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Diodes Incorporated SB3100-T
- Part No.:
- SB3100-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SB3100-T.pdf
- Description:
- SCHOTTKY DO201 100V 3A 150C
- Quantity:
- Payment:
- Shipping:
Inventory:3,803
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Product details
Overview
SB3100-T from Diodes Incorporated is a 3.0A, 100V Schottky barrier rectifier in DO-201AD package, featuring 0.79V forward voltage at 3.0A, 100A non-repetitive surge capability, and 250pF junction capacitance. It serves as a low-loss freewheeling or polarity protection diode in DC-DC converters and automotive power supplies.
For engineers reviewing the SB3100-T datasheet, SB3100-T pinout, SB3100-T application, or SB3100-T equivalent, key selection criteria include its 100V VRRM rating, thermal resistance of 20K/W, RoHS-compliant tin-plated terminals, and suitability for high-frequency switching up to 1MHz with minimal conduction loss.
Technical Context
This Schottky rectifier uses guard ring die construction to enhance transient robustness and suppress leakage under high reverse bias. Its low forward voltage drop and fast recovery (inherent to Schottky architecture) minimize power dissipation in high-current, low-voltage output stages.
The device operates across –65°C to +150°C junction temperature range and exhibits stable reverse current up to 20mA at 100°C, supporting reliable performance in under-hood automotive environments and industrial power modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in polarity protection and flyback clamp circuits. |
| IF(AV) | 3.0 A - Average forward current at TL = +80°C; supports continuous 3A load in compact PCB layouts with adequate heatsinking. |
| VFM | 0.79 V @ 3.0A - Low conduction loss reduces heat generation and improves efficiency in 5–12V DC-DC outputs. |
| IFSM | 100 A - Peak surge rating for 8.3ms half-sine; withstands inrush and fault currents in motor drive and battery input stages. |
| CJ | 250 pF @ 4V, 1MHz - Junction capacitance impacts high-frequency switching noise and EMI filtering requirements. |
| RθJA | 20 K/W - Thermal resistance from junction to ambient; enables ~1.5W power dissipation at +80°C ambient without forced cooling. |
Pinout & Package
DO-201AD molded plastic package with axial leads, cathode band marking, UL 94V-0 flammability rating, and 1.1g mass. Moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side (e.g., ground return or switch node) in freewheeling paths. |
| Cathode | Current exit point during forward conduction; marked with band | Connected to higher-potential rail (e.g., input supply or inductor output) to enable unidirectional current flow. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves transient immunity and prevents edge breakdown under voltage stress, extending reliability in noisy automotive environments. |
| Low forward voltage (0.79V) | Reduces conduction loss by >30% vs. comparable silicon rectifiers, lowering thermal load in space-constrained designs. |
| 100A surge rating | Supports robust operation during cold-crank events and load dump transients without derating in 12V systems. |
| RoHS-compliant tin finish | Ensures solderability per MIL-STD-202 Method 208 and compatibility with lead-free reflow profiles. |
Applications
| Automotive Body Control Module (BCM) | Industrial DC-DC Converter Output Stage |
|---|---|
Use Scenario: Reverse polarity protection on 12V battery input to microcontroller-based lighting and door control units. IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage from accidental battery reversal. Use Value: 100V VRRM margin accommodates load dump spikes up to 35V; 0.79V VF minimizes voltage drop across protection path. | Use Scenario: Freewheeling diode in synchronous buck converter output stage delivering 3.3V/2.5A to FPGA core logic. IC Role / Device Role / Timing Role: Provides low-loss current path during high-side MOSFET off-time to maintain inductor current continuity. Use Value: 250pF junction capacitance limits high-frequency ringing; 3.0A average rating matches converter peak inductor current. |
| Telecom Power Supply Input Protection | Consumer USB-C PD Adapter Secondary Side |
Use Scenario: Polarity guard on redundant 48V DC input rails feeding telecom shelf management boards. IC Role / Device Role / Timing Role: Standby-blocking diode ensuring only one input source powers downstream circuitry. Use Value: 20K/W RθJA allows operation at full 3A load in sealed enclosures; DO-201AD mechanical robustness resists vibration fatigue. | Use Scenario: Output rectification in 20W USB-C PD adapter using quasi-resonant flyback topology. IC Role / Device Role / Timing Role: High-frequency secondary-side rectifier replacing slower silicon diodes to improve efficiency above 100kHz. Use Value: Schottky architecture eliminates reverse recovery loss; 0.79V VF directly improves conversion efficiency by ~1.2% at full load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS310H from Diodes Inc. | Same 100V VRRM and 3A rating, but SMC (DO-214AB) package; 0.85V VF at 3A. | Surface-mount footprint replaces through-hole DO-201AD; requires PCB redesign. | Select when automated assembly and board space reduction outweigh manual insertion cost. |
| SB3100-E3/54 from Vishay | Identical electrical specs and DO-201AD package; RoHS-compliant, same 0.79V VF and 100A IFSM. | Drop-in replacement with identical mechanical and thermal behavior; qualified to AEC-Q101. | Choose for dual-sourcing or automotive PPAP programs requiring alternate qualified suppliers. |
Compared with SS310H and SB3100-E3/54, the SB3100-T offers identical performance in through-hole form factor with optimized thermal resistance for hand-soldered prototypes and legacy industrial assemblies, while SB3100-E3/54 adds AEC-Q101 qualification for automotive production use.
Availability
SB3100-T is available at Aetrix Electronics and suitable for automotive body control modules, industrial DC-DC converters, and telecom power supply input protection requiring stable component supply and long-term manufacturability.
Supply support for SB3100-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, manufacturing, and sales operations across Asia, Europe, and the Americas.
The SB3x00 series targets high-efficiency power conversion in cost-sensitive, high-volume applications-specifically engineered for low-VF, high-surge Schottky rectification in automotive, industrial, and consumer power supplies.
FAQ
What is the maximum junction temperature for SB3100-T?
The SB3100-T has a specified operating junction temperature range of –65°C to +150°C. This allows uninterrupted operation in under-hood automotive environments and high-ambient industrial settings, provided thermal design maintains TJ ≤ 150°C under worst-case power dissipation and ambient conditions.
Is SB3100-T suitable for use in AEC-Q101 qualified designs?
The SB3100-T itself is not AEC-Q101 qualified per Diodes' documentation; however, the functionally identical SB3100-E3/54 from Vishay is AEC-Q101 qualified. For automotive production, engineers should verify qualification status with Diodes or select an AEC-Q101-certified alternative.
How does the DO-201AD package affect thermal performance?
The DO-201AD package delivers a typical RθJA of 20K/W, enabling ~1.5W power dissipation at +80°C ambient without heatsinking. Its axial-leaded form provides mechanical stability and ease of manual soldering, though thermal performance is inferior to surface-mount packages like SMC under forced-air cooling.
Can SB3100-T replace SB380-T in existing designs?
Yes, SB3100-T can replace SB380-T where higher reverse voltage margin is required: both share identical 3.0A current rating, DO-201AD package, and thermal characteristics, but SB3100-T offers 100V VRRM versus SB380-T's 80V, improving safety margin in 48V systems and load-dump scenarios.
SB3100-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- 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:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -65°C ~ 150°C
SB3100-T FAQ
1.How can I place an order for SB3100-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SB3100-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 SB3100-T reliable?
The price and inventory of SB3100-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SB3100-T is usually 5 days.
3.What payment methods are accepted for SB3100-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SB3100-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SB3100-T?
SB3100-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SB3100-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 SB3100-T?
For technical support, including SB3100-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SB3100-T requirements.
6.How does Aetrix verify that SB3100-T is sourced from the original manufacturer or authorized distributors?
All SB3100-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 SB3100-T meets industry standards.
7.What is the process for return or replacement of SB3100-T?
All SB3100-T units undergo pre-shipment inspection (PSI). If there is an issue with SB3100-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 SB3100-T part is unused and in its original packaging.
Return procedure for SB3100-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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