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Taiwan Semiconductor Corporation SF2L4GH
- Part No.:
- SF2L4GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SF2L4GH.pdf
- Description:
- DIODE GEN PURP 200V 2A DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,488
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Product details
Overview
SF2L4GH from Taiwan Semiconductor is a 2 A, 200 V super fast recovery rectifier diode in DO-204AC (DO-15) package, featuring 35 ns reverse recovery time, 0.95 V max forward voltage at 2 A and 25°C, glass passivated junction, and AEC-Q101 qualification for automotive-grade reliability. It serves as a freewheeling or output rectifier in high-frequency switching power supplies.
For engineers reviewing the SF2L4GH datasheet, SF2L4GH pinout, SF2L4GH application, or SF2L4GH equivalent, key selection criteria include its 200 V repetitive peak reverse voltage, 50 A surge rating, 150°C maximum junction temperature, AEC-Q101 qualification status, and DO-15 mechanical compatibility with legacy through-hole layouts.
Technical Context
This super fast rectifier uses a single-die silicon PN junction with glass passivation to achieve low forward voltage and rapid carrier recombination. Its 35 ns trr enables efficient operation in 100–500 kHz DC-DC converters and SMPS topologies where reverse recovery loss must be minimized.
The device's thermal design supports 17°C/W junction-to-lead resistance and 65°C/W junction-to-ambient resistance under standard mounting conditions. Its 1 µA max reverse leakage at 25°C and 100 µA at 125°C ensures stable blocking performance across automotive temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse voltage; defines safe DC/peak AC blocking capability in flyback or boost outputs |
| IF | 2 A - Continuous average forward current; sets steady-state conduction limit at TA = 75°C with adequate heatsinking |
| IFSM | 50 A - Non-repetitive surge rating (8.3 ms half-sine); withstands inrush and fault currents in power-up sequences |
| trr | 35 ns - Reverse recovery time; enables high-frequency switching with reduced switching loss and EMI generation |
| VF | 0.95 V max @ 2 A, 25°C - Low forward drop improves system efficiency and reduces thermal load on PCB copper |
| TJ max | 150°C - Maximum junction temperature; supports operation in under-hood automotive environments |
| RθJL | 17°C/W - Junction-to-lead thermal resistance; informs heatsink or pad design for lead-mounted thermal relief |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, glass-passivated silicon rectifier with cathode band marking. Leads are pure tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter or transformer secondary center-tap) |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connected to output rail or filter capacitor; polarity marking prevents incorrect installation in high-reliability assemblies |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics requiring stress-tested reliability |
| Glass passivated junction | Enhances moisture resistance and long-term stability of reverse leakage and breakdown characteristics |
| Low VF (0.95 V max) | Reduces conduction loss by ~15% vs. standard fast rectifiers at 2 A, lowering thermal design margin requirements |
| High IFSM (50 A) | Supports robust startup behavior in industrial SMPS without derating or external fusing |
| RoHS & halogen-free | Complies with IEC 61249-2-21; suitable for consumer, medical, and automotive supply chains with strict material declarations |
Applications
| Automotive DC-DC Converters | Industrial Switch-Mode Power Supplies |
|---|---|
Use Scenario: 12 V to 5 V/3.3 V step-down conversion in ADAS camera modules and infotainment head units. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology. Use Value: AEC-Q101 qualification and 150°C TJ max ensure uninterrupted operation during extended engine-off hot-soak conditions. | Use Scenario: Secondary-side rectification in 24 V input industrial PLC power rails. IC Role / Device Role / Timing Role: Freewheeling diode across relay coils and solenoid drivers. Use Value: 35 ns trr minimizes voltage spikes and snubber losses, reducing EMI filter component count. |
| Consumer Laptop Adapters | Telecom Rectifier Modules |
Use Scenario: High-density 19 V output stage in compact 65 W USB-C PD adapters. IC Role / Device Role / Timing Role: Primary-side clamp or secondary-side synchronous rectifier companion. Use Value: 0.95 V VF and DO-15 footprint enable thermally efficient layout without forced air cooling. | Use Scenario: -48 V DC distribution board output rectification in base station power shelves. IC Role / Device Role / Timing Role: OR-ing diode in redundant 48 V feed paths. Use Value: 50 A IFSM handles transient bus faults while maintaining isolation integrity during hot-swap events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R02U (STMicroelectronics) | Same 2 A / 200 V rating; 30 ns trr; TO-220AC package (not DO-15) | Requires PCB redesign due to different outline and lead spacing; higher thermal mass | Select when higher surge capability (60 A) and surface-mount compatibility are prioritized over through-hole fit |
| ON Semi MUR220 (now onsemi) | 2 A / 200 V; 35 ns trr; DO-15 package; no AEC-Q101 qualification | Not qualified for automotive use; lower cost for commercial-grade designs | Select for cost-sensitive consumer or industrial applications where AEC-Q101 is not mandated |
Compared with STTH2R02U and MUR220, SF2L4GH uniquely combines AEC-Q101 qualification, DO-15 form factor, and 50 A surge rating-making it the only drop-in replacement for automotive through-hole rectifier upgrades requiring zero layout change and certified reliability.
Availability
SF2L4GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial switching mode power supplies, and telecom rectifier modules requiring stable component supply and long-term lifecycle support.
Supply support for SF2L4GH 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 automotive, industrial, and consumer markets since 1979.
The SF2L4GH belongs to TSC's AEC-Q101-qualified super fast rectifier family, engineered specifically for high-efficiency, high-reliability power conversion in harsh-environment automotive and industrial systems.
FAQ
What is the peak repetitive reverse voltage rating for SF2L4GH?
The SF2L4GH has a repetitive peak reverse voltage (VRRM) rating of 200 V. This value is specified in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version B2105). It defines the maximum allowable reverse-biased voltage the device can block continuously without breakdown, making SF2L4GH suitable for 200 V-class DC-DC and SMPS output stages.
Is SF2L4GH qualified to AEC-Q101 standards?
Yes, SF2L4GH is explicitly AEC-Q101 qualified, as confirmed by the "H" suffix in the ordering code and stated in the FEATURES section of the Taiwan Semiconductor datasheet. This qualification covers stress tests including HTGB, HTRB, TC, and UHAST, validating SF2L4GH for use in automotive powertrain and chassis applications where reliability under thermal and mechanical stress is critical.
What is the forward voltage drop of SF2L4GH at rated current?
The SF2L4GH exhibits a maximum forward voltage (VF) of 0.95 V at 2 A forward current and 25°C junction temperature, per the Electrical Specifications table. This low VF contributes directly to reduced conduction losses and improved thermal performance in high-duty-cycle applications such as laptop adapters and industrial SMPS where efficiency is tightly constrained.
Does SF2L4GH have a defined reverse recovery time?
Yes, SF2L4GH has a maximum reverse recovery time (trr) of 35 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions. This parameter is documented in the Electrical Specifications section and confirms SF2L4GH's classification as a super fast rectifier-critical for minimizing switching losses in 100–500 kHz power converters.
What package type does SF2L4GH use, and how is polarity indicated?
SF2L4GH uses the DO-204AC (DO-15) axial-leaded package. Polarity is indicated by a visible cathode band on the banded end of the device body, consistent with industry-standard diode marking conventions. The leads are pure tin-plated and compliant with J-STD-002 for reliable solder wetting during wave or hand soldering processes.
SF2L4GH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AC, DO-15, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 200 V
- Capacitance @ Vr, F:
- 40pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SF2L4GH FAQ
1.How can I place an order for SF2L4GH through Aetrix?
Please submit a Request for Quotation (RFQ) for SF2L4GH 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 SF2L4GH reliable?
The price and inventory of SF2L4GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF2L4GH is usually 5 days.
3.What payment methods are accepted for SF2L4GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF2L4GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF2L4GH?
SF2L4GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF2L4GH 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 SF2L4GH?
For technical support, including SF2L4GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF2L4GH requirements.
6.How does Aetrix verify that SF2L4GH is sourced from the original manufacturer or authorized distributors?
All SF2L4GH 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 SF2L4GH meets industry standards.
7.What is the process for return or replacement of SF2L4GH?
All SF2L4GH units undergo pre-shipment inspection (PSI). If there is an issue with SF2L4GH, 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 SF2L4GH part is unused and in its original packaging.
Return procedure for SF2L4GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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