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Taiwan Semiconductor Corporation SF17GHR1G
- Part No.:
- SF17GHR1G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
SF17GHR1G.pdf
- Description:
- DIODE GEN PURP 500V 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,967
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Product details
Overview
SF17GHR1G from Taiwan Semiconductor is a 500 V, 1 A super fast recovery rectifier diode in DO-204AL (DO-41) package, featuring 1.70 V forward voltage at 1 A and 35 ns reverse recovery time, used for freewheeling and switching-mode power supply output rectification.
For engineers reviewing the SF17GHR1G datasheet, SF17GHR1G pinout, SF17GHR1G application, or SF17GHR1G equivalent, key selection criteria include peak repetitive reverse voltage (500 V), surge current rating (30 A), junction-to-lead thermal resistance (20 °C/W), AEC-Q101 qualification status, and low leakage (5 µA @ 25°C).
Technical Context
This device is a single-die, planar passivated silicon rectifier optimized for high-frequency switching applications. Its 35 ns trr and 10 pF junction capacitance enable efficient operation in DC-DC converters up to several hundred kHz.
The SF17GHR1G operates with a maximum junction temperature of 150°C and exhibits stable reverse leakage-5 µA at 25°C and 100 µA at 125°C-supporting reliable performance in automotive under-hood environments where thermal stress is significant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 500 V - supports input/output isolation in 400 V DC bus systems with 25% safety margin |
| IF | 1 A continuous - suitable for low-to-medium power SMPS secondary-side rectification |
| IFSM | 30 A (8.3 ms) - withstands inrush and transient overloads without failure |
| VF @ 1 A | 1.70 V - contributes ~1.7 W conduction loss at full load, requiring thermal management |
| trr | 35 ns - minimizes switching losses and EMI in high-frequency converters (>100 kHz) |
| RθJL | 20 °C/W - enables direct PCB copper pour heatsinking for compact layout |
| IR @ 25°C | 5 µA - ensures low standby power loss in energy-sensitive applications |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, cathode indicated by band. Lead finish: pure tin, J-STD-002 solderable. Weight: 0.350 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode | Current exit point during forward conduction; polarity marker via band | Connected to output rail or filter capacitor positive terminal; defines unidirectional current path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and whisker resistance |
| Super fast recovery (35 ns) | Reduces turn-off switching loss and associated RFI in high-frequency topologies |
| Low VF (1.70 V @ 1 A) | Improves system efficiency vs. standard recovery diodes (VF > 2.0 V) at rated current |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing |
| Junction-to-lead thermal resistance (20 °C/W) | Enables effective heat transfer to PCB copper without external heatsink in ≤1 W dissipation designs |
Applications
| DC–DC Converter Output Rectification | Automotive Switch-Mode Power Supply |
|---|---|
Use Scenario: Secondary-side rectification in isolated flyback or forward converters powering infotainment or ADAS ECUs. IC Role / Device Role / Timing Role: Unidirectional current steering and voltage clamping during switch off-time. Use Value: 35 ns trr reduces switching loss and improves efficiency by ~2–3% over standard rectifiers at 250 kHz operation. | Use Scenario: 12 V input to 3.3/5 V step-down conversion in engine control modules exposed to -40°C to +125°C ambient. IC Role / Device Role / Timing Role: Freewheeling path for inductive energy return during MOSFET off-state. Use Value: AEC-Q101 qualification and 150°C TJ max ensure functional safety compliance per ISO 26262 ASIL-B subsystem requirements. |
| Freewheeling Diode in Relay Drivers | Industrial AC–DC Adapter Output Stage |
Use Scenario: Suppressing inductive kickback from 24 V DC solenoid valves or contactor coils in PLC I/O modules. IC Role / Device Role / Timing Role: Clamping transient voltage spikes to protect driving transistors. Use Value: 500 V VRRM provides 2× margin over 24 V system transients (ISO 7637-2 Pulse 1/2b), preventing avalanche failure. | Use Scenario: Output rectification in universal-input (90–264 VAC) offline adapters for industrial HMIs and sensors. IC Role / Device Role / Timing Role: High-voltage, low-loss conduction path after bridge rectifier and bulk capacitor. Use Value: 1.70 V VF and 5 µA IR at 25°C minimize no-load and full-load losses, supporting Energy Star Tier 2 efficiency targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06 | Same VRRM (600 V), slightly higher VF (1.75 V @ 1 A), trr = 30 ns, TO-220AC package | Higher thermal mass but requires mounting hardware; not axial-leaded | Select when board-level heatsinking is impractical and higher surge robustness is needed |
| ON Semi MUR105 | 50 V lower VRRM (450 V), identical DO-41 package, VF = 1.7 V, trr = 35 ns, non-AEC-Q101 | Lacks automotive qualification; suitable only for commercial/industrial use | Choose for cost-sensitive non-automotive designs where 450 V margin suffices |
Compared with STTH1R06 and MUR105, the SF17GHR1G uniquely combines AEC-Q101 qualification, DO-41 form factor, and 500 V rating-making it the only drop-in solution for space-constrained automotive power rails requiring validated reliability.
Availability
SF17GHR1G is available at Aetrix Electronics and suitable for DC–DC converter output rectification, automotive switch-mode power supplies, freewheeling diode applications, and industrial AC–DC adapter output stages requiring stable component supply and long-term lifecycle support.
Supply support for SF17GHR1G 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 rectifiers, TVS diodes, MOSFETs, and bipolar transistors since 1979.
The SF17GHR1G belongs to TSC's SFxG super fast rectifier family, engineered specifically for high-efficiency, high-reliability power conversion in automotive and industrial environments where fast recovery, low loss, and qualification-grade robustness are mandatory.
FAQ
What is the peak repetitive reverse voltage rating of SF17GHR1G?
The SF17GHR1G has a peak repetitive reverse voltage (VRRM) rating of 500 V. This value is specified in the Absolute Maximum Ratings table and confirmed across all electrical test conditions in the datasheet. It defines the maximum reverse-biased voltage the device can block repeatedly without breakdown. Designers should maintain at least 20% derating margin-e.g., limit applied VR to ≤400 V-for long-term reliability in harsh environments.
Is SF17GHR1G qualified to AEC-Q101 standards?
Yes, SF17GHR1G is AEC-Q101 qualified. The "H" suffix in the part number denotes qualification, and the datasheet explicitly lists AEC-Q101 qualification under FEATURES. Test reports cover HTGB, HTRB, temperature cycling, and whisker resistance per JESD201 Class 2. This makes SF17GHR1G suitable for automotive powertrain and chassis applications where component reliability is critical.
What is the forward voltage drop of SF17GHR1G at 1 A and 25°C?
The forward voltage drop (VF) of SF17GHR1G is 1.70 V at IF = 1 A and TJ = 25°C, as stated in the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) to avoid self-heating. At elevated junction temperatures (e.g., 125°C), VF decreases slightly (~1.55 V), which must be considered in thermal design and loss calculations.
Does SF17GHR1G have a defined reverse recovery time?
Yes, SF17GHR1G has a maximum reverse recovery time (trr) of 35 ns, tested at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This parameter is critical for minimizing switching losses in high-frequency converters. The datasheet confirms this value applies to SF17G and SF18G variants, and it is verified across production lots per TSC's quality protocol.
What package type does SF17GHR1G use, and what are its mechanical features?
SF17GHR1G uses the DO-204AL (DO-41) axial package. Key mechanical features include pure tin-plated leads compliant with J-STD-002, UL 94V-0 molding compound, cathode polarity indicated by a band, and a typical weight of 0.350 g. The package outline dimensions and marking diagram are provided in the datasheet's Package Outline Dimensions section (Version H2104, Page 5).
SF17GHR1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 500 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 500 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SF17GHR1G FAQ
1.How can I place an order for SF17GHR1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SF17GHR1G 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 SF17GHR1G reliable?
The price and inventory of SF17GHR1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF17GHR1G is usually 5 days.
3.What payment methods are accepted for SF17GHR1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF17GHR1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF17GHR1G?
SF17GHR1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF17GHR1G 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 SF17GHR1G?
For technical support, including SF17GHR1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF17GHR1G requirements.
6.How does Aetrix verify that SF17GHR1G is sourced from the original manufacturer or authorized distributors?
All SF17GHR1G 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 SF17GHR1G meets industry standards.
7.What is the process for return or replacement of SF17GHR1G?
All SF17GHR1G units undergo pre-shipment inspection (PSI). If there is an issue with SF17GHR1G, 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 SF17GHR1G part is unused and in its original packaging.
Return procedure for SF17GHR1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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