STMicroelectronics STTH15R06D

Overview

STTH15R06D from STMicroelectronics is an ultrafast high-voltage silicon rectifier diode in TO-220AC package, rated for 600 V repetitive peak reverse voltage and 15 A average forward current. It features 50 ns maximum reverse recovery time, 1.8 V max forward voltage at 125 °C, and 1.5 °C/W junction-to-case thermal resistance-optimized for continuous-conduction-mode PFC boost stages and hard-switching power supplies.

For engineers reviewing the STTH15R06D datasheet, STTH15R06D pinout, STTH15R06D application, or STTH15R06D equivalent, key selection criteria include reverse recovery performance under high dIF/dt (up to 200 A/µs), softness factor (0.15 typ), low conduction loss at 15 A, and thermal capability up to 175 °C junction temperature.

Technical Context

The STTH15R06D employs ST's Turbo 2 600 V technology to achieve ultrafast switching with low reverse recovery charge (220 nC typ) and controlled soft recovery (S-factor = 0.15). Its dynamic behavior is characterized under defined test conditions: IF = 15 A, dIF/dt = −200 A/µs, VR = 400 V, Tj = 125 °C.

Designed for high-efficiency AC-DC conversion, it minimizes switching losses in boost PFC circuits by limiting peak reverse recovery current (IRM = 7.5–9.0 A) and enabling stable operation across −65 °C to +175 °C storage and operating temperature ranges.

Key Specifications

Pinout & Package

TO-220AC package: insulated case, single-ended vertical mounting, screw-down terminal (M3.5), 0.4–0.6 N·m torque specification. Case serves as cathode terminal; anode and cathode leads are electrically isolated from heatsink via epoxy insulation meeting UL94 V0.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MUR1560 and VS-15EWH06, the STTH15R06D delivers balanced trade-offs: lower Q_rr than MUR1560 for reduced EMI, better thermal resistance than VS-15EWH06 for simpler heatsinking, and proven softness for ruggedness in noisy industrial environments.

Availability

STTH15R06D is available at Aetrix Electronics and suitable for server power supplies, industrial AC-DC adapters, telecom rectifiers, and EV charger auxiliary power supplies requiring stable component supply and long-term manufacturability.

Supply support for STTH15R06D 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 belongs to ST's high-voltage power diode product line, engineered specifically for energy-efficient AC-DC conversion in PFC and SMPS applications demanding ultrafast recovery, soft switching, and high thermal reliability.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STTH15R06D has a maximum junction temperature of 175 °C and a junction-to-case thermal resistance of 1.5 °C/W. With typical heatsink interface resistance of 0.5 °C/W and ambient of 70 °C, the case temperature must remain below 125 °C to maintain safe junction operation at full 15 A load.

Does STTH15R06D require a snubber circuit in hard-switching PFC applications?

No snubber is required under standard CCM PFC operation due to its soft recovery (S-factor = 0.15) and low Q_rr. However, a small RC snubber (e.g., 100 Ω + 100 pF) is recommended when dIF/dt exceeds 250 A/µs or layout parasitics induce >50 V overshoot above V_RRM.

How does the TO-220AC package differ from TO-220FPAC in thermal performance?

The TO-220AC package has R_th(j-c) = 1.5 °C/W, while TO-220FPAC (used in STTH15R06FP) is 4.0 °C/W due to its full-pack plastic isolation. TO-220AC provides superior thermal transfer but requires electrical isolation from the heatsink; TO-220FPAC simplifies mounting but demands larger heatsinks for equivalent power dissipation.

Can STTH15R06D replace STTH16R06 in existing designs?

Yes-both share identical 600 V rating, TO-220AC package, and thermal footprint. STTH15R06D has slightly lower I_F(AV) (15 A vs. 16 A) and identical t_rr/Q_rr, making it a drop-in replacement in designs operating ≤15 A average current with ≥10% margin on conduction loss.