My Inquiry
My Account
Taiwan Semiconductor Corporation SF66GH
- Part No.:
- SF66GH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SF66GH.pdf
- Description:
- DIODE GEN PURP 400V 6A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:2,240
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SF66GH from Taiwan Semiconductor is a 400V, 6A super fast recovery rectifier diode in DO-201AD package, featuring 1.300V forward voltage at 6A/25°C, 35ns reverse recovery time, and AEC-Q101 qualification for automotive-grade reliability. It serves as a primary output rectifier in high-frequency DC-DC converters requiring low conduction loss and fast switching.
For engineers reviewing the SF66GH datasheet, SF66GH pinout, SF66GH application, or SF66GH equivalent, key selection criteria include its 400V VRRM, 150A IFSM, junction-to-lead thermal resistance of 5°C/W, and AEC-Q101 qualification status - all critical for automotive power supply and industrial SMPS designs.
Technical Context
The SF66GH employs a single-die silicon planar structure optimized for super-fast recovery (trr ≤ 35 ns), enabling efficient operation in 100–500 kHz switching topologies. Its low Qrr and reduced tail current minimize switching losses in synchronous and quasi-resonant converters.
Thermally, it delivers 5°C/W junction-to-lead resistance and supports continuous operation up to +150°C junction temperature. The DO-201AD package with pure tin-plated leads meets J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 400V-rated power rails |
| IF | 6 A - Continuous forward current rating; supports 6A DC output in compact SMPS designs |
| IFSM | 150 A - Non-repetitive surge current capability; withstands inrush and fault transients without failure |
| VF | 1.300 V @ 6A, 25°C - Low conduction loss enables >92% efficiency in 12V–48V output stages |
| trr | 35 ns - Fast reverse recovery minimizes switching loss and EMI in high-frequency converters |
| RθJL | 5 °C/W - Efficient heat transfer to PCB copper; allows 6A operation with minimal heatsinking |
| Junction Temp | −55°C to +150°C - Enables deployment in under-hood automotive environments and industrial enclosures |
Pinout & Package
DO-201AD axial-leaded package with cathode band marking; lead-free, RoHS-compliant, halogen-free molding compound (IEC 61249-2-21), UL 94V-0 rated, 1.20g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to output rail and filter capacitor positive terminal |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power modules per stress test requirements (HTOL, TC, HAST, etc.) |
| Super fast recovery (trr ≤ 35 ns) | Reduces turn-off loss and dv/dt-induced ringing in 200+ kHz flyback and LLC converters |
| Low VF = 1.300 V @ 6A | Lowers conduction loss by ~15% vs. standard fast rectifiers, improving thermal margin at full load |
| Junction-to-lead RθJL = 5°C/W | Enables direct thermal coupling to copper pour; eliminates need for external heatsink in 15W–30W designs |
| 150A IFSM rating | Survives 8.3ms half-sine surges during cold-start or short-circuit events without parametric shift |
Applications
| Automotive DC-DC Converters | Industrial SMPS Output Rectification |
|---|---|
Use Scenario: 12V-to-5V/3.3V buck-derived converter in ADAS camera module power supply. IC Role / Device Role / Timing Role: Primary output rectifier handling 4–6A continuous current at 250 kHz switching frequency. Use Value: AEC-Q101 qualification ensures reliability over 15-year vehicle lifetime; 35ns trr suppresses EMI near image sensor analog front-end. | Use Scenario: 48V input, 24V/6A output isolated forward converter in factory automation PLC power stage. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode managing energy return during MOSFET off-time. Use Value: 150A IFSM withstands motor startup surges; 5°C/W RθJL maintains <110°C junction temp without forced air. |
| Telecom Power Brick Rectification | Renewable Energy Inverter Auxiliary Supply |
Use Scenario: 54V input, 12V/5A output power brick for 5G base station remote radio units. IC Role / Device Role / Timing Role: Output rectifier in active-clamp forward topology operating at 300 kHz. Use Value: 1.300V VF reduces conduction loss by 0.78W vs. legacy 1.45V diodes, lowering thermal design complexity. | Use Scenario: Auxiliary 24V supply in solar string inverter control board, powered from HV DC bus via flyback. IC Role / Device Role / Timing Role: High-voltage output rectifier blocking 400V reverse potential during flyback reset. Use Value: 400V VRRM provides 2× safety margin over 200V reflected flyback voltage; RoHS/halogen-free compliance meets IEC 61215. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-6EWH04-M3/45 | 400V VRRM, 6A IF, 1.35V VF, 30ns trr, DO-201AD, AEC-Q101 qualified | Marginally faster trr but higher VF; identical thermal performance | Preferred where ultra-low reverse recovery charge is prioritized over conduction loss |
| ON Semiconductor MUR640EG | 400V VRRM, 6A IF, 1.25V VF, 50ns trr, DO-201AD, not AEC-Q101 qualified | Lower VF but slower recovery; no automotive qualification | Suitable for cost-sensitive industrial supplies where AEC-Q101 is not required |
Compared with VS-6EWH04-M3/45 and MUR640EG, the SF66GH uniquely balances 1.300V VF, 35ns trr, and full AEC-Q101 compliance in DO-201AD - making it optimal for automotive and high-reliability industrial converters where both efficiency and qualification are mandatory.
Availability
SF66GH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS output rectification, and telecom power brick designs requiring stable component supply and long-term lifecycle support.
Supply support for SF66GH 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, and MOSFETs.
The SF66GH belongs to TSC's SF6xG 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 rigor are essential.
FAQ
What is the peak repetitive reverse voltage rating for SF66GH?
The SF66GH has a peak repetitive reverse voltage (VRRM) rating of 400 V. This value is confirmed in the Absolute Maximum Ratings table on page 2 of the official Taiwan Semiconductor SF61G–SF68G datasheet (Version G2105). It defines the maximum reverse-biased voltage the device can block continuously without breakdown, making SF66GH suitable for 400V-class power rails in automotive and industrial systems.
Is SF66GH qualified to AEC-Q101 standards?
Yes, SF66GH is AEC-Q101 qualified. The "H" suffix in the ordering code explicitly denotes AEC-Q101 qualification, as stated in the Ordering Information section (page 3) of the Taiwan Semiconductor SF61G–SF68G datasheet. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - confirming suitability for automotive under-hood applications.
What is the forward voltage drop of SF66GH at rated current?
The forward voltage (VF) of SF66GH is 1.300 V at 6 A forward current and 25°C junction temperature, per the Electrical Specifications table (page 2). This value is measured under pulse conditions (PW = 0.3 ms) and reflects low conduction loss critical for high-efficiency power conversion stages using SF66GH as the output rectifier.
What package type does SF66GH use, and what are its key mechanical properties?
SF66GH uses the DO-201AD axial-leaded package. Key mechanical properties include pure tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 flammability-rated molding compound, JESD201 Class 2 whisker resistance, cathode band polarity marking, and a typical weight of 1.20 g - all documented in the Mechanical Data section of the SF61G–SF68G datasheet.
How does the reverse recovery time of SF66GH impact switching performance?
SF66GH has a reverse recovery time (trr) of 35 ns, specified under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions. This fast recovery reduces switching loss and high-frequency ringing in topologies like forward, flyback, and LLC converters operating above 100 kHz - directly improving efficiency and easing EMI filter design when using SF66GH in high-frequency power supplies.
SF66GH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 6A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 6 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 400 V
- Capacitance @ Vr, F:
- 50pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
SF66GH FAQ
1.How can I place an order for SF66GH through Aetrix?
Please submit a Request for Quotation (RFQ) for SF66GH 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 SF66GH reliable?
The price and inventory of SF66GH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF66GH is usually 5 days.
3.What payment methods are accepted for SF66GH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF66GH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF66GH?
SF66GH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF66GH 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 SF66GH?
For technical support, including SF66GH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF66GH requirements.
6.How does Aetrix verify that SF66GH is sourced from the original manufacturer or authorized distributors?
All SF66GH 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 SF66GH meets industry standards.
7.What is the process for return or replacement of SF66GH?
All SF66GH units undergo pre-shipment inspection (PSI). If there is an issue with SF66GH, 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 SF66GH part is unused and in its original packaging.
Return procedure for SF66GH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SF66GH Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
