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Taiwan Semiconductor Corporation SF15GH
- Part No.:
- SF15GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
SF15GH.pdf
- Description:
- DIODE GEN PURP 300V 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:4,995
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Product details
Overview
SF15GH from Taiwan Semiconductor is a 1 A, 400 V repetitive peak reverse voltage (VRRM) super fast recovery rectifier diode in DO-204AL (DO-41) package, featuring 35 ns reverse recovery time (trr), 1.30 V forward voltage at 1 A and 25°C, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SF15GH datasheet, SF15GH pinout, SF15GH application, or SF15GH equivalent, this device serves as a high-efficiency freewheeling and output rectification solution in compact DC-DC converters, switching inverters, and automotive power supplies where low conduction loss and fast switching are critical.
Technical Context
The SF15GH employs a single-die silicon PN junction structure optimized for super fast recovery with controlled minority carrier lifetime. Its trr of 35 ns and low Qrr enable reduced switching losses in high-frequency SMPS topologies.
Thermally, it delivers RθJL = 20°C/W and RθJA = 80°C/W, supporting 1 A continuous forward current up to 150°C junction temperature. The pure tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum non-repetitive reverse blocking voltage; defines usable input/output voltage range in DC-DC and inverter designs |
| IF | 1 A - Continuous average forward current rating at TA = 75°C; determines thermal sizing for PCB copper and heatsinking |
| trr | 35 ns - Measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables operation up to ~500 kHz without excessive switching loss |
| VF | 1.30 V max @ 1 A, 25°C - Directly impacts conduction loss (Pcond ≈ IF × VF) and thermal rise in high-duty-cycle applications |
| CJ | 10 pF @ 1 MHz, VR = 4 V - Low junction capacitance minimizes capacitive coupling noise and improves EMI performance in high-speed switching |
| IFSM | 30 A @ 8.3 ms half-sine - Supports robust surge handling during startup or fault conditions without bond wire fusing |
Pinout & Package
DO-204AL (DO-41) axial-leaded package with cathode indicated by a painted band on the body. Leads are pure tin-plated, compliant with J-STD-002 solderability and JESD201 Class 2 whisker test. Weight: 0.350 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter, transformer secondary center-tap) |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; connected to output rail or positive bus; must withstand full VRRM when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications per stress test requirements including temperature cycling, HTRB, and UHAST |
| Super fast recovery (trr ≤ 35 ns) | Reduces reverse recovery charge (Qrr) and associated turn-off losses in hard-switched topologies |
| Low VF (1.30 V max) | Lowers steady-state conduction loss vs. standard fast recovery diodes, improving efficiency in 12–48 V output converters |
| RoHS + halogen-free | Complies with IEC 61249-2-21; supports environmentally regulated industrial and automotive supply chains |
Applications
| Automotive DC-DC Converters | Industrial Switch-Mode Power Supplies |
|---|---|
Use Scenario: 12 V to 5 V/3.3 V step-down conversion in engine control units (ECUs) and ADAS modules. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology. Use Value: AEC-Q101 qualification ensures reliability across -40°C to +125°C ambient; 35 ns trr maintains efficiency at 300–500 kHz switching frequencies. | Use Scenario: Secondary-side rectification in 24 V/48 V telecom and factory automation PSUs. IC Role / Device Role / Timing Role: Freewheeling diode in active clamp forward or LLC resonant converters. Use Value: 400 V VRRM supports wide input ranges; 1.30 V VF reduces thermal load on PCB without heatsink. |
| Renewable Energy Inverters | Consumer AC-DC Adapters |
Use Scenario: Auxiliary power supply rectification in solar microinverters and battery storage systems. IC Role / Device Role / Timing Role: Input bridge or snubber clamp diode in isolated gate driver supplies. Use Value: 30 A IFSM withstands PV array surge transients; DO-41 package allows manual rework and automated placement. | Use Scenario: Output rectification in compact 5–20 W USB PD adapters. IC Role / Device Role / Timing Role: High-frequency rectifier in QR flyback secondary winding. Use Value: 10 pF CJ minimizes EMI generation; RoHS/halogen-free compliance meets global consumer safety standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R04 | VRRM = 400 V, trr = 30 ns, VF = 1.35 V @ 1 A - slightly faster but higher VF; no AEC-Q101 qualification | Preferred in industrial SMPS where ultra-low trr outweighs automotive qualification needs | Select when prioritizing minimal Qrr over automotive compliance; requires validation for underhood use |
| ON Semi MUR140 | VRRM = 400 V, trr = 50 ns, VF = 1.25 V @ 1 A - slower recovery but lower VF; not AEC-Q101 qualified | Suitable for cost-sensitive consumer adapters where 500 kHz+ operation is not required | Choose for legacy designs needing proven field reliability at lower frequency; verify thermal margin at 1 A continuous |
Compared with STTH1R04 and MUR140, the SF15GH uniquely combines AEC-Q101 qualification, 35 ns trr, and 1.30 V VF in DO-41 - making it the only drop-in option for automotive-grade 400 V rectification where both reliability and high-frequency efficiency are mandatory.
Availability
SF15GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial switching power supplies, and renewable energy inverters requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101-compliant sourcing.
Supply support for SF15GH 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 automotive, industrial, and consumer markets since 1979.
The SF15GH 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 essential.
FAQ
What is the maximum junction temperature rating for SF15GH?
The SF15GH has a maximum junction temperature (TJ) rating of +150°C, validated across its full operating range from -55°C to +150°C. This rating enables reliable operation in underhood automotive environments and thermally constrained industrial enclosures. Derating curves in the SF15GH datasheet specify allowable IF versus ambient temperature, with 1 A continuous permitted up to 75°C ambient when mounted on standard FR-4 PCB with 1-inch² copper pad.
Is SF15GH pin-compatible with other SFxG series devices?
Yes, all SF11G–SF18G devices, including SF15GH, share identical DO-204AL (DO-41) package dimensions, lead spacing, and axial anode/cathode terminal configuration. This allows direct mechanical substitution across the family for voltage scaling - e.g., replacing SF15GH with SF16GH (400 V → 500 V VRRM) requires no PCB layout change, though electrical validation of VF and trr is recommended.
Does SF15GH require derating when used in high-humidity environments?
No specific humidity-based derating is required for SF15GH, as its molding compound meets UL 94V-0 flammability rating and its terminals pass JESD201 Class 2 whisker testing - confirming long-term stability under humid, high-temperature bias conditions. However, conformal coating is advised for automotive underhood applications exposed to condensation or salt mist, per ISO 16750-4 environmental test requirements.
What is the reverse leakage current specification for SF15GH at elevated temperature?
The SF15GH specifies maximum reverse current (IR) of 100 µA at rated VR and TJ = 125°C, measured under 30 ms pulse conditions. At 25°C, IR is limited to 5 µA. This low leakage supports stable hold-up time in capacitor-input filter stages and minimizes standby power loss in always-on automotive modules powered by SF15GH rectifiers.
Can SF15GH be used in synchronous rectification topologies?
No, SF15GH is a unidirectional silicon PN junction rectifier and cannot function as a synchronous rectifier, which requires actively controlled MOSFETs with gate drive circuitry. It is designed exclusively for passive rectification and freewheeling roles. For synchronous designs, discrete MOSFETs such as TSC's TSM230N03 or equivalent logic-level N-ch devices should be paired with appropriate gate drivers - SF15GH remains suitable as a bootstrap or auxiliary supply rectifier within those same systems.
SF15GH 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):
- 300 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 300 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
SF15GH FAQ
1.How can I place an order for SF15GH through Aetrix?
Please submit a Request for Quotation (RFQ) for SF15GH 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 SF15GH reliable?
The price and inventory of SF15GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF15GH is usually 5 days.
3.What payment methods are accepted for SF15GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF15GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF15GH?
SF15GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF15GH 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 SF15GH?
For technical support, including SF15GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF15GH requirements.
6.How does Aetrix verify that SF15GH is sourced from the original manufacturer or authorized distributors?
All SF15GH 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 SF15GH meets industry standards.
7.What is the process for return or replacement of SF15GH?
All SF15GH units undergo pre-shipment inspection (PSI). If there is an issue with SF15GH, 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 SF15GH part is unused and in its original packaging.
Return procedure for SF15GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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