temperatures or with limited thermal relief, derating per the PC–Ta curve (Fig. IT10535) is required to avoid thermal failure.

Does the 2SA2186-AN support high-speed switching applications?

Yes, the 2SA2186-AN supports high-speed switching with measured t_on = 35 ns, t_stg = 200 ns, and t_f = 24 ns under specified test conditions (V_CC = -25 V, R_L = 50 Ω). Its 420 MHz f_T further confirms suitability for PWM-based lamp dimming and digital interface buffering up to several hundred kHz.

What package type does the 2SA2186-AN use, and is it RoHS-compliant?

The 2SA2186-AN uses the SC-71 package (JEITA/ JEDEC designation), also labeled NMP(Taping) in ordering information. It is Pb-free and RoHS-compliant, as confirmed by the "Pb Free" marking in the ordering table and compliance documentation referenced in the datasheet footer.

How does the DC current gain (h_FE) of the 2SA2186-AN vary with operating conditions?

The 2SA2186-AN exhibits h_FE1 = 200–560 at V_CE = -2 V and I_C = -100 mA, and h_FE2 = 40 at V_CE = -2 V and I_C = -1.5 A. This wide gain spread reflects intentional design for both small-signal amplification and high-current saturation - engineers must verify biasing networks across the full I_C range to ensure consistent operation.

Can the 2SA2186-AN replace older PNP transistors like the 2SA1013 in existing designs?

The 2SA2186-AN offers higher current (-2 A vs. -1.5 A), lower V_CE(sat) (-0.22 V typ vs. -0.5 V), and faster switching than the 2SA1013. However, it uses SC-71 instead of TO-92, so PCB layout and thermal design must be revalidated. Direct replacement is not mechanical or electrical drop-in; redesign is required for footprint and thermal management.