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

Taiwan Semiconductor Corporation S3B

Name: S3B
Brand: Taiwan Semiconductor Corporation
SKU: S3B
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S3B

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: S3B.pdf

Description:: DIODE GEN PURP 100V 3A DO214AB

Quantity:: RFQ Add To RFQ list

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Inventory:9,069

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Product details

Overview

S3B from Taiwan Semiconductor is a 3A, 100V surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring glass-passivated junction, low forward voltage drop (max 1.15V at 3A), high surge capability (100A @ 8.3ms), and RoHS/halogen-free compliance. It serves as the main output rectifier in AC/DC adapters and offline SMPS.

For engineers reviewing the S3B datasheet, S3B pinout, S3B application, or S3B equivalent, key selection criteria include repetitive peak reverse voltage (100V), thermal resistance (R_θJL = 13°C/W), reverse recovery time (1500ns), and moisture sensitivity level (J-STD-020 Level 1).

Technical Context

The S3B is a single-die, standard-recovery silicon rectifier optimized for cost-sensitive, medium-voltage power conversion. Its 100V V_RRM, 3A average forward current, and 100A non-repetitive surge rating support continuous operation in 115/230VAC input-derived supplies with margin.

Thermal performance is defined by R_θJL = 13°C/W and R_θJA = 47°C/W, enabling PCB-mounted operation without heatsinking up to ~1.5W dissipation at ambient. Reverse recovery time of 1500ns reflects standard recovery behavior-suitable for <100kHz switching but not recommended for high-frequency synchronous rectification.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for DC bus or output rail voltage handling.
I_F	3 A - Continuous average forward current at T_L = 75°C; defines steady-state conduction capacity.
I_FSM	100 A - Non-repetitive surge current (8.3ms half-sine); supports inrush and transient overload without failure.
V_F	≤1.15 V - Forward voltage at 3A and 25°C; directly impacts conduction loss and thermal design in rectifier stage.
t_rr	1500 ns - Reverse recovery time under specified test conditions; determines switching loss and EMI profile in hard-switched topologies.
R_θJL	13 °C/W - Junction-to-lead thermal resistance; enables direct thermal path to PCB copper via cathode/anode leads for passive cooling.
Junction temp	–55°C to +150°C - Operating temperature range; allows use in industrial ambient environments without derating below –40°C.

Pinout & Package

Package: DO-214AB (SMC), molded plastic case with matte tin-plated leads, polarity indicated by cathode band, weight ≈0.210g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to transformer secondary or switch node; must handle full load current and surge peaks.
Cathode	Forward current exit / reverse blocking terminal	Connected to output capacitor or filter inductor; carries return current and sustains reverse bias up to 100V.

Key Features

Feature	Design Value
Glass passivated junction	Enhances long-term reliability and humidity resistance without hermetic sealing-critical for consumer-grade power adapters.
Moisture sensitivity level 1	Eliminates bake requirement prior to reflow; compatible with standard SMT assembly lines without special handling.
Low forward voltage (≤1.15V)	Reduces conduction loss by ~0.35W vs. higher-V_F alternatives at 3A, lowering thermal stress on PCB layout.
High surge current (100A)	Withstands cold-start inrush and line transients in universal-input SMPS without degradation or failure.
RoHS and halogen-free	Meets global environmental compliance requirements for CE, UL, and WEEE-marked end equipment.

Applications

AC/DC Adapters	Offline SMPS
Use Scenario: 5–36W wall-mounted adapters for consumer electronics (routers, monitors, peripherals). IC Role / Device Role / Timing Role: Output rectifier converting transformer secondary AC to regulated DC; operates at 50–100kHz. Use Value: Low V_F minimizes heat buildup in compact enclosures; DO-214AB footprint fits tight board space constraints.	Use Scenario: Primary-side controlled flyback converters in industrial power modules and LED drivers. IC Role / Device Role / Timing Role: Secondary-side rectifier delivering isolated DC output; handles 3A continuous load with 100V headroom. Use Value: 100A surge rating absorbs startup surges and short-circuit events without latch-up or parametric shift.
LED Lighting Drivers	DC-DC Converters
Use Scenario: Constant-current LED drivers for commercial downlights and streetlight modules. IC Role / Device Role / Timing Role: Bulk rectifier in bridge or single-diode configuration feeding buck or buck-boost regulator stages. Use Value: 150°C max junction temperature supports operation inside thermally constrained LED housings.	Use Scenario: Isolated DC-DC modules (e.g., 24V-to-5V) used in PLC I/O and sensor interface boards. IC Role / Device Role / Timing Role: Secondary-side rectifier in forward or push-pull topology; conducts during active switch phase. Use Value: R_θJL = 13°C/W enables direct thermal coupling to ground plane, reducing need for thermal vias or copper pours.

AC/DC Adapters

Offline SMPS

Use Scenario: 5–36W wall-mounted adapters for consumer electronics (routers, monitors, peripherals).

IC Role / Device Role / Timing Role: Output rectifier converting transformer secondary AC to regulated DC; operates at 50–100kHz.

Use Value: Low V_F minimizes heat buildup in compact enclosures; DO-214AB footprint fits tight board space constraints.

Use Scenario: Primary-side controlled flyback converters in industrial power modules and LED drivers.

IC Role / Device Role / Timing Role: Secondary-side rectifier delivering isolated DC output; handles 3A continuous load with 100V headroom.

Use Value: 100A surge rating absorbs startup surges and short-circuit events without latch-up or parametric shift.

LED Lighting Drivers

DC-DC Converters

Use Scenario: Constant-current LED drivers for commercial downlights and streetlight modules.

IC Role / Device Role / Timing Role: Bulk rectifier in bridge or single-diode configuration feeding buck or buck-boost regulator stages.

Use Value: 150°C max junction temperature supports operation inside thermally constrained LED housings.

Use Scenario: Isolated DC-DC modules (e.g., 24V-to-5V) used in PLC I/O and sensor interface boards.

IC Role / Device Role / Timing Role: Secondary-side rectifier in forward or push-pull topology; conducts during active switch phase.

Use Value: R_θJL = 13°C/W enables direct thermal coupling to ground plane, reducing need for thermal vias or copper pours.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MUR310	Ultrafast recovery (t_rr = 75ns), same V_RRM/I_F, DO-214AB package	Better suited for higher-frequency (>200kHz) topologies where switching loss dominates	Select MUR310 only if t_rr reduction justifies higher cost and no V_F penalty (V_F = 1.25V typical)
Vishay VS-3EWH01-M3/54	Same V_RRM/I_F, lower V_F (1.05V typ), AEC-Q101 qualified, DO-214AB	Targeted at automotive-grade designs requiring extended temperature and qualification traceability	Choose VS-3EWH01-M3/54 when AEC-Q101 compliance or tighter V_F tolerance is mandatory

Compared with MUR310 and VS-3EWH01-M3/54, the S3B offers optimal balance of cost, thermal robustness, and standard-recovery performance for industrial and consumer offline power supplies-not ultrafast or automotive-qualified, but fully validated for high-volume adapter production.

Availability

S3B is available at Aetrix Electronics and suitable for AC/DC adapters, offline SMPS, and LED lighting drivers requiring stable component supply, J-STD-020 Level 1 assembly compatibility, and RoHS-compliant sourcing.

Supply support for S3B 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, serving global power and protection markets since 1979.

The S3A–S3M series was designed specifically for cost-effective, high-reliability AC/DC rectification across universal-input power supplies-from consumer adapters to industrial LED drivers-with emphasis on manufacturability and JEDEC-standard packaging.

FAQ

What is the maximum repetitive peak reverse voltage rating for the S3B?

The S3B has a maximum repetitive peak reverse voltage (V_RRM) of 100 V, as confirmed in the Absolute Maximum Ratings table for the S3A–S3M family. This rating defines the highest reverse-biased voltage the S3B can block continuously without breakdown under normal operating conditions and is strictly applicable to the S3B variant per its marking code and datasheet row.

Does the S3B have a specified reverse recovery time, and how is it measured?

Yes, the S3B has a reverse recovery time (t_rr) of 1500 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per the Electrical Specifications table. This value reflects standard recovery behavior and is critical for estimating switching losses in hard-switched topologies using the S3B as the output rectifier.

Is the S3B suitable for lead-free reflow soldering, and what is its moisture sensitivity level?

Yes, the S3B is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH and requires no baking before standard lead-free reflow. Its matte tin-plated leads are solderable per J-STD-002, making the S3B fully compatible with automated SMT assembly lines.

What is the thermal resistance from junction to lead (R_θJL) for the S3B, and why does it matter?

The S3B has a junction-to-lead thermal resistance (R_θJL) of 13°C/W, enabling efficient heat transfer from the die to the PCB copper through the anode and cathode leads. This parameter matters because it directly determines achievable power dissipation without external heatsinking-supporting up to ~1.5W at T_L = 75°C in typical layouts using the S3B.

Can the S3B replace the S3A or S3D in an existing design?

No-the S3B is not a drop-in replacement for S3A (50V) or S3D (200V) due to differing V_RRM ratings. Substituting the S3B for S3A risks overvoltage failure; substituting for S3D risks insufficient reverse blocking. The S3B must be used only where 100V V_RRM is electrically and safety-certified for the target application.

S3B Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AB, SMC

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 100 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 @ 100 V

Capacitance @ Vr, F:: 60pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AB (SMC)

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

S3B FAQ

1.How can I place an order for S3B through Aetrix?

Please submit a Request for Quotation (RFQ) for S3B 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 S3B reliable?

The price and inventory of S3B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S3B is usually 5 days.

3.What payment methods are accepted for S3B?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S3B transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S3B?

S3B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S3B 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 S3B?

For technical support, including S3B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S3B requirements.

6.How does Aetrix verify that S3B is sourced from the original manufacturer or authorized distributors?

All S3B 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 S3B meets industry standards.

7.What is the process for return or replacement of S3B?

All S3B units undergo pre-shipment inspection (PSI). If there is an issue with S3B, 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 S3B part is unused and in its original packaging.

Return procedure for S3B:

1.Submit a request within 90 days.

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

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