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

Taiwan Semiconductor Corporation S3DB

Name: S3DB
Brand: Taiwan Semiconductor Corporation
SKU: S3DB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: S3DB

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: S3DB.pdf

Description:: DIODE GEN PURP 200V 3A DO214AA

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:6,000

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

Product details

Overview

S3DB from Diodes Incorporated is a 3.0A, 200V glass passivated surface-mount rectifier diode in SMB package, featuring 1.15V forward voltage at 3.0A, 100A non-repetitive surge capability, and 10°C/W junction-to-terminal thermal resistance-used in AC/DC front-end rectification for industrial power supplies and LED drivers.

For engineers reviewing the S3DB datasheet, S3DB pinout, S3DB application, or S3DB equivalent, key selection criteria include peak reverse voltage (200V), average forward current (3.0A at +75°C), thermal resistance (10°C/W), surge rating (100A), and RoHS-compliant lead-free plating with SMB footprint compatibility.

Technical Context

This device operates as a single-phase, half-wave silicon rectifier optimized for high-current, low-V_F operation under resistive or inductive loads at 60Hz. Its glass passivated die construction ensures stable reverse leakage (<10µA @ 25°C, <250µA @ 125°C) and robust surge immunity up to 100A for 8.3ms half-sine wave.

The SMB package enables automated assembly with UL 94V-0 molded plastic housing, cathode band polarity marking, and thermal performance validated on 5.0 mm² copper pad. Capacitance is tightly controlled at 40 pF (1 MHz, 4V reverse bias), supporting EMI-sensitive switching applications.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 120VAC-derived circuits.
I_O	3.0 A @ T_T = +75°C - Continuous DC output current rating; derated above ambient per Fig. 1 curve.
V_FM	1.15 V @ I_F = 3.0A - Low conduction loss enabling >85% efficiency in 12V/24V SMPS input stages.
I_FSM	100 A (8.3ms) - Withstands inrush surges from cold-start capacitors without failure.
R_θJT	10 °C/W - Junction-to-terminal thermal resistance measured on 5.0 mm² copper pad; enables direct PCB heatsinking.
C_T	40 pF @ 1 MHz, 4V - Low junction capacitance minimizes switching noise coupling in high-frequency converters.
I_RM	10 µA @ 25°C / 250 µA @ 125°C - Confirmed reverse leakage supports stable blocking in temperature-critical environments.

Pinout & Package

Package: SMB (Surface-Mount Small Outline) - Molded plastic case, UL 94V-0 rated, cathode identified by band marking, matte tin-plated terminals solderable per MIL-STD-202 Method 208.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry point during forward conduction	Connected to AC input or transformer secondary; must handle full 3.0A RMS current and 100A surge.
Cathode	Current exit point during forward conduction; marked with band	Routes rectified DC to bulk capacitor; polarity critical for correct circuit operation and ESD protection layout.

Key Features

Feature	Design Value
Glass passivated die	Eliminates moisture-induced degradation and improves long-term reliability in humid industrial environments.
100A surge rating	Supports repeated cold-start events in power adapters without parametric shift or catastrophic failure.
Lead-free & halogen-free	Meets RoHS 2 (2011/65/EU) and "Green" compliance: Br+Cl <1500ppm, Sb <1000ppm.
Automated assembly compatible	SMB footprint aligns with IPC-7351B standards; enables high-yield pick-and-place at >25,000 UPH.

Applications

Industrial Power Supplies

LED Driver Input Stage

Use Scenario: Rectifying 120VAC/230VAC input in DIN-rail mounted 24V/48V PSUs for PLCs and motor controllers.

IC Role / Device Role / Timing Role: Primary AC/DC rectifier converting line voltage to unregulated DC bus prior to buck conversion.

Use Value: 1.15V V_FM reduces conduction loss by ~15% vs. legacy 1N5408, improving thermal margin at 3A load.

Use Scenario: Front-end rectification in constant-current LED drivers powering streetlights and high-bay fixtures.

IC Role / Device Role / Timing Role: Unidirectional current path for bridgeless or single-diode input stage; blocks reverse voltage during AC zero-crossings.

Use Value: 200V V_RRM safely handles 170V peak from 120VAC and transient spikes up to 250V without avalanche stress.

Consumer AC Adapters

DC Motor Control Boards

Use Scenario: Output rectification in compact wall-wart adapters delivering 5–12V/2A for IoT gateways and smart home hubs.

IC Role / Device Role / Timing Role: Secondary-side rectifier in flyback topology; conducts only during transformer reset phase.

Use Value: SMB package fits tight board space while 10°C/W R_θJT allows passive cooling without heatsink.

Use Scenario: Freewheeling diode across brushed DC motor windings in battery-powered tools and HVAC actuators.

IC Role / Device Role / Timing Role: Clamp inductive kickback energy during PWM turn-off; conducts brief high-current pulses.

Use Value: 100A I_FSM withstands repeated 50A motor stall transients without bond wire lift or junction failure.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MUR320	Ultrafast recovery (t_rr = 50ns vs. S3DB's ~2000ns); higher V_F (1.3V)	Better for high-frequency SMPS (>100kHz); unsuitable where low conduction loss dominates	Select when switching noise or EMI limits require fast recovery; avoid if thermal budget is constrained.
Vishay VS-3EJH02-M3/5A	Same V_RRM/I_O, but SMC package (larger footprint, lower R_θJA)	Preferred for higher ambient temp (>85°C) or forced-air cooled designs	Choose for improved thermal dissipation where board area permits SMC; verify pad layout compatibility.

Compared with MUR320 and VS-3EJH02-M3/5A, S3DB delivers lowest forward loss in SMB-constrained layouts but trades off speed and thermal headroom-ideal for cost-sensitive, thermally moderate 50/60Hz rectification.

Availability

S3DB is available at Aetrix Electronics and suitable for industrial power supplies, LED driver input stages, consumer AC adapters, and DC motor control boards requiring stable component supply and RoHS-compliant sourcing.

Supply support for S3DB 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, serving industrial, computing, communications, and consumer markets since 1960.

The S3x/B series belongs to Diodes' general-purpose rectifier product line, engineered for high-current, low-loss AC/DC conversion in cost-sensitive, high-volume power applications with emphasis on manufacturability and regulatory compliance.

FAQ

What is the maximum operating temperature for S3DB?

S3DB has an operating junction temperature range of –65°C to +150°C. The average forward current rating of 3.0A applies at terminal temperature (T_T) = +75°C; derating follows the curve in Figure 1, reaching ~1.5A at +125°C terminal temperature.

Is S3DB suitable for use in a full-wave bridge configuration?

Yes-S3DB can be used as one leg in a discrete full-wave bridge. Its 200V V_RRM supports 120VAC inputs (170V peak), and its 100A surge rating accommodates bridge inrush. Ensure matched diodes and symmetric PCB layout to balance thermal stress across all four devices.

Does S3DB require a heatsink in standard applications?

No external heatsink is required for typical 3.0A operation at +75°C terminal temperature when mounted on a 5.0 mm² copper pad. Its 10°C/W R_θJT enables sufficient self-cooling; however, ambient temperatures above +85°C or continuous 3A loads may necessitate increased copper area or airflow.

How does S3DB's glass passivation improve reliability versus epoxy-passivated diodes?

Glass passivation provides superior moisture barrier properties and thermal stability over epoxy, reducing parameter drift and preventing corrosion-induced failure in humid or thermally cycling environments-validated by J-STD-020 Level 1 moisture sensitivity and 1000-hour HAST testing per Diodes Incorporated qualification standards.

S3DB 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:: 1.15 V @ 3 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 1.5 µs

Current - Reverse Leakage @ Vr:: 10 µA @ 200 V

Capacitance @ Vr, F:: 40pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

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

S3DB FAQ

1.How can I place an order for S3DB through Aetrix?

Please submit a Request for Quotation (RFQ) for S3DB 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 S3DB reliable?

The price and inventory of S3DB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S3DB is usually 5 days.

3.What payment methods are accepted for S3DB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S3DB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S3DB?

S3DB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S3DB 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 S3DB?

For technical support, including S3DB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S3DB requirements.

6.How does Aetrix verify that S3DB is sourced from the original manufacturer or authorized distributors?

All S3DB 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 S3DB meets industry standards.

7.What is the process for return or replacement of S3DB?

All S3DB units undergo pre-shipment inspection (PSI). If there is an issue with S3DB, 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 S3DB part is unused and in its original packaging.

Return procedure for S3DB:

1.Submit a request within 90 days.

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

Tech Hub

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…