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

Diodes Incorporated B2100AF-13

Name: B2100AF-13
Brand: Diodes Incorporated
SKU: B2100AF-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: B2100AF-13

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: DO-221AC, SMA Flat Leads

Datasheet:: B2100AF-13.pdf

Description:: DIODE SCHOTTKY 100V 2A SMAF

Quantity:: RFQ Add To RFQ list

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Inventory:10,740

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Product details

Overview

B2100AF-13 from Diodes Incorporated is a 2.0A, 100V Schottky barrier rectifier in SMAF package, featuring 0.79V max forward voltage at 2A/25°C, ≤10µA reverse leakage at 100V/25°C, and thermal resistance R_θJA = 90°C/W. It serves as a high-efficiency boost or blocking diode in DC-DC converters and power supplies.

For engineers reviewing the B2100AF-13 datasheet, B2100AF-13 pinout, B2100AF-13 application, or B2100AF-13 equivalent, this page delivers verified electrical specs, thermal derating behavior, low-profile SMAF mechanical data, and real-world rectifier use cases - all critical for thermal-aware power stage design and RoHS-compliant production.

Technical Context

This Schottky rectifier uses a planar metal-semiconductor junction to achieve low forward conduction loss and fast recovery (no minority-carrier storage), enabling high-frequency switching operation without reverse recovery spikes. Its 100V V_RRM rating supports 48V bus-derived topologies and PoE-powered systems.

The device exhibits stable reverse leakage up to +125°C (≤2mA at 100V), with VF increasing only marginally from 0.60V (25°C) to 0.65V (125°C) at 2A - a key advantage over standard PN diodes in thermally constrained environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Withstands repetitive reverse voltage up to 100V, suitable for 48V input DC-DC stages with safety margin.
I_O	2 A - Continuous average forward current rating on FR-4 PCB per JEDEC standards.
V_F (max)	0.79 V @ 2A, 25°C - Enables <1.6W conduction loss at full load, reducing heatsink requirements.
I_R (max)	10 µA @ 100V, 25°C - Ensures minimal standby power loss in blocking configurations.
R_θJA	90 °C/W - Junction-to-ambient thermal resistance on standard 0.4"×0.5" single-sided FR-4 board.
I_FSM	75 A - Non-repetitive surge rating for handling inrush or fault transients in power rails.
T_J range	−55 to +150 °C - Supports operation in automotive under-hood and industrial ambient conditions.

Pinout & Package

Package: SMAF - surface-mount, low-profile (max height 1.10 mm), molded plastic case with matte tin–annealed copper leadframe, UL 94V-0 rated, moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry	Connected to lower-potential side (e.g., switch node in boost); requires adequate copper pour for thermal dissipation.
Cathode	Forward current exit / reverse-blocking terminal	Marked with cathode band; ties to higher-potential rail (e.g., output capacitor positive); defines polarity-sensitive placement.

Key Features

Feature	Design Value
Low forward voltage drop	0.79V max at 2A/25°C - reduces conduction loss by ~30% vs. comparable PN rectifiers, improving efficiency in 12–48V systems.
High-temperature leakage stability	≤2mA IR at 100V/125°C - prevents thermal runaway in compact enclosures where ambient exceeds 85°C.
Lead-free & halogen-free construction	RoHS 2 compliant, <900ppm Br/Cl, <1000ppm Sb - meets IPC-1752A environmental reporting and WEEE compliance requirements.
SMAF package footprint	4.00 mm × 2.50 mm body, 0.50–1.50 mm lead length - enables high-density layout in space-constrained AC/DC adapters and telecom modules.

Applications

Boost Diode in DC-DC Converters

Blocking Diode in Solar Charge Controllers

Use Scenario: Used in non-synchronous boost converters stepping 12V input to 24V/48V output.

IC Role / Device Role: Unidirectional current path during switch-off phase; blocks output voltage from discharging input rail.

Use Value: Low V_F minimizes voltage drop across diode, preserving regulation accuracy and efficiency at 2A load.

Use Scenario: Prevents reverse current flow from battery to PV panel at night or low-light conditions.

IC Role / Device Role: Reverse-biased isolation element; must sustain full battery voltage while leaking <10µA to avoid overnight discharge.

Use Value: Confirmed 10µA max IR at 25°C and stable leakage up to 125°C ensures >10-year battery float life in outdoor installations.

Recirculating Diode in Relay Drivers

Output Rectifier in 5V/12V SMPS

Use Scenario: Freewheeling path for inductive kickback when de-energizing 24V industrial relays.

IC Role / Device Role: Clamps flyback voltage spike to safe level (<100V), protecting driving transistor.

Use Value: 75A I_FSM rating handles transient energy without degradation; fast recovery avoids oscillation.

Use Scenario: Secondary-side rectification in isolated flyback or forward converters delivering 5V/12V at ≤2A.

IC Role / Device Role: Converts transformer AC output to regulated DC; operates continuously at full load.

Use Value: 90°C/W R_θJA allows direct mounting on PCB with minimal copper area, eliminating need for discrete heatsinks.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SS210H-TP (Micro Commercial)	Same 100V/2A rating; VF = 0.85V max @ 2A; R_θJA = 100°C/W; SMA package (slightly larger than SMAF).	Higher VF increases conduction loss by ~0.12W at 2A; less suitable for thermally tight 125°C ambient designs.	Select if cost sensitivity outweighs thermal margin; verify pad layout compatibility due to larger body.
SB2100-E3/52 (Vishay)	100V/2A; VF = 0.82V max @ 2A; R_θJA = 95°C/W; DO-214AA (SMB) package - 2.5× taller than SMAF.	Height constraint violation in ultra-low-profile assemblies; higher thermal resistance demands larger copper area.	Prefer only when existing SMB footprint is fixed; not recommended for new low-height designs.

Compared with SS210H-TP and SB2100-E3/52, the B2100AF-13 delivers the lowest VF and smallest form factor among 100V/2A Schottkys, making it optimal for thermally dense, height-limited power stages where efficiency and board space are prioritized.

Availability

B2100AF-13 is available at Aetrix Electronics and suitable for DC-DC converter design, solar charge control, relay driver protection, and SMPS output rectification requiring stable component supply and RoHS-compliant sourcing.

Supply support for B2100AF-13 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, specializing in high-efficiency power management and signal integrity solutions for industrial, computing, and consumer markets.

The B2100AF belongs to Diodes' SBR® (Schottky Barrier Rectifier) product line, engineered specifically for high-frequency, low-loss rectification in space- and thermally-constrained power conversion systems.

FAQ

What is the maximum junction temperature for continuous operation?

The B2100AF-13 has an absolute maximum junction temperature of +150°C. Continuous operation at this limit requires strict thermal design - including minimum 0.2" × 0.25" copper pad, airflow ≥200 LFM, or derating to ≤1.2A at 125°C ambient per Figure 4. Exceeding TJ(max) risks parametric shift and premature failure.

Is the SMAF package compatible with standard reflow profiles?

Yes - the SMAF package is qualified for lead-free reflow per J-STD-020 Level 1 (peak temp ≤260°C, 60–90 sec above 217°C). Matte tin–annealed terminals ensure reliable solder wetting; no pre-bake required due to MSL1 classification.

How does reverse leakage behave at elevated temperatures?

IR rises predictably with temperature: ≤10µA at 25°C, ≤2mA at 125°C, and ≤10mA at 150°C (per Figure 3). This controlled increase - unlike exponential runaway in PN diodes - enables stable blocking performance in hot environments without thermal feedback collapse.

Can B2100AF-13 replace a standard PN rectifier like 1N5822?

Yes, with design benefits: 0.79V VF vs. 0.9V for 1N5822 reduces conduction loss by ~22%, and zero reverse recovery eliminates switching noise. However, maximum V_RRM is identical (100V), so voltage margin remains unchanged; layout must respect SMAF's smaller pad footprint versus DO-201AD.

B2100AF-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: DO-221AC, SMA Flat Leads

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Schottky

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

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 790 mV @ 2 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 10 µA @ 100 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMAF

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

B2100AF-13 FAQ

1.How can I place an order for B2100AF-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for B2100AF-13 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 B2100AF-13 reliable?

The price and inventory of B2100AF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B2100AF-13 is usually 5 days.

3.What payment methods are accepted for B2100AF-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B2100AF-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for B2100AF-13?

B2100AF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your B2100AF-13 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 B2100AF-13?

For technical support, including B2100AF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B2100AF-13 requirements.

6.How does Aetrix verify that B2100AF-13 is sourced from the original manufacturer or authorized distributors?

All B2100AF-13 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 B2100AF-13 meets industry standards.

7.What is the process for return or replacement of B2100AF-13?

All B2100AF-13 units undergo pre-shipment inspection (PSI). If there is an issue with B2100AF-13, 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 B2100AF-13 part is unused and in its original packaging.

Return procedure for B2100AF-13:

1.Submit a request within 90 days.

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

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