STMicroelectronics STTH10R04G

Overview

STTH10R04G from STMicroelectronics is an ultrafast recovery power rectifier in D²PAK package, rated for 400 V repetitive peak reverse voltage, 10 A peak forward current, and 15 ns typical reverse recovery time. It serves as a clamping diode in plasma display panel (PDP) energy recovery circuits, delivering low conduction loss (VF = 1.15 V @ 125 °C, 10 A) and high surge capability (100 A non-repetitive).

For engineers reviewing the STTH10R04G datasheet, STTH10R04G pinout, STTH10R04G application, or STTH10R04G equivalent, key selection criteria include ultrafast trr performance under high dIF/dt conditions, thermal robustness up to 175 °C junction temperature, low leakage (<100 µA @ 125 °C), soft recovery behavior (Sfactor ≥ 0.3), and D²PAK thermal resistance (Rth(j-c) = 3.5 °C/W).

Technical Context

This device implements a planar epitaxial silicon PN junction optimized for ultrafast switching in high-frequency energy recovery topologies. Its design balances low forward voltage drop against minimal reverse recovery charge (Qrr), enabling efficient clamping in resonant PDP sustain circuits where rapid turn-off and low IRM are critical.

Dynamic performance is characterized by controlled softness (Sfactor ≥ 0.3) and predictable trr variation with dIF/dt (15–40 ns over 50–500 A/µs), ensuring stable operation across wide load transients. Thermal design relies on low Rth(j-c) = 3.5 °C/W and high Tj(max) = 175 °C, supporting continuous conduction in thermally constrained modules.

Key Specifications

Pinout & Package

D²PAK (TO-263) package with isolated tab (cathode-connected metal pad), 3-terminal configuration, surface-mount footprint per Figure 14, UL94 V0 epoxy, ECOPACK®2 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH12R06D and MUR1040CT, STTH10R04G offers the fastest trr (15 ns) and lowest thermal resistance (3.5 °C/W) in D²PAK, making it optimal for high-frequency, thermally dense PDP and resonant converter clamp roles where speed and thermal coupling outweigh voltage headroom or dual-diode convenience.

Availability

STTH10R04G is available at Aetrix Electronics and suitable for plasma display panel energy recovery, industrial DC-DC clamp circuits, and motor drive regenerative braking requiring stable component supply and long-term production continuity.

Supply support for STTH10R04G 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.

STTH10R04G belongs to ST's high-voltage ultrafast rectifier product line, engineered specifically for energy recovery and clamping in high-frequency resonant power conversion systems such as PDP sustain circuits and industrial SMPS.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STTH10R04G has a maximum junction temperature of 175 °C and a junction-to-case thermal resistance of 3.5 °C/W. Assuming worst-case 10 A peak current with VF = 1.35 V (max), power dissipation is ~13.5 W. To stay within Tj limit, case temperature must not exceed 175 − (13.5 × 3.5) ≈ 128 °C. Derating is required above this point.

Is the NC pin electrically isolated or internally tied?

The NC terminal is explicitly marked "Not Connected" in Table 1 of the datasheet and has no internal bond wire or silicon connection. It is a mechanical placeholder with no electrical function and must remain unconnected in PCB layout and assembly to avoid unintended parasitic coupling or thermal interference.

How does soft recovery (Sfactor) impact EMI in PDP applications?

A soft recovery factor ≥0.3 means reverse current decay is gradual rather than abrupt, reducing di/dt-induced voltage spikes across stray inductance. In PDP energy recovery, this directly lowers radiated EMI and prevents false triggering of gate drivers in adjacent sustain half-bridges, improving system noise immunity and reliability.

Can STTH10R04G replace standard FR-type rectifiers in existing designs?

Yes, but only if the design operates below 400 V and benefits from faster switching. STTH10R04G's 15 ns trr and lower Qrr reduce switching losses versus FR107 (500 ns trr), but its higher cost and D²PAK footprint require layout revision. Thermal performance improves significantly due to lower Rth(j-c), but VF is comparable-verify conduction loss trade-offs at target current and temperature.