STMicroelectronics 2STX1360

Overview

2STX1360 from STMicroelectronics is a low-voltage, fast-switching NPN power transistor in TO-92 package, featuring V_CE(sat) = 130 mV (typ.) at I_C = 2 A / I_B = 100 mA, h_FE = 160–400 (I_C = 0.1–1 A), and f_T = 130 MHz - optimized for LED driver and relay drive circuits requiring high gain and low conduction loss.

For engineers reviewing the 2STX1360 datasheet, 2STX1360 pinout, 2STX1360 application, or 2STX1360 equivalent, this device supports precise DC switching control in emergency lighting, voltage regulation, and discrete load interface designs where thermal resistance (R_thJA = 125 °C/W) and fast turn-off (t_f = 54–65 ns) are critical to system reliability.

Technical Context

This NPN bipolar junction transistor uses ST's PB-HCD (Power Bipolar High Current Density) process to achieve simultaneous high current gain and low saturation voltage - enabling efficient linear and switching operation below 60 V V_CEO. Its 3 A continuous collector current and 5 A peak rating support transient-heavy loads like solenoids and LED strings.

The device operates with V_BE(on) = 630–730 mV at I_C = 100 mA and exhibits resistive-load switching times of t_d = 17–20 ns, t_r = 81–100 ns, t_s = 620–720 ns, and t_f = 54–65 ns - confirming suitability for medium-frequency (<5 MHz) digital switching applications without snubbing.

Key Specifications

Pinout & Package

2STX1360 is housed in a standard TO-92 plastic package (bulk bag), with lead configuration matching JEDEC TO-92 outline: emitter (E), base (B), collector (C) arranged in linear order from left to right when viewing the flat side with leads down.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar NPN power transistor applications.

Compared with BC337-40 and MJD127, the 2STX1360 uniquely balances 3 A capability, ultra-low saturation, and TO-92 form factor - making it optimal for space-constrained, medium-power DC switching where thermal budget and drive simplicity are jointly constrained.

Availability

2STX1360 is available at Aetrix Electronics and suitable for emergency lighting systems, LED driver modules, and relay-based industrial control panels requiring stable component supply and long-term manufacturing continuity.

Supply support for 2STX1360 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, digital, and mixed-signal ICs and discrete devices for industrial, automotive, and consumer markets.

The 2STX1360 belongs to ST's legacy power bipolar transistor family, engineered specifically for cost-sensitive, medium-power linear and switching applications where high gain and low saturation voltage are co-required.

FAQ

What is the maximum safe operating temperature for 2STX1360?

The 2STX1360 has a maximum junction temperature (T_J) of 150 °C and storage temperature range of –65 to +150 °C. With R_thJA = 125 °C/W, sustained 3 A operation at 25 °C ambient requires ≥2 cm² of 2-oz copper pour to limit T_J to 125 °C. Derating is mandatory above 25 °C ambient.

Can 2STX1360 replace BC547 in existing designs?

No - while both are TO-92 NPN transistors, the 2STX1360 is rated for 3 A continuous current and 1.2 W dissipation, whereas BC547 handles only 100 mA and 500 mW. Substituting without redesigning base drive, heat sinking, and layout will cause immediate thermal runaway or secondary breakdown.

Is 2STX1360 RoHS-compliant and halogen-free?

Yes - per STMicroelectronics' ECOPACK® documentation, the 2STX1360 meets RoHS Directive 2011/65/EU and is halogen-free. The TO-92 package carries the ECOPACK® grade marking consistent with ST's environmental compliance program as published on www.st.com.

Does 2STX1360 require a base resistor in switching applications?

Yes - a base resistor is mandatory to limit I_B to ≤150 mA (absolute max) and ensure saturation. For 3 A I_C, typical design uses I_B = 150 mA with V_BE(sat) ≈ 1.05 V, requiring ~22 Ω from a 5 V logic source. Undriven base risks thermal failure due to incomplete saturation.