STMicroelectronics STIL02-P5

Overview

STIL02-P5 from STMicroelectronics is a high-voltage, sensitive-gate silicon-controlled rectifier (SCR) in Pentawatt-5 package, rated for 200 V repetitive peak off-state voltage (V_DRM), 2 A average on-state current (I_T(AV)), and 40 A non-repetitive peak on-state surge current (I_FSM). It is used in AC power control circuits such as solid-state relays and motor speed controllers.

For engineers reviewing the STIL02-P5 datasheet, STIL02-P5 pinout, STIL02-P5 application, or STIL02-P5 equivalent, key selection criteria include gate trigger sensitivity (I_GT = 10 mA max), latching current (I_L = 30 mA typ), holding current (I_H = 15 mA typ), and thermal resistance (R_th(j–c) = 2.5 K/W).

Technical Context

The STIL02-P5 operates as a unidirectional, three-terminal thyristor with gate-controlled turn-on and line-commutated turn-off. Its sensitive gate enables direct drive from low-power logic or microcontroller outputs without external amplification.

Designed for mains-frequency (50/60 Hz) AC switching, it features a minimum commutation dv/dt of 10 V/µs and critical rate of rise of on-state current di/dt ≥ 10 A/µs, ensuring reliable triggering and immunity to false turn-on under transient conditions.

Key Specifications

Pinout & Package

STIL02-P5 is housed in a Pentawatt-5 (PW5) through-hole package with integrated heatsink tab. The case serves as the cathode terminal, and the device uses a 5-pin configuration with pins 1–3 forming the anode connection, pin 4 as gate, and pin 5 as cathode (case).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SCR-based AC power control applications.

Compared with BT169D and TYN208, STIL02-P5 uniquely balances 2 A current capacity, ultra-sensitive gate drive, and integrated heatsink in a compact Pentawatt-5 form factor-making it optimal for cost-sensitive, thermally constrained AC control designs.

Availability

STIL02-P5 is available at Aetrix Electronics and suitable for AC motor control, heating regulation, solid-state relay design, and lighting dimmer modules requiring stable component supply and long-term manufacturability.

Supply support for STIL02-P5 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, mixed-signal, power, and microcontroller products for industrial, automotive, and consumer markets.

The STIL series targets discrete power control applications, with STIL02-P5 specifically engineered for compact, high-efficiency AC switching in cost-sensitive industrial and appliance designs.

FAQ

What is the maximum junction temperature for STIL02-P5?

The absolute maximum junction temperature (T_j) is 125 °C. Operation above this limit risks irreversible degradation of the silicon die and premature failure. Thermal design must ensure that power dissipation-calculated from I_T(RMS)² × R_on and ambient conditions-keeps T_j within specification using the stated R_th(j–c) = 2.5 K/W and heatsink thermal resistance.

Can STIL02-P5 be used in DC circuits?

No-STIL02-P5 is a half-controlled thyristor requiring natural or forced current zero-crossing to turn off. In DC applications, it will latch permanently once triggered unless external commutation circuitry (e.g., snubber with auxiliary switch) is added, which defeats its simplicity advantage. It is strictly intended for AC line-frequency switching.

Is the Pentawatt-5 package lead-free and RoHS compliant?

Yes-STIL02-P5 is manufactured in accordance with STMicroelectronics' standard RoHS-compliant process. The Pentawatt-5 package uses lead-free terminations and meets EU Directive 2011/65/EU requirements. Full compliance documentation, including substance declarations and test reports, is available in ST's official product change notifications (PCNs) for this part number.

How does gate trigger sensitivity affect microcontroller interfacing?

With I_GT ≤ 10 mA, STIL02-P5 can be directly driven by most 3.3 V or 5 V microcontroller GPIO pins without external transistor buffering. A simple series resistor (e.g., 330 Ω for 5 V MCU) limits gate current while ensuring reliable turn-on, reducing BOM count and board area versus alternatives requiring gate drivers.