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Diodes Incorporated B2100SAF-13
- Part No.:
- B2100SAF-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
B2100SAF-13.pdf
- Description:
- DIODE SCHOTTKY 100V 2A SMAF
- Quantity:
- Payment:
- Shipping:
Inventory:9,045
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Product details
Overview
B2100SAF 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 max reverse leakage at 100V/25°C, and thermal resistance of 90°C/W (junction-to-ambient). It serves as a high-efficiency boost diode in DC-DC converters for industrial power supplies.
For engineers reviewing the B2100SAF datasheet, B2100SAF pinout, B2100SAF application, or B2100SAF equivalent, key selection criteria include forward voltage drop at elevated temperature, reverse leakage stability up to +150°C, junction-to-case thermal resistance (30°C/W), and RoHS-compliant matte tin annealed terminals on copper leadframe.
Technical Context
This Schottky rectifier uses a planar epitaxial construction with low-resistance metal-semiconductor junction to achieve reduced forward voltage and minimized switching losses. Its 93pF typical junction capacitance at 4V/1MHz supports high-frequency operation in SMPS topologies.
The device operates across –55°C to +150°C with derated forward current above +25°C (e.g., ~1.3A at +100°C), and exhibits <2mA IR at 100V/125°C - critical for thermal runaway mitigation in compact, convection-cooled designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100V - maximum repetitive reverse voltage before breakdown; defines safe blocking capability in boost/flyback circuits |
| IO(AV) | 2A - average forward current rating at TA=25°C; derates to ~1.3A at +100°C per Figure 4 |
| VF(max) | 0.79V @ 2A, 25°C - low conduction loss improves efficiency; rises to 0.74V at 125°C |
| IR(max) | 10µA @ 100V, 25°C - ultra-low leakage ensures stable operation; increases to 2mA at 125°C |
| RθJA | 90°C/W - thermal resistance limits junction temperature rise under natural convection on FR-4 PCB |
| CT(typ) | 93pF @ 4V, 1MHz - low junction capacitance enables fast switching in >100kHz converters |
Pinout & Package
SMAF package: surface-mount, low-profile (max height 1.10mm), molded green plastic (UL 94V-0), cathode band marking, 0.036g weight. Terminals are matte tin annealed over copper leadframe, solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to input/source side in boost configuration; requires low-inductance layout |
| Cathode | Current exit point during forward conduction; marked by band | Connected to switch node/output; polarity must be verified to prevent reverse bias failure |
Key Features
| Feature | Design Value |
|---|---|
| Low VF at high temperature | 0.74V @ 2A/125°C - maintains efficiency in thermally constrained enclosures |
| Stable high-temp IR | 2mA @ 100V/125°C - prevents thermal runaway in ambient >85°C applications |
| Green compound packaging | Halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb) - meets IPC-1752A environmental compliance |
| Moisture sensitivity level | MSL Level 1 - no bake requirement prior to reflow; simplifies SMT assembly |
Applications
| Boost Diode in DC-DC Converters | Blocking Diode in Solar Charge Controllers |
|---|---|
Use Scenario: Used in non-isolated boost converters to transfer energy from input to output capacitor during MOSFET off-time. IC Role / Device Role / Timing Role: Unidirectional current path enabling voltage step-up; conducts only when switch is off. Use Value: 0.79V VF minimizes conduction loss; 93pF CT reduces switching noise and EMI in 300kHz–1MHz designs. | Use Scenario: Prevents reverse current flow from battery to PV panel at night or low-light conditions. IC Role / Device Role / Timing Role: Reverse-polarity protection element; blocks DC path while sustaining 100V open-circuit PV voltage. Use Value: 10µA IR at 25°C and <2mA at 125°C ensures minimal nighttime battery drain in outdoor installations. |
| Recirculating Diode in Motor Drivers | Output Rectifier in AC-DC Adapters |
Use Scenario: Provides freewheeling path for inductive kickback current when H-bridge low-side MOSFETs turn off. IC Role / Device Role / Timing Role: Clamp diode absorbing stored inductor energy; activated synchronously with PWM dead time. Use Value: 60A IFSM withstands short-duration surge currents; low RθJC (30°C/W) aids heat dissipation during burst-mode operation. | Use Scenario: Rectifies high-frequency transformer secondary output in flyback or forward converter SMPS. IC Role / Device Role / Timing Role: High-speed unidirectional conduction stage converting AC to pulsating DC before filtering. Use Value: Fast recovery (inherent to Schottky) eliminates reverse recovery charge; reduces output ripple and transformer stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB2100-E3/52 (Vishay) | Same VRRM (100V), IO (2A), but VF = 0.85V @ 2A/25°C; SMA package (not SMAF) | 0.15mm taller package may impact board clearance; higher VF increases conduction loss by ~8% | Select if legacy SMA footprint compatibility required; verify thermal pad area matches |
| SS210H (ON Semiconductor) | Same SMAF package, but VF = 0.82V @ 2A/25°C; IR = 50µA @ 100V/25°C | Higher leakage reduces suitability for high-temp solar or automotive under-hood use | Prefer for cost-sensitive consumer adapters where ambient ≤70°C |
Compared with SB2100-E3/52 and SS210H, B2100SAF delivers the lowest VF (0.79V) and tightest IR spec (10µA), making it optimal for thermally demanding, efficiency-critical industrial and solar applications where SMAF's low profile is essential.
Availability
B2100SAF is available at Aetrix Electronics and suitable for DC-DC boost converters, solar charge controllers, motor driver recirculation paths, and AC-DC adapter rectification requiring stable component supply and RoHS-compliant sourcing.
Supply support for B2100SAF 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 B2100SAF belongs to Diodes' high-reliability Schottky rectifier product line, engineered for efficiency-critical power conversion in industrial, computing, and renewable energy systems where thermal stability and low conduction loss are primary design drivers.
FAQ
What is the maximum junction temperature for continuous operation?
The B2100SAF has an operating junction temperature range of –55°C to +150°C. Continuous operation at +150°C requires strict thermal design: derated IO to ~0.8A, use of thermal vias under the cathode pad, and minimum 2oz copper on FR-4 to maintain RθJA ≤90°C/W.
Is the B2100SAF suitable for synchronous rectification?
No - the B2100SAF is a passive Schottky rectifier, not a synchronous rectifier controller or MOSFET-based solution. It lacks gate drive interface or control logic; its role is fixed unidirectional conduction, not actively switched rectification.
Does the SMAF package support automated optical inspection (AOI)?
Yes - the SMAF package features a visible cathode band and coplanar matte tin terminals compatible with standard AOI systems. Its 0.90–1.10mm body height and defined pad layout (per Diodes' package outline PL-012) enable reliable solder-joint inspection.
How does reverse leakage change at elevated temperature?
IR increases exponentially with temperature: 10µA at 25°C, ~100µA at 85°C, and 2mA at 125°C (per DS39551 Figure 2). This behavior is inherent to Schottky physics and must be accounted for in high-temperature blocking applications like solar charge controllers.
B2100SAF-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-221AC, SMA Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 93pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMAF
- Operating Temperature - Junction:
- -55°C ~ 150°C
B2100SAF-13 FAQ
1.How can I place an order for B2100SAF-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B2100SAF-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 B2100SAF-13 reliable?
The price and inventory of B2100SAF-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B2100SAF-13 is usually 5 days.
3.What payment methods are accepted for B2100SAF-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B2100SAF-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B2100SAF-13?
B2100SAF-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B2100SAF-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 B2100SAF-13?
For technical support, including B2100SAF-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B2100SAF-13 requirements.
6.How does Aetrix verify that B2100SAF-13 is sourced from the original manufacturer or authorized distributors?
All B2100SAF-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 B2100SAF-13 meets industry standards.
7.What is the process for return or replacement of B2100SAF-13?
All B2100SAF-13 units undergo pre-shipment inspection (PSI). If there is an issue with B2100SAF-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 B2100SAF-13 part is unused and in its original packaging.
Return procedure for B2100SAF-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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