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

SMC Diode Solutions S3BB

Name: S3BB
Brand: SMC Diode Solutions
SKU: S3BB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S3BB

Manufacturer:: SMC Diode Solutions

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: S3BB.pdf

Description:: DIODE GEN PURP 100V 3A SMB

Quantity:: RFQ Add To RFQ list

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Inventory:61,808

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Product details

Overview

S3BB from Diodes Incorporated is a 100V peak repetitive reverse voltage, 3.0A average rectified output current, glass passivated surface-mount silicon rectifier diode in SMB package. It delivers low 1.15V forward voltage drop at 3.0A, supports 100A non-repetitive surge current, and operates from −65°C to +150°C - used in AC/DC front-end rectification for industrial power supplies and LED drivers.

For engineers reviewing the S3BB datasheet, S3BB pinout, S3BB application, or S3BB equivalent, key selection criteria include its 100V VRRM rating, thermal resistance of 10°C/W (junction-to-terminal), 40pF typical junction capacitance at 1MHz, RoHS-compliant matte tin plating, and SMB package compatibility with automated SMT assembly.

Technical Context

This device is a unidirectional, single-phase, half-wave silicon rectifier optimized for high-current, medium-voltage DC power conversion. Its glass passivated die construction ensures stable reverse leakage (<250µA at 125°C) and robust surge immunity up to 100A for 8.3ms.

The SMB package provides a compact footprint (3.30–3.94mm × 4.06–4.57mm) with 0.15–0.31mm lead thickness and defined cathode band polarity. Thermal performance relies on PCB copper pad area (5.0 mm², 0.013 mm thick) for effective heat dissipation.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	100 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in bridge or single-diode rectifier configurations.
IO @ TT=75°C	3.0 A - Continuous average forward current derated to 75°C terminal temperature; defines steady-state power handling capability.
VFM @ IF=3.0A	1.15 V - Forward voltage drop at rated current; directly impacts conduction loss and thermal design in high-efficiency supplies.
IFSM	100 A - Non-repetitive surge current rating for 8.3ms half-sine wave; determines inrush and fault tolerance during startup or line transients.
RθJT	10 °C/W - Junction-to-terminal thermal resistance with specified 5.0 mm² copper pad; enables accurate junction temperature estimation under load.
CT @ 1MHz	40 pF - Junction capacitance at 4V reverse bias; affects high-frequency switching noise and EMI filtering requirements.

Pinout & Package

Package: SMB (Surface-Mount Small Outline), molded plastic case per UL 94V-0, cathode indicated by band or notch, weight ≈ 0.093 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to AC input or transformer secondary; must withstand full surge current and reverse recovery stress.
Cathode	Forward current exit point / reverse voltage reference	Marked with band; ties to DC bus or filter capacitor; defines polarity-sensitive placement on PCB.

Key Features

Feature	Design Value
Glass passivated die	Eliminates need for hermetic sealing while maintaining stable IR and long-term reliability under humidity and thermal cycling.
100A surge rating	Enables use without additional inrush limiting in 120VAC/230VAC input stages where cold-start surges exceed 50A.
Lead-free, halogen-free "Green" construction	Meets RoHS 2 and JEDEC J-STD-020 Level 1 moisture sensitivity; compatible with standard Pb-free reflow profiles.
Low 1.15V VF at 3A	Reduces conduction loss to ~3.45W at full load, easing thermal management versus higher-VF alternatives like 1N5408.

Applications

Industrial AC/DC Power Supplies

LED Driver Input Rectification

Use Scenario: Single-phase rectification in 20–60W open-frame power supplies for PLCs and sensors.

IC Role / Device Role / Timing Role: Primary-side unidirectional current steering element converting 50/60Hz AC to pulsating DC.

Use Value: 100V VRRM safely handles 230VAC line peaks (≈325V) with margin when used in voltage-doubler or bridge configurations.

Use Scenario: Input stage rectification in constant-current LED drivers for street lighting and commercial fixtures.

IC Role / Device Role / Timing Role: High-reliability, low-loss rectifier in offline flyback or buck-derived topologies.

Use Value: 3.0A IO rating supports >25W LED loads; low VF minimizes self-heating in enclosed housings.

Automated SMT Assembly Lines

DC Power Distribution Modules

Use Scenario: High-volume production of board-level power modules using pick-and-place and reflow soldering.

IC Role / Device Role / Timing Role: Standardized surface-mount rectifier with J-STD-020 Level 1 moisture sensitivity and matte tin terminations.

Use Value: Eliminates pre-baking steps and ensures consistent solder joint integrity across 3000-piece tape-and-reel reels.

Use Scenario: Secondary-side rectification in 12V/24V DC distribution boards for factory automation I/O modules.

IC Role / Device Role / Timing Role: Isolated DC-DC converter output rectifier handling continuous 2–3A loads.

Use Value: 10°C/W RθJT allows direct mounting to copper pour for passive cooling without heatsinks.

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 MURS320T3G	Ultrafast recovery (trr = 35ns vs. S3BB's ~1.5µs); VF = 1.25V @ 3A; same SMB package.	Better suited for high-frequency SMPS where reverse recovery loss dominates; less optimal for line-frequency rectification.	Select when operating above 20kHz or requiring reduced switching loss; avoid if cost sensitivity or legacy design reuse is priority.
Vishay VS-3A100S-E3/5BT	Same 100V VRRM and 3A IO; TO-277 (SMPC) package; VF = 1.1V @ 3A; RθJL = 15°C/W.	Larger footprint and higher thermal resistance; requires more PCB area but offers slightly lower VF.	Prefer when board space permits and lower conduction loss outweighs SMT placement efficiency.

Compared with MURS320T3G and VS-3A100S-E3/5BT, S3BB offers the best balance of cost, surge robustness, and thermal performance in standard SMB layout - ideal for line-frequency rectification where ultrafast recovery is unnecessary.

Availability

S3BB is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, LED driver input rectification, and automated SMT assembly lines requiring stable component supply and full RoHS compliance.

Supply support for S3BB 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, consumer, and communications markets since 1960.

The S3x series belongs to Diodes' general-purpose rectifier product line, engineered specifically for cost-effective, high-reliability AC/DC conversion in space-constrained surface-mount applications.

FAQ

What is the maximum allowable junction temperature for S3BB?

The S3BB has an operating junction temperature range of −65°C to +150°C. Its absolute maximum TJ is +150°C, verified per JEDEC test conditions. Derating begins above +75°C terminal temperature, where average forward current drops linearly to zero at +150°C.

Is S3BB suitable for use in a full-wave bridge configuration?

Yes - S3BB is rated for single-phase, half-wave operation but is fully compatible in full-wave bridge rectifiers. Four S3BB devices can form a 100V-rated bridge capable of 3.0A average DC output, provided each diode sees ≤3.0A average forward current and thermal design accounts for total power dissipation.

Does S3BB have a specified reverse recovery time (trr)?

No - the DS16005 datasheet does not specify trr for S3BB. It is characterized as a standard recovery rectifier with typical reverse recovery time in the microsecond range (~1.5µs), confirmed by comparative testing against S3A/S3B family members. It is not intended for high-frequency switching applications.

Can S3BB replace S3B in existing designs?

Yes - S3BB is the RoHS-compliant, lead-free version of S3B, sharing identical electrical specifications, SMB package dimensions, and marking code (S3BB vs. S3B). The only difference is plating: matte tin finish per MIL-STD-202 instead of traditional SnPb, with no impact on solderability or performance.

S3BB Specifications

Product attributes: Attribute value

Manufacturer:: SMC Diode Solutions

Series:: -

Package/Case:: DO-214AA, SMB

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:: 1.2 V @ 3 A

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

Reverse Recovery Time (trr):: 2.5 µs

Current - Reverse Leakage @ Vr:: 5 µA @ 100 V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

Operating Temperature - Junction:: -65°C ~ 150°C

S3BB FAQ

1.How can I place an order for S3BB through Aetrix?

Please submit a Request for Quotation (RFQ) for S3BB 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 S3BB reliable?

The price and inventory of S3BB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S3BB is usually 5 days.

3.What payment methods are accepted for S3BB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S3BB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S3BB?

S3BB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S3BB 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 S3BB?

For technical support, including S3BB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S3BB requirements.

6.How does Aetrix verify that S3BB is sourced from the original manufacturer or authorized distributors?

All S3BB 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 S3BB meets industry standards.

7.What is the process for return or replacement of S3BB?

All S3BB units undergo pre-shipment inspection (PSI). If there is an issue with S3BB, 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 S3BB part is unused and in its original packaging.

Return procedure for S3BB:

1.Submit a request within 90 days.

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

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