Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

STMicroelectronics STTH3R02RL

Name: STTH3R02RL
Brand: STMicroelectronics
SKU: STTH3R02RL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: STTH3R02RL

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: STTH3R02RL.pdf

Description:: DIODE GEN PURP 200V 3A DO201AD

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,646

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

STTH3R02RL from STMicroelectronics is an ultrafast recovery silicon diode using platinum-doped planar technology, rated for 200 V repetitive peak reverse voltage and 3 A average forward current in DO-201AD package. It delivers low conduction losses (VF typ. 0.7 V at 3 A, 25 °C), negligible switching losses, and fast reverse recovery time (trr typ. 16 ns at IF = 1 A, dIF/dt = −100 A/µs), making it suitable for high-frequency base drive circuits in SMPS and inverters.

For engineers reviewing the STTH3R02RL datasheet, STTH3R02RL pinout, STTH3R02RL application, or STTH3R02RL equivalent, this diode is selected for low-voltage, high-frequency free-wheeling, polarity protection, and transistor snubbing where low VF and sub-30 ns trr are critical to efficiency and thermal management.

Technical Context

This diode employs ST's Pt-doped planar junction process to achieve stable, temperature-invariant switching performance up to 175 °C junction temperature. Its dynamic behavior is characterized by low QRR (typ. 25 nC at IF = 3 A, VR = 160 V, Tj = 125 °C) and minimal IRM (typ. 4.0 A under same conditions), enabling clean turn-off in hard-switched topologies.

The device exhibits low thermal resistance: Rth(j-l) = 30 °C/W (DO-201AD, lead length = 10 mm), and its VF remains stable across temperature - dropping only ~0.15 V from 25 °C to 150 °C at 3 A - supporting consistent conduction loss prediction in thermally constrained designs.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	200 V - supports DC bus voltages up to 170 V with 15% margin in 120 VAC-derived supplies.
IF(AV)	3 A - continuous forward current rating at Tlead = 90 °C for DO-201AD, defining heatsink sizing baseline.
VF (typ)	0.7 V at 3 A, 25 °C - enables <1 W conduction loss per diode in 3 A applications, reducing thermal load.
trr (typ)	16 ns - ensures minimal switching loss and EMI generation in >100 kHz converters.
Tj (max)	175 °C - allows operation in sealed industrial enclosures without active cooling.
IR (max)	30 µA at 125 °C - guarantees low leakage in high-impedance bias networks and standby circuits.
Rth(j-l)	30 °C/W - defines thermal path from junction to lead; used to calculate junction temp rise under pulsed loads.

Pinout & Package

STTH3R02RL is packaged in DO-201AD - a through-hole axial lead package with epoxy body meeting UL94 V0 flammability rating. Lead diameter is 1.30 mm (min), total length ≥25.4 mm, and straight lead section ≥15 mm after bending.

Pin/Terminal	Circuit Role	Design Meaning
Anode (A)	Forward current entry point	Connected to switching node or low-side switch drain/source; must handle 75 A surge (IFSM).
Cathode (K)	Forward current exit / reverse blocking terminal	Connected to output rail or ground return; sustains full 200 V reverse bias during off-state.

Key Features

Feature	Design Value
Ultrafast recovery	trr ≤ 30 ns (max) ensures minimal tail current and reduced switching loss in hard-switched SMPS.
Low forward voltage	VF ≤ 1.0 V at 3 A, 25 °C reduces conduction loss by ~30% vs. standard FRD equivalents.
High junction temperature rating	175 °C max Tj enables use in unventilated power modules without derating at ambient ≤105 °C.
Stable dynamic parameters over temperature	QRR and IRM vary <2× from 25 °C to 125 °C, simplifying loss modeling across operating range.
ECOPACK® compliant packaging	Meets RoHS and halogen-free requirements without compromising thermal or mechanical robustness.

Applications

Switch-Mode Power Supply Output Rectification

Inverter Free-Wheeling Diode

Use Scenario: Secondary-side rectification in 50–200 W AC/DC adapters and DC/DC converters operating at 65–200 kHz.

IC Role / Device Role / Timing Role: Unidirectional current path with minimal forward drop and fast turn-off to reduce cross-conduction loss in synchronous rectifier control schemes.

Use Value: 0.7 V VF and 16 ns trr cut conduction + switching losses by ~22% versus legacy 1N5822 in identical 12 V/3 A output stage.

Use Scenario: Freewheeling path across inductive loads (e.g., BLDC motor phases, solenoid drivers) in 48 V industrial inverters.

IC Role / Device Role / Timing Role: Provides low-loss recirculation path during PWM off-time; fast trr prevents voltage overshoot on MOSFET drain.

Use Value: 30 ns max trr limits voltage spike to <220 V under 200 A/µs dIF/dt, eliminating need for RC snubbers in 5 kW drives.

Polarity Protection Circuit

Transistor Base Drive Clamp

Use Scenario: Reverse-voltage blocking in 12–48 V input rails of embedded controllers and IoT gateways.

IC Role / Device Role / Timing Role: Series-connected anode-in configuration blocks reverse current while maintaining low insertion loss during normal operation.

Use Value: 3 µA IR at 25 °C and 30 µA at 125 °C ensure <1 µW standby leakage, preserving battery life in always-on systems.

Use Scenario: Clamping diode across BJT/MOSFET base-emitter or gate-source in high-speed switching amplifiers and driver ICs.

IC Role / Device Role / Timing Role: Suppresses negative voltage transients during turn-off to protect sensitive input structures.

Use Value: 1.9 V VFP and 40 ns tfr prevent undershoot beyond −0.7 V, avoiding latch-up in CMOS gate drivers.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH3L02RL	Lower VF (0.65 V typ. at 3 A), but higher trr (35 ns typ.) due to soft-recovery design.	Better for low-loss linear regulation; less suitable for >150 kHz switching where fast trr dominates loss.	Select when conduction loss dominates and switching frequency <100 kHz.
VS-3EYH02-M3/54	Same VRRM/IF(AV), but TO-220AC package (Rth(j-c) = 1.5 °C/W); VF = 0.82 V, trr = 25 ns.	Requires heatsink; suited for >10 A parallel configurations or forced-air-cooled systems.	Choose for high-current, high-reliability industrial inverters needing lower thermal resistance.

Compared with STTH3R02RL, STTH3L02RL trades speed for lower VF in cost-sensitive low-frequency applications, while VS-3EYH02-M3/54 offers superior thermal performance at the expense of board space and mounting complexity - making STTH3R02RL optimal for compact, high-frequency, through-hole power stages.

Availability

STTH3R02RL is available at Aetrix Electronics and suitable for switch-mode power supplies, motor drive freewheeling paths, and polarity protection circuits requiring stable component supply with full production status and long-term manufacturability.

Supply support for STTH3R02RL 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.

STTH3R02RL belongs to ST's ultrafast recovery diode product line, engineered specifically for high-efficiency, high-frequency power conversion in space-constrained industrial and computing power supplies.

FAQ

Is STTH3R02RL suitable for synchronous rectification circuits?

Yes - its 16 ns typical reverse recovery time and low forward voltage enable efficient operation in synchronous rectifier topologies up to 200 kHz. The fast trr minimizes shoot-through risk during gate-drive overlap, and its stable VF across temperature simplifies control loop compensation in adaptive SR controllers.

What is the maximum allowable soldering temperature for STTH3R02RL?

The maximum lead temperature for soldering is 230 °C for 10 seconds at 4 mm from the case, per datasheet Table 2. Exceeding this risks internal bond wire damage or epoxy delamination. Reflow profiles must comply with JEDEC J-STD-020 for DO-201AD packages, limiting peak temperature to ≤260 °C for ≤10 s.

How does STTH3R02RL perform at elevated junction temperatures?

At 150 °C, VF drops to 0.70–0.80 V (vs. 0.89–1.0 V at 25 °C), improving conduction efficiency, while trr increases only modestly to ~20 ns. Reverse leakage remains below 30 µA, ensuring reliable blocking in hot environments like enclosed motor drives or LED drivers.

Can STTH3R02RL replace UF3007 in existing designs?

Yes - both are 200 V, 3 A ultrafast diodes in DO-201AD. STTH3R02RL offers lower VF (0.7 V vs. 0.95 V typ.) and faster trr (16 ns vs. 50 ns), reducing total losses by ~18% in 100 kHz flyback converters. Pinout and footprint are identical; no layout changes required.

STTH3R02RL Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: DO-201AD, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

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

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 3 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-201AD

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

STTH3R02RL FAQ

1.How can I place an order for STTH3R02RL through Aetrix?

Please submit a Request for Quotation (RFQ) for STTH3R02RL 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 STTH3R02RL reliable?

The price and inventory of STTH3R02RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH3R02RL is usually 5 days.

3.What payment methods are accepted for STTH3R02RL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH3R02RL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STTH3R02RL?

STTH3R02RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STTH3R02RL 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 STTH3R02RL?

For technical support, including STTH3R02RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH3R02RL requirements.

6.How does Aetrix verify that STTH3R02RL is sourced from the original manufacturer or authorized distributors?

All STTH3R02RL 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 STTH3R02RL meets industry standards.

7.What is the process for return or replacement of STTH3R02RL?

All STTH3R02RL units undergo pre-shipment inspection (PSI). If there is an issue with STTH3R02RL, 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 STTH3R02RL part is unused and in its original packaging.

Return procedure for STTH3R02RL:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…