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

Taiwan Semiconductor Corporation RS3DB-T R5G

Name: RS3DB-T R5G
Brand: Taiwan Semiconductor Corporation
SKU: RS3DB-T R5G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: RS3DB-T R5G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: RS3DB-T R5G.pdf

Description:: DIODE GEN PURP 200V 3A DO214AA

Quantity:: RFQ Add To RFQ list

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Inventory:1,335

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Product details

Overview

RS3DB-T from Taiwan Semiconductor is a 3A, 200V fast recovery surface-mount rectifier in DO-214AA (SMB) package, featuring 150ns reverse recovery time, 1.02V forward voltage at 3A/25°C, and 80A surge current capability. It serves as a primary output rectifier in DC-DC converters requiring low conduction loss and high thermal reliability.

For engineers reviewing the RS3DB-T datasheet, RS3DB-T pinout, RS3DB-T application, or RS3DB-T equivalent, key selection criteria include V_RRM=200V, I_F=3A, t_rr≤150ns, R_θJA=78°C/W, and DO-214AA mechanical compatibility with automated SMT assembly.

Technical Context

This single-die, glass-passivated silicon rectifier operates with junction temperatures from –55°C to +150°C and supports repetitive peak reverse voltages up to 200V. Its low leakage (≤5µA at 25°C, ≤150µA at 125°C) and stable forward voltage across temperature (0.87V at 3A/125°C) enable reliable operation in thermally constrained switching power supplies.

The device exhibits 50pF junction capacitance at 1MHz/4V and delivers 20°C/W junction-to-lead thermal resistance when mounted on a 10mm × 10mm copper pad - critical for managing power dissipation in compact DC-DC modules without heatsinks.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum reverse blocking voltage before breakdown; sets upper limit for input/output voltage rails in flyback or buck-derived topologies.
I_F	3 A continuous - Rated average forward current; defines steady-state power handling under natural convection cooling.
t_rr	≤150 ns - Fast recovery enables high-frequency switching (>100 kHz) with minimal switching loss and EMI generation.
V_F @ 3A/25°C	1.02 V max - Low conduction drop reduces I²R losses and improves efficiency in 12V–48V output stages.
I_FSM	80 A @ 8.3ms - Withstands short-duration inrush and fault currents without permanent degradation.
R_θJA	78 °C/W - Thermal resistance to ambient on standard PCB; determines temperature rise under load for derating calculations.

Pinout & Package

Package: DO-214AA (SMB), surface-mount, matte tin-plated leads, polarity indicated by cathode band, moisture sensitivity level 1 per J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of circuit (e.g., transformer secondary center-tap or switch node return path).
Cathode	Forward current exit point	Connected to output filter capacitor positive terminal; marked by visible band for orientation verification during placement.

Key Features

Feature	Design Value
Glass passivated junction	Prevents moisture-induced corrosion and ensures long-term reliability in humid industrial environments.
Low reverse leakage (≤5 µA @ 25°C)	Minimizes standby power loss in offline adapters and battery-backed systems.
Junction-to-lead thermal resistance = 20 °C/W	Enables efficient heat transfer to PCB copper, supporting higher current density without thermal runaway.
RoHS and halogen-free compliance	Meets IEC 61249-2-21 and global environmental regulations for consumer, telecom, and industrial end equipment.

Applications

DC-DC Converter Output Rectification	Switching Mode Inverter Freewheeling
Use Scenario: Secondary-side rectification in isolated 24V/3A buck-derived DC-DC modules for industrial PLCs. IC Role / Device Role / Timing Role: Power rectifier converting high-frequency AC from transformer secondary into regulated DC output. Use Value: 150ns t_rr and 1.02V V_F reduce switching and conduction losses, improving full-load efficiency by ≥0.8% versus standard FRDs.	Use Scenario: Freewheeling path in half-bridge motor drive inverters operating at 20kHz PWM frequency. IC Role / Device Role / Timing Role: Clamp inductive kickback energy during MOSFET turn-off to protect switching devices. Use Value: 80A I_FSM withstands motor stall surges; low V_F minimizes heating during extended freewheeling intervals.
AC-DC Adapter Primary-Side Snubber	Telecom Power Supply Hold-Up Rectification
Use Scenario: Snubber diode in quasi-resonant flyback adapters for 12V/2.5A laptop chargers. IC Role / Device Role / Timing Role: Absorbs leakage inductance energy during MOSFET off-time to suppress voltage spikes. Use Value: 200V V_RRM provides 2× margin over reflected 100V spike; 150ns t_rr prevents snap-off oscillation.	Use Scenario: Hold-up rectifier in 48V telecom power shelves maintaining output during 10ms AC dropout. IC Role / Device Role / Timing Role: Unidirectional charge path from bulk capacitor to backup converter input. Use Value: 3A I_F rating supports >95% hold-up efficiency; DO-214AA footprint allows dense layout near capacitor bank.

DC-DC Converter Output Rectification

Switching Mode Inverter Freewheeling

Use Scenario: Secondary-side rectification in isolated 24V/3A buck-derived DC-DC modules for industrial PLCs.

IC Role / Device Role / Timing Role: Power rectifier converting high-frequency AC from transformer secondary into regulated DC output.

Use Value: 150ns t_rr and 1.02V V_F reduce switching and conduction losses, improving full-load efficiency by ≥0.8% versus standard FRDs.

Use Scenario: Freewheeling path in half-bridge motor drive inverters operating at 20kHz PWM frequency.

IC Role / Device Role / Timing Role: Clamp inductive kickback energy during MOSFET turn-off to protect switching devices.

Use Value: 80A I_FSM withstands motor stall surges; low V_F minimizes heating during extended freewheeling intervals.

AC-DC Adapter Primary-Side Snubber

Telecom Power Supply Hold-Up Rectification

Use Scenario: Snubber diode in quasi-resonant flyback adapters for 12V/2.5A laptop chargers.

IC Role / Device Role / Timing Role: Absorbs leakage inductance energy during MOSFET off-time to suppress voltage spikes.

Use Value: 200V V_RRM provides 2× margin over reflected 100V spike; 150ns t_rr prevents snap-off oscillation.

Use Scenario: Hold-up rectifier in 48V telecom power shelves maintaining output during 10ms AC dropout.

IC Role / Device Role / Timing Role: Unidirectional charge path from bulk capacitor to backup converter input.

Use Value: 3A I_F rating supports >95% hold-up efficiency; DO-214AA footprint allows dense layout near capacitor bank.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH3L06S	V_RRM=600V, t_rr=50ns, V_F=1.15V @ 3A/25°C, same DO-214AA package	Higher voltage rating suits 400V bus designs; faster recovery reduces EMI in >300kHz converters	Select when system requires >300V reverse margin or ultra-low t_rr; verify layout thermal relief for higher V_F.
ON Semi MUR320	V_RRM=200V, t_rr=35ns, V_F=1.05V @ 3A/25°C, DO-214AA package	Ultra-fast recovery enables >500kHz operation; identical voltage/current ratings simplify drop-in evaluation	Choose for highest-frequency SMPS where t_rr < 50ns is mandatory; confirm IR spec matches system leakage budget.

Compared with STTH3L06S and MUR320, the RS3DB-T offers optimal balance of cost, 200V rating, and 150ns recovery for mainstream 100–200kHz DC-DC converters - delivering lower V_F than STTH3L06S and higher ruggedness than MUR320 at rated I_FSM.

Availability

RS3DB-T is available at Aetrix Electronics and suitable for DC-DC converter output rectification, switching mode inverter freewheeling, and telecom power supply hold-up rectification requiring stable component supply and consistent DO-214AA packaging.

Supply support for RS3DB-T 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS diodes, and MOSFETs for industrial and computing markets.

The RS3x series was developed specifically for high-efficiency, surface-mount switching power supplies - emphasizing fast recovery, low leakage, and robust thermal performance in SMB packages.

FAQ

What is the maximum junction temperature rating for RS3DB-T?

The RS3DB-T has a maximum junction temperature (T_J) of +150°C and a minimum of –55°C, enabling operation in harsh industrial environments. This rating is validated under specified thermal conditions including R_θJA=78°C/W on a 10mm × 10mm Cu pad. Derating curves in the RS3DB-T datasheet define safe current limits above 75°C ambient, ensuring long-term reliability without thermal runaway.

Does RS3DB-T support automated SMT placement?

Yes, RS3DB-T is explicitly designed for automated placement: its DO-214AA (SMB) package features matte tin-plated leads compliant with J-STD-002 solderability standards and moisture sensitivity level 1 per J-STD-020. The symmetric lead geometry and cathode band marking ensure high-yield pick-and-place accuracy and post-reflow visual inspection.

What is the reverse recovery time specification for RS3DB-T?

The RS3DB-T has a reverse recovery time (t_rr) of ≤150 ns under test conditions of I_F=0.5A, I_R=1.0A, and I_RR=0.25A. This value is measured at 25°C and remains stable across temperature - 0.87V V_F at 3A/125°C confirms low dynamic losses during high-frequency switching in DC-DC converters.

Is RS3DB-T RoHS and halogen-free compliant?

Yes, RS3DB-T meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. The molding compound is UL 94V-0 rated, and terminals pass JESD 201 Class 1 whisker testing. These certifications are documented in Taiwan Semiconductor's official compliance statements and apply to all RS3DB-T units shipped from certified production lots.

How does RS3DB-T compare to RS3GB-T in terms of voltage rating and forward voltage?

RS3DB-T is rated for 200V V_RRM, while RS3GB-T is rated for 400V - both share identical I_F=3A, t_rr≤150ns, and DO-214AA packaging. At 3A/25°C, RS3DB-T has V_F=1.02V max, whereas RS3GB-T specifies 1.05V max. The lower voltage rating of RS3DB-T enables tighter process control and slightly better conduction efficiency in 24–48V systems.

RS3DB-T R5G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AA, SMB

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:: 1.3 V @ 3 A

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

Reverse Recovery Time (trr):: 150 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 200 V

Capacitance @ Vr, F:: 50pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AA (SMB)

Operating Temperature - Junction:: -55°C ~ 150°C

RS3DB-T R5G FAQ

1.How can I place an order for RS3DB-T R5G through Aetrix?

Please submit a Request for Quotation (RFQ) for RS3DB-T R5G 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 RS3DB-T R5G reliable?

The price and inventory of RS3DB-T R5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS3DB-T R5G is usually 5 days.

3.What payment methods are accepted for RS3DB-T R5G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS3DB-T R5G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for RS3DB-T R5G?

RS3DB-T R5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your RS3DB-T R5G 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 RS3DB-T R5G?

For technical support, including RS3DB-T R5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS3DB-T R5G requirements.

6.How does Aetrix verify that RS3DB-T R5G is sourced from the original manufacturer or authorized distributors?

All RS3DB-T R5G 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 RS3DB-T R5G meets industry standards.

7.What is the process for return or replacement of RS3DB-T R5G?

All RS3DB-T R5G units undergo pre-shipment inspection (PSI). If there is an issue with RS3DB-T R5G, 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 RS3DB-T R5G part is unused and in its original packaging.

Return procedure for RS3DB-T R5G:

1.Submit a request within 90 days.

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

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