Counterfeit and defect prevention
Visual and packaging inspection
Electrical performance verification
Service Email:
[email protected]
>
SS310B
MDD
DIODE SCHOTTKY 100V 3A SMB
300330 Pcs New Original In Stock
Diode 100 V 3A Surface Mount SMB
Request Quote
(Ships tomorrow)
*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (251 Ratings)
SS310B
Product Overview
12997505
DiGi Electronics Part Number
SS310B-DGManufacturer
MDD
SS310B
Description
DIODE SCHOTTKY 100V 3A SMBInventory
300330 Pcs New Original In Stock
Diode 100 V 3A Surface Mount SMB
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
How to Order
Shipping & Delivery
Quality Assurance
365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
Limited Stock, Order Now - Get reliable parts without worry.
Global Shipping & Secure Packaging
Worldwide Delivery in 3-5 Business Days
100% ESD Anti-Static Packaging
Real-Time Tracking for Every Order
Secure & Flexible Payment
Credit Card, VISA, MasterCard, PayPal, Western Union, Telegraphic Transfer(T/T) and more
All payments encrypted for security
SS310B Technical Specifications
Category
Diodes, Rectifiers, Single Diodes
Packaging
Tape & Reel (TR)
Series
SMB
Product Status
Active
Technology
Schottky
Voltage - DC Reverse (Vr) (Max)
100 V
Current - Average Rectified (Io)
3A
Voltage - Forward (Vf) (Max) @ If
850 mV @ 3 A
Speed
Fast Recovery =< 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr
300 µA @ 100 V
Capacitance @ Vr, F
400pF @ 4V, 1MHz
Mounting Type
Surface Mount
Package / Case
DO-214AA, SMB
Supplier Device Package
SMB
Operating Temperature - Junction
-55°C ~ 150°C
Datasheet & Documents
Datasheets
Download SS310B Product Specification (PDF)
HTML Datasheet
SS310B-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
3372-SS310BTR
Standard Package
6,000
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
価格が手ごろで、スタッフの対応も丁寧です。購入後も安心して任せられます。
Dec 02, 2025
The items I purchased are top-quality, and the price was very reasonable.
Dec 02, 2025
DiGi Electronics offers great value for money, making tech accessible for everyone.
Dec 02, 2025
I feel assured knowing DiGi Electronics offers dependable and friendly services.
Dec 02, 2025
DiGi Electronics balances affordability and efficiency perfectly.
Dec 02, 2025
Any problems we've faced post-sale have been handled swiftly and professionally.
Dec 02, 2025
I can trust DiGi Electronics to ship my orders promptly, reducing supply chain hassles.
Dec 02, 2025
The company's attention to packaging safety minimizes damage risk and enhances customer satisfaction.
Publish Evalution
Evalution Message
Please enter your review message.
Please post honest comments and do not post ilegal comments.
Frequently Asked Questions (FAQ)
What are the key design risks when using the SS310B in a high-temperature power supply application near its maximum junction temperature?
When using the SS310B in high-temperature environments close to its 150°C maximum junction rating, the primary risk is thermal runaway due to increased reverse leakage current at elevated temperatures. Ensure adequate PCB copper pour for thermal dissipation, avoid placement near high-heat components, and derate the average rectified current (Io) above 75°C ambient. Monitoring junction temperature with thermal simulation or empirical measurement during prototype testing is recommended to maintain long-term reliability in continuous operation.
How does the SS310B compare to the SB3100 in terms of forward voltage and thermal performance for SMPS designs?
The SS310B offers a slightly lower forward voltage drop (850 mV @ 3A) compared to the SB3100 (~900 mV @ 3A), improving efficiency in low-voltage, high-current switch-mode power supplies. Both are SMB-packaged Schottky diodes rated at 100V, but the SS310B typically exhibits better thermal resistance due to MDD's wafer processing, resulting in cooler operation under equivalent loads. However, always verify thermal performance in your layout, as the SMB package has limited heat dissipation capability without proper PCB design.
Can the SS310B reliably replace the MBR340 in a 12V flyback converter, and what integration issues should I watch for?
Yes, the SS310B can replace the MBR340 in a 12V flyback converter as both are 100V, 3A Schottky diodes in SMB packages with similar electrical characteristics. However, note that the SS310B has a slightly higher reverse leakage (300 µA @ 100V) than the MBR340 (~250 µA), which may increase standby losses in no-load conditions. Ensure your layout minimizes parasitic inductance and uses adequate input/output capacitance to suppress voltage spikes during fast recovery transitions, especially at high switching frequencies.
What PCB layout practices should I follow to maximize thermal performance of the SS310B in surface-mount power rectification?
To optimize thermal performance of the SS310B, use at least two layers of copper with thermal vias under the cathode pad connected to internal ground or power planes. Maintain a minimum of 0.5 mm trace width for anode and cathode connections and avoid narrow routing that limits heat spreading. Place the SS310B away from other heat sources and consider adding local copper pour connected via multiple vias to improve convection cooling. The SMB package has limited heat dissipation, so thermal management is critical to sustain 3A operation without derating.
Is the SS310B susceptible to surge current damage during power-up in capacitive input filter circuits, and how can I mitigate this risk?
Yes, the SS310B can be at risk during power-up in circuits with large capacitive input filters due to high instantaneous inrush currents exceeding its peak forward surge rating (not specified in public datasheet). To mitigate this, add a small NTC thermistor or series resistive element during startup, or design soft-start functionality into the upstream controller. Alternatively, verify surge robustness through testing with worst-case line voltage and cold start conditions to ensure reliability over product lifetime.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
SS310B CAD Models
MDD SS310B PCB symbols & footprints
productDetail
