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Taiwan Semiconductor Corporation SF36G B0G
- Part No.:
- SF36G B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SF36G B0G.pdf
- Description:
- DIODE GEN PURP 400V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:7,604
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Product details
Overview
SF36G from Taiwan Semiconductor is a 400V, 3A super fast recovery rectifier diode in DO-201AD package, featuring 35ns reverse recovery time, 1.30V forward voltage at 3A/25°C, and 125A surge capability - used in high-frequency switching mode power supplies and freewheeling paths.
For engineers reviewing the SF36G datasheet, SF36G pinout, SF36G application, or SF36G equivalent, key selection criteria include VRRM = 400V, IF = 3A, trr = 35ns, thermal resistance RθJL = 10°C/W, and AEC-Q101 qualification availability (SF36GH variant).
Technical Context
This single-die, unidirectional silicon rectifier operates with low conduction loss and fast switching behavior due to its optimized PN junction design. Its 35ns reverse recovery time enables efficient operation in DC-DC converters and SMPS operating above 50kHz.
The device supports continuous forward current up to 3A at TL ≤ 95°C and withstands repetitive 400V reverse voltage. Thermal performance is defined by RθJL = 10°C/W and RθJC = 9°C/W, enabling direct lead-to-heatsink thermal path design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum repetitive reverse blocking voltage; defines safe operating range in flyback/freewheeling clamp circuits |
| IF | 3 A - average forward current rating at TL = 95°C; determines continuous power handling in 12–48V output stages |
| trr | 35 ns - reverse recovery time at IF = 0.5A, IR = 1.0A, Irr = 0.25A; enables <100kHz switching without excessive switching loss |
| VF | 1.30 V @ 3A, 25°C - forward voltage drop; directly impacts conduction loss (Pcond ≈ 3.9W at full load) |
| IFSM | 125 A - non-repetitive surge current (8.3ms half-sine); supports inrush and fault-current tolerance in industrial SMPS |
| RθJL | 10 °C/W - junction-to-lead thermal resistance; allows estimation of junction temperature rise using measured lead temperature |
Pinout & Package
DO-201AD axial-leaded package with cathode band marking; leads are pure tin plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck freewheel path) |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output rail or positive bus; polarity must be observed to prevent catastrophic failure |
Key Features
| Feature | Design Value |
|---|---|
| Super fast recovery (trr = 35ns) | Reduces switching losses and EMI generation in 50–100kHz SMPS topologies |
| Low VF = 1.30V @ 3A | Minimizes conduction loss vs. standard fast rectifiers (typically >1.5V), improving efficiency in 12–24V outputs |
| High IFSM = 125A | Withstands transient overcurrent events without bond-wire fusing, enhancing system robustness |
| AEC-Q101 qualified option (SF36GH) | Validated for automotive under-hood applications requiring extended temperature and reliability compliance |
Applications
| DC-DC Converter | Switching Inverter |
|---|---|
Use Scenario: Secondary-side rectification in isolated 48V-to-12V synchronous or quasi-resonant DC-DC converters. IC Role / Device Role / Timing Role: Unidirectional current steering and energy transfer during freewheeling phase; replaces slower diodes to reduce switching loss. Use Value: 35ns trr and 1.30V VF cut total rectifier loss by ~18% versus standard fast diodes at 75kHz operation. | Use Scenario: Freewheeling path in motor drive inverters for HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: Clamping inductive kickback during IGBT turn-off; handles repetitive 400V reverse stress and 3A RMS current. Use Value: 125A IFSM and 150°C TJMAX ensure reliable operation during motor stall or short-circuit transients. |
| Freewheeling Diode | SMPS Output Stage |
Use Scenario: Inductor current recirculation path in buck and boost regulators powering telecom baseband boards. IC Role / Device Role / Timing Role: Provides low-loss return path when main switch is off; critical for maintaining regulation and minimizing voltage overshoot. Use Value: Low RθJL = 10°C/W enables direct PCB copper pour heatsinking, sustaining 3A continuous without forced air. | Use Scenario: Output rectification in 24V/3A AC-DC adapters for industrial IoT gateways. IC Role / Device Role / Timing Role: Converts high-frequency transformer secondary AC to regulated DC; operates at 65kHz with minimal reverse recovery tail. Use Value: 60pF junction capacitance (at 4V) reduces capacitive coupling noise into feedback networks and improves EMI margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L04 | VRRM = 400V, IF = 3A, trr = 30ns, VF = 1.25V @ 3A - slightly faster and lower VF, but DO-201AD footprint identical | Same mounting and layout; preferred where <5ns trr reduction improves light-load efficiency | Select STTH3L04 if optimizing for lowest possible switching loss in high-frequency designs; verify thermal derating matches RθJA = 45°C/W |
| ON Semi MUR340 | VRRM = 400V, IF = 3A, trr = 50ns, VF = 1.3V @ 3A - slower recovery, same VF, same DO-201AD package | Acceptable where EMI constraints are relaxed or cost sensitivity outweighs trr benefit | Choose MUR340 only when trr > 45ns is acceptable; avoid in >60kHz designs due to higher switching loss |
Compared with STTH3L04 and MUR340, the SF36G delivers balanced performance: 35ns trr provides measurable EMI and loss advantage over MUR340, while remaining cost-competitive against STTH3L04 without requiring layout change.
Availability
SF36G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and freewheeling applications requiring stable component supply, long-term industrial lifecycle support, and RoHS/halogen-free compliance.
Supply support for SF36G 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 industrial, computing, and automotive markets since 1979.
The SF3xG series targets high-efficiency power conversion systems demanding fast recovery, low VF, and rugged surge capability - especially in space-constrained, thermally demanding SMPS and motor control designs.
FAQ
What is the maximum junction temperature rating for SF36G?
The SF36G has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table. This allows operation in high-ambient environments such as enclosed industrial power supplies or under-hood automotive modules when properly heatsinked. The SF36G datasheet specifies derating curves starting at TL = 95°C for continuous IF = 3A operation.
Is SF36G RoHS and halogen-free compliant?
Yes, SF36G is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound meets UL 94V-0 flammability rating, and terminals are pure tin plated. These compliance attributes are confirmed in the official Taiwan Semiconductor SF31G–SF38G datasheet Version H2105, page 1.
Does SF36G have AEC-Q101 qualification?
The base SF36G is not AEC-Q101 qualified; however, the SF36GH variant (ordering code with "H" suffix) is AEC-Q101 qualified. Both share identical electrical and thermal specifications, but SF36GH undergoes additional stress testing for automotive under-hood applications per AEC-Q101 Rev D.
What is the reverse recovery time test condition for SF36G?
The SF36G reverse recovery time (trr) is measured at IF = 0.5A, IR = 1.0A, and Irr = 0.25A, per the Electrical Specifications table on page 2 of the SF31G–SF38G datasheet. This standardized condition ensures consistent comparison across super fast rectifier families.
Can SF36G replace SF34G in an existing design?
Yes, SF36G can replace SF34G mechanically and electrically, as both use DO-201AD package and share identical IF = 3A, IFSM = 125A, and thermal specs. However, SF36G has higher VRRM = 400V (vs. 200V for SF34G), offering increased reverse voltage margin - beneficial in designs with voltage spikes or uncertain input transients.
SF36G 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:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 400 V
- Capacitance @ Vr, F:
- 60pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
SF36G B0G FAQ
1.How can I place an order for SF36G B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SF36G 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 SF36G B0G reliable?
The price and inventory of SF36G B0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF36G B0G is usually 5 days.
3.What payment methods are accepted for SF36G B0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF36G B0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF36G B0G?
SF36G B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF36G 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 SF36G B0G?
For technical support, including SF36G B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF36G B0G requirements.
6.How does Aetrix verify that SF36G B0G is sourced from the original manufacturer or authorized distributors?
All SF36G 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 SF36G B0G meets industry standards.
7.What is the process for return or replacement of SF36G B0G?
All SF36G B0G units undergo pre-shipment inspection (PSI). If there is an issue with SF36G 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 SF36G B0G part is unused and in its original packaging.
Return procedure for SF36G B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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