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

STMicroelectronics STTH2R02AY

Name: STTH2R02AY
Brand: STMicroelectronics
SKU: STTH2R02AY
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STTH2R02AY

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: STTH2R02AY.pdf

Description:: DIODE GEN PURP 200V 2A SMA

Quantity:: RFQ Add To RFQ list

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Product details

Overview

STTH2R02AY from STMicroelectronics is an AEC-Q101-qualified 200 V, 2 A ultrafast recovery silicon rectifier diode in SMA package, featuring 0.71 V typical forward voltage at 150 °C and 15 ns typical reverse recovery time at 125 °C with 200 A/µs dI/dt, optimized for high-frequency DC/DC converters and automotive injection systems.

For engineers reviewing the STTH2R02AY datasheet, STTH2R02AY pinout, STTH2R02AY application, or STTH2R02AY equivalent, key selection criteria include conduction loss (0.64×IF(AV) + 0.09×IF²(RMS)), junction-to-lead thermal resistance (28 °C/W), and high-temperature reverse leakage (<25 µA at 125 °C), critical for under-hood automotive power stages.

Technical Context

This planar Pt-doped ultrafast diode delivers best-in-class VF/QRR trade-off across -40 °C to +175 °C operating range, enabled by low minority-carrier lifetime control and optimized carrier recombination. Its 15 ns trr (typ.) at 125 °C and 160 V VR ensures minimal switching loss in hard-switched 100–500 kHz topologies.

The device supports surge current up to 62 A (10 ms sine half-wave) and operates with 175 °C maximum junction temperature, enabling compact thermal design in space-constrained automotive modules where lead-free soldering and PPAP compliance are mandatory.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	200 V - blocks reverse voltage in automotive 24 V systems with 2× safety margin against load dump transients
IF(AV)	2 A - continuous forward current rating at TL = 119 °C, suitable for medium-power LED drivers and ECU auxiliary rails
VF(typ.)	0.71 V @ Tj = 150 °C, IF = 2 A - enables <1.4 W conduction loss at full load, reducing heatsink requirements
trr(typ.)	15 ns @ Tj = 125 °C, dIF/dt = −100 A/µs, VR = 30 V - minimizes reverse recovery charge (QRR) and associated switching loss in high-frequency SMPS
Tj(max.)	+175 °C - supports operation in engine bay environments without derating below 150 °C ambient
Rth(j-l)	28 °C/W - defines thermal path efficiency from junction to PCB copper pad; enables direct thermal coupling to 1.4 cm² copper area
IRM	3.5 A @ Tj = 125 °C, dIF/dt = −200 A/µs - peak reverse recovery current determines snubber sizing and EMI filter stress

Pinout & Package

Packaged in SMA (DO-214AC), a surface-mount plastic case with two leads: cathode band marked on body, anode and cathode terminals electrically isolated per UL94 V0 epoxy.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to input rail in buck/flyback secondary or battery positive in reverse polarity protection
Cathode	Forward current exit / reverse blocking terminal	Marked with band; ties to ground or output node; sustains 200 V reverse bias during off-state

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive use including temperature cycling, mechanical shock, and humidity testing per JESD47
ECOPACK2 compliant	Halogen-free, RoHS-compliant packaging meeting EU Directive 2011/65/EU and ELV requirements
PPAP capable	Full production part approval process documentation available for Tier-1 automotive supply chain integration
Low QRR at high Tj	Reverse recovery charge remains stable up to 125 °C, preserving efficiency in hot under-hood locations
Negligible switching losses	trr ≤ 30 ns (max) and IRM ≤ 3.5 A minimize energy dissipation during turn-off transitions

Applications

DC/DC Converter

Reverse Polarity Protection

Use Scenario: 24 V to 5 V/3.3 V step-down converter in automotive body control module (BCM).

IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology.

Use Value: 15 ns trr and 0.71 V VF reduce total power loss by >18% vs. standard fast recovery diodes at 250 kHz switching frequency.

Use Scenario: Input protection circuit for infotainment head unit powered from vehicle battery.

IC Role / Device Role / Timing Role: Series-connected anode-to-battery+ configuration blocking reverse connection.

Use Value: 200 V VRRM withstands ISO 7637-2 pulse 5a (load dump), while 175 °C Tj(max) ensures reliability during prolonged cranking events.

LED Lighting

Injection System

Use Scenario: Constant-current driver for exterior LED headlamp arrays in adaptive front-lighting systems (AFS).

IC Role / Device Role / Timing Role: Freewheeling diode in boost converter feeding LED string.

Use Value: Low VF minimizes conduction loss at 2 A average current, maintaining >92% efficiency over −40 °C to +105 °C ambient range.

Use Scenario: High-side switch clamp and freewheel path in 12 V gasoline direct injection (GDI) solenoid driver.

IC Role / Device Role / Timing Role: Snubber diode absorbing inductive kickback from injector coil.

Use Value: 62 A IFSM rating handles repetitive 50 A transient spikes; 23 ns trr (typ.) limits voltage overshoot to <250 V during turn-off.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MUR220SFT1G	200 V, 2 A; trr = 35 ns (typ.) at 25 °C; VF = 0.92 V (typ.) at 25 °C; not AEC-Q101 qualified	Rated for industrial/commercial use only; lacks PPAP support and high-Tj QRR characterization	Acceptable for non-automotive 24 V supplies where cost sensitivity outweighs thermal performance
Vishay VS-2EY20-M3/54	200 V, 2 A; trr = 25 ns (typ.) at 25 °C; VF = 0.87 V (typ.) at 25 °C; AEC-Q101 qualified but no published 125 °C trr data	Limited high-temperature dynamic characterization; no ECOPACK2 or PPAP documentation publicly available	Suitable for automotive applications requiring AEC-Q101 but where 125 °C switching performance is not mission-critical

Compared with MUR220SFT1G and VS-2EY20-M3/54, STTH2R02AY uniquely combines AEC-Q101 qualification, verified 15 ns trr at 125 °C, PPAP readiness, and ECOPACK2 compliance-making it the only option qualified for high-reliability, thermally demanding automotive power stages.

Availability

STTH2R02AY is available at Aetrix Electronics and suitable for automotive DC/DC converters, reverse polarity protection circuits, and LED lighting drivers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STTH2R02AY 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 designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.

The STTH ultrafast diode product line targets high-efficiency, high-reliability power conversion in automotive and industrial environments, emphasizing low-loss switching, high-temperature robustness, and AEC-Q101 compliance.

FAQ

What is the maximum allowable junction temperature for continuous operation?

The STTH2R02AY has a maximum operating junction temperature of +175 °C, validated across its full rated current range and reverse voltage conditions. This rating is supported by thermal characterization in DS13660, including Rth(j-l) = 28 °C/W and derating curves showing sustained operation at 150 °C ambient with appropriate PCB copper area.

Is STTH2R02AY compatible with lead-free reflow soldering processes?

Yes, the STTH2R02AY in SMA package is qualified for lead-free reflow soldering per JEDEC J-STD-020, with peak reflow temperature up to 260 °C. The UL94 V0 epoxy housing and internal metallization are designed to withstand multiple thermal cycles without delamination or parameter shift.

Does STTH2R02AY require a heatsink in typical automotive applications?

No external heatsink is required when mounted on ≥1.4 cm² of 70 µm thick copper per lead, as shown in Figure 10 of DS13660. At 2 A average current and 175 °C max junction temperature, the calculated junction-to-ambient thermal resistance is ~4.5 °C/W under those conditions, enabling self-cooled operation in most BCM and lighting modules.

How does STTH2R02AY's reverse recovery performance compare at elevated temperature?

Unlike standard fast diodes, STTH2R02AY maintains trr ≤ 20 ns (max) and QRR stability up to 125 °C, as confirmed in Figures 6 and 8 of DS13660. Its Pt-doped planar structure minimizes minority-carrier lifetime drift with temperature, ensuring consistent switching behavior in hot under-hood locations.

STTH2R02AY Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: ECOPACK®2

Package/Case:: DO-214AC, SMA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

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

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 1.04 V @ 2 A

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

Reverse Recovery Time (trr):: 30 ns

Current - Reverse Leakage @ Vr:: 2.5 µA @ 200 V

Capacitance @ Vr, F:: -

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AC (SMA)

Operating Temperature - Junction:: 175°C

STTH2R02AY FAQ

1.How can I place an order for STTH2R02AY through Aetrix?

Please submit a Request for Quotation (RFQ) for STTH2R02AY 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 STTH2R02AY reliable?

The price and inventory of STTH2R02AY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH2R02AY is usually 5 days.

3.What payment methods are accepted for STTH2R02AY?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH2R02AY transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STTH2R02AY?

STTH2R02AY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STTH2R02AY 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 STTH2R02AY?

For technical support, including STTH2R02AY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH2R02AY requirements.

6.How does Aetrix verify that STTH2R02AY is sourced from the original manufacturer or authorized distributors?

All STTH2R02AY 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 STTH2R02AY meets industry standards.

7.What is the process for return or replacement of STTH2R02AY?

All STTH2R02AY units undergo pre-shipment inspection (PSI). If there is an issue with STTH2R02AY, 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 STTH2R02AY part is unused and in its original packaging.

Return procedure for STTH2R02AY:

1.Submit a request within 90 days.

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

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