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Taiwan Semiconductor Corporation SF33G R0G
- Part No.:
- SF33G R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SF33G R0G.pdf
- Description:
- DIODE GEN PURP 150V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:9,199
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Product details
Overview
SF33G R0G from Taiwan Semiconductor is a 150 V, 3 A super fast recovery rectifier diode in DO-201AD package, featuring 35 ns reverse recovery time, 0.95 V forward voltage at 3 A and 25°C, and 125 A surge current capability; used in DC-DC converters and switching-mode inverters for high-efficiency power conversion.
For engineers reviewing the SF33G R0G datasheet, SF33G R0G pinout, SF33G R0G application, or SF33G R0G equivalent, key selection criteria include repetitive peak reverse voltage (150 V), forward voltage drop, thermal resistance (RθJL = 10 °C/W), and AEC-Q101 qualification status where applicable.
Technical Context
The SF33G R0G employs a single-die silicon PN junction structure optimized for super-fast recovery (trr ≤ 35 ns), enabling efficient operation in high-frequency switching topologies up to several hundred kHz. Its low Qrr and controlled soft-recovery behavior reduce EMI and switching losses in flyback and forward converters.
Thermally, it features a junction-to-lead resistance of 10 °C/W and junction-to-ambient resistance of 35 °C/W, supporting continuous 3 A conduction at TA ≤ 75°C without derating when mounted on standard PCB copper area. Polarity is indicated by a cathode band on the DO-201AD body.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - Maximum non-repetitive reverse voltage before breakdown; defines safe operating range in clamp/freewheeling circuits |
| IF | 3 A - Continuous average forward current rating at TA = 75°C; determines heatsink-free power handling capacity |
| IFSM | 125 A - Peak non-repetitive surge current (8.3 ms half-sine); supports inrush and fault-current robustness |
| VF | 0.95 V @ 3 A, 25°C - Forward voltage drop directly impacts conduction loss and thermal rise in high-duty-cycle operation |
| trr | 35 ns - Reverse recovery time; enables use in >100 kHz SMPS designs with minimal switching loss penalty |
| RθJL | 10 °C/W - Junction-to-lead thermal resistance; allows direct thermal coupling to PCB copper pour or heatsink tab |
| CJ | 80 pF @ 4 V - Junction capacitance affects high-frequency noise coupling and snubber design in resonant topologies |
Pinout & Package
Package: DO-201AD - Axial-leaded, molded plastic case with pure tin-plated leads compliant to J-STD-002; polarity marked by cathode band; weight ≈ 1.10 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter or transformer secondary center-tap) |
| Cathode (Lead 2) | Forward current exit / reverse blocking terminal | Connected to output rail or positive bus; cathode band identifies this lead physically |
Key Features
| Feature | Design Value |
|---|---|
| Super-fast recovery (trr ≤ 35 ns) | Enables high-frequency switching (>200 kHz) with low dynamic loss and reduced EMI generation |
| Low forward voltage (VF = 0.95 V @ 3 A) | Reduces conduction loss by ~15% vs. standard fast rectifiers, improving efficiency in 12–48 V output converters |
| High surge rating (IFSM = 125 A) | Withstands repeated cold-start surges and transient overloads without degradation in industrial power supplies |
| DO-201AD mechanical robustness | UL 94V-0 molding compound and JESD201 Class 2 whisker resistance ensure long-term reliability in vibration-prone environments |
| AEC-Q101 qualified option available | Supports automotive-grade deployment in engine control modules and ADAS power stages when ordered as SF33GH variant |
Applications
| DC-DC Converters | Switching Inverters |
|---|---|
Use Scenario: Secondary-side rectification in isolated 24 V/48 V telecom and server PSUs operating at 200–500 kHz. IC Role / Device Role / Timing Role: Freewheeling diode providing unidirectional current path during MOSFET off-time in synchronous or quasi-resonant topologies. Use Value: 35 ns trr minimizes reverse recovery charge (Qrr) and associated switching loss, improving full-load efficiency by 0.4–0.8% over standard fast diodes. | Use Scenario: Output stage rectification in 1–3 kW solar microinverters with interleaved boost + H-bridge architecture. IC Role / Device Role / Timing Role: High-reliability output rectifier handling bidirectional energy flow during reactive power cycling. Use Value: 125 A IFSM withstands grid-synchronization surges; 150 V VRRM provides 2× margin over 72 V DC-link peaks. |
| Freewheeling Diodes | Industrial Motor Drives |
Use Scenario: Inductive load protection in PLC output modules driving solenoids and relays with 24–48 V DC coils. IC Role / Device Role / Timing Role: Clamp diode suppressing inductive kickback spikes across switching transistors. Use Value: Low VF reduces clamp power dissipation; DO-201AD axial form factor enables direct through-hole mounting near coil terminals. | Use Scenario: Auxiliary power supply rectification in variable-frequency drives powering 3-phase AC induction motors. IC Role / Device Role / Timing Role: Input-stage rectifier converting 3-phase rectified AC to stable DC bus for gate driver ICs and MCU logic rails. Use Value: 150 V rating accommodates 120 VAC-derived DC bus (≈170 V peak) with safety margin; RoHS/halogen-free compliance meets industrial environmental 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 |
|---|---|---|---|
| STTH3L06S | VRRM = 600 V, VF = 1.15 V @ 3 A, trr = 30 ns, TO-220AC package | Higher voltage rating but larger footprint and higher VF; suited for universal-input offline SMPS | Select when >300 V reverse blocking is required and board space permits TO-220 mounting |
| ON Semi MUR3150 | VRRM = 150 V, VF = 0.92 V @ 3 A, trr = 35 ns, DO-201AD package, AEC-Q101 qualified | Identical voltage/current specs and package; tighter VF tolerance and certified automotive grade | Prefer for automotive applications requiring formal AEC-Q101 documentation and traceable lot data |
Compared with STTH3L06S and MUR3150, the SF33G R0G offers optimal balance of 150 V rating, low VF, and DO-201AD compatibility for cost-sensitive industrial DC-DC designs-without requiring layout changes or thermal redesign.
Availability
SF33G R0G is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and freewheeling applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for SF33G R0G 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 for industrial and computing markets.
The SF3xG series was developed specifically for high-frequency, high-reliability power conversion in telecom, server, and industrial motor control systems-emphasizing low-loss recovery and robust surge immunity in standard axial packages.
FAQ
What is the maximum junction temperature rating for SF33G R0G?
The SF33G R0G has a maximum junction temperature (TJ) of +150°C and a minimum storage temperature of –55°C. This rating allows reliable operation in enclosed industrial enclosures with ambient temperatures up to 75°C when mounted on ≥1 cm² of 2-oz copper, as supported by its RθJA = 35 °C/W specification. The SF33G R0G must be derated linearly above 75°C ambient per the forward current derating curve in the official TSC datasheet.
Is SF33G R0G AEC-Q101 qualified?
The base SF33G R0G part is not AEC-Q101 qualified; however, the SF33GH variant-identical in electrical and thermal specifications-is fully AEC-Q101 qualified and marked with "H" suffix. Customers requiring automotive-grade validation should order SF33GH, which undergoes stress testing per AEC-Q101 Rev D including HTGB, TCT, and UHAST. The SF33G R0G remains suitable for industrial and commercial applications.
What is the reverse recovery time (trr) test condition for SF33G R0G?
The SF33G R0G reverse recovery time is specified as ≤35 ns under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, measured using the test circuit shown in Figure 6 of the TSC SF3xG datasheet (Version H2105). This standardized condition ensures consistency with JEDEC JESD24-10 and enables valid comparison against other super fast rectifiers such as MUR3150 and STTH3L06S.
Does SF33G R0G have halogen-free construction?
Yes, the SF33G R0G uses halogen-free molding compound compliant with IEC 61249-2-21, confirmed in the "Features" section of the TSC SF3xG datasheet. This eliminates brominated flame retardants and meets stringent environmental requirements for industrial equipment sold in EU, Japan, and North America. The "G" in the marking code denotes green compound, and RoHS compliance is verified per EU Directive 2011/65/EU. The SF33G R0G is fully compatible with lead-free reflow profiles.
What is the typical junction capacitance of SF33G R0G and how is it measured?
The SF33G R0G exhibits a typical junction capacitance (CJ) of 80 pF, measured at 1 MHz with 4.0 V reverse bias and 50 mVp-p signal amplitude per the Electrical Specifications table. This value applies to SF31G–SF34G variants and directly influences high-frequency noise coupling and snubber sizing in resonant LLC or ZVS converters. CJ decreases with increasing reverse voltage and must be verified under actual operating bias in critical EMI-sensitive designs.
SF33G R0G 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):
- 150 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 150 V
- Capacitance @ Vr, F:
- 80pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
SF33G R0G FAQ
1.How can I place an order for SF33G R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SF33G R0G 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 SF33G R0G reliable?
The price and inventory of SF33G R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SF33G R0G is usually 5 days.
3.What payment methods are accepted for SF33G R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SF33G R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SF33G R0G?
SF33G R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SF33G R0G 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 SF33G R0G?
For technical support, including SF33G R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SF33G R0G requirements.
6.How does Aetrix verify that SF33G R0G is sourced from the original manufacturer or authorized distributors?
All SF33G R0G 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 SF33G R0G meets industry standards.
7.What is the process for return or replacement of SF33G R0G?
All SF33G R0G units undergo pre-shipment inspection (PSI). If there is an issue with SF33G R0G, 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 SF33G R0G part is unused and in its original packaging.
Return procedure for SF33G R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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