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

Diodes Incorporated SB3100-B

Name: SB3100-B
Brand: Diodes Incorporated
SKU: SB3100-B
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SB3100-B

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: DO-201AD, Axial

Datasheet:: SB3100-B.pdf

Description:: DIODE SCHOTTKY 100V 3A DO201AD

Quantity:: RFQ Add To RFQ list

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Inventory:3,885

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Product details

Overview

SB3100-B from Diodes Incorporated is a 3.0A, 100V Schottky barrier rectifier in DO-201AD package, featuring 0.79V forward voltage at 3.0A, 100A non-repetitive surge capability, and 250pF junction capacitance. It serves as a low-loss freewheeling or polarity protection diode in DC-DC converters and automotive power supplies.

For engineers reviewing the SB3100-B datasheet, SB3100-B pinout, SB3100-B application, or SB3100-B equivalent, this page delivers verified electrical parameters, thermal derating behavior, reverse leakage profile at +100°C, and DO-201AD mechanical dimensions for layout and thermal design validation.

Technical Context

This Schottky rectifier uses guard ring die construction to enhance transient robustness and suppress edge breakdown. Its low V_F (0.79V @ 3.0A) and high I_FSM (100A) support efficient energy recovery in high-frequency switching topologies.

Thermal resistance is rated at 20 K/W junction-to-ambient under standard mounting conditions, with operating temperature spanning –65°C to +150°C. Junction capacitance of 250 pF at 4.0V reverse bias enables predictable high-frequency behavior in snubberless designs.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse blocking voltage; defines safe DC or peak AC voltage limit before avalanche conduction.
I_O	3.0 A @ T_L = +80°C - Continuous average forward current rating under defined heatsink condition; determines steady-state power handling.
V_FM	0.79 V @ I_F = 3.0A - Forward voltage drop directly impacts conduction loss and thermal rise in high-current paths.
I_FSM	100 A (8.3 ms half-sine) - Peak surge current capacity; critical for surviving inrush or fault transients without bond-wire failure.
I_RM	20 mA @ +100°C - Reverse leakage at max operating temperature; affects standby power and thermal runaway risk in parallel configurations.
C_J	250 pF @ 4.0V, 1.0 MHz - Junction capacitance influences switching speed, EMI generation, and resonant behavior in flyback/freewheeling nodes.
R_θJA	20 K/W - Thermal resistance from junction to ambient; used to calculate ΔT_J = P_LOSS × R_θJA for reliability margining.

Pinout & Package

DO-201AD package: axial-leaded, molded plastic body (UL 94V-0), cathode band marking, tin-plated terminals, 1.1 g mass. Mounting requires 9.5 mm clearance from case to ambient per thermal rating.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side (e.g., switch node in buck converter); must withstand full I_O and I_FSM.
Cathode	Forward current exit / reverse-blocking terminal	Marked by band; ties to higher-potential rail (e.g., output capacitor positive); blocks 100V reverse while leaking ≤20 mA at +100°C.

Key Features

Feature	Design Value
Guard ring die construction	Suppresses edge electric field concentration, improving transient voltage immunity and long-term reliability under repetitive surges.
Low forward voltage (0.79V)	Reduces conduction loss by ~35% vs. comparable Si PN rectifiers, lowering thermal load in compact power stages.
100A surge rating	Withstands motor startup currents or capacitor-charging spikes without parametric shift or catastrophic failure.
RoHS-compliant lead finish	Tin-plated terminals meet MIL-STD-202 solderability requirements and support lead-free reflow profiles up to 260°C.

Applications

Automotive Body Control Module (BCM)

Industrial DC-DC Converter

Use Scenario: Polarity reversal protection on 12V battery input to microcontroller power rail.

IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage during jump-start or reverse-battery connection.

Use Value: 100V V_RRM exceeds automotive load-dump transients; 0.79V V_FM minimizes voltage drop across protection path.

Use Scenario: Freewheeling path in synchronous buck converter output stage.

IC Role / Device Role / Timing Role: Provides low-loss current recirculation during high-side FET off-time.

Use Value: 250pF C_J limits switching-node ringing; 3.0A I_O supports continuous 5–12V/2A output designs.

LED Driver Power Supply

Consumer Appliance Power Input

Use Scenario: Output rectification in isolated flyback LED driver for street lighting.

IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC for constant-current LED string.

Use Value: 20 K/W R_θJA enables natural-convection cooling in sealed enclosures; 150°C T_JMAX accommodates ambient up to 85°C.

Use Scenario: Input bridge leg in universal-input SMPS for washing machine control board.

IC Role / Device Role / Timing Role: Half-wave rectifier in auxiliary supply generating 5V/3.3V logic rails.

Use Value: 100A I_FSM survives NTC inrush limiting failure; RoHS-compliant finish ensures compliance with EU eco-design directives.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-3EY10	Same DO-201AD package, 100V V_RRM, but V_F = 0.82V @ 3A and I_FSM = 80A.	Lower surge tolerance reduces margin in high-inrush industrial controls.	Select when cost sensitivity outweighs surge headroom needs.
ON Semiconductor SB3100-E3/54	Identical electrical specs and DO-201AD footprint; differs only in tape-and-reel packaging (1.2K vs. 2K).	No functional difference; suitable for direct substitution where reel size aligns with SMT line setup.	Prefer for legacy line compatibility if existing feeders use 13" reels.

Compared with VS-3EY10 and SB3100-E3/54, the SB3100-B provides superior surge robustness (100A vs. 80A) and identical performance to ON's variant-making it optimal for automotive and high-reliability industrial power stages where transient immunity is critical.

Availability

SB3100-B is available at Aetrix Electronics and suitable for automotive body electronics, industrial DC-DC converters, LED driver power supplies, and consumer appliance power inputs requiring stable component supply and AEC-Q200-aligned manufacturing traceability.

Supply support for SB3100-B 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, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The SB3100-B belongs to Diodes' high-current Schottky rectifier product line, engineered for efficiency-critical 12V–48V power conversion in automotive, industrial, and consumer systems where low V_F and high surge resilience are mandatory.

FAQ

What is the maximum junction temperature for SB3100-B?

The SB3100-B has a specified operating junction temperature range of –65°C to +150°C. This allows reliable operation in under-hood automotive environments and enclosed industrial enclosures without active cooling, provided thermal design respects the 20 K/W R_θJA rating and power dissipation limits.

Is SB3100-B qualified to AEC-Q101?

No-SB3100-B is not AEC-Q101 qualified. Diodes offers AEC-Q101 versions under different part numbers (e.g., SB3100Q). The SB3100-B is manufactured in IATF 16949-certified facilities and supports PPAP documentation upon request, but formal qualification requires explicit Q101 testing and certification.

Can SB3100-B replace SB380 in existing designs?

Yes, with derating consideration: SB3100-B has higher V_RRM (100V vs. 80V) and identical I_O, V_FM, and package. It improves reverse voltage margin but requires verification that system-level transients do not exceed its 100V rating, especially in legacy 80V-rated circuits where overvoltage stress may be untested.

What is the recommended pad layout for DO-201AD in PCB design?

For optimal thermal performance, use ≥9.5 mm copper clearance from the diode body to ambient air, with minimum 25 mm² copper pour connected to each lead. Pad width should match lead diameter (1.2–1.3 mm), and trace width ≥1.5 mm is advised for 3.0A continuous routing to limit temperature rise below 40°C.

SB3100-B Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: DO-201AD, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Technology:: Schottky

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

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 790 mV @ 3 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 500 µA @ 100 V

Capacitance @ Vr, F:: 250pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-201AD

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

SB3100-B FAQ

1.How can I place an order for SB3100-B through Aetrix?

Please submit a Request for Quotation (RFQ) for SB3100-B 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 SB3100-B reliable?

The price and inventory of SB3100-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SB3100-B is usually 5 days.

3.What payment methods are accepted for SB3100-B?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SB3100-B transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SB3100-B?

SB3100-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SB3100-B 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 SB3100-B?

For technical support, including SB3100-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SB3100-B requirements.

6.How does Aetrix verify that SB3100-B is sourced from the original manufacturer or authorized distributors?

All SB3100-B 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 SB3100-B meets industry standards.

7.What is the process for return or replacement of SB3100-B?

All SB3100-B units undergo pre-shipment inspection (PSI). If there is an issue with SB3100-B, 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 SB3100-B part is unused and in its original packaging.

Return procedure for SB3100-B:

1.Submit a request within 90 days.

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

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