STMicroelectronics STTH61R04TV2

Overview

STTH61R04TV2 from STMicroelectronics is an ultrafast recovery dual diode in ISOTOP package, rated for 400 V repetitive peak reverse voltage, 30 A average forward current per diode at Tc = 80 °C, and 24 ns typical reverse recovery time (trr) at IF = 1 A, dIF/dt = −200 A/µs, VR = 30 V, Tj = 25 °C. It is engineered for high-frequency switching in welding equipment base-drive circuits.

For engineers reviewing the STTH61R04TV2 datasheet, STTH61R04TV2 pinout, STTH61R04TV2 application, or STTH61R04TV2 equivalent, key selection criteria include ultrafast trr, low VF (0.95 V typ. at Tj = 150 °C), insulated ISOTOP thermal performance, and dual-diode configuration for symmetrical half-bridge or dual-switching paths.

Technical Context

This dual ultrafast diode uses ST's planar platinum-doped silicon technology to achieve soft recovery with S-factor = 0.4 at Tj = 125 °C, minimizing EMI in hard-switched converters. Its 2500 VRMS electrical insulation and 45 pF junction capacitance support isolated gate drive and snubberless operation.

Thermal design leverages a low 1.5 °C/W junction-to-case resistance per diode and 0.1 °C/W coupling resistance between diodes in shared case, enabling simultaneous conduction with predictable ΔTj distribution under pulsed loads up to 900 A IFRM.

Key Specifications

Pinout & Package

The STTH61R04TV2 is housed in an ISOTOP package - a thermally optimized, electrically insulated metal package with four terminals (K1, K2, A1, A2), designed for direct heatsink mounting and 2500 VRMS isolation between case and terminals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultrafast dual diode applications.

Compared with MUR1560CT and VS-24CTH04PbF, STTH61R04TV2 uniquely delivers integrated 2500 VRMS isolation, 30 A per diode rating, and 24 ns trr in one package-enabling simplified layout, reduced component count, and elimination of external isolation barriers in compact high-reliability power stages.

Availability

STTH61R04TV2 is available at Aetrix Electronics and suitable for welding equipment, induction heating inverters, UPS output stages, and motor drive brake circuits requiring stable component supply, long-lifecycle availability, and traceable sourcing.

Supply support for STTH61R04TV2 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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The STTH series targets high-efficiency, high-reliability power conversion systems where ultrafast switching, low conduction loss, and robust thermal performance are critical-especially in welding, induction heating, and uninterruptible power supplies.

FAQ

What is the maximum junction temperature and how does it affect derating?

The STTH61R04TV2 has a maximum operating junction temperature of 150 °C. At this temperature, its forward voltage drops to 0.95 V (typ.), improving conduction efficiency but requiring careful thermal design. Derating begins above Tc = 80 °C: IF(AV) must be linearly reduced to zero at Tc = 150 °C per ST's recommended curve, based on 1.5 °C/W Rth(j-c).

Can STTH61R04TV2 be used in parallel with another identical device?

No-STTH61R04TV2 is a dual-diode-in-one-package device (K1/A1 + K2/A2), not two separate dies intended for paralleling. Parallel operation would require matched devices with external current-sharing resistors and identical thermal mounting; ST does not characterize or recommend paralleling multiple STTH61R04TV2 units due to inherent parameter spread and thermal coupling effects.

What is the significance of the "TV2" suffix in the part number?

The "TV2" suffix denotes the specific ISOTOP package variant with standardized marking (K2/K1/A2/A1 layout) and tube packaging (10 pcs/tube). It distinguishes this version from STTH61R04TV1, which shares identical electrical specs but may differ in internal die orientation or minor process revision-both are functionally interchangeable per ST's ordering documentation.

How does the softness factor (S = 0.4) impact EMI in converter designs?

A softness factor of 0.4 indicates highly controlled, gradual current decay during reverse recovery-reducing di/dt-induced voltage spikes and high-frequency ringing. This directly lowers conducted and radiated EMI, easing compliance with CISPR-11 Class A limits in industrial power supplies without adding ferrite beads or RC snubbers across the diode terminals.