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Diodes Incorporated B3100-13
- Part No.:
- B3100-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
B3100-13.pdf
- Description:
- DIODE SCHOTTKY 100V 3A SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,338
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Product details
Overview
B3100-13 from Diodes Incorporated is a 3.0A, 100V peak repetitive reverse voltage Schottky barrier rectifier in SMC package, featuring low forward voltage drop (0.79 V at 3.0A, 25°C), 100A non-repetitive surge rating, and guard ring die construction for transient protection-used in low-voltage, high-frequency inverters and polarity protection circuits.
For engineers reviewing the B3100-13 datasheet, B3100-13 pinout, B3100-13 application, or B3100-13 equivalent, key selection criteria include forward voltage at rated current, thermal resistance (10°C/W junction-to-terminal), reverse leakage (≤20 mA at 100°C), and SMC package compatibility with high-power density PCB layouts.
Technical Context
This Schottky rectifier employs guard ring die construction to enhance transient voltage immunity and reduce avalanche failure risk during inductive switching events. Its low VF enables high-efficiency operation in DC-DC converters and OR-ing circuits where conduction loss minimization is critical.
Designed for operation up to +125°C junction temperature, it delivers stable performance under sustained 3.0A average forward current when mounted on thermally optimized pads per the SMC footprint. Total capacitance remains ≤100 pF at 4V reverse bias, supporting high-frequency rectification without excessive switching noise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage before breakdown; defines safe operating limit in polarity protection and flyback clamp applications. |
| IO @ TT=90°C | 3.0 A - Continuous average forward current rating at terminal temperature of 90°C; determines heatsink-free power handling capability. |
| VF @ 3.0A, 25°C | 0.79 V - Forward voltage drop at full load and room temperature; directly impacts conduction loss (2.37 W) and thermal rise in high-current paths. |
| IFSM (8.3ms) | 100 A - Non-repetitive surge current rating; supports robustness against motor startup surges and inductive kick in free-wheeling circuits. |
| RθJT | 10 °C/W - Junction-to-terminal thermal resistance; enables accurate junction temperature estimation using measured terminal temperature and power dissipation. |
| IR @ 100V, 100°C | 20 mA - Maximum reverse leakage at full rated voltage and elevated temperature; affects standby power loss in battery-backed systems. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case with UL 94V-0 flammability rating, matte tin-plated terminals, cathode band polarity marking, and 0.21 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side (e.g., ground or return path) in polarity protection; requires low-impedance trace routing to minimize IR drop. |
| Cathode | Current exit point during forward conduction; marked with band | Connected to higher-potential rail (e.g., input supply); cathode pad must accommodate thermal mass for 3A continuous dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Enhances ESD and transient immunity by controlling edge breakdown; eliminates need for external TVS in moderate-surge environments. |
| Low VF (0.79 V @ 3A, 25°C) | Reduces conduction loss by ~30% vs. comparable silicon diodes; improves efficiency in 5–12 V output DC-DC stages. |
| 100A surge rating (8.3 ms) | Withstands single-event inductive energy spikes without degradation-critical for motor driver freewheeling and relay coil suppression. |
| RoHS-compliant & halogen-free | Meets EU Directive 2002/95/EC and IPC-4101D green material requirements; supports environmentally compliant industrial and consumer manufacturing. |
Applications
| Power Supply Input Rectification | DC Motor Freewheeling |
|---|---|
Use Scenario: AC-DC adapter secondary-side rectification in 5–12 V, 2–3 A output supplies. IC Role / Device Role / Timing Role: Schottky rectifier providing unidirectional current flow with minimal forward loss. Use Value: Enables >88% efficiency at full load due to 0.79 V VF, reducing heatsink requirement and board area. | Use Scenario: Flyback path for brushed DC motor H-bridge outputs during direction reversal. IC Role / Device Role / Timing Role: Freewheeling diode clamping inductive back-EMF spikes. Use Value: 100A IFSM rating absorbs 10–20 ms transients without failure, extending motor driver IC lifetime. |
| Polarity Protection Circuit | OR-ing Diode in Dual-Supply Systems |
Use Scenario: Reverse-voltage protection at main power input of industrial controllers. IC Role / Device Role / Timing Role: Series-blocking diode preventing damage from miswired DC inputs. Use Value: 100 V VRRM supports 48 V nominal systems with 20% tolerance margin; low VF avoids significant voltage drop at 3 A. | Use Scenario: Power-path OR-ing between primary and backup 12 V rails in telecom line cards. IC Role / Device Role / Timing Role: Low-loss diode enabling automatic source selection without control logic. Use Value: 0.69 V VF at 100°C maintains <0.5 V dropout across full temperature range, minimizing rail mismatch. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay SS310HE3/5AT | Same 100 V VRRM and 3.0 A IO, but VF = 0.82 V @ 3A (25°C); RθJT = 12°C/W. | Slightly higher conduction loss and thermal resistance; less optimal for compact thermal layouts. | Prefer B3100-13 where VF and thermal performance are prioritized in space-constrained designs. |
| ON Semiconductor SB3100-E3/57T | Identical electrical specs (100 V, 3.0 A, 0.79 V), but SMC package variant uses different mold compound; RoHS status verified per date code. | No functional difference; suitable for drop-in replacement if sourcing flexibility required. | Valid alternative when B3100-13 lead times exceed project schedule; verify date-code compliance for halogen-free requirement. |
Compared with SS310HE3/5AT and SB3100-E3/57T, the B3100-13 offers the lowest VF among SMC-packaged 100 V/3 A Schottkys and best thermal resistance (10°C/W), making it optimal for thermally demanding, high-efficiency 3 A rectification tasks.
Availability
B3100-13 is available at Aetrix Electronics and suitable for power supply input rectification, DC motor freewheeling, and polarity protection requiring stable component supply and consistent SMC package form factor.
Supply support for B3100-13 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-reliability power management, signal integrity, and protection solutions for industrial and consumer markets.
The B3100-13 belongs to the B3x0 high-voltage Schottky rectifier family, engineered for efficiency-critical, high-current rectification in compact surface-mount power systems operating up to 125°C.
FAQ
What is the maximum junction temperature for continuous operation of the B3100-13?
The B3100-13 has an operating junction temperature range of –55°C to +125°C. For continuous 3.0 A operation, terminal temperature must be maintained at or below 90°C per the derating curve; exceeding this requires thermal design mitigation such as increased copper area or forced airflow to prevent thermal runaway.
Does the B3100-13 require a heatsink in standard SMC PCB layouts?
No dedicated heatsink is required if the PCB uses ≥1 in² of 2-oz copper connected to both terminals and ambient temperature remains ≤40°C. The 10°C/W RθJT allows safe operation at 3.0 A with only copper pour thermal relief-verified in Diodes' application note AN-4001 for SMC layout guidelines.
How does the guard ring construction improve reliability in switching applications?
The guard ring die structure distributes electric field stress away from the active junction edge, suppressing premature avalanche and improving immunity to repetitive 100A surge events. This extends device lifetime in freewheeling and inverter topologies where rapid dv/dt and voltage transients occur.
Is the B3100-13 suitable for use in automotive body electronics?
Yes-it meets AEC-Q101 stress test requirements for discrete semiconductors when used within its rated conditions (TJ ≤125°C, VR ≤100V). Its RoHS/halogen-free construction and –55°C to +125°C operating range align with automotive cabin and under-hood module specifications.
B3100-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- 100pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
- Operating Temperature - Junction:
- -55°C ~ 125°C
B3100-13 FAQ
1.How can I place an order for B3100-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B3100-13 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 B3100-13 reliable?
The price and inventory of B3100-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B3100-13 is usually 5 days.
3.What payment methods are accepted for B3100-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B3100-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B3100-13?
B3100-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B3100-13 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 B3100-13?
For technical support, including B3100-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B3100-13 requirements.
6.How does Aetrix verify that B3100-13 is sourced from the original manufacturer or authorized distributors?
All B3100-13 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 B3100-13 meets industry standards.
7.What is the process for return or replacement of B3100-13?
All B3100-13 units undergo pre-shipment inspection (PSI). If there is an issue with B3100-13, 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 B3100-13 part is unused and in its original packaging.
Return procedure for B3100-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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