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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

STMicroelectronics STTH15RQ06D

Name: STTH15RQ06D
Brand: STMicroelectronics
SKU: STTH15RQ06D
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STTH15RQ06D

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: TO-220-2

Datasheet:: STTH15RQ06D.pdf

Description:: DIODE GEN PURP 600V 15A TO220AC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STTH15RQ06D from STMicroelectronics is a 600 V, 15 A ultrafast recovery rectifier diode in TO-220AC package, optimized for high-voltage secondary rectification in LLC full-bridge topologies and PFC stages. It delivers 1.45 V max forward voltage at 150 °C, 25 ns max reverse recovery time, and 175 °C maximum junction temperature - enabling high-efficiency, thermally robust operation in air conditioning inverters and EV charging stations.

For engineers reviewing the STTH15RQ06D datasheet, STTH15RQ06D pinout, STTH15RQ06D application, or STTH15RQ06D equivalent, key selection criteria include its soft-recovery behavior (S-factor >1.0), low thermal resistance (1.5 °C/W j-c), 5.38 mm creepage distance compliance (IEC 60664-1), and ECOPACK®2 environmental certification - all critical for industrial power supply safety and reliability validation.

Technical Context

This diode employs a planar epitaxial silicon structure with tailored carrier lifetime control to achieve ultrafast trr ≤25 ns at 25 °C and ≤70 ns at 125 °C under high di/dt conditions (–200 A/µs), minimizing switching losses in resonant converters. Its soft recovery reduces EMI generation and voltage overshoot during turn-off.

The device supports high surge capability (120 A IFSM, 10 ms sine) and operates up to 175 °C junction temperature, enabled by low Rth(j-c) = 1.5 °C/W and optimized metallization. Reverse leakage remains ≤400 µA at 150 °C, ensuring stable blocking performance in high-temperature PFC boost stages.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	600 V - Withstands repetitive peak reverse voltage up to 600 V, suitable for 400 V DC bus applications with safety margin.
IF(AV)	15 A - Average forward current rating at TC = 115 °C, defining continuous conduction capability in rectifier legs.
VF (max)	1.45 V at IF = 15 A, Tj = 150 °C - Directly determines conduction loss (P ≈ 1.05×IF(AV) + 0.053×IF²(RMS)) in thermal design.
trr (max)	25 ns at IF = 0.5 A, IR = 1 A, Irr = 0.25 A, Tj = 25 °C - Enables high-frequency switching (>100 kHz) with minimal reverse recovery loss.
Rth(j-c)	1.5 °C/W - Junction-to-case thermal resistance enables efficient heatsink coupling; limits ΔTj to 22.5 °C at 15 W dissipation.
IR (max)	400 µA at VR = VRRM, Tj = 150 °C - Low leakage preserves efficiency and stability in high-temperature PFC hold-up stages.
Tj (max)	175 °C - Extended junction temperature rating allows operation in compact, high-power-density industrial enclosures without derating.

Pinout & Package

TO-220AC package: single-ended, isolated tab (cathode-connected), 3-pin outline with mounting hole. Thermal path optimized via metal tab contact to heatsink; recommended torque 0.55 N·m (max 0.70 N·m).

Pin/Terminal	Circuit Role	Design Meaning
Anode (Pin 1)	Forward current entry terminal	Connected to AC-side node in bridge rectifiers or switch-node in synchronous clamp circuits.
Cathode (Pin 2)	Forward current exit / reverse-blocking terminal	Electrically tied to metal tab; must be isolated from chassis unless referenced to system ground.
Tab (Cathode)	Thermal and electrical cathode connection	Provides primary heat conduction path; requires insulating washer if mounted to grounded heatsink.

Key Features

Feature	Design Value
Ultrafast soft recovery	trr ≤25 ns with S-factor >1.0 - Reduces EMI and voltage spikes during turn-off in resonant LLC converters.
High-temperature operation	Tj(max) = 175 °C - Enables use in sealed, fanless industrial enclosures without forced cooling derating.
Low thermal resistance	Rth(j-c) = 1.5 °C/W - Supports ≥15 W continuous dissipation with standard TO-220 heatsinks (e.g., 10 K/W).
ECOPACK®2 compliance	Halogen-free, RoHS-compliant epoxy - Meets EU environmental directives for industrial and automotive-adjacent equipment.
High creepage margin	5.38 mm anode-to-cathode clearance (with coating) - Exceeds IEC 60664-1 requirements for 600 V working voltage insulation.

Applications

Industrial UPS Systems

EV Charging Stations

Use Scenario: DC-link rectification and freewheeling in three-phase IGBT-based UPS inverters operating at 400–600 V DC bus.

IC Role / Device Role / Timing Role: High-voltage output rectifier and clamping diode in active clamp forward or phase-shifted full-bridge topologies.

Use Value: 25 ns trr and soft recovery minimize switching loss and snubber stress, improving system efficiency by ≥1.2% at 50 kHz switching frequency.

Use Scenario: Secondary-side rectification in 3.3 kW–22 kW AC/DC OBC modules for Level 2 and DC fast-charging systems.

IC Role / Device Role / Timing Role: Ultrafast freewheeling diode in synchronous rectification circuits and PFC boost diodes in two-stage architectures.

Use Value: 175 °C Tj rating and 1.45 V VF(max) at 150 °C reduce thermal runaway risk and conduction loss in high-ambient-temperature vehicle environments.

Air Conditioning Inverters

Server Power Supplies

Use Scenario: Output rectification in high-frequency resonant LLC converters powering variable-speed compressor drives.

IC Role / Device Role / Timing Role: Primary secondary-side rectifier handling 15 A average current at 100–300 kHz switching frequencies.

Use Value: Low QRR (250 nC) and controlled di/dt response suppress ringing and improve transient response during load steps.

Use Scenario: Hold-up and OR-ing diode in redundant 12 V/48 V server PSUs requiring high reliability and low forward drop.

IC Role / Device Role / Timing Role: Freewheeling and redundancy diode in multi-phase buck-derived VRMs and auxiliary bias supplies.

Use Value: 120 A IFSM surge rating ensures survival during hot-swap events and inrush transients without derating.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH16R06DJ	D²PAK HV package; identical VRRM/IF(AV)/trr specs but 5.38 mm creepage certified; Rth(j-c) = 1.4 °C/W.	Better suited for surface-mount designs requiring high creepage and automated assembly.	Select when PCB space constraints favor SMT or when IEC 60664-1 creepage compliance must be verified with top coating.
IXYS MUR1560CT	TO-220AB dual common-cathode configuration; 600 V/15 A per diode; trr = 35 ns (typ); VF = 1.7 V (max) at 150 °C.	Offers dual-diode integration for full-wave rectification but higher VF increases conduction loss.	Choose only when dual-diode topology eliminates external wiring; accept ~0.25 V higher VF penalty for layout simplification.

Compared with STTH15RQ06D, STTH16R06DJ provides superior thermal and creepage performance in SMT form, while IXYS MUR1560CT trades higher VF and slower trr for dual-diode integration - making STTH15RQ06D optimal for discrete, high-efficiency TO-220AC rectifier positions demanding soft recovery and thermal headroom.

Availability

STTH15RQ06D is available at Aetrix Electronics and suitable for industrial UPS systems, EV charging stations, and air conditioning inverters requiring stable component supply across extended production lifecycles.

Supply support for STTH15RQ06D 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.

STTH15RQ06D belongs to ST's Turbo 2 ultrafast high-voltage rectifier family, engineered specifically for high-frequency resonant topologies (LLC, phase-shifted full-bridge) where low trr, soft recovery, and thermal robustness are critical.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STTH15RQ06D is rated for IF(AV) = 15 A at TC = 115 °C, meaning the case (tab) temperature must not exceed 115 °C under continuous 15 A DC forward current. At higher ambient temperatures or with reduced heatsinking, derating is required per Figure 1 and Figure 2 in DS12162. Operation beyond 115 °C case temperature risks exceeding the 175 °C junction limit and accelerated degradation.

Is the TO-220AC tab electrically isolated from the leads?

No - the metal tab of the STTH15RQ06D in TO-220AC package is internally connected to the cathode (Pin 2). It is not electrically isolated and must be treated as a live terminal. When mounting to a grounded heatsink, a mica or polymer insulating washer and shoulder washer are mandatory to prevent short circuits.

How does soft recovery behavior impact EMI in LLC converters?

Soft recovery (S-factor >1.0) ensures gradual carrier recombination during turn-off, suppressing high di/dt-induced voltage spikes and oscillatory ringing at the switch node. This directly reduces broadband conducted EMI (30–300 MHz) and lowers filter component stress in LLC converters operating above 100 kHz, easing EMC certification.

Can STTH15RQ06D replace STTH15R06 in existing designs?

Yes - STTH15RQ06D is a direct upgrade over STTH15R06, offering identical VRRM, IF(AV), and VF ratings but improved trr (25 ns vs. 35 ns typical), lower QRR (250 nC vs. 350 nC), and enhanced softness factor. No layout or thermal redesign is needed, and system efficiency improves by ~0.8% in high-frequency PFC stages.

STTH15RQ06D Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: ECOPACK®

Package/Case:: TO-220-2

Packaging:: Tube

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 600 V

Current - Average Rectified (Io):: 15A

Voltage - Forward (Vf) (Max) @ If:: 2.95 V @ 15 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 50 ns

Current - Reverse Leakage @ Vr:: 20 µA @ 600 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220AC

Operating Temperature - Junction:: 175°C (Max)

STTH15RQ06D FAQ

1.How can I place an order for STTH15RQ06D through Aetrix?

Please submit a Request for Quotation (RFQ) for STTH15RQ06D on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STTH15RQ06D reliable?

The price and inventory of STTH15RQ06D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH15RQ06D is usually 5 days.

3.What payment methods are accepted for STTH15RQ06D?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH15RQ06D transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STTH15RQ06D?

STTH15RQ06D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STTH15RQ06D order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STTH15RQ06D?

For technical support, including STTH15RQ06D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH15RQ06D requirements.

6.How does Aetrix verify that STTH15RQ06D is sourced from the original manufacturer or authorized distributors?

All STTH15RQ06D products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STTH15RQ06D meets industry standards.

7.What is the process for return or replacement of STTH15RQ06D?

All STTH15RQ06D units undergo pre-shipment inspection (PSI). If there is an issue with STTH15RQ06D, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STTH15RQ06D part is unused and in its original packaging.

Return procedure for STTH15RQ06D:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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