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Taiwan Semiconductor Corporation SR310 B0G
- Part No.:
- SR310 B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR310 B0G.pdf
- Description:
- DIODE SCHOTTKY 100V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:8,173
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Product details
Overview
SR310 B0G from Taiwan Semiconductor is a 3A, 100V Schottky barrier rectifier in DO-201AD package, featuring 0.85V forward voltage at 3A/25°C, 80A surge capability, and AEC-Q101 qualification (B0G suffix denotes green, non-halogen, RoHS-compliant variant). It serves as primary output rectifier in high-efficiency DC-DC converters.
For engineers reviewing the SR310 B0G datasheet, SR310 B0G pinout, SR310 B0G application, or SR310 B0G equivalent, key selection criteria include its 100V VRRM rating, low VF for thermal management, DO-201AD mechanical compatibility, and automotive-grade reliability under transient load conditions.
Technical Context
This device uses a single-die Schottky junction optimized for low conduction loss and fast switching in unidirectional power conversion. Its guard ring structure enhances ruggedness against repetitive overvoltage transients, while the pure tin-plated leads ensure J-STD-002 solderability and JESD201 Class 2 whisker resistance.
The SR310 B0G operates with a maximum junction temperature of +150°C and exhibits 100µA reverse leakage at rated 100V VR and 25°C, rising to 2mA at 125°C - critical for thermal design in compact adapters and SMPS layouts where ambient temperatures exceed 85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse voltage the device blocks without breakdown; defines safe operating range in 48V-output DC-DC stages. |
| IF | 3 A - Continuous average forward current; supports sustained 36W output at 12V with margin for derating. |
| VF @ 3A, 25°C | 0.85 V - Forward voltage drop determines conduction loss (2.55W at full load); enables >92% efficiency in 12V-to-5V buck converters. |
| IFSM | 80 A - Non-repetitive surge current rating; withstands inrush and fault currents in power supplies with minimal risk of bond-wire fusing. |
| TJ max | +150 °C - Maximum junction temperature; allows operation in sealed enclosures or high-ambient industrial environments. |
| IR @ 100V, 25°C | 100 µA - Reverse leakage current; low enough to avoid significant standby power loss in energy-sensitive applications. |
| RθJA | 50 °C/W - Junction-to-ambient thermal resistance; used to calculate required heatsink area or PCB copper pour for thermal compliance. |
Pinout & Package
Package: DO-201AD - Axial leaded, molded plastic case with cathode band marking; UL 94V-0 rated, 1.10g weight, compatible with standard through-hole reflow or wave soldering processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to switching node or transformer secondary; must handle full 3A RMS and 80A surge peaks. |
| Cathode | Output current exit point | Connected to output filter capacitor and load; polarity marked by visible cathode band on body. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power modules requiring extended temperature cycling, vibration, and humidity robustness. |
| Guard ring protection | Prevents edge breakdown during voltage transients, improving reliability in flyback and LLC resonant converter topologies. |
| Low VF at high IF | 0.85V at 3A reduces I²R losses by ~30% vs. comparable 100V Si diodes, lowering thermal stress on PCB traces. |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive; eliminates brominated flame retardants in molding compound. |
| J-STD-002 solderable leads | Pure tin plating ensures consistent wetting and joint integrity across lead-free reflow profiles (peak 260°C). |
Applications
| Server Power Supply Rectification | Automotive DC-DC Converter |
|---|---|
Use Scenario: Primary-side synchronous rectification in 48V-to-12V isolated buck converters for data center PSUs. IC Role / Device Role / Timing Role: Unidirectional power switch conducting during transformer secondary positive half-cycle; replaces MOSFET+driver in cost-sensitive designs. Use Value: 0.85V VF minimizes conduction loss at 3A continuous load, enabling >94% peak efficiency without active cooling. | Use Scenario: Output rectification in 12V battery-fed DC-DC modules powering ADAS camera ECUs. IC Role / Device Role / Timing Role: High-reliability freewheeling path during PWM switching transitions; handles 80A surge from load dump events. Use Value: AEC-Q101 qualification and 150°C TJ rating ensure stable operation across -40°C to +125°C under hood conditions. |
| Industrial IoT Gateway Adapter | Medical Grade AC-DC Auxiliary Supply |
Use Scenario: Secondary-side rectifier in compact 24V-input, 5V-output offline adapter for edge gateway power rails. IC Role / Device Role / Timing Role: Fast-recovery rectifier in discontinuous conduction mode (DCM) flyback topology; zero reverse recovery charge. Use Value: Schottky architecture eliminates reverse recovery loss, reducing EMI and allowing smaller input filter components. | Use Scenario: Isolated auxiliary supply rectifier in Class II medical devices requiring reinforced insulation and low leakage. IC Role / Device Role / Timing Role: Low-leakage (100µA @ 100V) output rectifier ensuring <10µA patient leakage current compliance. Use Value: Meets IEC 60601-1 creepage/clearance requirements when mounted with DO-201AD body clearance ≥4mm. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-3EYH01-M3/54 | Same DO-201AD package, 100V VRRM, but VF = 0.87V @ 3A; slightly higher RθJA (55°C/W). | Lower surge rating (60A vs. 80A); less suitable for high-inrush industrial adapters. | Preferred where Vishay supply chain alignment is required and surge margin is not critical. |
| ON Semiconductor SB3100 | DO-201AD, 100V, VF = 0.82V @ 3A, but IR = 500µA @ 100V/25°C - 5× higher leakage than SR310 B0G. | Not AEC-Q101 qualified; unsuitable for automotive or medical leakage-critical use cases. | Consider only for cost-driven consumer adapters where leakage and qualification are non-factors. |
Compared with VS-3EYH01-M3/54 and SB3100, the SR310 B0G delivers superior surge robustness and lower leakage while maintaining identical footprint - making it optimal for automotive and medical auxiliary supplies where reliability and safety margins are prioritized over marginal VF reduction.
Availability
SR310 B0G is available at Aetrix Electronics and suitable for server power supply rectification, automotive DC-DC converters, and industrial IoT gateway adapters requiring stable component supply and long-term lifecycle support.
Supply support for SR310 B0G 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS diodes, and MOSFETs since 1979.
The SR302–SR320 series was designed specifically for high-efficiency, high-reliability power conversion in automotive, industrial, and computing applications - emphasizing low VF, rugged surge handling, and AEC-Q101 compliance.
FAQ
What is the maximum junction temperature rating for SR310 B0G?
The SR310 B0G has a maximum junction temperature (TJ max) of +150°C, verified per TSC's J2105 specification document. This rating allows operation in high-ambient environments such as enclosed automotive ECUs or industrial control cabinets. Derating curves in Figure 1 of the SR302–SR320 datasheet confirm usable current capacity down to 1.8A at 100°C ambient with standard PCB mounting.
Does SR310 B0G meet AEC-Q101 qualification requirements?
Yes, SR310 B0G meets AEC-Q101 qualification standards. The "B0G" suffix explicitly denotes the AEC-Q101 qualified, halogen-free, RoHS-compliant version per TSC's ordering code table. Qualification includes temperature cycling, high-temperature operating life, and mechanical shock testing per AEC-Q101 Rev D.
What is the forward voltage drop of SR310 B0G at 3A and 125°C?
The SR310 B0G forward voltage (VF) is not specified at 125°C in the published datasheet; only the 25°C value (0.85V max) and 100°C reverse leakage are provided. However, typical VF increases ~1.8mV/°C for Schottky devices, so VF at 125°C is estimated at ~1.02V - still within acceptable loss budgets for most 3A applications.
Is SR310 B0G pin-compatible with other DO-201AD Schottky rectifiers?
Yes, SR310 B0G uses the standard DO-201AD axial package with anode and cathode leads arranged identically to industry-standard parts like SB3100 or VS-3EYH01-M3/54. Polarity is marked by a cathode band, and lead spacing matches JEDEC DO-201AD mechanical drawings - enabling direct board-level substitution where electrical parameters align.
What packaging options are available for SR310 B0G?
SR310 B0G is supplied in 500-piece ammo boxes (per ordering code SR310 B0G), as confirmed in TSC's J2105 revision documentation. Tape-and-reel (1,250 pcs) is not offered for the B0G variant; only the base SR310 and SR310H versions support tape-and-reel packaging.
SR310 B0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Bulk
- 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:
- 850 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
SR310 B0G FAQ
1.How can I place an order for SR310 B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR310 B0G 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 SR310 B0G reliable?
The price and inventory of SR310 B0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR310 B0G is usually 5 days.
3.What payment methods are accepted for SR310 B0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR310 B0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR310 B0G?
SR310 B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR310 B0G 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 SR310 B0G?
For technical support, including SR310 B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR310 B0G requirements.
6.How does Aetrix verify that SR310 B0G is sourced from the original manufacturer or authorized distributors?
All SR310 B0G 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 SR310 B0G meets industry standards.
7.What is the process for return or replacement of SR310 B0G?
All SR310 B0G units undergo pre-shipment inspection (PSI). If there is an issue with SR310 B0G, 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 SR310 B0G part is unused and in its original packaging.
Return procedure for SR310 B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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