STMicroelectronics TN1605H-6G-TR

Overview

TN1605H-6G-TR from STMicroelectronics is a high-temperature, 16 A RMS, 600 V repetitive peak blocking voltage silicon controlled rectifier (SCR) in D²PAK package, with 6 mA gate trigger current, 100 A/µs critical dI/dt, and rated for 150 °C junction operation. It serves as a robust main switching element in motorbike voltage regulators, solid-state relays, and inrush current limiters where thermal resilience and noise immunity are critical.

For engineers reviewing the TN1605H-6G-TR datasheet, TN1605H-6G-TR pinout, TN1605H-6G-TR application, or TN1605H-6G-TR equivalent, key selection criteria include its 150 °C Tj rating, 200 V/µs dV/dt immunity at max temperature, 1.1 °C/W junction-to-case thermal resistance, and D²PAK thermal pad layout compatibility with high-power PCB heatsinking.

Technical Context

This SCR uses planar passivated junction technology to sustain 600 V blocking capability while maintaining low on-state voltage (1.6 V max at 32 A, 25 °C) and stable gate triggering across -40 to +150 °C. Its 100 A/µs dI/dt rating enables reliable turn-on under high-slew-rate load conditions without commutation failure.

The device achieves 200 V/µs dV/dt immunity up to 150 °C-uniquely specified and verified-not derived from derating curves-and integrates ECOPACK®2-compliant lead-free packaging with UL 94 V0 epoxy encapsulation for industrial reliability.

Key Specifications

Pinout & Package

Package: D²PAK (TO-263), surface-mount with exposed thermal pad for direct PCB heatsinking. Dimensions per ST DocID030162 Rev 2: 10.28 mm × 8.70 mm × 4.60 mm, 1.5 g weight, tape-and-reel delivery (1000 pcs).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BT169G and STTH1606D, TN1605H-6G-TR uniquely delivers controllable 16 A switching with 150 °C thermal headroom and 200 V/µs noise immunity-making it irreplaceable for high-reliability, high-temperature AC power control where gate-triggered latching and surge robustness are mandatory.

Availability

TN1605H-6G-TR is available at Aetrix Electronics and suitable for motorbike voltage regulator circuits, inrush current limiting circuits, and solid-state relay designs requiring stable component supply, long-lifecycle availability, and consistent thermal performance across extended temperature ranges.

Supply support for TN1605H-6G-TR 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, power, MCU, and sensor solutions for automotive, industrial, and consumer markets.

TN1605H-6G-TR belongs to ST's high-temperature SCR product line, engineered specifically for ruggedized AC power control in harsh thermal and EMI environments-including transportation, industrial automation, and energy infrastructure.

FAQ

What is the maximum allowable case temperature for continuous 16 A RMS operation?

The datasheet specifies IT(RMS) = 16 A at Tc = 133 °C with 180° conduction angle. Exceeding this case temperature requires linear derating per Figure 2; at Tc = 142 °C, rated current drops to 6 A. Thermal design must ensure the D²PAK tab maintains ≤133 °C under worst-case ambient and airflow conditions.

Can TN1605H-6G-TR be used in DC switching applications?

Yes-it functions as a latching switch in DC circuits, but commutation requires external circuitry (e.g., forced reversal or series inductor) to reduce anode current below holding current (IH ≤ 20 mA). Unlike AC, DC operation lacks natural current zero-crossings, so gate retriggering is not self-clearing without active turn-off aids.

Is a heatsink mandatory for 10 A average current operation?

Yes. With Rth(j-c) = 1.1 °C/W and VTM ≈ 1.4 V at 10 A, power dissipation is ~14 W. Even at 25 °C ambient, Rth(j-a) ≈ 45 °C/W would yield >600 °C junction rise-physically impossible. A heatsink maintaining Tc ≤ 133 °C is essential; minimum recommended copper area is 10 cm² per ST's D²PAK footprint guidelines.

Does the "-TR" suffix affect electrical specifications?

No. TN1605H-6G-TR differs from TN1605H-6G only in packaging: tape-and-reel (1000 pcs) versus tube (50 pcs). All electrical, thermal, and mechanical specifications-including VDRM, IGT, Tj max, and D²PAK dimensions-are identical per ST's ordering information table (DocID030162 Rev 2, Table 7).