STMicroelectronics X00602MA 2AL2

Overview

X00602MA2AL2 from STMicroelectronics is a logic-level sensitive silicon-controlled rectifier (SCR) in TO-92 preformed leads package, rated for 0.8 A RMS on-state current and 600 V repetitive peak off-state voltage, with 200 µA maximum gate trigger current. It serves as a low-power, high-sensitivity AC/DC switching device in protection circuits requiring minimal gate drive, such as ground fault interrupters and overvoltage crowbar systems.

For engineers reviewing the X00602MA2AL2 datasheet, X00602MA2AL2 pinout, X00602MA2AL2 application, or X00602MA2AL2 equivalent, key selection criteria include its 200 µA IGT, 125 °C max junction temperature, TO-92 mechanical form factor, and suitability for capacitive discharge ignition and electronic ballast protection where gate current is severely limited.

Technical Context

The X00602MA2AL2 is a unidirectional thyristor optimized for low-triggering-gate-current operation, enabling direct interface with microcontroller GPIOs or low-power logic without external amplification. Its 15 µA minimum IGT at 25 °C and 5 mA maximum holding current support reliable latching in low-energy transient detection paths.

It features a 25 V/µs minimum static dV/dt immunity at 125 °C with 1 kΩ gate-cathode resistance, and a 1.35 V maximum on-state voltage at 1 A and 25 °C-critical for minimizing conduction loss in thermally constrained TO-92 layouts.

Key Specifications

Pinout & Package

Supplied in TO-92 package with preformed leads (2AL2 packing variant), this SCR uses standard three-terminal configuration: Anode (A), Cathode (K), and Gate (G). Lead geometry conforms to ST's mechanical drawing for TO-92 preform (Ref. H = 7.69–9.69 mm, θ = 30°–50°).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar sensitive SCR applications.

Compared with STX00602MA1AA2, the X00602MA2AL2 offers identical electrical specs but optimized lead form for automated insertion; versus S4006L, it delivers true logic-level sensitivity at the cost of narrower vendor ecosystem support.

Availability

X00602MA2AL2 is available at Aetrix Electronics and suitable for ground fault circuit interrupters, overvoltage crowbar protection in power supplies, and capacitive discharge ignition systems requiring stable component supply across production lifecycles.

Supply support for X00602MA2AL2 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 for automotive, industrial, and consumer markets.

The X006 series belongs to ST's sensitive SCR product line, engineered specifically for low-energy gate-triggered protection and switching in space-constrained, thermally demanding applications like GFCIs and electronic lighting ballasts.

FAQ

What is the maximum allowable gate-cathode resistance for reliable triggering?

The datasheet specifies that IGT increases with higher RGK; at RGK = 1 kΩ, IGT remains ≤200 µA. For guaranteed turn-on across temperature, RGK should not exceed 1 kΩ-higher values risk failure to trigger above 85 °C due to rising IGT and falling IG sensitivity.

Can X00602MA2AL2 be used in DC circuits?

Yes, but only in controlled-turn-off configurations (e.g., series switch with forced commutation). As a standard SCR, it lacks gate turn-off capability and will remain latched until anode current falls below IH (≤5 mA). For pure DC switching, a TRIAC or MOSFET-based solution is recommended.

How does the TO-92 preformed lead variant affect thermal performance?

Thermal resistance Rth(j-l) is identical (70 °C/W) between straight and preformed TO-92 variants. However, preformed leads reduce mechanical stress on solder joints during thermal cycling, improving long-term reliability in vibration-prone applications like appliance ignitors or industrial controls.

Is X00602MA2AL2 compliant with UL recognition standards?

Yes-the TO-92 package uses epoxy meeting UL94 V0 flammability rating, and the device is listed under ST's ECOPACK2 environmental program. Full UL recognition documentation (E327853) is available directly from STMicroelectronics for certified end-equipment submissions.