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Taiwan Semiconductor Corporation SR306 B0G
- Part No.:
- SR306 B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR306 B0G.pdf
- Description:
- DIODE SCHOTTKY 60V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:5,916
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Product details
Overview
SR306 B0G from Taiwan Semiconductor is a 3A, 60V Schottky barrier rectifier in DO-201AD package, featuring low forward voltage (0.70 V at 3 A, 25°C), 80 A surge capability, and AEC-Q101 qualification option. It delivers high efficiency in DC/DC converters and industrial power adapters.
For engineers reviewing the SR306 B0G datasheet, SR306 B0G pinout, SR306 B0G application, or SR306 B0G equivalent, key selection factors include its 60 V repetitive peak reverse voltage, 5 mA reverse leakage at 100°C, 125°C max junction temperature, and DO-201AD mechanical compatibility with standard through-hole reflow and wave soldering processes.
Technical Context
This Schottky rectifier uses a single-die construction with guard ring for overvoltage protection and exhibits fast recovery due to majority-carrier conduction. Its 10,000 V/µs critical dv/dt rating supports stable operation in high-frequency switching topologies.
Thermal performance is defined by 15°C/W junction-to-case and 50°C/W junction-to-ambient resistance. The device operates across –55°C to +125°C junction range, with 1.10 g mass and pure tin-plated leads compliant with J-STD-002 solderability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 60 V - Maximum repetitive reverse blocking voltage; sets upper limit for DC bus or output rail voltage in SMPS designs |
| IF | 3 A - Continuous average forward current; defines steady-state power handling under thermal design constraints |
| IFSM | 80 A - Non-repetitive surge rating (8.3 ms half-sine); enables robustness against inrush and fault transients |
| VF | 0.70 V @ 3 A, 25°C - Low conduction loss directly reduces heat generation and improves system efficiency |
| IR | 500 µA @ 60 V, 25°C - Reverse leakage impacts standby power and high-impedance sensing accuracy |
| TJ max | 125°C - Maximum operating junction temperature; determines heatsinking requirements and derating curves |
| RθJC | 15°C/W - Enables accurate junction temperature estimation from case temperature measurements |
Pinout & Package
Package: DO-201AD - Axial-leaded, molded plastic case with cathode band marking; UL 94V-0 rated compound; 1.10 g typical weight; compatible with JEDEC MS-013 standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to lower-potential side (e.g., switch node or ground return) in buck or flyback secondary |
| Cathode (Lead 2) | Forward current exit / reverse blocking terminal | Marked with band; ties to output rail or positive bus; reverse voltage applied here during off-state |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enhances ruggedness against transient overvoltage without external snubbers in 60 V-class applications |
| AEC-Q101 qualified version available | Validated for automotive under-hood environments including temperature cycling and mechanical shock |
| Low VF (0.70 V) | Reduces conduction loss by ~15–20% vs. comparable 60 V Si diodes, lowering thermal stress in compact adapters |
| RoHS & halogen-free | Meets IEC 61249-2-21; supports compliance in consumer, industrial, and automotive end equipment |
| High IFSM/IF ratio (26.7×) | Provides margin for startup surges and short-circuit events without bond wire fusing |
Applications
| AC-DC Adapter Secondary Rectification | USB PD Fast-Charging DC/DC Output Stage |
|---|---|
Use Scenario: 60 W laptop adapter converting 12 V input to 20 V output using synchronous rectification-assisted topology. IC Role / Device Role / Timing Role: Primary unidirectional power transfer element on secondary side; replaces conventional Si diode to reduce losses. Use Value: 0.70 V VF cuts conduction loss by >0.5 W vs. Si alternative, enabling smaller heatsink and higher power density. | Use Scenario: 45 W USB PD 3.0 charger with multi-tap transformer and dual-output regulation. IC Role / Device Role / Timing Role: Freewheeling rectifier in active-clamp forward converter; handles 3 A continuous and 80 A surge during load steps. Use Value: 80 A IFSM withstands repeated 10 A load transients without degradation, extending field reliability. |
| Industrial PLC Power Supply Input Protection | Automotive Body Control Module (BCM) DC/DC Converter |
Use Scenario: 24 V input rail conditioning in programmable logic controller with wide ambient temperature range. IC Role / Device Role / Timing Role: Reverse polarity and backfeed protection diode upstream of LDO regulators and microcontrollers. Use Value: 125°C TJ max and 500 µA IR at 25°C ensure stable operation during extended 70°C ambient runtime. | Use Scenario: 12 V to 5 V/3.3 V step-down converter powering CAN transceivers and sensors in BCM. IC Role / Device Role / Timing Role: Output rectifier in isolated flyback; exposed to automotive load dump and cold crank conditions. Use Value: Guard ring and AEC-Q101 qualification enable reliable operation under ISO 7637-2 pulse 5a (load dump) stress. |
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-3EJH06-M3/5BT | Same DO-201AD package, 3 A/60 V rating, but 0.72 V VF (max) and no AEC-Q101 option | Lacks automotive qualification; suitable for commercial-grade adapters only | Select when AEC-Q101 is not required and tighter VF tolerance is unnecessary |
| ON Semiconductor SB360-E3/54 | DO-201AD, 3 A/60 V, 0.72 V VF (max), RoHS-compliant, but 100°C TJ max and 1000 µA IR at 25°C | Lower thermal and leakage specs limit use in high-ambient or low-standby-power designs | Prefer for cost-sensitive consumer power supplies where 125°C operation is not needed |
Compared with VS-3EJH06-M3/5BT and SB360-E3/54, SR306 B0G offers superior thermal capability (125°C vs. ≤100°C), lower leakage (500 µA vs. ≥1000 µA), and optional AEC-Q101 qualification-making it the preferred choice for industrial and automotive power conversion where reliability and temperature margin are critical.
Availability
SR306 B0G is available at Aetrix Electronics and suitable for AC-DC adapters, USB PD fast-charging systems, and industrial PLC power supplies requiring stable component supply and long-term manufacturability.
Supply support for SR306 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, serving global power, automotive, and industrial markets since 1979.
The SR302–SR320 series was designed specifically for high-efficiency, medium-voltage Schottky rectification in space-constrained power supplies-emphasizing low VF, rugged surge handling, and automotive-grade reliability options.
FAQ
What is the maximum junction temperature rating for SR306 B0G?
The SR306 B0G has a maximum junction temperature (TJ) of +125°C. This rating applies under continuous operation with proper thermal management and is validated per the device's absolute maximum ratings table. Exceeding this temperature may cause irreversible degradation. Derating curves in the SR306 B0G datasheet define allowable current reduction above 25°C ambient.
Does SR306 B0G have AEC-Q101 qualification?
The SR306 B0G itself is not AEC-Q101 qualified; however, the SR306H variant (same electrical specs, marked "H") is fully AEC-Q101 qualified. The "B0G" suffix indicates green compound and ammo box packaging-not automotive qualification. Engineers requiring automotive compliance must specify SR306H or SR306HA0G.
What is the forward voltage of SR306 B0G at 3 A and 100°C junction temperature?
The SR306 B0G forward voltage increases with temperature: while VF is 0.70 V (max) at 25°C and 3 A, it rises to approximately 0.58–0.62 V at 100°C under the same current. This negative temperature coefficient is characteristic of Schottky diodes and improves thermal stability in parallel configurations.
Is SR306 B0G compatible with lead-free reflow soldering processes?
Yes, SR306 B0G features pure tin-plated leads that meet J-STD-002 solderability requirements and are rated for lead-free reflow profiles up to 260°C peak temperature. The DO-201AD package's UL 94V-0 molding compound ensures stability during standard IPC/JEDEC J-STD-020-compliant thermal cycling.
What does the "B0G" suffix mean in SR306 B0G?
In Taiwan Semiconductor's ordering nomenclature, "B0G" denotes green (halogen-free) molding compound and 500-piece ammo box packaging. It does not indicate voltage grade (that is "306"), qualification level (no "H"), or tape-and-reel format ("A0G" = ammo, "no suffix" or "H" = tape & reel). The full part number SR306 B0G identifies a 60 V, 3 A, green, ammo-packaged Schottky rectifier.
SR306 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):
- 60 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 60 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
SR306 B0G FAQ
1.How can I place an order for SR306 B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR306 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 SR306 B0G reliable?
The price and inventory of SR306 B0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR306 B0G is usually 5 days.
3.What payment methods are accepted for SR306 B0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR306 B0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR306 B0G?
SR306 B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR306 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 SR306 B0G?
For technical support, including SR306 B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR306 B0G requirements.
6.How does Aetrix verify that SR306 B0G is sourced from the original manufacturer or authorized distributors?
All SR306 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 SR306 B0G meets industry standards.
7.What is the process for return or replacement of SR306 B0G?
All SR306 B0G units undergo pre-shipment inspection (PSI). If there is an issue with SR306 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 SR306 B0G part is unused and in its original packaging.
Return procedure for SR306 B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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