onsemi 2SA1339T-AC

Overview

2SA1339T-AC from SANYO is a PNP epitaxial planar silicon transistor designed for high-speed switching applications, featuring V_CEO = −50 V, I_C = −500 mA, f_T = 300 MHz (at V_CE = −10 V, I_C = −50 mA), and h_FE = 100–200 (at I_C = −10 mA). It serves as the complementary PNP counterpart to 2SC3393 in push-pull amplifier and switching power supply output stages.

For engineers reviewing the 2SA1339T-AC datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed h_FE binning (Class R: 100–200), FBET process-enhanced switching speed, −50 V breakdown rating, and TO-92MOD package compatibility with space-constrained consumer audio and DC-DC converter designs.

Technical Context

The 2SA1339T-AC employs SANYO's FBET (Flat Base Epitaxial Transistor) process to achieve high f_T and low saturation voltages. Its DC current gain is binned per I_C = −10 mA test condition, with Class R (h_FE = 100–200) explicitly assigned to the "T-AC" suffix variant. The device operates with V_CE(sat) ≤ −0.5 V at I_C = −500 mA and I_B = −50 mA.

Switching performance is characterized using standardized test circuits (e.g., V_CC = −20 V, I_C = 10I_B1 = −10I_B2), yielding t_d ≤ 70 ns, t_r ≤ 70 ns, t_f ≤ 40 ns, and t_s ≤ 400 ns. Output capacitance C_ob is 3.7 pF at V_CB = −10 V, f = 1 MHz.

Key Specifications

Pinout & Package

2SA1339T-AC is housed in a TO-92MOD (SOT-23A-compatible footprint) plastic package with 3 leads, optimized for automated insertion and compact board layouts. Lead finish is matte tin, RoHS-compliant per SANYO documentation dated 2002.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 2SA1339T-AC, the 2SA1037AK-TL-E trades bandwidth for higher DC gain stability, while the MMBT2907ALT1G offers SMT compatibility at the cost of un-binned h_FE - making 2SA1339T-AC optimal for through-hole, high-frequency, gain-matched complementary designs.

Availability

2SA1339T-AC is available at Aetrix Electronics and suitable for audio amplifier output stages, DC-DC converter switches, LED drivers, and relay interface circuits requiring stable component supply across industrial and consumer production cycles.

Supply support for 2SA1339T-AC 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

SANYO Electric Co., Ltd. was a Japanese semiconductor manufacturer specializing in analog and discrete devices, later integrated into ON Semiconductor in 2011.

The 2SA1339T-AC belongs to SANYO's high-speed bipolar transistor family engineered for compact, high-efficiency switching in consumer audio, power management, and interface applications.

FAQ

What is the h_FE range guaranteed for 2SA1339T-AC?

The 2SA1339T-AC is factory-binned to Class R, guaranteeing h_FE = 100–200 when measured at I_C = −10 mA and V_CE = −5 V. This binning is explicitly documented in the No.1392-2/5 datasheet revision and applies only to parts marked "T-AC". The 2SA1339T-AC does not carry broader h_FE tolerances - values outside this range indicate non-conforming units.

Is 2SA1339T-AC pin-compatible with standard TO-92 transistors?

Yes, the 2SA1339T-AC uses the TO-92MOD package with E-C-B pinout (1=Emitter, 2=Collector, 3=Base), matching JEDEC TO-92 mechanical dimensions and lead spacing. It is physically compatible with standard TO-92 sockets and wave soldering fixtures, though its thinner profile may require minor adjustment in automated insertion equipment calibrated for legacy TO-92.

What is the maximum operating junction temperature for 2SA1339T-AC?

The absolute maximum junction temperature (T_j) for 2SA1339T-AC is +150 °C, as specified in the Absolute Maximum Ratings table. Derating begins at T_a = 25 °C, with total power dissipation decreasing linearly to zero at +150 °C ambient - meaning the 2SA1339T-AC must be thermally managed to maintain T_j ≤ +150 °C under all operating conditions.

Does 2SA1339T-AC support operation in linear (active) mode?

Yes, the 2SA1339T-AC is characterized for both switching and linear operation. Its h_FE curves, V_BE vs. I_C, and output characteristics (IC vs. V_CE) are fully specified across I_C = −1 mA to −500 mA and V_CE = −1 V to −50 V, confirming suitability for active-region amplification in low-noise preamp or feedback control stages.

What is the switching time performance of 2SA1339T-AC under standard test conditions?

Per the No.1392-4/5 datasheet, the 2SA1339T-AC achieves t_d ≤ 70 ns, t_r ≤ 70 ns, t_f ≤ 40 ns, and t_s ≤ 400 ns when tested at V_CC = −20 V, I_C = 10I_B1 = −10I_B2. These values reflect actual measured performance on production lots and are guaranteed minimums - not typicals - enabling reliable timing budgeting in high-speed digital and power control designs.