STMicroelectronics STTH60L04W

Overview

STTH60L04W from STMicroelectronics is an ultrafast high-voltage silicon rectifier diode in DO-247 package, rated for 400 V repetitive peak reverse voltage, 60 A average forward current at Tc = 90 °C, and 50 ns maximum reverse recovery time (trr) at 125 °C. It serves as output rectification in high-efficiency switching power supplies and industrial welding equipment.

For engineers reviewing the STTH60L04W datasheet, STTH60L04W pinout, STTH60L04W application, or STTH60L04W equivalent, key selection criteria include conduction loss modeling (P = 0.8×IF(AV) + 0.0033×IF²(RMS)), low thermal resistance (Rth(j-c) = 0.70 °C/W), soft recovery behavior (Sfactor = 0.4), and junction temperature capability up to 175 °C.

Technical Context

This device employs ST's proprietary 400 V ultrafast technology optimized for reduced switching and conduction losses in hard-switched topologies. Its low VF (0.83 V typ. at 150 °C, 60 A) and fast trr (36–50 ns depending on dIF/dt) enable high-frequency operation while maintaining low forward drop under thermal stress.

The DO-247 package provides direct case-to-heatsink conduction cooling with Rth(j-c) ≤ 0.70 °C/W, and its soft recovery (Sfactor ≥ 0.4) minimizes EMI generation during turn-off in inductive loads typical of welding inverters and SMPS secondary-side rectification.

Key Specifications

Pinout & Package

STTH60L04W is a two-terminal axial diode in DO-247 package: anode and cathode are accessed via the lead and metal slug respectively. The slug serves as the cathode terminal and primary thermal path to heatsink.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultrafast high-voltage rectifier applications.

Compared with MUR6040CT and VS-60EWH04, STTH60L04W delivers the lowest VF at elevated temperature and tightest trr specification-critical for efficiency-sensitive, high-frequency industrial power stages where thermal margin and EMI control are prioritized.

Availability

STTH60L04W is available at Aetrix Electronics and suitable for switching power supplies, industrial welding equipment, motor drive DC links, and UPS output stages requiring stable component supply and long-term industrial lifecycle support.

Supply support for STTH60L04W 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-reliability industrial power conversion, emphasizing ultrafast recovery, thermal robustness, and rugged packaging for demanding rectification roles in welders, UPS, and SMPS.

FAQ

What is the maximum allowable case temperature for continuous 60 A operation?

The datasheet specifies IF(AV) = 60 A at Tc = 90 °C. Exceeding this case temperature requires derating per Figure 1; at Tc = 100 °C, average current must be reduced to ~52 A to maintain safe junction temperature below 175 °C.

Does STTH60L04W have avalanche capability?

No-STTH60L04W is not rated for repetitive avalanche operation. It is designed for clamped or snubber-protected circuits. Absolute maximum VRRM = 400 V defines its reverse blocking limit; operation beyond this risks catastrophic failure.

Can STTH60L04W replace standard fast recovery diodes in existing designs?

Yes-if the PCB footprint accommodates DO-247 and thermal design supports Rth(j-c) = 0.70 °C/W. Its lower VF and faster trr typically improve efficiency and reduce EMI, but layout review is required to verify snubber adjustments and voltage overshoot margins.

Is STTH60L04W RoHS-compliant and halogen-free?

Yes-STTH60L04W is manufactured in ST's ECOPACK®-compliant DO-247 package, meeting RoHS Directive 2011/65/EU and halogen-free requirements per IEC 61249-2-21, with pure tin-plated leads and slug.