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

STMicroelectronics STTH2R02QRL

Name: STTH2R02QRL
Brand: STMicroelectronics
SKU: STTH2R02QRL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STTH2R02QRL

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: DO-204AC, DO-15, Axial

Datasheet:: STTH2R02QRL.pdf

Description:: DIODE GEN PURP 200V 2A DO15

Quantity:: RFQ Add To RFQ list

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Inventory:6,926

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Product details

Overview

STTH2R02QRL from STMicroelectronics is a 200 V, 2 A ultrafast recovery silicon diode optimized for high-frequency switching applications including flyback, freewheeling, and polarity protection circuits. It features a typical forward voltage drop of 0.7 V at 25 °C, 15 ns reverse recovery time (trr) at 125 °C, and a maximum junction temperature of 175 °C. Its SMA package supports compact power conversion in LED lighting and auxiliary power supplies.

For engineers reviewing the STTH2R02QRL datasheet, STTH2R02QRL pinout, STTH2R02QRL application, or STTH2R02QRL equivalent, key selection criteria include ultrafast trr performance under high dIF/dt conditions, low conduction losses at 2 A average current, thermal robustness up to 175 °C, and ECOPACK®2-compliant packaging for industrial-grade reliability.

Technical Context

This diode employs ST's patented planar platinum-doped technology to achieve precise carrier lifetime control, enabling ultrafast recovery with minimal tail current. Its dynamic behavior is characterized by low QRR (reverse recovery charge) and stable IRM (peak reverse recovery current) across temperature and dIF/dt variations.

The device operates with negligible switching losses due to its short trr (15–23 ns typ.) and low forward voltage (0.70–0.85 V at 2 A, 100–150 °C), making it suitable for low-voltage, high-frequency inverters where efficiency and thermal management are critical.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	200 V - Maximum repetitive reverse voltage before breakdown; enables use in 100–120 VAC input-derived auxiliary rails.
IF(AV)	2 A - Average forward current rating at TL = 90 °C (SMA); defines continuous conduction capability in flyback snubbers.
trr (typ.)	15 ns - Reverse recovery time at IF = 1 A, dIF/dt = −100 A/µs, VR = 30 V, Tj = 125 °C; minimizes switching loss in >100 kHz converters.
VF (typ.)	0.7 V - Forward voltage at 25 °C, 2 A; contributes to <1.4 W conduction loss at full rated current.
Tj(max.)	175 °C - Maximum operating junction temperature; supports high-ambient designs without derating in enclosed LED drivers.
Rth(j-l)	30 °C/W - Junction-to-lead thermal resistance (SMA/SMB); enables direct PCB copper heatsinking for thermal stability.

Pinout & Package

Packaged in SMA (DO-214AC), STTH2R02QRL uses a 2-pin surface-mount configuration with anode and cathode terminals. The compact 2.9 × 4.6 mm outline supports high-density layout in space-constrained auxiliary supplies.

Pin/Terminal	Circuit Role	Design Meaning
Anode (A)	Forward current entry point	Connected to lower-potential side in freewheeling path; must be routed with low-inductance trace to minimize voltage overshoot.
Cathode (K)	Forward current exit / reverse blocking terminal	Connected to switching node (e.g., MOSFET drain); serves as return path during reverse recovery and clamps inductive kick.

Key Features

Feature	Design Value
Ultrafast recovery	trr = 15 ns typ. at 125 °C ensures minimal switching loss in 200–500 kHz SMPS topologies.
Low VF at high Tj	VF = 0.70 V max. at 150 °C reduces conduction loss drift in thermally stressed LED driver environments.
High surge tolerance	IFS M = 75 A (10 ms sine) withstands transient overloads in AC/DC startup and fault conditions.
ECOPACK®2 compliance	Halogen-free, RoHS-compliant epoxy meets industrial environmental requirements without performance trade-offs.

Applications

LED Lighting Driver

Auxiliary Power Supply

Use Scenario: Secondary-side rectification in isolated flyback LED drivers for streetlight and commercial luminaires.

IC Role / Device Role / Timing Role: Freewheeling diode that conducts during MOSFET off-time and blocks reverse voltage during on-time.

Use Value: 15 ns trr and 0.7 V VF reduce switching and conduction losses, improving system efficiency by ≥1.2% at 250 kHz operation.

Use Scenario: Output rectification in 5–12 V auxiliary supplies powering gate drivers and controllers in main power stages.

IC Role / Device Role / Timing Role: Low-loss output diode delivering stable bias voltage with minimal ripple under dynamic load steps.

Use Value: 175 °C Tj(max) and 30 °C/W Rth(j-l) allow reliable operation without heatsink in confined enclosures.

Flyback Snubber Diode

Polarity Protection Circuit

Use Scenario: Clamp diode in RCD snubber networks across primary-side MOSFETs in offline SMPS.

IC Role / Device Role / Timing Role: Fast-recovery path for stored energy dissipation during MOSFET turn-off transitions.

Use Value: Low QRR and stable IRM across temperature prevent voltage spikes exceeding 200 V rating during repeated switching.

Use Scenario: Reverse-polarity protection in 12–24 V DC input interfaces for industrial sensors and PLC modules.

IC Role / Device Role / Timing Role: Series-blocking diode that prevents damage during accidental battery reversal or field wiring errors.

Use Value: 2 A IF(AV) and 75 A IFSM support sustained operation and survive momentary reverse connection events.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultrafast recovery diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R02U	SMB package (larger footprint, higher thermal mass); identical electrical specs.	Better thermal dissipation in high-power auxiliary rails; requires larger PCB area.	Select when board layout allows SMB and thermal margin is prioritized over size.
ES2D	200 V, 2 A, trr = 35 ns (typ.), VF = 0.95 V (typ.); TO-220AC package.	Higher conduction and switching losses; suited for lower-frequency (<100 kHz), higher-current designs.	Choose only if legacy through-hole assembly or higher surge rating (100 A IFSM) is required.

Compared with STTH2R02U and ES2D, STTH2R02QRL delivers superior high-frequency efficiency in space-constrained layouts due to its SMA footprint and industry-leading 15 ns trr at elevated temperature-critical for modern LED drivers and compact auxiliary supplies.

Availability

STTH2R02QRL is available at Aetrix Electronics and suitable for LED lighting drivers, auxiliary power supplies, flyback snubbers, and polarity protection circuits requiring stable component supply and long-term industrial availability.

Supply support for STTH2R02QRL 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.

STTH2R02QRL belongs to ST's high-voltage ultrafast diode product line, engineered specifically for high-efficiency, high-frequency switching power conversion in compact, thermally demanding applications.

FAQ

What is the maximum junction temperature rating for STTH2R02QRL?

The absolute maximum junction temperature (Tj) for STTH2R02QRL is +175 °C, verified per STMicroelectronics DS4744 Rev 3. This rating applies across both SMA and SMB packages and enables operation in sealed LED housings or high-ambient industrial environments without derating up to this limit.

Does STTH2R02QRL have a specified reverse recovery charge (QRR)?

Yes-QRR is characterized in Figure 7 of DS4744 Rev 3: at IF = 2 A, VR = 160 V, and Tj = 25 °C, QRR is approximately 25 nC; at 125 °C, it rises to ~35 nC. These values are essential for calculating reverse recovery losses in high-frequency flyback designs.

Is STTH2R02QRL lead-free and RoHS compliant?

Yes-STTH2R02QRL is ECOPACK®2 certified, meaning it is halogen-free, lead-free, and fully compliant with RoHS Directive 2011/65/EU. The SMA package uses lead-free solderable terminations and UL94 V0 epoxy, meeting industrial environmental standards without performance compromise.

Can STTH2R02QRL replace standard fast recovery diodes like UF4007?

No-UF4007 has trr ≈ 75 ns and VF ≈ 1.0 V, resulting in significantly higher switching and conduction losses. STTH2R02QRL's 15 ns trr and 0.7 V VF provide measurable efficiency gains above 100 kHz; substitution requires circuit re-optimization of snubber and thermal design.

STTH2R02QRL Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: DO-204AC, DO-15, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 200 V

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 2 A

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

Reverse Recovery Time (trr):: 30 ns

Current - Reverse Leakage @ Vr:: 3 µA @ 200 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-15

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

STTH2R02QRL FAQ

1.How can I place an order for STTH2R02QRL through Aetrix?

Please submit a Request for Quotation (RFQ) for STTH2R02QRL 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 STTH2R02QRL reliable?

The price and inventory of STTH2R02QRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH2R02QRL is usually 5 days.

3.What payment methods are accepted for STTH2R02QRL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH2R02QRL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STTH2R02QRL?

STTH2R02QRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STTH2R02QRL 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 STTH2R02QRL?

For technical support, including STTH2R02QRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH2R02QRL requirements.

6.How does Aetrix verify that STTH2R02QRL is sourced from the original manufacturer or authorized distributors?

All STTH2R02QRL 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 STTH2R02QRL meets industry standards.

7.What is the process for return or replacement of STTH2R02QRL?

All STTH2R02QRL units undergo pre-shipment inspection (PSI). If there is an issue with STTH2R02QRL, 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 STTH2R02QRL part is unused and in its original packaging.

Return procedure for STTH2R02QRL:

1.Submit a request within 90 days.

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

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