STMicroelectronics STTH15RQ06GY-TR

Overview

STTH15RQ06GY-TR from STMicroelectronics is an AEC-Q101 qualified ultrafast high-voltage rectifier diode in D²PAK package, rated for 600 V repetitive peak reverse voltage, 15 A average forward current, and 25 ns maximum reverse recovery time at 25 °C. It delivers soft recovery behavior, low thermal resistance (1.5 °C/W junction-to-case), and operates up to 175 °C junction temperature-designed for LLC full-bridge secondary rectification in automotive and industrial power supplies.

For engineers reviewing the STTH15RQ06GY-TR datasheet, STTH15RQ06GY-TR pinout, STTH15RQ06GY-TR application, or STTH15RQ06GY-TR equivalent, key selection criteria include V_RRM stability across -40 °C to +175 °C, low I_R (<400 µA at 150 °C), conduction loss modeling via P = 1.05 × I_F(AV) + 0.053 × I_F(RMS)², and creepage compliance (5.38 mm anode–cathode with top coating) for high-voltage safety-critical designs.

Technical Context

This diode employs a planar epitaxial silicon structure optimized for ultrafast switching with soft reverse recovery (S-factor >1.0 at 125 °C), minimizing EMI and voltage overshoot during turn-off in hard-switched topologies. Its dynamic parameters-including Q_RR = 250 nC and I_RM = 6–8 A under dI_F/dt = −200 A/µs-are characterized across T_j = −40 °C to +175 °C to support robust design margining in automotive PFC and UPS systems.

The device supports three package variants (D²PAK, TO-220AC, DO-247), but STTH15RQ06GY-TR specifically uses the D²PAK variant with 1.48 g mass, tape-and-reel packaging (1000 pcs), and ECOPACK®2 compliance. Thermal performance is defined by R_th(j–c) = 1.5 °C/W, enabling high-power density layouts when mounted on ≥30 cm² copper area per Figure 12.

Key Specifications

Pinout & Package

D²PAK (TO-263) package: surface-mount, single-anode/single-cathode configuration with exposed metal tab (cathode-connected) for thermal and electrical grounding. Dimensions per Table 6: 9.35 mm × 10.40 mm × 15.85 mm (L × W × H), 2.54 mm lead pitch, 4.88–5.28 mm body width (E1), and 1.27–1.40 mm lead length (L1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH15RQ06GY-TR, STTH15R06DJ-TR trades 10 ns slower recovery and 0.1 V higher V_F for lower unit cost, while IXYS MUR1560CT offers dual-diode integration but sacrifices automotive reliability and softness-making STTH15RQ06GY-TR the sole choice for AEC-Q101–mandated, high-efficiency LLC rectification.

Availability

STTH15RQ06GY-TR is available at Aetrix Electronics and suitable for automotive on-board chargers, industrial uninterruptible power supplies, and HVAC inverter PFC stages requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for ISO/TS 16949 production programs.

Supply support for STTH15RQ06GY-TR 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 discrete devices, analog ICs, and MEMS sensors for automotive, industrial, and consumer markets.

This device belongs to ST's Automotive Turbo 2 ultrafast high-voltage rectifier product line, engineered specifically for high-frequency LLC and phase-shifted full-bridge topologies in electric vehicle charging, renewable energy inverters, and high-efficiency server PSUs.

FAQ

What is the maximum allowable case temperature for continuous operation?

The device is rated for I_F(AV) = 15 A at T_C = 115 °C with δ = 0.5 square wave, per Table 1. Operation above 115 °C case temperature requires derating per Figure 1's P_F(AV) vs. I_F(AV) curves; sustained T_C > 125 °C risks exceeding 175 °C junction limit unless thermal resistance is reduced below 1.5 °C/W.

Does the D²PAK package require thermal vias under the tab?

Yes. To achieve the specified R_th(j–c) = 1.5 °C/W, ST recommends ≥6 thermal vias (0.3 mm diameter, 0.6 mm pitch) connecting the cathode tab to an internal 30 cm² copper plane, per Figure 17 footprint guidelines. Omitting vias increases effective R_th(j–a) by >40%, risking thermal runaway at full load.

Is the STTH15RQ06GY-TR suitable for synchronous rectification replacement?

No. This is a unidirectional silicon PN junction rectifier-not a MOSFET-based synchronous rectifier. It cannot be actively controlled or gate-driven. Its role is passive high-voltage, high-speed rectification where low Q_RR and soft recovery are prioritized over ultra-low V_F at light loads.

How does the creepage distance change if the top coating is omitted?

Without top coating, the D²PAK HV variant's anode-to-cathode creepage drops from 5.38 mm (minimum, with coating) to 3.48 mm (minimum, without coating), per Table 9. This falls below IEC 60664-1 reinforced insulation requirements for 600 V DC systems, mandating conformal coating or physical barriers in safety-critical designs.