onsemi 2SA2039-TL-H

Overview

2SA2039-TL-H from onsemi is a PNP bipolar junction transistor (BJT) designed for high-current switching in power control circuits, featuring −50 V V_CEO, −5 A I_C, low V_CE(sat) of −135 mV (max) at −2 A/−100 mA, and 400 MHz f_T. It is used in DC/DC converters, motor drivers, and relay drivers where robust saturation performance and thermal reliability are required.

For engineers reviewing the 2SA2039-TL-H datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, TP-FA package layout, switching timing data (t_on = 35 ns, t_f = 20 ns), thermal derating curves, and direct alternatives with documented parameter alignment.

Technical Context

The 2SA2039-TL-H employs FBET and MBIT processes to achieve high current gain (h_FE = 200–560 at −500 mA) and fast switching with low storage time (t_stg = 300 ns max). Its PNP topology supports high-side switching in complementary pairs with the NPN 2SC5706-TL-H.

Rated for T_j = 150°C and 15 W P_C at T_c = 25°C, it operates under pulsed conditions up to I_CP = −7.5 A (100 ms), with V_(BR)CEO = −50 V ensuring stable blocking in industrial power stages.

Key Specifications

Pinout & Package

2SA2039-TL-H uses the TP-FA surface-mount package (JEDEC TO-252, JEITA SC-63), optimized for thermal performance and automated assembly. Dimensions: 7.0 × 6.5 × 2.3 mm (L × W × H), mass = 0.282 g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP high-current switching applications.

Compared with 2SA2039-TL-E, the 2SA2039-TL-H adds halogen-free compliance without altering performance; versus MJD2955RLG, it trades lower voltage rating and higher current gain for significantly reduced saturation loss and tighter thermal footprint.

Availability

2SA2039-TL-H is available at Aetrix Electronics and suitable for DC/DC converters, industrial relay drivers, and motor control circuits requiring stable component supply, long-term lifecycle assurance, and halogen-free compliance.

Supply support for 2SA2039-TL-H 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, sensor, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.

The 2SA2039-TL-H belongs to onsemi's high-performance bipolar transistor family engineered for ruggedized power switching in industrial automation and power conversion systems where reliability under thermal stress is critical.

FAQ

What is the maximum continuous collector current for the 2SA2039-TL-H at 75°C case temperature?

The 2SA2039-TL-H supports −5 A I_C at T_c = 25°C, but derates linearly above that point. At T_c = 75°C, its usable continuous current drops to approximately −3.2 A per the PC–Tc curve in Figure IT02982 of the official datasheet. This reflects real-world thermal constraints in enclosed industrial enclosures without forced airflow.

Does the 2SA2039-TL-H have a built-in base-emitter resistor or require external biasing?

The 2SA2039-TL-H is a standard discrete PNP bipolar transistor with no integrated resistors - it requires external base drive circuitry. The datasheet specifies −100 mA I_B for full saturation at −2 A I_C, meaning a typical −1.2 V V_BE(sat) drop must be accommodated in the driver design.

How does the dual-collector configuration (Pins 2 and 4) affect PCB layout for the 2SA2039-TL-H?

Pins 2 and 4 of the 2SA2039-TL-H are internally shorted to the collector and thermally connected to the exposed die pad. For optimal thermal performance, both pins must be soldered to large copper pours or thermal vias - splitting heat path reduces junction-to-case resistance by ~15% compared to single-pad layouts.

Can the 2SA2039-TL-H replace the 2SA2039-E in an existing design without layout changes?

No - the 2SA2039-TL-H uses TP-FA (TO-252) packaging while the 2SA2039-E uses TP (TO-251). Though both share JEDEC outlines, TP-FA has a wider body (7.0 mm vs. 6.5 mm) and different lead pitch. PCB land patterns are not interchangeable; re-layout is required to accommodate the TP-FA outline and dual-collector pad geometry.

What is the guaranteed minimum h_FE for the 2SA2039-TL-H at −1 A collector current?

The 2SA2039-TL-H guarantees h_FE ≥ 200 at V_CE = −2 V and I_C = −500 mA per datasheet Table "Electrical Characteristics". At −1 A, h_FE remains ≥ 180 based on the IT00156 h_FE–I_C curve, confirming usable gain even at higher currents for stable base drive design.