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SS310BF
EVVO Semi
DIODE SCHOTTKY 100V 3A SMBF
160410 Pcs New Original In Stock
Diode 100 V 3A Surface Mount SMBF
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5.0 / 5.0
- (491 Ratings)
SS310BF
Product Overview
13237263
DiGi Electronics Part Number
SS310BF-DGManufacturer
EVVO Semi
SS310BF
Description
DIODE SCHOTTKY 100V 3A SMBFInventory
160410 Pcs New Original In Stock
Diode 100 V 3A Surface Mount SMBF
Quantity
Minimum 1
Minimum 1
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SS310BF Technical Specifications
Category
Diodes, Rectifiers, Single Diodes
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
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-221AA, SMB Flat Leads
Supplier Device Package
SMBF
Operating Temperature - Junction
-55°C ~ 125°C
Datasheet & Documents
Datasheets
Download SS310BF Product Specification (PDF)
HTML Datasheet
SS310BF-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
ECCN
EAR99
HTSUS
8541.10.0080
Additional Information
Other Names
5272-SS310BFCT
5272-SS310BFDKR
5272-SS310BFTR
Standard Package
5,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
DiGi Electronics는 빠른 배송과 품질 좋은 제품으로 유명합니다. 매우 만족합니다.
Dec 02, 2025
DiGi의 고객 서비스 덕분에 만족스러운 쇼핑 경험을 했어요.
Dec 02, 2025
Envoi très rapide, j'ai reçu ma commande en un rien de temps.
Dec 02, 2025
Delivery was lightning-fast, and I appreciated receiving my order promptly.
Dec 02, 2025
Their professional approach makes even complex inquiries seem simple and manageable.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the SS310BF in a high-temperature power supply application near its maximum junction temperature?
When designing the SS310BF into a high-temperature environment close to its 125°C junction limit, the primary risk is thermal runaway due to increased reverse leakage current. As temperature rises, the reverse leakage (300 µA @ 100 V) can increase exponentially, further elevating junction temperature. To mitigate this, ensure adequate PCB copper pour for thermal dissipation, avoid placing the SS310BF near other heat-generating components, and verify worst-case thermal performance under full load and high ambient conditions. Consider derating the average rectified current (3A) by at least 20–30% above 85°C ambient to maintain reliability.
How does the forward voltage (Vf) of the SS310BF compare to similar Schottky diodes like the SB3100 and SB310-E3, and what impact does it have on power efficiency in a 3A switching power supply?
The SS310BF has a maximum forward voltage of 850 mV at 3 A, which is competitive with the SB3100 (900 mV @ 3A) and slightly better than the SB310-E3 (1.0V @ 3A). This lower Vf translates to reduced conduction losses—saving approximately 0.45W at full current compared to the SB310-E3—improving power efficiency in high-current, low-voltage applications such as 12V-to-5V buck converters. However, always confirm Vf across temperature and production lot variations, as Schottky diodes can exhibit batch-dependent performance affecting thermal balance in parallel configurations.
Can the SS310BF be used as a drop-in replacement for the MBR310 in a reverse polarity protection circuit, and are there any hidden integration issues?
While the SS310BF and MBR310 share similar ratings (100V, 3A, SMBF package), the SS310BF has a higher reverse leakage current (300 µA vs. typically 200 µA for MBR310), which could become critical in battery-powered systems where standby current matters. In reverse polarity protection, this leakage flows through the circuit when the supply is disconnected, potentially causing unintended behavior or drain. If substituting, perform leakage current testing at maximum operating temperature and ensure downstream circuit impedance is high enough to prevent issues. A series MOSFET-based protector may be preferable for ultra-low leakage.
What are the reliability concerns when operating the SS310BF at or near its 100V DC blocking voltage in a surge-prone industrial environment?
Operating the SS310BF near its 100V Vr(max) in surge-prone environments risks breakdown during voltage transients, as real-world line surges can exceed steady-state levels. Unlike rectifiers with higher voltage margins, the SS310BF has no overhead above 100V, increasing vulnerability to ESD or inductive spikes. Always de-rate by at least 20% (use below 80V DC continuous) in industrial settings and pair with transient protection such as a TVS diode. Also, verify voltage derating over lifetime and temperature, as junction degradation accelerates near maximum ratings.
How does the 400pF junction capacitance of the SS310BF affect its performance in high-frequency SMPS designs compared to faster rectifiers like the SS34?
The SS310BF’s 400pF capacitance at 4V can increase switching losses in high-frequency SMPS (>200 kHz) compared to lower-capacitance diodes like the SS34 (~110pF). While speed is listed as 'Fast Recovery', Schottky diodes like the SS310BF still exhibit soft reverse recovery and displacement current due to capacitance, which interacts with transformer leakage inductance causing ringing and EMI. In high-frequency designs, simulate or prototype with the SS310BF to assess efficiency trade-offs; consider interleaving or snubbers to dampen ringing, or switch to lower-C alternatives if efficiency drops significantly at full load.
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.
SS310BF CAD Models
EVVO Semi SS310BF PCB symbols & footprints
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