STMicroelectronics FERD30H100SH

Overview

FERD30H100SH from STMicroelectronics is a 100 V field-effect rectifier diode in IPAK package, rated for 30 A average forward current, with max forward voltage drop of 0.405 V at 30 A and 125 °C, max reverse leakage of 130 µA at 25 °C, and junction temperature rating up to 175 °C. It replaces Schottky diodes in high-efficiency, thermally constrained AC/DC and DC/DC converters.

For engineers reviewing the FERD30H100SH datasheet, FERD30H100SH pinout, FERD30H100SH application, or FERD30H100SH equivalent, key selection criteria include its VF/IR trade-off stability over temperature, low thermal resistance (Rth(j-c) = 0.9 °C/W), ECOPACK®2 compliance, and suitability for confined-space power supplies requiring reduced thermal runaway risk.

Technical Context

This device uses ST's proprietary field-effect rectifier process to decouple forward voltage (VF) and reverse leakage (IR) dependencies on junction temperature-enabling stable conduction and blocking behavior across -65 °C to +175 °C. Its design eliminates the exponential IR rise typical of Schottky diodes under thermal stress.

The IPAK package provides mechanical robustness and thermal performance comparable to DPAK but with higher creepage/clearance due to extended leadframe geometry. Thermal impedance is optimized for conduction cooling via PCB copper area, with Rth(j-a) dropping to ~25 °C/W on 40 cm² copper (per Figure 7 extrapolation).

Key Specifications

Pinout & Package

IPAK package: 3-terminal surface-mount outline with isolated tab (anode), cathode, and auxiliary anode connection; designed for automated assembly and high thermal transfer via exposed copper pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar field-effect rectifier applications.

Compared with FERD30H100SB-TR, the FERD30H100SH offers superior mechanical rigidity and thermal interface control via IPAK's extended tab; versus STTH30L06D, it delivers 65% lower conduction loss at 30 A but requires stricter layout attention to minimize parasitic inductance in high-dI/dt circuits.

Availability

FERD30H100SH is available at Aetrix Electronics and suitable for server power supplies, industrial DC/DC converters, telecom rectifiers, and EV onboard charger auxiliary supplies requiring stable component supply and long-term lifecycle support.

Supply support for FERD30H100SH 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 microcontrollers, power devices, analog ICs, and MEMS sensors for industrial, automotive, and consumer markets.

The FERD30H100SH belongs to ST's Field-Effect Rectifier Diode product line, engineered specifically to replace Schottky diodes in high-efficiency, thermally constrained power conversion systems where thermal runaway and leakage-driven inefficiency are critical concerns.

FAQ

What is the maximum surge current rating for FERD30H100SH?

The FERD30H100SH has a non-repetitive surge forward current (IFSM) rating of 150 A for 10 ms sinusoidal pulses, as specified for DPAK/IPAK packages in Table 2. This value applies directly to the IPAK variant and reflects its ability to withstand short-duration overload events such as inrush or fault conditions without degradation.

Can FERD30H100SH be mounted directly to a heatsink?

No-the IPAK package lacks an electrically isolated tab; the metal tab is internally connected to the anode. Direct heatsink mounting requires electrical isolation (e.g., mica washer + thermal paste) or use of a thermally conductive, electrically insulating pad rated for ≥175 °C to prevent shorting and ensure safe thermal transfer.

How does FERD30H100SH's forward voltage compare at different temperatures?

At 30 A, VF is 0.680–0.745 V at 125 °C (Table 4), decreasing to 0.550–0.620 V at 25 °C. The negative temperature coefficient of VF is significantly flatter than Schottky diodes, resulting in only ~0.1 V increase over 100 °C-reducing thermal feedback loop severity in high-power designs.

Is FERD30H100SH compatible with lead-free reflow profiles?

Yes-FERD30H100SH is qualified for standard lead-free reflow per JEDEC J-STD-020, with peak temperature up to 260 °C for 30 seconds. The IPAK package's epoxy meets UL94 V0 and withstands multiple reflow cycles without delamination or parameter shift, provided preheat and soak profiles comply with ST's recommended ramp rates.