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

Diodes Incorporated SB1100-T

Name: SB1100-T
Brand: Diodes Incorporated
SKU: SB1100-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SB1100-T

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: DO-204AL, DO-41, Axial

Datasheet:: SB1100-T.pdf

Description:: SCHOTTKY DO15 100V 1A 150C

Quantity:: RFQ Add To RFQ list

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Inventory:9,669

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Product details

Overview

SB1100-T from Diodes Incorporated is a 1.0A, 100V Schottky barrier rectifier in DO-41 package, featuring 0.80V forward voltage at 1.0A, 25A non-repetitive surge rating, and 15K/W junction-to-lead thermal resistance. It serves as a low-loss freewheeling diode in DC-DC converters and polarity protection element in 12V/24V industrial power supplies.

For engineers reviewing the SB1100-T datasheet, SB1100-T pinout, SB1100-T application, or SB1100-T equivalent, key selection criteria include forward voltage drop under 1A load, peak reverse voltage margin for 24V rail transients, thermal performance in leaded through-hole layouts, and RoHS-compliant tin-plated leads for wave soldering compatibility.

Technical Context

This Schottky rectifier uses guard ring die construction to suppress transient-induced avalanche breakdown and improve ESD robustness. Its low 0.80V V_F minimizes conduction loss in high-frequency switching topologies operating up to several hundred kHz.

The device exhibits 80pF junction capacitance at 4V reverse bias and 1.0MHz, enabling fast recovery (<5ns) without minority carrier storage delay. Thermal design relies on lead heat sinking, with R_JL = 15K/W enabling 1.0A operation at T_L ≤ 85°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100V - Withstands repetitive reverse transients up to 100V in clamp or flyback configurations
I_O	1.0A @ T_L = 85°C - Continuous DC output current capability with lead temperature monitoring
V_FM	0.80V @ I_F = 1.0A - Reduces power loss to 0.8W per diode in series-fed paths
I_FSM	25A (8.3ms half-sine) - Handles inrush and short-circuit surge without bond wire fusing
C_j	80pF @ 4V, 1MHz - Limits capacitive coupling noise in high-dv/dt gate drive or snubber circuits
R_JL	15K/W - Enables direct thermal path from junction to PCB copper via leads, critical for manual soldering reliability

Pinout & Package

DO-41 axial-leaded package with cathode band marking; body diameter 4.1–5.2mm, length 25.4mm, lead diameter 0.71–0.86mm.

Pin/Terminal	Circuit Role	Design Meaning
Anode (unmarked end)	Current entry point during forward conduction	Connected to lower-potential node (e.g., switch node in buck converter)
Cathode (banded end)	Current exit point during forward conduction	Connected to output rail or ground return; polarity-sensitive for reverse blocking

Key Features

Feature	Design Value
Guard ring die construction	Suppresses edge leakage and improves transient immunity beyond standard Schottky limits
Lead-free, RoHS-compliant finish	Bright tin plating meets MIL-STD-202 solderability and withstands 260°C/10s reflow
UL 94V-0 molded plastic case	Self-extinguishing housing prevents flame propagation in enclosed power modules
25A surge rating (JEDEC method)	Supports 12V automotive load dump and motor commutation spikes without degradation

Applications

DC-DC Converter Freewheeling

Polarity Protection

Use Scenario: Used as catch diode in 24V input buck converter delivering 1.0A to FPGA core supply.

IC Role / Device Role / Timing Role: Freewheeling path for inductor current during high-side MOSFET off-time; conducts only during discontinuous conduction mode transitions.

Use Value: 0.80V V_F limits conduction loss to ≤0.8W, reducing thermal stress on PCB copper pour compared to silicon diodes.

Use Scenario: Placed in series with 24V input rail of programmable logic controller (PLC) I/O module.

IC Role / Device Role / Timing Role: Reverse polarity blocking element; remains reverse-biased during normal operation and clamps fault current if supply is reversed.

Use Value: 100V V_RRM provides 4× margin over 24V nominal rail, accommodating line surges up to ±40V without breakdown.

Motor Drive Flyback Clamp

Low-Voltage AC Adapter Output Rectification

Use Scenario: Clamping diode across brushed DC motor terminals in battery-powered actuator.

IC Role / Device Role / Timing Role: Suppresses inductive kickback voltage spikes during PWM turn-off; conducts brief high-current pulses at motor commutation edges.

Use Value: 25A I_FSM rating absorbs 10–20A transient spikes without parametric shift or bond wire failure.

Use Scenario: Output rectifier in 12V/1.0A wall adapter for IoT sensor hub.

IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC; operates continuously at 1.0A average current.

Use Value: 15K/W R_JL allows direct heat transfer to PCB traces, eliminating need for heatsink in compact adapter enclosure.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SS110-E3/5AT (Vishay)	Same DO-41 package, 1.0A/100V rating, but V_F = 0.85V @ 1.0A and R_JL = 18K/W	Slightly higher conduction loss and reduced thermal efficiency in lead-sinked layouts	Prefer SB1100-T where board-level thermal management is constrained
1N5819TR (ON Semiconductor)	Lower 40V V_RRM, same 1.0A rating, V_F = 0.475V @ 1.0A, but no guard ring structure	Unsuitable for 24V+ systems; lacks transient hardening for motor or inductive loads	Select SB1100-T when reverse voltage >40V or surge immunity is required

Compared with SS110-E3/5AT and 1N5819TR, SB1100-T delivers superior thermal performance (15K/W vs. 18K/W), higher reverse voltage headroom (100V vs. 40V), and integrated transient protection-making it optimal for 24V industrial power rails where reliability under surge and thermal stress is critical.

Availability

SB1100-T is available at Aetrix Electronics and suitable for DC-DC converters, motor drive clamping circuits, polarity protection in PLC modules, and low-voltage AC adapter rectification requiring stable component supply and full tape-and-reel logistics support.

Supply support for SB1100-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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.

The SBx100 series targets cost-sensitive, high-volume power conversion applications demanding robust Schottky performance in legacy through-hole packages, especially where thermal reliability and surge tolerance are prioritized over ultra-low V_F.

FAQ

What is the maximum allowable lead temperature during hand soldering?

The SB1100-T supports high-temperature soldering at 260°C for 10 seconds per J-STD-020C, verified by Diodes Incorporated's qualification testing. This enables reliable assembly using standard wave or selective soldering processes without degrading junction integrity or plating adhesion.

Does SB1100-T require derating for capacitive loads?

Yes-per the datasheet, average forward current must be derated by 20% when used with capacitive loads due to increased peak charging currents. At 85°C lead temperature, rated I_O drops from 1.0A to 0.8A to maintain junction temperature within −65°C to +125°C limits.

Is the DO-41 package compatible with automated through-hole insertion equipment?

Yes-the SB1100-T in DO-41 package meets IPC-7351B standards for axial-leaded components and is qualified for use with standard automated insertion machines. Lead spacing (25.4mm) and diameter (0.71–0.86mm) comply with JEDEC DO-41 mechanical specifications for feed, orientation, and placement accuracy.

How does the guard ring construction improve reliability?

The guard ring die structure reduces electric field crowding at the silicon periphery, suppressing surface leakage and preventing premature avalanche breakdown during voltage transients. This extends operational life in environments with repetitive 25A surge events or rapid dv/dt switching, as confirmed in Diodes' AEC-Q101 stress testing reports.

SB1100-T Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: DO-204AL, DO-41, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Schottky

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

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 800 mV @ 1 A

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

Reverse Recovery Time (trr):: -

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

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-41

Operating Temperature - Junction:: -65°C ~ 125°C

SB1100-T FAQ

1.How can I place an order for SB1100-T through Aetrix?

Please submit a Request for Quotation (RFQ) for SB1100-T 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 SB1100-T reliable?

The price and inventory of SB1100-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SB1100-T is usually 5 days.

3.What payment methods are accepted for SB1100-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SB1100-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SB1100-T?

SB1100-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SB1100-T 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 SB1100-T?

For technical support, including SB1100-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SB1100-T requirements.

6.How does Aetrix verify that SB1100-T is sourced from the original manufacturer or authorized distributors?

All SB1100-T 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 SB1100-T meets industry standards.

7.What is the process for return or replacement of SB1100-T?

All SB1100-T units undergo pre-shipment inspection (PSI). If there is an issue with SB1100-T, 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 SB1100-T part is unused and in its original packaging.

Return procedure for SB1100-T:

1.Submit a request within 90 days.

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

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