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Taiwan Semiconductor Corporation SF37GHR0G
- Part No.:
- SF37GHR0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SF37GHR0G.pdf
- Description:
- DIODE GEN PURP 500V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:5,552
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Product details
Overview
SF37GHR0G from Taiwan Semiconductor is a 500V, 3A super fast recovery rectifier diode in DO-201AD package, featuring 35ns reverse recovery time, 1.70V forward voltage at 3A/25°C, and 125A surge capability-used in high-efficiency DC-DC converters and freewheeling paths in automotive power supplies.
For engineers reviewing the SF37GHR0G datasheet, SF37GHR0G pinout, SF37GHR0G application, or SF37GHR0G equivalent, key selection criteria include VRRM = 500V, trr = 35ns, VF = 1.70V @ 3A, TJ(max) = 150°C, and AEC-Q101 qualification status for automotive-grade reliability validation.
Technical Context
This device is a single-die, planar junction silicon rectifier optimized for switching-mode power supplies requiring fast turn-off and low conduction loss. Its 35ns reverse recovery time enables operation at frequencies up to several hundred kHz without excessive switching loss.
The SF37GHR0G exhibits 60pF junction capacitance at 4V reverse bias and 10°C/W junction-to-lead thermal resistance-critical for thermal management in compact, high-power-density designs where lead-frame conduction dominates heat dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 500 V - blocks up to 500V repetitive reverse voltage, suitable for 400V DC bus applications with safety margin |
| IF | 3 A - continuous average forward current rating at TA = 75°C with adequate heatsinking |
| trr | 35 ns - enables efficient high-frequency switching in SMPS with minimal reverse recovery loss |
| VF | 1.70 V @ 3A, 25°C - defines conduction loss (5.1W max at rated current), directly impacting thermal design |
| RθJL | 10 °C/W - quantifies thermal path from junction to lead; used to calculate junction temperature rise under load |
| IFSM | 125 A - peak non-repetitive surge current handling for startup or fault conditions |
| CJ | 60 pF @ 1MHz, VR = 4V - affects high-frequency noise coupling and snubber design in flyback topologies |
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 | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter); polarity must match PCB silkscreen |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to higher-potential rail (e.g., output capacitor positive); determines freewheeling path direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements (HTOL, TC, UHAST) |
| Super fast recovery (trr = 35 ns) | Reduces switching losses vs. standard rectifiers, enabling >200 kHz operation in isolated DC-DC converters |
| Low VF (1.70 V @ 3A) | Lowers conduction loss by ~15% compared to similar 500V rectifiers with VF > 1.95V, improving efficiency at full load |
| DO-201AD mechanical robustness | UL 94V-0 molding compound and 1.10g mass support vibration resistance and thermal cycling reliability in engine bay environments |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally regulated end equipment |
Applications
| Automotive DC-DC Converters | Industrial SMPS Freewheeling |
|---|---|
Use Scenario: 12V-to-48V bidirectional converter in 48V mild-hybrid vehicle architecture. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck-boost stage, conducting during low-side switch off-time. Use Value: 35ns trr minimizes reverse recovery charge (Qrr), reducing voltage spikes and EMI during transition-critical for ASIL-B functional safety compliance. | Use Scenario: Output rectification in 3kW telecom rectifier with 300kHz switching frequency. IC Role / Device Role / Timing Role: Main output rectifier handling 3A continuous current in continuous conduction mode (CCM). Use Value: 1.70V VF at 3A lowers conduction loss versus generic 500V rectifiers, improving full-load efficiency by 0.8–1.2%. |
| LED Driver Flyback Secondary | UPS Inverter Output Stage |
Use Scenario: Secondary-side rectification in isolated 60W constant-current LED driver for street lighting. IC Role / Device Role / Timing Role: High-voltage output rectifier operating at 65kHz with 500V reverse stress during MOSFET turn-on. Use Value: 500V VRRM provides 20% margin over 400V reflected output voltage, ensuring long-term reliability under line transients. | Use Scenario: Anti-parallel freewheeling path in 5kVA online UPS inverter leg using SiC MOSFETs. IC Role / Device Role / Timing Role: Clamping diode conducting during dead-time intervals to prevent shoot-through and manage reactive energy. Use Value: 125A IFSM withstands inverter short-circuit currents without bond-wire fusing, supporting IGBT/SiC gate drive timing margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L06S | VRRM = 600V, trr = 30ns, VF = 1.75V @ 3A, DO-201AD, not AEC-Q101 qualified | Higher voltage margin but no automotive qualification; slightly slower recovery than SF37GHR0G | Preferred where 600V blocking is mandatory and AEC-Q101 is not required |
| ON Semi MUR305 | VRRM = 500V, trr = 50ns, VF = 1.75V @ 3A, DO-201AD, AEC-Q101 qualified | Slower recovery increases switching loss in >150kHz designs; identical voltage/current ratings | Acceptable where trr < 40ns is not critical and second-source validation is needed |
Compared with STTH3L06S and MUR305, the SF37GHR0G uniquely combines 500V rating, 35ns trr, and AEC-Q101 qualification-making it optimal for automotive 48V systems requiring both speed and qualification, whereas alternatives trade off one of these attributes.
Availability
SF37GHR0G is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS freewheeling circuits, and LED driver flyback secondary rectification requiring stable component supply across multi-year production cycles.
Supply support for SF37GHR0G 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 SF3xG series was designed specifically for high-reliability, high-frequency power conversion in automotive and industrial applications-emphasizing fast recovery, low VF, and AEC-Q101 compliance in standard DO-201AD packaging.
FAQ
What is the maximum junction temperature rating for SF37GHR0G?
The SF37GHR0G has a maximum junction temperature (TJ(max)) of +150°C, verified per absolute maximum ratings table. This allows operation in under-hood automotive environments when mounted on PCBs with ≥10 cm² copper pour and proper airflow. Derating curves confirm 3A average current is sustainable up to 75°C ambient with standard DO-201AD mounting.
Is SF37GHR0G pin-compatible with other SF3xG series devices?
Yes, all SF3xG devices-including SF37GHR0G-share identical DO-201AD package dimensions, lead spacing, and axial anode/cathode pinout. The "HR0G" suffix denotes AEC-Q101 qualification and green compound; electrical differences (VRRM, VF, trr) are internal to the die and do not affect physical compatibility.
Does SF37GHR0G require a heatsink in typical 3A applications?
No external heatsink is required for SF37GHR0G at 3A continuous current if PCB copper area ≥25 mm² per lead is provided and ambient temperature remains ≤50°C. Thermal data shows RθJA = 35°C/W; with 5.1W conduction loss (1.70V × 3A), junction rise is ~179°C above ambient-so derating to 2.2A at 75°C ambient maintains TJ ≤ 150°C without added heatsinking.
What does the "H" in SF37GHR0G signify?
The "H" in SF37GHR0G indicates AEC-Q101 qualification per the ordering code table in the datasheet. It confirms the device underwent stress testing including high-temperature operating life (HTOL), temperature cycling (TC), and unbiased highly accelerated stress test (UHAST)-required for automotive power electronics in non-safety-critical but reliability-sensitive functions.
How does SF37GHR0G's reverse recovery time compare to standard fast rectifiers?
SF37GHR0G's trr = 35ns is 40–60% faster than standard fast rectifiers like 1N5622 (trr ≈ 85ns) or BYV26E (trr ≈ 75ns). This reduction cuts reverse recovery charge (Qrr) by half, lowering EMI generation and voltage overshoot in hard-switched topologies-particularly beneficial in 200–500kHz DC-DC converters where switching loss dominates efficiency.
SF37GHR0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 500 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 500 V
- Capacitance @ Vr, F:
- 60pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
SF37GHR0G FAQ
1.How can I place an order for SF37GHR0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SF37GHR0G 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 SF37GHR0G reliable?
The price and inventory of SF37GHR0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF37GHR0G is usually 5 days.
3.What payment methods are accepted for SF37GHR0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF37GHR0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF37GHR0G?
SF37GHR0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF37GHR0G 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 SF37GHR0G?
For technical support, including SF37GHR0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF37GHR0G requirements.
6.How does Aetrix verify that SF37GHR0G is sourced from the original manufacturer or authorized distributors?
All SF37GHR0G 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 SF37GHR0G meets industry standards.
7.What is the process for return or replacement of SF37GHR0G?
All SF37GHR0G units undergo pre-shipment inspection (PSI). If there is an issue with SF37GHR0G, 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 SF37GHR0G part is unused and in its original packaging.
Return procedure for SF37GHR0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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