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

STMicroelectronics STTH1R06U

Name: STTH1R06U
Brand: STMicroelectronics
SKU: STTH1R06U
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STTH1R06U

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: STTH1R06U.pdf

Description:: DIODE GEN PURP 600V 1A SMB

Quantity:: RFQ Add To RFQ list

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Inventory:10,192

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Product details

Overview

STTH1R06U from STMicroelectronics is an ultrafast high-voltage silicon rectifier diode in SMB package, rated for 600 V repetitive peak reverse voltage, 1 A average forward current, and 25 ns maximum reverse recovery time. It serves as a boost diode in active PFC circuits and as a freewheeling diode in switch-mode power supplies operating up to 175 °C junction temperature.

For engineers reviewing the STTH1R06U datasheet, STTH1R06U pinout, STTH1R06U application, or STTH1R06U equivalent, key selection criteria include ultrafast trr performance, low thermal resistance (25 °C/W junction-to-lead), low IR leakage (<75 µA at 150 °C), and SMB footprint compatibility with high-density PCB layouts.

Technical Context

The STTH1R06U employs ST's Turbo 2 technology to achieve soft-recovery characteristics and reduced switching losses in high-frequency power conversion. Its dynamic behavior is characterized by controlled dIF/dt-dependent trr (25–45 ns) and low peak reverse recovery current (IRM ≤ 7 A at dIF/dt = 500 A/µs).

Thermal design is supported by low Rth(j-l) = 25 °C/W (SMB) and validated junction-to-ambient curves for copper pad areas ≥1 cm². Static conduction loss is modeled via P = 1.03 × IF(AV) + 0.27 × IF(RMS)², with VF = 1.0 V (typ) at 150 °C and 1 A.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	600 V - Withstands peak reverse voltages in 400 V AC input PFC stages without breakdown.
IF(AV)	1 A at TC = 135 °C, δ = 0.5 - Supports continuous conduction mode operation in compact 1 A output SMPS designs.
trr (max)	25 ns - Enables efficient operation at switching frequencies up to ~200 kHz with minimal turn-off loss.
VF (typ)	1.0 V at TJ = 150 °C, IF = 1 A - Reduces forward conduction loss versus standard fast diodes, improving efficiency in high-temp environments.
Rth(j-l)	25 °C/W - Allows direct thermal coupling to PCB copper, enabling heatsink-free operation in space-constrained applications.
IR (max)	75 µA at TJ = 150 °C, VR = VRRM - Ensures minimal leakage-induced power loss in standby and light-load conditions.

Pinout & Package

SMB (Surface-Mount Small Outline Diode) package: molded epoxy body, cathode band marked, lead-free per ECOPACK®, RoHS-compliant, footprint per Figure 17 (E = 5.1–5.6 mm, E1 = 4.05–4.60 mm, D = 3.30–3.95 mm).

Pin/Terminal	Circuit Role	Design Meaning
Anode (A)	Forward current entry point	Connected to switching node (e.g., MOSFET drain in boost topology); must withstand surge currents up to 20 A (non-repetitive).
Cathode (K)	Forward current exit / reverse blocking terminal	Connected to output rail; marked by band; carries full output current and blocks 600 V during off-state with <75 µA leakage.

Key Features

Feature	Design Value
Ultrafast switching	trr ≤ 25 ns ensures minimal overlap loss in hard-switched topologies like boost PFC and flyback snubbers.
Low reverse recovery current	IRM ≤ 7 A at dIF/dt = 500 A/µs reduces EMI generation and stress on gate drivers of companion MOSFETs.
Low thermal resistance	Rth(j-l) = 25 °C/W enables reliable 1 A operation at TC = 135 °C without external heatsinking.
Soft recovery characteristic	S-factor > 3 across dIF/dt range suppresses voltage overshoot and ringing during turn-off transitions.

Applications

Active Power Factor Correction (PFC)

Switch-Mode Power Supply Output Rectification

Use Scenario: Boost-stage diode in universal-input (85–265 VAC) PFC front-end for LED drivers and industrial PSUs.

IC Role / Device Role / Timing Role: Unidirectional current path during MOSFET off-time; handles high dv/dt and rapid polarity reversal.

Use Value: 25 ns trr and soft recovery minimize switching loss and EMI, enabling >95% PFC efficiency at 100 kHz.

Use Scenario: Secondary-side freewheeling diode in 12 V/1 A isolated DC-DC converter for telecom equipment.

IC Role / Device Role / Timing Role: Provides low-loss current path during transformer reset phase; blocks reflected primary voltage spikes.

Use Value: VF = 1.0 V (150 °C) reduces conduction loss by ~15% vs. standard fast diodes, improving thermal margin at full load.

AC-DC Adapter Auxiliary Supply

Industrial Motor Drive Snubber Circuit

Use Scenario: High-voltage auxiliary winding rectifier supplying bias power to PWM controller in 65 W laptop adapter.

IC Role / Device Role / Timing Role: Rectifies 300–400 V AC-derived winding voltage; operates intermittently but must survive repeated 600 V transients.

Use Value: VRRM = 600 V and IR < 10 µA at 25 °C ensure stable startup and low no-load consumption.

Use Scenario: Clamp diode in RC snubber network across IGBT collector-emitter in 3-phase inverter drives.

IC Role / Device Role / Timing Role: Rapidly clamps voltage spikes during IGBT turn-off; absorbs energy from stray inductance.

Use Value: Low Rth(j-l) = 25 °C/W and 20 A IFSM rating allow robust transient energy handling without thermal runaway.

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
ON Semiconductor MUR1060	Same VRRM (600 V), higher IF(AV) = 1.5 A, trr = 35 ns (max), Rth(j-l) = 30 °C/W (DO-204AL)	Requires larger DO-204AL footprint; less suitable for dense SMB layouts	Select when higher average current headroom is needed and board space permits axial/DO-204AL mounting.
Vishay VS-1N6006	Identical SMB package, VRRM = 600 V, IF(AV) = 1 A, but trr = 50 ns (max), VF = 1.3 V (typ) at 25 °C	Higher conduction and switching loss; not recommended for >100 kHz PFC	Acceptable only for cost-sensitive, lower-frequency (<60 kHz) freewheeling roles where softness and speed are secondary.

Compared with MUR1060 and VS-1N6006, the STTH1R06U delivers superior high-frequency efficiency due to its 25 ns trr and 1.0 V VF at 150 °C, while maintaining SMB compatibility-making it optimal for thermally constrained, high-density PFC and SMPS designs.

Availability

STTH1R06U is available at Aetrix Electronics and suitable for active power factor correction, switch-mode power supply output rectification, AC-DC adapter auxiliary supplies, and industrial motor drive snubber circuits requiring stable component supply and consistent SMB packaging.

Supply support for STTH1R06U 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, digital, and mixed-signal ICs and discrete power devices for industrial, automotive, and consumer markets.

The STTH1R06U belongs to ST's Turbo 2 ultrafast rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion systems where low trr, soft recovery, and thermal robustness are critical.

FAQ

What is the maximum junction temperature and how does it affect reliability?

The STTH1R06U has a maximum operating junction temperature of 175 °C. This rating allows sustained operation in high-ambient environments such as enclosed power supplies or industrial enclosures. At 135 °C case temperature, it maintains full 1 A IF(AV) capability-enabling derating-free design in thermally demanding applications without forced air cooling.

Is the STTH1R06U suitable for use in automotive applications?

The STTH1R06U is not qualified to AEC-Q101 and is not specified as automotive grade. While it meets 175 °C TJ and operates reliably in harsh thermal conditions, ST explicitly states that non-automotive-grade parts should be used in automotive systems only at the user's own risk-particularly where failure could impact safety-critical functions.

How does the soft recovery characteristic reduce EMI in PFC circuits?

The STTH1R06U exhibits a soft recovery S-factor >3 across its operating dIF/dt range, meaning reverse current decay is gradual rather than abrupt. This minimizes high-frequency spectral content in the turn-off transient, reducing conducted and radiated EMI-critical for meeting EN 55022 Class B emissions limits without oversized filtering.

Can the STTH1R06U replace the STTH1R06A in the same PCB layout?

No-the STTH1R06A uses SMA package (E = 4.8–5.35 mm), while STTH1R06U uses SMB (E = 5.1–5.6 mm). Though both are surface-mount, their footprints differ: SMA requires wider pad spacing and longer leads. Direct replacement would cause solder joint stress or open circuits; redesign of the land pattern is required.

STTH1R06U Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: DO-214AA, SMB

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

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

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 1.7 V @ 1 A

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

Reverse Recovery Time (trr):: 45 ns

Current - Reverse Leakage @ Vr:: 1 µA @ 600 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMB

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

STTH1R06U FAQ

1.How can I place an order for STTH1R06U through Aetrix?

Please submit a Request for Quotation (RFQ) for STTH1R06U 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 STTH1R06U reliable?

The price and inventory of STTH1R06U are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH1R06U is usually 5 days.

3.What payment methods are accepted for STTH1R06U?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH1R06U transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STTH1R06U?

STTH1R06U orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STTH1R06U 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 STTH1R06U?

For technical support, including STTH1R06U datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH1R06U requirements.

6.How does Aetrix verify that STTH1R06U is sourced from the original manufacturer or authorized distributors?

All STTH1R06U 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 STTH1R06U meets industry standards.

7.What is the process for return or replacement of STTH1R06U?

All STTH1R06U units undergo pre-shipment inspection (PSI). If there is an issue with STTH1R06U, 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 STTH1R06U part is unused and in its original packaging.

Return procedure for STTH1R06U:

1.Submit a request within 90 days.

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

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