STMicroelectronics STTH10R04B

Overview

STTH10R04 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 at 10 A, 125 °C) and high surge capability (100 A, 10 ms).

For engineers reviewing the STTH10R04 datasheet, STTH10R04 pinout, STTH10R04 application, or STTH10R04 equivalent, key selection criteria include ultrafast trr performance under high dIF/dt conditions, thermal robustness up to 175 °C junction temperature, soft recovery behavior (Sfactor = 0.3), and compatibility with high-efficiency PDP power architectures requiring low leakage (<10 µA at 25 °C) and stable VF across temperature.

Technical Context

This device employs a platinum-doped silicon epitaxial structure optimized for ultrafast carrier recombination, enabling 15 ns typical reverse recovery time at IF = 0.5 A with 0.25 A reverse recovery current. Its soft recovery characteristic (Sfactor = 0.3) minimizes EMI during switching transitions in resonant energy recovery blocks.

The D²PAK package provides 3.5 °C/W junction-to-case thermal resistance and supports direct heatsinking via the exposed cathode tab. Designed specifically for PDP clamping, it balances low VF (1.15 V typ. @ 10 A, 125 °C) against fast trr-unlike standard fast recovery diodes where either parameter dominates.

Key Specifications

Pinout & Package

The STTH10R04 is housed in a surface-mount D²PAK (TO-263) package with an exposed cathode metal tab for thermal and electrical connection. The package features three terminals: Anode (A), Cathode (K), and NC (No Connect) - confirmed per ST's official mechanical drawing (DocID13971 Rev 2, Fig.13).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH12R06D and MUR1040CT, STTH10R04 uniquely delivers the lowest trr/VF tradeoff (15 ns / 1.15 V) with documented softness (Sfactor = 0.3), making it the preferred choice for EMI-constrained, thermally dense PDP energy recovery where timing precision and thermal headroom are critical.

Availability

STTH10R04 is available at Aetrix Electronics and suitable for plasma display panel (PDP) power modules, industrial DC-DC snubbers, and medical imaging high-voltage supplies requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for STTH10R04 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, microcontroller, and sensor solutions for automotive, industrial, and consumer markets.

The STTH series targets high-efficiency power conversion in display and industrial power systems, emphasizing ultrafast recovery, thermal resilience, and EMI-controlled switching behavior for energy recovery topologies.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STTH10R04 has a maximum junction temperature of 175 °C and a junction-to-case thermal resistance of 3.5 °C/W. For continuous 10 A peak forward current with 1.15 V forward drop, power dissipation is ~11.5 W. To maintain Tj ≤ 175 °C, the case temperature must not exceed 135 °C - verified per absolute ratings table (TC = 135 °C at IF(peak) = 10 A).

Is the NC pin internally connected or should it be left floating?

The NC terminal is explicitly designated as "No Connect" in ST's mechanical drawing and datasheet (Table 1, DocID13971 Rev 2). It is not internally bonded and must remain unconnected in PCB layout and assembly - grounding or routing to it may compromise thermal performance or cause unintended parasitic coupling.

Does STTH10R04 support synchronous rectification?

No - STTH10R04 is a unidirectional, passive silicon power rectifier with no gate control or bidirectional conduction capability. It cannot be used for synchronous rectification, which requires actively switched MOSFETs with gate drive signals. Its role is strictly clamping and energy recovery in hard-switched topologies.

How does soft recovery (Sfactor = 0.3) impact EMI in PDP applications?

A softness factor of 0.3 indicates gradual current decay during reverse recovery, reducing di/dt-induced voltage spikes and high-frequency ringing. In PDP energy recovery circuits operating at 100–200 kHz, this lowers broadband EMI by up to 12 dB compared to standard fast recovery diodes, easing compliance with CISPR-22 Class B emissions limits.