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Diodes Incorporated B3100-13-F
- Part No.:
- B3100-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
B3100-13-F.pdf
- Description:
- DIODE SCHOTTKY 100V 3A SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,453
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Product details
Overview
B3100-13-F from Diodes Incorporated is a 3.0A, 100V peak repetitive reverse voltage Schottky barrier rectifier in SMC package, featuring low forward voltage (0.79V @ 3A, 25°C), 100A non-repetitive surge rating, and guard ring die construction for transient protection. It serves as a high-efficiency freewheeling diode in DC-DC converters and polarity protection element in 12V/24V automotive power rails.
For engineers reviewing the B3100-13-F datasheet, B3100-13-F pinout, B3100-13-F application, or B3100-13-F equivalent, key selection criteria include forward voltage at operating current, thermal resistance (RθJT = 10°C/W), surge capability (100A @ 8.3ms), and RoHS-compliant matte tin plating for lead-free assembly.
Technical Context
This Schottky rectifier uses platinum-silicide or similar low-barrier metal-semiconductor junction to achieve fast switching (no minority carrier storage) and low conduction loss. Its guard ring structure enhances ruggedness against voltage transients without requiring external snubbers in inductive load circuits.
The device operates across -55°C to +125°C junction temperature range with derated average current (e.g., ~2.1A at TJ = 100°C per Fig. 3), and exhibits 100pF total capacitance at 4V reverse bias - critical for EMI control in high-frequency (>100kHz) switching topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse voltage before breakdown; sets usable input voltage headroom in 48V systems. |
| IO @ TT=90°C | 3.0 A - Continuous DC output current capability with heatsink or PCB copper area meeting terminal temperature limit. |
| VF @ 3A, 25°C | 0.79 V - Forward drop determines conduction loss (2.37W @ 3A); lower than silicon diodes by ~0.3V. |
| IFSM | 100 A - Single half-sine surge rating enables survival during motor startup or hot-plug events. |
| RθJT | 10 °C/W - Thermal resistance from junction to terminal; defines minimum copper pad area needed for thermal management. |
| IR @ VR=100V, 25°C | 0.5 mA - Reverse leakage impacts standby power in battery-backed circuits; higher than silicon but acceptable for most SMPS. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount molded plastic case with UL 94V-0 flammability rating, cathode band marking, and matte tin-plated terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point under forward bias | Connected to lower-potential node (e.g., switch node in buck converter); requires low-inductance layout. |
| Cathode | Current exit point under forward bias | Marked with band; ties to output rail or ground return path; carries full load current and ripple. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves transient voltage immunity (e.g., ISO 7637-2 pulse 1/2a) without external TVS, reducing BOM count. |
| Lead-free / RoHS compliant finish | Matte tin plating meets JEDEC J-STD-020 Level 1 moisture sensitivity and Pb-free reflow profiles (peak 260°C). |
| Green molding compound | Halogen-free, antimony-free epoxy eliminates toxic gas emission during PCB rework or fire scenarios. |
| Low thermal resistance | RθJT = 10°C/W enables direct thermal coupling to PCB ground plane for passive cooling in space-constrained designs. |
Applications
| DC-DC Converter Freewheeling | Automotive Polarity Protection |
|---|---|
Use Scenario: Used as synchronous rectifier or freewheeling diode in 200–500kHz buck converters powering infotainment ECUs. IC Role / Device Role / Timing Role: Provides low-loss current path during high-side MOSFET off-time; no recovery delay ensures minimal switching loss. Use Value: 0.79V VF reduces conduction loss by >40% vs. standard PN diode, improving efficiency from 88% to 91% at 3A load. | Use Scenario: Placed in series with battery feed to prevent damage from reverse battery connection in telematics modules. IC Role / Device Role / Timing Role: Acts as unidirectional current valve; blocks reverse current while passing 3A nominal load with minimal voltage drop. Use Value: 0.79V drop preserves >96% of 12V supply at full load, avoiding brownout in microcontroller subsystems. |
| Industrial Power Supply Output | LED Driver Secondary Rectification |
Use Scenario: Output rectifier in 48V-input, 5V/3A isolated flyback supplies for PLC I/O modules. IC Role / Device Role / Timing Role: Converts transformer secondary AC to regulated DC; handles continuous 3A with 100A surge margin for capacitor charging. Use Value: 100A IFSM withstands inrush into bulk capacitors without degradation, extending service life beyond 10 years. | Use Scenario: Secondary-side rectifier in constant-current LED drivers for street lighting (24–48V output). IC Role / Device Role / Timing Role: Delivers stable DC to LED string; low CT (≤100pF) minimizes high-frequency noise coupling into current-sense feedback. Use Value: 100pF capacitance at 4V reverse bias suppresses EMI above 30MHz, easing CISPR-15 compliance testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS310H-TP (Micro Commercial) | Same 100V VRRM, 3A IO, but RθJT = 12°C/W; VF = 0.85V @ 3A, 25°C. | Slightly higher conduction loss; less suitable for thermally constrained layouts. | Acceptable where board space allows larger copper pour or ambient < 60°C. |
| SB3100-E3/52 (Vishay) | Identical 100V/3A rating, same SMC package, but IR = 0.3mA @ 100V/25°C (lower leakage). | Better for low-power standby modes; identical thermal and surge performance. | Preferred in battery-powered devices requiring ultra-low quiescent current. |
Compared with SS310H-TP and SB3100-E3/52, B3100-13-F offers the lowest forward voltage (0.79V) among the three, delivering highest efficiency in high-duty-cycle applications, while its guard ring design provides superior transient robustness over SB3100-E3/52 in noisy industrial environments.
Availability
B3100-13-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC-DC power supplies, LED driver secondary stages, and telecom power interface circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for B3100-13-F 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 B3100-13-F belongs to Diodes' high-voltage Schottky rectifier product line, engineered specifically for efficiency-critical, high-reliability power conversion in automotive and industrial applications where low VF and rugged surge handling are mandatory.
FAQ
What is the maximum junction temperature for continuous operation?
The B3100-13-F has a specified operating junction temperature range of -55°C to +125°C. For continuous operation at rated 3.0A average current, the terminal temperature must be maintained at ≤90°C per datasheet derating curve (Fig. 3). Exceeding this requires thermal design mitigation such as increased copper area or forced airflow.
Is B3100-13-F suitable for synchronous rectification?
No - B3100-13-F is a passive Schottky rectifier, not a synchronous rectifier IC or MOSFET-based solution. It functions as a unidirectional conductor with inherent forward voltage drop and cannot be actively controlled. It replaces PN diodes in freewheeling paths but does not support gate-driven synchronous operation.
Does this part meet AEC-Q101 requirements for automotive use?
No - B3100-13-F is not AEC-Q101 qualified. While widely used in automotive aftermarket and non-safety-critical modules (e.g., infotainment, lighting), it lacks the stress test documentation required for front-end or safety-related ECUs. Diodes' AEC-Q101-qualified equivalents include the B3100Q-13-F variant.
How does the guard ring construction improve reliability?
The guard ring die structure distributes electric field stress away from the active junction edge, raising the effective breakdown voltage margin during fast transients (e.g., load dump pulses). This prevents localized avalanche and premature failure without adding external clamping components, directly enhancing field reliability in 12V/24V vehicle electrical systems.
B3100-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-F FAQ
1.How can I place an order for B3100-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for B3100-13-F 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-F reliable?
The price and inventory of B3100-13-F 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-F is usually 5 days.
3.What payment methods are accepted for B3100-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B3100-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B3100-13-F?
B3100-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B3100-13-F 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-F?
For technical support, including B3100-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B3100-13-F requirements.
6.How does Aetrix verify that B3100-13-F is sourced from the original manufacturer or authorized distributors?
All B3100-13-F 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-F meets industry standards.
7.What is the process for return or replacement of B3100-13-F?
All B3100-13-F units undergo pre-shipment inspection (PSI). If there is an issue with B3100-13-F, 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-F part is unused and in its original packaging.
Return procedure for B3100-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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